Earth:Paludiculture

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Short description: Wet agriculture and forestry on peatlands

Paludiculture is wet agriculture and forestry on peatlands.[1] Paludiculture combines the reduction of greenhouse gas emissions from drained peatlands through rewetting with continued land use and biomass production under wet conditions.[2] “Paludi” comes from the Latin “palu's” meaning “swamp, morass” and "paludiculture" as a concept was developed at Greifswald University.[3] Paludiculture is a sustainable alternative to drainage-based agriculture, intended to maintain carbon storage in peatlands. This differentiates paludiculture from agriculture like rice paddies, which involve draining, and therefore degrading wetlands.[4]

Characteristics

Impact of peatland drainage and rewetting

Peatlands store an enormous amount of carbon. Covering only 3% of the land surface, they store more than 450 gigatonnes of carbon - more than stored by forests (which cover 30% of the land surface).[5][6] Drained peatlands cause numerous negative environmental impacts such as greenhouse gas emission, nutrient leaching, subsidence and loss of biodiversity. Although only 0.3% of all peatlands are drained, peatland drainage is estimated to be responsible for 6% of all human greenhouse gas emission.[7] By making soils waterlogged when re-wetting peatlands, decomposition of organic matter (~50% carbon) will almost cease, and hence carbon will no longer escape into the atmosphere as carbon dioxide.[8][9] Peatland rewetting can significantly reduce environmental impacts caused by drainage by restoring hydrological buffering [10] and reducing the water table's sensitivity to atmospheric evaporative demand.[11] Due to the drainage of soils for agriculture in many areas, the peat soil depth and water quality has dropped significantly over the years. These problems are mitigated by re-wetting peatlands. As such, they can also make installations against rising sea levels (levees, pumps)[12] unnecessary. Wet bogs act as nitrogen sinks, whereas mineralisation and fertilisation from agriculture on drained bogs produces nitrogen run-off into nearby waters.[3]

Arguments for cultivating crops on restored peatlands

  • Cultivating peatland products sustainably can incentivise the rewetting of drained peatlands, while maintaining similar land use in previously drained agricultural areas[13]
  • Raw materials can be grown on peatlands without competing with food production for land in other areas.[14]
  • The growing of crops extracts phosphate from the land, which is important in wetlands; it also helps to extract other nutrients from water, making it suitable for post-water treatment purposes[15]
  • In many tropical countries, cultivating semi-wild native crops in peat swamp forests is a traditional livelihood which can be sustainable.[4]
  • Restored reed beds can obstruct nitrogen and phosphorus run-off from agriculture higher up in the river system and so protect lower waters.[16]
  • Paludiculture areas can act as habitat corridors and ecological buffer zones between traditional agriculture and intact peatlands[3]

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Debates around the sustainability of paludiculture

The application of the term "paludiculture" is debated as it is contingent on whether different peatland agricultural practices are considered sustainable. In terms of greenhouse gas emissions, how sustainable a paludiculture practice is deemed to be depends on the greenhouse gas measured, the species of plant and the water table level of the peatland.[4] "Paludiculture" been used to refer to cultivating native and non-native crops on intact or re-wetted peatlands. In the EU's Common Agricultural Policy, it is defined as the productive land use of wet and rewetted peatlands that preserves the peat soil and thereby minimizes CO2 emissions and subsidence.[17] A recent review of tropical peatland paludiculture[4] from the National University of Singapore evaluated wet and re-wetted management pathways in terms of greenhouse gas emissions and carbon sequestration and concluded that commercial paludiculture is only suited to re-wetted peatlands, where it is carbon negative or neutral, as opposed to intact peatlands, where it increases emissions.[4] After decades of re-wetting, can still contribute to global warming to a greater extent than intact peatlands.[18] Exceptions where paludiculture on intact peatlands may be sustainable are some traditions of cultivating native crops semi-wild in intact peat swamp forest, or gathering peatland products without active cultivation. The review also suggests that, to be sustainable, paludiculture should only use native vegetation to restore peatlands whilst producing biomass, as opposed to any wetland plants which have the possibility of surviving. This is because using non-native species may create negative peatland conditions for other native plants, and non-native plants tend to have a lower yield and lifespan in undrained or re-wetted peatlands than when grown in their native habitats or drained wetlands.[4]

