Alpine wetland degradation reduces carbon sequestration in the Zoige Plateau, China

doi:10.3389/fevo.2022.980441

	Alpine wetland degradation reduces carbon sequestration in the Zoige Plateau, China
	Yang, Ao 1,2; Kang, Xiaoming 1,2; Li, Yong 1,2; Zhang, Xiaodong 1,2; Zhang, Kerou 1,2; Kang, Enze 3,4; Yan, Zhongqing 1,2; Li, Meng 1,2; Wang, Xiaodong 1,2; Niu, Yuechuan 5; Yan, Liang 1,2
	2022
发表期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN	2296-701X
卷号	10
摘要	Alpine wetland plays an important role in the global carbon balance but are experiencing severe degradation under climate change and human activities. With the aim to clarify the effect of alpine wetland degradation on carbon fluxes (including net ecosystem CO2 exchange, NEE; ecosystem respiration, ER; gross ecosystem productivity, GEP, and CH4 flux), we investigated 12 sites and measured carbon fluxes using the static chamber method in the Zoige alpine wetland during August 2018, including undegraded wetland (UD), lightly degraded wetland (LD), moderately degraded wetland (MD), and severely degraded wetland (SD). The results showed that carbon sink strengths differ among the Zoige wetlands with different degradation stages during the growing season. From UD to LD, the rate of carbon sequestration (mean value of NEE) increased by 25.70%; however, from LD to SD, it decreased by 81.67%. Wetland degradation significantly reduced soil water content (SWC), soil organic carbon (SOC), microbial biomass carbon (MBC), and microbial biomass nitrogen (MBN). NEE was significantly correlated with MBC and MBN, while ER was positively correlated with ST but negatively correlated with SOC (P < 0.01). Among all measured environmental factors, GEP was positively correlated with pH (P < 0.01), while CH4 flux was most closely correlated with SOC, SWC, MBC, MBN, and ST (P < 0.001), and was also affected by pH and NO3- content (P < 0.01). These results suggest that the capacity of carbon sequestration in the Zoige wetlands reduced with intensification of the degradation. This study provides a reference for sustainably managing and utilizing degraded wetlands under climate change.
关键词	degradation carbon sequestration CH4 flux environmental factors alpine wetland
学科领域	Ecology
DOI	10.3389/fevo.2022.980441
收录类别	SCI
语种	英语
WOS关键词	SOIL ORGANIC-CARBON ; QINGHAI-TIBETAN PLATEAU ; METHANE EMISSIONS ; MEADOW ; RESPIRATION ; EXCHANGE ; TEMPERATURE ; VEGETATION ; MOISTURE ; STEPPE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000847327700001
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	Fundamental Research Funds of CAF ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; [CAFYBB2019QB009] ; [32171597] ; [32171598] ; [42041005] ; [2019 QZKK0304]
作者邮箱	yanliang@caf.ac.cn
作品OA属性	gold
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29016
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Forestry, Inst Ecol Conservat & Restorat, Wetland Res Ctr, Beijing, Peoples R China 2.Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China 3.Sichuan Zoige Wetland Ecosyst Res Stn, Aba, Sichuan, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 6.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ao,Kang, Xiaoming,Li, Yong,et al. Alpine wetland degradation reduces carbon sequestration in the Zoige Plateau, China[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2022,10.
APA	Yang, Ao.,Kang, Xiaoming.,Li, Yong.,Zhang, Xiaodong.,Zhang, Kerou.,...&Yan, Liang.(2022).Alpine wetland degradation reduces carbon sequestration in the Zoige Plateau, China.FRONTIERS IN ECOLOGY AND EVOLUTION,10.
MLA	Yang, Ao,et al."Alpine wetland degradation reduces carbon sequestration in the Zoige Plateau, China".FRONTIERS IN ECOLOGY AND EVOLUTION 10(2022).

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