METHANE EMISSION FROM FORESTED SWAMPS IN XIAOXING’AN MOUNTAINS, NORTHEASTERN CHINA

doi:10.3773/j.issn.1005-264x.2009.03.012

Abstract

Abstract:

Aims Our major objectives were to quantify methane fluxes and variations during growing season and understand key factors controlling methane fluxes in five natural forested swamps.

Methods We measured methane fluxes from natural forested swamps in Xiaoxing’an Mountains from early June to late October 2007, using the static opaque chamber and gas chromatography technique.

Important findings We observed large seasonal variations in methane fluxes in Alnus sibirica swamp, Larix gmelinii-moss swamp and Larix gmelinii-Sphagnum spp. swamp, but smaller variations in Betula platyphylla swamp and Larix gmelinii-Carex schmidtii swamp. Episodic flux was detected in Larix gmelinii-Sphagnum spp. swamp, which greatly influenced methane fluxes during the growing season. Alnus sibirica swamp, Larix gmelinii-moss swamp and Larix gmelinii-Sphagnum spp. swamp were sources of atmospheric methane, but Betula platyphylla swamp and Larix gmelinii-Carex schmidtii swamp were sinks, and the average methane emission rates during the growing season were (56.08 ± 200.38), (15.34 ± 14.89), (0.64 ± 0.88), (-0.88 ± 1.76) and (-0.94 ± 3.00 ) mg·m-2·d-1, respectively. Average methane emission rates were higher with higher water table among the forested swamps, except for Larix gmelinii-Sphagnum spp. swamp. There was a critical point of atmospheric methane source or sink when the water table was at -34.5 ~ -30.8 cm; forested swamps with average water table below this value were atmospheric methane sinks. Effects of temperature on methane fluxes were complex, as temperature may show positive or negative and significant or non-significant correlations. Aboveground biomass of trees may be the best indicator of methane emissions from these forested swamps, because there were strong negative correlations between them.

Key words: methane emission, forested swamps, water table, temperature, vegetation

SUN Xiao-Xin, MU Chang-Cheng, SHI Lan-Ying, CHENG Wei, LIU Xia, WU Yun-Xia, FENG Deng-Jun. METHANE EMISSION FROM FORESTED SWAMPS IN XIAOXING’AN MOUNTAINS, NORTHEASTERN CHINA[J]. Chin J Plant Ecol, 2009, 33(3): 535-545.

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URL: https://www.plant-ecology.com/EN/10.3773/j.issn.1005-264x.2009.03.012

https://www.plant-ecology.com/EN/Y2009/V33/I3/535

Figures/Tables 9

Table 1 Types and characteristics of forested swamps

Fig.1 Seasonal variations of CH4 flux in different forested swamps

Table 2 Mean CH4 flux during growing season (mean±SD)

Fig.2 Correlation between CH4 flux and water table of Alnus sibirica swamp

Table 3 Correlation between CH4 flux and soil/peat temperature

Fig.3 Correlations between mean CH4 flux and above-ground biomass of herbs

Fig.4 Correlations between mean CH4 flux and above-ground biomass of shrub

Fig.5 Correlation between mean CH4 flux and above-ground biomass of tree

Fig.6 Seasonal variations of atmospheric pressure and water table of Larix gmelinii-Sphagnum swamp