Paludiculture and ecosystem services

Assessments of the sustainability of paludiculture should take into account ecosystem services besides carbon sequestration and how paludiculture can be integrated with traditional farming practices.[4] Peatlands can provide a number of other ecosystem services e.g. biodiversity conservation and water regulation. It is therefore important to protect this areas and restore degraded areas. To conserve, restore and improve management of peat lands is a cost efficient and relatively easy way to maintain ecosystem services. However, these the ecosystem services are not priced in a market and do not produce economic profit for the local communities. The drainage and cultivation, grazing, as well as peat mining on the other hand give the local communities short-term economic profits. It has therefore been argued that conservation and restoration, which has a significant and common value, needs to be subsidized by the state or the world at large.[7]

Paludiculture is not focused on nature conservation but on production, but paludiculture and conservation may complement each other in a number of ways. 1) Paludiculture can be the starting point and an intermediate stage in the process of restoring a drained peatland. 2) Paludiculture can lower the cost of the conservation project by e.g. decrease the costs of biomass removal and establishment costs. 3) Areas with paludiculture practice can provide buffer zones around the conserved peat areas. 4) Areas with paludiculture in between conservation areas can provide corridors facilitating species migration. 5) Paludiculture may increase the acceptance by the affected stakeholder to rewet once drained peatland. The support of the local communities in rewetting project are often crucial.[3]

The effect on greenhouse gas emissions of paludiculture is complex. On the one hand a higher water table will reduce the aerobic decomposition of peat and therefore the carbon dioxide emissions. But on the other hand the increased ground water table may increase anaerobic decomposition of organic matter or methanogenesis and therefore increase the emission of methane (CH4), a short-lived but more potent greenhouse gas than CO2. The emissions emanating from rewetted peatland with paludiculture will also be affected by the land-use in terms of type of use (agriculture, forestry, grazing etc.), but also in terms of used species and intensity. Traditional use of peatland has often less impact on the environment than industrial use has, but need not be sustainable in the long run and if used at a larger scale.[4]

Management

The most obvious way to maintain the ecosystem services that peatland provides is conservation of intact peatlands. This is even more true given the limited success of restoration projects especially in tropical peatlands. The conserved peatland still holds value for humans and hence provides a number of ecosystem services e.g. carbon storage, water storage and discharge. Conserving peatlands also avoids costly investments. Conservation is suggested to be a very cost-effective management practice for peatlands. The most obvious ecosystem services that the conservation management provides - i.e. carbon storage and water storage - are not easily priced on the market. Therefore, peatland conservation may need to be subsidised.[7]

To rewet peatland and thereby restore the water table level is the first step in the restoration. The intention is to recreate the hydrological function and processes of the peatland. This takes a longer time than may be expected. Studies have found that rewetted previously drained peatland had the hydrological functions - e.g. water storage and discharge capacity - somewhere between a drained and an intact peatland six years after the restoration.[4]

Undrained peatlands are recommended to be left for conservation and not used for paludiculture. Drained peatlands, on the other hand, can be rewetted and used for paludiculture often using traditional knowledge together with new science. However local communities, especially in the tropics, maintain their livelihood by draining and using the peatland in various ways e.g. agriculture, grazing, and peat mining.[7] Paludiculture can be a way to restore degraded and drained peatlands as well as maintaining an outcome for the local community.[4] For example, studies of Sphagnum cultivation on re-wetted peat bogs in Germany shows a significant decrease of greenhouse gas emission compared to a control with irrigated ditches.[19] The economic feasibility of Sphagnum cultivation on peat bogs are however still unclear.[20] The basis for paludiculture is however very different in the south, among other things because of higher population and economic pressure on peatland.[4]

