Peatland degradation reduces methanogens and methane emissions from surface to deep soils

doi:10.1016/j.ecolind.2019.105488

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Peatland degradation reduces methanogens and methane emissions from surface to deep soils
	Yang, Gang 6,7; Tian, Jianqing 3; Chen, Huai 2,7; Jiang, Lin 4; Zhan, Wei 2,7; Hu, Ji 2,7; Zhu, Erxiong 4; Peng, Changhui 4,5; Zhu, Qiuan 4; Zhu, Dan 2,7
刊名	ECOLOGICAL INDICATORS
	2019
卷号	106 页码:105488
关键词	Archaeal abundance Global change Carbon cycles Peatland
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2019.105488
产权排序	2
文献子类	Article
英文摘要	Peatland degradation is expected to increase the rate of aerobic decomposition in surface soil (0-30 cm). Carbon stored in both the subsurface (30-60 cm) and deeper layers ( > 60 cm) of peatlands is also expected to be metabolized after degradation. However, little is known about how methane were emissions from subsurface and the deeper layers of peatlands during degradation. Three peatland degradation stages: S1, intact fen with high water table; S2, lightly degraded fen with a fluctuating water table; S3, heavily degraded fen with a lower water table were chosen to quantify the differences in CH4 emissions at different peatland degradation stages. CH4 emissions and methanogens of subsurface and deep soil were also measured to reveal the contribution rates of subsurface methane emission in this study. After four-years experiment, we found that the abundance of methanogens and methane emissions decreased as peatlands were more heavily degraded. We also found that the contribution rate of methane emission decreased from peat surface to subsurface and deep layer, and this trend varied with peatland degradation. A higher contribution rate was found in the subsurface methane emissions from S1 (32.63%) and S2 (19.94%). Importantly, when peatlands were heavily degraded, the subsurface changed from a CH4 source to a sink. Decreased methane emissions of the degraded peatlands was also associated with a high abundance of methanogens (R-2 = 0.75, p < 0.05). Thus, we conclude that peatland degradation reduces methanogens and methane emissions from both surface and deep soils. Peatland degradation induced aerobic condition and substrate limitation are the main reasons for the reduced methane emission from Zoige peatland.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	DISSOLVED ORGANIC-CARBON ; SUBSURFACE PEAT ; TIBETAN PLATEAU ; CH4 EMISSIONS ; CLIMATE ; FLUXES ; DECOMPOSITION ; RESPIRATION ; COMMUNITIES ; HOLOCENE
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000490577900055
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30538]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
通讯作者	Chen, Huai
作者单位	1.Southwest Univ Sci & Technol, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycle, Mianyang 621010, Sichuan, Peoples R China; 2.Chinese Acad Sci, Chengdu Inst Biol, Zoige Peatland & Global Change Res Stn, Hongyuan 624400, Peoples R China; 3.Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China; 4.Northwest A&F Univ, Coll Forestry, Lab Ecol Forecasting & Global Change, Yangling 712100, Shaanxi, Peoples R China 5.Univ Quebec Montreal, Dept Biol Sci, Ctr CEF ESCER, Montreal, PQ H3C 3P8, Canada; 6.Southwest Univ Sci & Technol, Sch Life Sci & Engn, Mianyang 621010, Sichuan, Peoples R China; 7.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu 610041, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Yang, Gang,Tian, Jianqing,Chen, Huai,et al. Peatland degradation reduces methanogens and methane emissions from surface to deep soils[J]. ECOLOGICAL INDICATORS,2019,106:105488.
APA	Yang, Gang.,Tian, Jianqing.,Chen, Huai.,Jiang, Lin.,Zhan, Wei.,...&Dong, Faqin.(2019).Peatland degradation reduces methanogens and methane emissions from surface to deep soils.ECOLOGICAL INDICATORS,106,105488.
MLA	Yang, Gang,et al."Peatland degradation reduces methanogens and methane emissions from surface to deep soils".ECOLOGICAL INDICATORS 106(2019):105488.