References 44

[1]	Bellisario LM, Bubier JL, Moore TR, Chanton JP (1999). Controls on CH4emissions from a northern peatland. Global Biogeochemical Cycles, 13,81-91. DOI URL
[2]	Brix H, Sorrell BK, Lorenzen B (2001). Are Phrag-mites-dominated wetlands a net source or net sink of greenhouse gases? Aquatic Botany, 69,313-324. DOI URL
[3]	Bubier JL, Moore TR (1994). An ecological perspective on methane emission from northern wetlands. Trends in Ecology and Evolution, 9,460-464. DOI URL
[4]	Bubier JL, Moore TR, Bellisario LM, Comer NT, Crill PM (1995). Ecological controls on methane emission from a northern peatland complex in the zone of discon-tinuous permafrost, Manitoba, Canada. Global Bio-geochemical Cycles, 9,455-470.
[5]	Ding WX, Cai ZC, Tsuruta H, Li XP (2002). Effect of standing water depth on methane emissions from freshwater marshes in northeast China. Atmospheric Environment, 36,5149-5157. DOI URL
[6]	Ding WX, Cai ZC, Tsuruta H, Li XP (2003). Key factors affecting spatial variation of methane emissions from freshwater marshes. Chemosphere, 51,167-173. DOI URL
[7]	Ding WX, Cai ZC, Wang DX (2004). Preliminary budget of methane emissions from natural wetlands in China. Atmospheric Environment, 38,751-759. DOI URL
[8]	Duan XN, Wang XK, Mu YJ, Ouyang ZY (2005). Seasonal and diurnal variations in methane emissions from Wuliangsu Lake in arid regions of China. Atmospheric Environment, 39,4479-4487. DOI URL
[9]	Harriss RC, Sebacher DI, Day FP (1982). Methane flux in the great Dismal swamp. Nature, 297,673-674. DOI URL
[10]	Hirota M, Tang YH, Hu QW, Hirata S, Kato T, Mo WH, Cao GM, Mariko S (2004). Methane emissions from different vegetation zones in a Qinghai-Tibetan Plateau wetland. Soil Biology&Biochemistry, 36,737-748.
[11]	Huang GH (黄国宏), Xiao DN (肖笃宁), Li YX (李玉祥), Chen GX (陈冠雄), Yang YC (杨玉成), Zhao CW (赵长伟) (2001). CH4emission from the reed wetland. Acta Ecologica Sinica (生态学报), 21,1494-1497. (in Chinese with English abstract)
[12]	Intergovernmental Panel on Climate Change IPCC (2007). Contribution of Working Group I to the fourth assess-ment report of the intergovernmental panel on climate change.In:Solomo SD, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL eds. Climate Change in2007:The Physical Science Basis. Cambridge University Press. Cambridge, UK.
[13]	Jauhiainen J, Takahashi H, Heikkinen JEP, Martikainen P, Vasander H (2005). Carbon fluxes from a tropical peat swamp forest floor. Global Change Biology, 11,1788-1797. DOI URL
[14]	Jin HJ (金会军), Wu J (吴杰), Cheng GD (程国栋), Nakano T (中野智子), Sun GY (孙广友) (1999). Methane emissions from wetlands on the Qinghai-Tibetan Pla-teau. Chinese Science Bulletin (科学通报), 44,1758-1762. (in Chinese)
[15]	Kang H, Freeman C (2002). The influence of hydrochemis-try on methane emissions from two contrasting north-ern wetlands. Water, Air, and Soil Pollution, 141,263-272. DOI URL
[16]	Lang HQ (郎惠卿) (1999). Wetland Vegetation in China (中国湿地植被). Science Press, Beijing, 35-74. (inChinese).
[17]	Lelieveld J, Crutzen P, Dentener FJ (1998). Changing con-centration, lifetime and climate forcing of atmosphericmethane. Tellus, 50B,128-150.
[18]	Liu XT (刘兴土), Lü XG (吕宪国), Zhao KY (赵魁义) (2007). Wetlands resource and restoration.In:Li WH (李文华) ed. Important Consultation Item of ChineseAcademy of Engineering:Several Stratagem Issues About Water and Soil Resource Configure, Environ-ment Protection, and Sustainable Development in Northeast, China-Volume of Forest:Forest and Wet-lands Restoration and Stratagem of Forest Develop-ment in Northeast, China (东北地区有关水土资源配制、生态与环境保护和可持续发展的若干战略问题研究-林业卷:东北地区森林与湿地保育及林业发展战略研究), Science Press, Beijing,409-449. (in Chi-nese).
[19]	Lu CY (卢昌义), Ye Y (叶勇), Huang YS (黄玉山), Tan FY (谭凤仪) (2000). Methane fluxes from mangrove communities at Dongzhai harbour, Hainan. Acta Phy-toecologica Sinica (植物生态学报), 24,87-90. (in Chinese with English abstract)
[20]	Mathews E, Fung I (1987). Methane emission from naturawetlands:global distribution, area and environmenta characteristics of sources. Global Biogeochemical Cy-cles, 1,61-86.
[21]	Mattson MD, Likens GE (1990). Air pressure and methanefluxes. Nature, 347,718-719.