Locations

Tropical Peatlands

Tropical peatlands extensively occur in Southeast Asia, mainland East Asia, the Caribbean and Central America, South,America,Romania and southern Africa. Often located in lowlands, tropical peatlands are uniquely identified by rapid rates of peat soil formation,[21] under high precipitation and high temperature regimes.[22] In contrast, a high temperature climate accelerates decomposition rates, causing degraded tropical peatlands to contribute more substantially to global green house gas emissions.[23][24] Although tropical peatlands cover only 587,000 km2, they store 119.2 Gigatonnes C at a density per unit area of 203,066 tonnes C km−2.[25] For decades, these large carbon stores have succumbed to draining in order to cater for humanity's socio-economic needs. Between 1990 and 2015, cultivation (for management including industrial and small-holder agriculture) had increased from 11 to 50% of forested peatlands in Peninsular Malaysia, Sumatra, and Borneo.[4] In Malaysia and Indonesia in the last twenty years, peat swamp forests have retreated from covering 77% of peatlands to 36%, endangering many mammals and birds in the region. In 2010, industrial agriculture covers about 3-3.1 million hectares, with oil palm accounting for 2.15 million hectares of this area.[26] The conversion of natural tropical peatlands into other land uses leads to peat fires and the associated health effects, soil subsidence increasing flood risks, substantial greenhouse gas emissions and loss of biodiversity.[27][28][29][30] Today efforts are being made to restore degraded tropical peatlands through paludiculture. Paludiculture is researched as a sustainable solution to reduce and reverse the degradation of peat swamp forests, and includes traditional local agricultural practices which predate the use of the term. Commercial paludiculture has not been trialled to the extent that it has in northern peatlands.[4] Below are examples of paludiculture practices in tropical peatlands.

Congo Basin

The Bantu people in Cuvette Central use peatlands for fishing, hunting and gathering, as well as small-scale agriculture near terra firme forests.[31]

Indonesia

In Indonesia there are three areas that could be the example of paludiculture practices such as beje system in Kutai and Banjar Tribes in East Kalimantan, Nut plantations in Segedong West Kalimantan, and Sago farming in Meranti Island district and Riau Province.[32] Sago is cultivated semi-wild near rivers in Riau. Jelutong is grown in monocultures and mixed plantings in Central Kalimantanm and in South Sumatra and Jambi, and has been traded since the mid-1800s. This trade has been stiffed by 2006 tariffs and sanctions,[33] and growing jelutong in monocultures is considered less efficient than crops like smallholder oil palm.[4]

Besides commercial production, peatland communities in Indonesia have developed less impactful practices for extracting resources. For example, Dayak communities only cultivate peatlands shallower than three meters for small-scale farming of sago and jelutong in coastal areas where the sea inputs nutrients.[4] In Sumatra, timber harvested in peat swamp forests are transported with wooden sleighs, rails and small canals in a traditional method called ongka which is less destructive than commercial logging transport.[34] Peat subsidence and CO2 emissions have still been found present in agroforestry small-holdings in re-wetted peatlands in Jambi and Central Kalimantan, even those with native species.[4]

Malaysia

In Malaysia, sago plantations are mostly semi-wild, situated near rivers such as in Sarawak, although Malaysia also imports sago from Sumatra to make noodles.[4] Peatlands are also used by the Jakun people in South East Pahang for hunting, gathering and fishing.[35]

Peru

Mestizo communities in Loreto, Peru use peatlands for hunting and gathering, and sustainably cultivating native palms, which they replant to restore the resource. They are conscious of the limits to the resource and the need to avoid wasteful felling during harvest.[36]

Northern Peatlands

The greater part of the world's peatlands occur in the northern hemisphere, encompassing both boreal and temperate regions. Global estimates indicate that northern peatlands cover 3,794,000 km2, storing about 450 Gt of C at a density of approximately 118,318 t C km−2 . Peatlands form in poorly drained areas under conditions of high precipitation and low temperature . 66% of northern peatlands are found in Eurasia and 34% in North America. About 60% of these peatlands (2718×103 km2) are perennially frozen, with approximately 2152×103 km2 occurring in Eurasia and 565×103 km2 in North America . In the European Union (25 countries in Europe), peatlands cover approximately 291×103 km2, of which nearly 55% are in Finland and Sweden . Peatlands are more common in Belarus and Ukraine, where they occupy approximately 497×103 km2. Both boreal and temperate peatlands are primarily formed from bryophytes and graminoids, displaying slower rates of accumulation and decomposition comparative to the tropics . Northern peatlands have been drained for agriculture, forestry, and peat mining for fuel and horticulture. Historical uses of intact northern peatlands include fishing, hunting, grazing and gathering berries. Paludiculture is not widely established commercially in northern peatlands and most research projects identified below are ongoing. Many have not yet published peer-reviewed results. Most are focused on Sphagnum and reed farming. Rather than excavating decomposed Sphagnum as peat, non-decomposed reed fibres are harvested in cycles, as a renewable source of biomass. Sphagnum fibres can be used as a growing substrate, packaging to protect plants in transport, or to reintroduce moss when restoring other peatlands.

Belarus

The University of Greifswald and Belarusian State University are researching reed beds in Naroch National Park as filters to reduce nitrogen and phosphorus run-off from degraded peatlands agriculture into the Baltic. With research scheduled from January 2019 to September 2021, they aim to investigate the potential for harvesting reeds in the area to incentivise reed bed management.[16]

Canada

Paludiculture practices include cultivating Sphagnum and cattail. One of the largest research projects was carried out between 2006 and 2012 by researchers from Université Laval in Quebec, trialling Sphagnum farming in eastern Canada. Their bog site, on the Acadian Peninsula, was previously used for block-cutting peat for fuel and so consisted of ditches of Sphagnum and raised areas of other vegetation. They found that Sphagnum farming could be practiced large-scale in the ditches, although they recommend active irrigation management for more consistent harvests.[37]

Finland

The Finnish Forest Research Institute and Vapo Oy, Finland's largest peat mining company, manage around 10 hectares for experiments in cultivating Sphagnum for restoration and to produce substrates.[38]

Germany

The Greifswald Mire Center lists six research projects for cultivating Sphagnum as a raw material for substrates and restoring moors in Germany: Hankhausen, Drenth, Parovinzialmoor, Ramsloh, Sedelsberg and Südfeld. The Drenth and Parovinzialmoor projects, running from 2015 to 2019, included testing varying irrigation and drainage methods. They found that peat moss can be grown on black peat.[39] In Sedelsberg, researchers found cultivating Sphagnum on black peat to be "expensive and time-consuming". Researchers at the Südfeld project in 2002 observed a small increase in peat moss, and increasing reeds, cattails, and willows.[38] Researchers are also investigating reed and cattail cultivation.[40]

In Mecklenburg -West Pomerania, Greifswald University's ongoing Paludi-Pellets-Project aims to create an efficient biofuel source from sedges, reeds and canary grass in the form of dry pellets.[41]

Ireland

Renewable energy company Bord na Móna began peat moss trials in 2012 to restore Sphagnum in raised bogs for potential horticulture.[38]

Lithuania

Lithuania's first peat moss cultivation trial was in 2011, in Aukštumala Moor in Nemunas Delta Regional Park. Researchers from Vilnius Institute of Botany transplanted sections of Sphagnum from a neighbouring degraded raised bog to the exposed peat surface. They found that 94% of the patches survived and expanded to the exposed peat.[38]

The ongoing "DESIRE" project is investigating peatland restoration and paludiculture in the Neman River catchment area to reduce nutrient run-off into the Baltic.[16]

The Netherlands

In the ongoing "Omhoog met het Veen - AddMire in the Netherlands" research project, Landscape Noord-Holland aims to investigate the restoration of reed beds and wet heathlands on moors previously converted for agriculture as well as to raise awareness about peatland degradation. The project is intended to promote paludiculture as an alternative income from agriculture. Researchers have rewetted 8 hectares, including for a water storage buffer area for the peat moss experiments. They are measuring the effects of soil erosion and atmospheric nitrogen on the growth of peat moss and the resulting greenhouse gas emissions and soil chemistry.[40]

Russia

Russia has the largest area of peatlands of all the northern circumpolar countries with the world's largest peatland being the West Siberian mire massif and the largest in Europe the Polistovo-Lovatsky mire in northern Russia.[42][43] An estimate derived from the digital soil database of Russia at a geographical scale of 1:5 million,[44] indicates that the area of soils with a peat depth of more than 30 cm is nearly 2210×103 km2. Approximately 28% occurs in the zone of seasonally frozen soils, nearly 30% in the zone of sporadic and discontinuous permafrost, and 42% in the zone of continuous permafrost. Peat with a depth of more than 50 cm tends to be dominant in the Northern and Middle Taiga zones, but is uncommon in the Tundra zone.

Ongoing restoration does not seem to include paludiculture. The Wetland International together with the Institute of Forest Science of the Russian Academy of Sciences and the Michael Succow Foundation, implemented a major peatland restoration project in response to the extensive peat fires in the summer of 2010 in the Moscow region. The project was initiated within the framework of co-operation between the Russian Federation and the Federal Republic of Germany to the spearhead the ecological rewetting of peatlands and represents one of the largest peatland ecosystem restoration projects in the world. To date, over 35,000 ha of drained peatlands have been restored using ecological methods with another 10,000 ha currently underway.[45]

Examples of potential crops for cultivation on wet and rewetted peatlands

The Database of Potential Paludiculture plants (DPPP) lists more than 1,000 wetland plants,[46] but only a minor fraction is suitable for paludiculture. Examples for potential and tested paludicultures are provided in the table below.