[22]	Megonigal JP, Schlesinger WH (2002). Methane-limitedmethanotrophy in tidal freshwater swamps. GlobalBiogeochemical Cycles, 16,1088-1098.
[23]	Melling L, Hatano R, Kah JG (2005). Methane fluxes from three ecosystems in tropical peatland of Sarawak, Ma-laysia. Soil Biology&Biochemistry, 37,1445-1453.
[24]	Moore TR, Knowles R (1990). Methane emission from fen, bog and swamp peatlands in Quebec. Biogeochemistry, 11,45-61.
[25]	Moore TR, Roulet NT (1993). Methane flux:water table relations in northern wetlands. Geophysical Research Letters, 20,587-590. DOI URL
[26]	Morrissey LA, Livingston GP (1992). Methane emissions from Alaska Arctic Tundra:an assessment of local spatial variability. Journal of Geophysical Research, 97,16661-16670. DOI URL
[27]	Pulliam WM (1993). Carbon dioxide and methane exports from a southeastern floodplain swamp. Ecological Monographs, 63,29-53. DOI URL
[28]	Rask H, Schoenau J, Anderson D (2002). Factors influenc-ing methane flux from a boreal forest wetland in Sas-katchewan, Canada. Soil Biology&Biochemistry, 34,435-443.
[29]	Saarnio S, Alm J, Silvola J, Lohila A, Nykänen H, Marti-kainen PJ (1997). Seasonal variation in CH4emissions and production and oxidation potentials at microsite on an oligotrophic pine fen. Oecologia, 110,414-422. DOI PMID
[30]	Scott KJ, Kelly CA, Rudd JWM (1999). The importance of floating peat to methane fluxes from flooded peatlands. Biogeochemistry, 47,187-202.
[31]	Segers R (1998). Methane production and methane con-sumption―a review of processes underlying wetland methane fluxes. Biogeochemistry, 41,23-51. DOI URL
[32]	Spahni R, Chappellaz J, Stocker TF, Loulergue L, Hausammann G, Kawamura K, Flückiger J, Schwander J, Raynaud D, Massin-Delmotte V, Jouzel J (2005). Atmospheric methane and nitrous oxide of the late Pleistocene from Antarctic ice cores. Science, 310,1317-1321. DOI URL
[33]	Song CC (宋长春), Wang YY (王毅勇), Wang YS (王跃思), Zhao ZC (赵志春) (2006). Character of the greenhouse gas emission in the freshwater mire under human activities. Scientia Geographica Sinica (地理科学), 26,82-86. (in Chinese with English abstract)
[34]	Song CC (宋长春), Yan BX (阎百兴), Wang YS (王跃思), Wang YY (王毅勇), Lou YJ (娄彦景), Zhao ZC (赵志春) (2003). Fluxes of carbon dioxide and methane from swamp and impact factors in Sanjiang Plain, China. Chinese Science Bulletin (科学通报), 48,2473-2477. (in Chinese)
[35]	Sugimoto A, Fujita N (1997). Characteristics of methane emission from different vegetations on a wetland. Tel-lus, 49B,382-392.
[36]	Van der Pol-van Dasselaar A, van Beusichem ML Oenema O (1999). Determinants of spatial variability of meth-ane emissions from wet grasslands on peat soil. Bio-geochemistry, 44,221-237.
[37]	Vann CD, Megoniga JP (2003). Elevated CO2and water depth regulation of methane emissions:comparison of woody and non-woody wetland plant species. Biogeo-chemistry, 63,117-134.
[38]	Wang YS, Wang YH (2003). Quick measurement of CO2, CH4and N2O emissions from a short-plant ecosystem. Advances in Atmospheric Sciences, 20,842-844. DOI URL
[39]	Wang YS (王跃思) (2004). Chamber methods for measur-ing carbon exchange.In:Chen PQ (陈泮勤) ed. Carbon Circling in Earth System (地球系统碳循环). Sci-ence Press, Beijing, 130-145. (in Chinese)
[40]	Wang ZP, Han XG, Li LH (2006). Methane emission patches in riparian marshes of the Inner Mongolia. Atmospheric Environment, 40,5528-5532. DOI URL
[41]	Whiting GJ, Chanton JP (1993). Primary production control of methane emission from wetlands. Nature, 364,794-795. DOI URL
[42]	Wilson JO, Crill PM, Bartlett KB, Sebacher DI, Harriss RC, Sass RL (1989). Seasonal variation of methane emis-sion from temperate swamp. Biogeochemistry, 8,55-71. DOI URL
[43]	Windsor J, Moore TR, Roulet NT (1992). Episodic fluxes of methane from subarctic fens. Canadian Journal of Soil Science, 72,441-452. DOI URL
[44]	Yang JS (杨继松), Li JS (刘景双), Wang JD (王金达), Yu JB (于君宝), Sun ZG (孙志高), Li XH (李新华) (2006). Emissions of CH4and N2O from wetland in the Sanjiang Plain. Journal of Plant Ecology (Chinese Version) (植物生态学报), 30,432-440. (in Chinese with English abstract) DOI