Species Region & sites Utilization Greenhouse Gas Emissions on Re-wetted Sites
Alder (Alnus glutinosa) Central Europe,

Fen, oligo-eutrotrophic

Timber, biofuel
Canadian Poplar (Populus × canadensis)[4] Northern Peatlands Biofuel
Cattails (Typha sp.) Central Europe, North America, West Africa

Fen, polytrophic

Construction material (e.g. insulation), solid fuel, fermentation, fibers Found to reduce CH4 emissions, with a negligible effect on N2O[4]
Chokeberries ( Aronia melanocarpa )[47] Northern peatlands Food
Cloudberries (Rubus chamaemorus)[47] Northern peatlands Food
Common reed (Phragmites australis) Europe, China,

Fen, polytrophic

Construction material (e.g. thatching), paper, solid fuel, fermentation
Cranberries ( Vaccinium oxycoccos )[47] Northern peatlands Food
Giant Reed (Arundo donax)[4] Northern Peatlands Biofuel
Illipe Nut (Shorea stenoptera) Tropics Cocoa butter substitute
Jelutong (Dyera costulata) [4] Cultivated in Indonesia

Native to Tropical Peat Swamp Forests

Latex
Karet Oblong (palaquium gutta)[4] Tropics Latex
Lingonberries (Vaccinium vitis-idaea )[47] Northern peatlands Food
Papyrus (Cyperus papyrus)[4] Tropics Shown to sequester carbon, but produce CH4[4]
Red Balau (Shorea balangeran) Native to Peat Swamp Forests, Tropics Timber Shown to produce high CH4 emissions[4]
Reed Canary Grass (Phalaris arundinacea) Northern Peatlands Biofuel Shown to reduce N2O emissions, but substantially increase CH4[4]
Round-leaved sundew (Drosera rotundifolia)[48] Raised bog Herbal medicine for cough diseases
Sago (Metroxylon sagu) Cultivated semi-wild in Malaysia, Maluku Islands, New Guinea, Riau, Borneo, Sumatra[4] Native to Tropical Peat Swamp Forests Starch
Sphagnum sp. Worldwide

Raised bog, oligotrophic

Growing media e.g. for propagating orchids, and to substitute peat in other substrates.

Roof greening, miniature models, garden landscaping, top dressing containers and flower beds, lining wire framed hanging baskets, making wreaths, compostable plant pots to reduce plastic use, packaging seedlings for transport and protection when cellar storing root vegetables. Restoring peatlands, e.g. of cutover bog when using the moss layer transfer technique.[37]

Demonstrated to reduce CH4 emissions, negligible effect on N2O[4]
Water buffaloes Europe, Asia Cheese (mozarella), meat, conservation grazing
White Willow (Salix alba)[4] Northern Peatlands Biofuel

References

  1. ↑ Definition from mowi.botanik.uni-greifswald.de
  2. ↑ Wichtmann, W., Schröder, C. & Joosten, H. (eds.) (2016): Paludiculture - productive use of wet peatlands - Climate protection - biodiversity - regional economic benefits. 272 p. ISBN:978-3-510-65283-9
  3. ↑ 3.0 3.1 3.2 3.3 "MoorWissen | Paludikultur | Hintergrund". https://www.moorwissen.de/de/paludikultur/hintergrund/hintergrund.php. 
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 Tan, Zu Dienle; Lupascu, Massimo; Wijedasa, Lahiru S. (2021-01-20). "Paludiculture as a sustainable land use alternative for tropical peatlands: A review" (in en). Science of the Total Environment 753: 142111. doi:10.1016/j.scitotenv.2020.142111. ISSN 0048-9697. PMID 33207474. Bibcode: 2021ScTEn.753n2111T. https://www.sciencedirect.com/science/article/abs/pii/S0048969720356400. 
  5. ↑ Bridgham, S. D., Megonigal, J. P., Keller, J. K. et al.: The Carbon Balance of North American Wetlands. Wetlands 26, 4/2006, S. 889–916
  6. ↑ Dixon, R. K., Solomon, A. M., Brown, S. et al.: Carbon Pools and Flux of Global Forest Ecosystems. Science Vol. 263, 1994, 185-190
  7. ↑ 7.0 7.1 7.2 7.3 FAO and Wetlands International, Hans Joosten, Marja-Liisa Tapio-Biström & Susanna Tol Hrsg.: Peatlands - guidance for climate change mitigation by conservation, rehabilitation and sustainable use. 2. Auflage, Rom 2012. ISBN:978-92-5-107302-5 FAO-Broschüre "Peatlands" (PDF; 5,4 MB)
  8. ↑ EOS magazine, January 2017, De voordelen van natte akkers
  9. ↑ According to Leon Lamers, one hectare of drained marshland emits 20 to 25 tons of CO2 per year
  10. ↑ Ahmad, Sate; Liu, Haojie; Günther, Anke; Couwenberg, John; Lennartz, Bernd (20 December 2020). "Long-term rewetting of degraded peatlands restores hydrological buffer function" (in en). Science of the Total Environment 749: 141571. doi:10.1016/j.scitotenv.2020.141571. ISSN 0048-9697. PMID 33370894. Bibcode: 2020ScTEn.749n1571A. 
  11. ↑ Ahmad, Sate; Liu, Haojie; Alam, Shajratul; Günther, Anke; Jurasinski, Gerald; Lennartz, Bernd (2021). "Meteorological Controls on Water Table Dynamics in Fen Peatlands Depend on Management Regimes" (in English). Frontiers in Earth Science 9: 189. doi:10.3389/feart.2021.630469. ISSN 2296-6463. Bibcode: 2021FrEaS...9..189A. 
  12. ↑ Omhoog met het veen
  13. ↑ "MoorWissen | Startseite". https://www.moorwissen.de/de/index.php. 
  14. ↑ "MoorWissen | Paludikultur". https://www.moorwissen.de/de/paludikultur/paludikultur.php. 
  15. ↑ This purpose was demonstrated in the Aquafarm project by Wageningen University
  16. ↑ 16.0 16.1 16.2 "DESIRE Development of sustainable peatland management by restoration and paludiculture for nutrient retention and other ecosystem services in the Neman river catchment - Fakultät - Universität Greifswald". https://rsf.uni-greifswald.de/lehrstuehle/wiwi/avwl/lehrstuhl-beckmann/forschung/desire-development-of-sustainable-peatland-management-by-restoration-and-paludiculture-for-nutrient-retention-and-other-ecosystem-services-in-the-neman-river-catchment/. 
  17. ↑ Greifswald Mire Centre, Wetlands International, NUI Galway, Luke, ELF, Foundation for Peatlands: DEFINITION OF PALUDICULTURE IN THE CAP [1]
  18. ↑ Wilson, David; Farrell, Catherine A.; Fallon, David; Moser, Gerald; Müller, Christoph; Renou-Wilson, Florence (December 2016). "Multiyear greenhouse gas balances at a rewetted temperate peatland" (in en). Global Change Biology 22 (12): 4080–4095. doi:10.1111/gcb.13325. PMID 27099183. Bibcode: 2016GCBio..22.4080W. http://doi.wiley.com/10.1111/gcb.13325. 
  19. ↑ Günther, A.; Jurasinski, G.; Albrecht, K.; Gaudig, G.; Krebs, M.; Glatzel, S. (2017-04-20). "Greenhouse gas balance of an establishing Sphagnum culture on a former bog grassland in Germany". Mires and Peat (20): 1–16. doi:10.19189/MaP.2015.OMB.210. ISSN 1819-754X. https://doi.org/10.19189/MaP.2015.OMB.210. 
  20. ↑ Wichmann, S.; Prager, A.; Gaudig, G. (2017-04-20). "Establishing Sphagnum cultures on bog grassland, cut-over bogs, and floating mats: procedures, costs and area potential in Germany". Mires and Peat (20): 1–19. doi:10.19189/MaP.2016.OMB.235. ISSN 1819-754X. https://doi.org/10.19189/MaP.2016.OMB.235. 
  21. ↑ R.A.J. Wüst, J. Rieley, S. Page, S. van der Kaars. Peatland evolution in Southeast Asia during the last 35,000cal years: implications for evaluating their carbon storage potential. J.O. Rieley, C.J. Banks, B. Radjagukguk (Eds.), Carbon-Climate-Human Interaction on Tropical Peatland. Proceedings of the International Symposium and Workshop on Tropical Peatland, Yogyakarta, EU CARBOPEAT and RESTORPEAT Partnership, Gadjah Mada University, Indonesia and University of Leicester, United Kingdom (2007), p. 19
  22. ↑ J.P. Andriesse Nature and management of tropical peat soils FAO Soils Bull., 59 (1988)
  23. ↑ Page, S.E.; Baird, A.J. (2016). "Peatlands and Global Change: Response and Resilience". Annual Review of Environment and Resources 41: 35–57. doi:10.1146/annurev-environ-110615-085520. 
  24. ↑ Page, Susan; Hosciło, Agata; Wösten, Henk; Jauhiainen, Jyrki; Silvius, Marcel; Rieley, Jack; Ritzema, Henk; Tansey, Kevin et al. (2009). "Restoration Ecology of Lowland Tropical Peatlands in Southeast Asia: Current Knowledge and Future Research Directions". Ecosystems 12 (6): 888–905. doi:10.1007/s10021-008-9216-2. 
  25. ↑ Leifeld, J.; Menichetti, L. (2018). "The underappreciated potential of peatlands in global climate change mitigation strategies". Nature Communications 9 (1): 1071. doi:10.1038/s41467-018-03406-6. PMID 29540695. Bibcode: 2018NatCo...9.1071L. 
  26. ↑ Evers, Stephanie; Yule, Catherine M.; Padfield, Rory; O'Reilly, Patrick; Varkkey, Helena (February 2017). "Keep wetlands wet: the myth of sustainable development of tropical peatlands - implications for policies and management" (in en). Global Change Biology 23 (2): 534–549. doi:10.1111/gcb.13422. PMID 27399889. Bibcode: 2017GCBio..23..534E. http://doi.wiley.com/10.1111/gcb.13422. 
  27. ↑ Jaafar, Zeehan; Loh, Tse-Lynn (2014). "Linking land, air and sea: Potential impacts of biomass burning and the resultant haze on marine ecosystems of Southeast Asia". Global Change Biology 20 (9): 2701–2707. doi:10.1111/gcb.12539. PMID 24604729. Bibcode: 2014GCBio..20.2701J. 
  28. ↑ Harrison, M.E.; Rieley, J.O. (2018). "Tropical peatland biodiversity and conservation in Southeast Asia: FOREWORD". Mires and Peat (22). doi:10.19189/MaP.2018.OMB.382. 
  29. ↑ Huijnen, V.; Wooster, M. J.; Kaiser, J. W.; Gaveau, D. L. A.; Flemming, J.; Parrington, M.; Inness, A.; Murdiyarso, D. et al. (2016). "Fire carbon emissions over maritime southeast Asia in 2015 largest since 1997". Scientific Reports 6: 26886. doi:10.1038/srep26886. PMID 27241616. Bibcode: 2016NatSR...626886H. 
  30. ↑ Marlier, Miriam E.; Defries, Ruth S.; Kim, Patrick S.; Koplitz, Shannon N.; Jacob, Daniel J.; Mickley, Loretta J.; Myers, Samuel S. (2015). "Fire emissions and regional air quality impacts from fires in oil palm, timber, and logging concessions in Indonesia". Environmental Research Letters 10 (8): 085005. doi:10.1088/1748-9326/10/8/085005. Bibcode: 2015ERL....10h5005M. 
  31. ↑ Dargie, Greta C.; Lawson, Ian T.; Rayden, Tim J.; Miles, Lera; Mitchard, Edward T. A.; Page, Susan E.; Bocko, Yannick E.; Ifo, Suspense A. et al. (April 2019). "Congo Basin peatlands: threats and conservation priorities" (in en). Mitigation and Adaptation Strategies for Global Change 24 (4): 669–686. doi:10.1007/s11027-017-9774-8. ISSN 1381-2386. http://link.springer.com/10.1007/s11027-017-9774-8. 
  32. ↑ "FAO in Indonesia: Facts of Indonesia Peatland and Paludiculture Practices.". http://www.fao.org/indonesia/news/detail-events. 
  33. ↑ Tata, Hesti L.; van Noordwijk, Meine; Jasnari; Widayati, Atiek (2016-08-01). "Domestication of Dyera polyphylla (Miq.) Steenis in peatland agroforestry systems in Jambi, Indonesia" (in en). Agroforestry Systems 90 (4): 617–630. doi:10.1007/s10457-015-9837-3. ISSN 1572-9680. https://doi.org/10.1007/s10457-015-9837-3. 
  34. ↑ Kuniyasu, M (2002). "Environments and people of Sumatran peat swamp forests II: distribution of villages and interactions between people and forests". Southeast Asian Stud. 40: 87–108. 
  35. ↑ Ramakrishna, Sundari (2005). "Conservation and sustainable use of peat swamp forests by local communities in South East Asia". Suo 56: 27–38. https://www.cabdirect.org/cabdirect/abstract/20053082295. 
  36. ↑ Schulz, Christopher; Martín Brañas, Manuel; Núñez Pérez, Cecilia; Del Aguila Villacorta, Margarita; Laurie, Nina; Lawson, Ian T.; Roucoux, Katherine H. (July 2019). "Uses, cultural significance, and management of peatlands in the Peruvian Amazon: Implications for conservation" (in en). Biological Conservation 235: 189–198. doi:10.1016/j.biocon.2019.04.005. https://linkinghub.elsevier.com/retrieve/pii/S0006320718316951. 
  37. ↑ 37.0 37.1 Pouliot, Rémy; Hugron, Sandrine; Rochefort, Line (2015-01-01). "Sphagnum farming: A long-term study on producing peat moss biomass sustainably" (in en). Ecological Engineering 74: 135–147. doi:10.1016/j.ecoleng.2014.10.007. ISSN 0925-8574. https://www.sciencedirect.com/science/article/abs/pii/S0925857414005436. 
  38. ↑ 38.0 38.1 38.2 38.3 "MoorWissen | Paludikultur | Informationsdatenbanken | Internationale Projekte". https://www.moorwissen.de/de/paludikultur/datenbanken/projekte.php. 
  39. ↑ Gaudig, G.; Krebs, M.; Prager, A.; Wichmann, S.; and 30 others (2018-08-28). "Sphagnum farming from species selection to the production of growing media: a review". Mires and Peat (20): 1–30. doi:10.19189/MaP.2018.OMB.340. ISSN 1819-754X. https://doi.org/10.19189/MaP.2018.OMB.340. 
  40. ↑ 40.0 40.1 "MoorWissen | Paludiculture| Projects | Prima". https://www.moorwissen.de/en/paludikultur/projekte/prima/index.php. 
  41. ↑ Dahms, Tobias; Oehmke, Claudia; Kowatsch, Astrid; Abel, Susanne; Wichmann, Sabine; Wichtmann, Wendelin; Schröder, Christian (2017). "Paludi-Pellets-Broschüre Halmgutartige Festbrennstoffe aus nassen Mooren". MoorWissen. https://www.moorwissen.de/doc/publikationen/paludi_pellets_broschuere/downloads/Dahms%20et%20al.%20(2017)%20Paludi-Pellets-Brosch%C3%BCre.pdf. 
  42. ↑ Bartalev, S.A., Isaev, A.S., Shugart, H.H., et al. 2004a. Terrestrial ecosystem dynamics. In: Groisman, P.Y. and Bartalev, S.A. (Eds.), Northern Eurasia Earth Science Partnership Initiative: Science Plan, pp. 18–28. (Available from http://www.neespi.org/science/).
  43. ↑ Bartalev, S.A., Isaev, A.S., Shugart, H.H., et al. 2004b. Scientific Background Appendix Chapter 3. In: Groisman, P.Y. and Bartalev, S.A. (Eds), Northern Eurasia Earth Science Partnership Initiative: Science Plan, pp. 168–217. (Available from http://www.neespi.org/science/).
  44. ↑ Stolbovoi, V. and McCallum, I. 2002. Land resources of Russia. International Institute for Applied Systems Analysis and the Russian Academy of Science, Laxenburg, Austria. CD-ROM. (Available from http://www.iiasa.ac.at/Research/FOR/russia_cd/lcov_des.htm).
  45. ↑ "Restoring Peatlands in Russia I Russia". https://unfccc.int/climate-action/momentum-for-change/planetary-health/restoring-peatlands-in-russia-i-russia. 
  46. ↑ Abel, S., Couwenberg, J., Dahms, T. & Joosten, H. (2013): The Database of Potential Paludiculture Plants (DPPP) and results for Western Pomerania. – Plant Div. Evol. 130: 219–228
  47. ↑ 47.0 47.1 47.2 47.3 "MoorWissen | Paludikultur | im Detail | Verwertungsoptionen". https://www.moorwissen.de/de/paludikultur/imdetail/verwertungsoptionen.php. 
  48. ↑ "MoorWissen | Paludikultur | Hintergrund | Moorstandorte | Hochmoor". https://www.moorwissen.de/de/paludikultur/hintergrund/moorstandorte/hochmoor.php. 



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