文献类型：期刊文献

英文题名：Carbon emission flux and storage in the degraded peatlands of the Zoige alpine area in the Qinghai-Tibetan Plateau

作者：Zhou, Wenchang[1,2,3] Cui, Lijuan[1,2] Wang, Yifei[1,2,4] Li, Wei[1,2] Kang, Xiaoming[1,2,4]

第一作者：Zhou, Wenchang

通信作者：Zhou, WC[1];Cui, LJ[1];Zhou, WC[2];Cui, LJ[2];Zhou, WC[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China;[3]Hubei Acad Forestry, East Lake Hightech Dev Zone, Wuhan, Peoples R China;[4]Sichuan Zoige Wetland Ecosyst Res Stn, Tibetan Autonomous Prefecture Aba, Aba, Peoples R China

年份：2021

卷号：37

期号：1

起止页码：72-82

外文期刊名：SOIL USE AND MANAGEMENT

收录：;Scopus(收录号：2-s2.0-85093503229);WOS:【SCI-EXPANDED(收录号:WOS:000583368100001)】；

基金：The National Natural Foundation of China, Grant/Award Number: 31971474; National Key Research and Development Program of China, Grant/Award Number: 2016YFC0501804; The Clean Development Mechanism of China, Grant/Award Number: 2012076

语种：英文

外文关键词：CH4 emission; CO2 emission; soil organic carbon storage; water table; Zoige alpine peatlands

摘要：The Zoige alpine peatlands cover approximately 4,605 km(2) of the Qinghai-Tibetan Plateau and are considered to constitute the largest plateau peatland on the Eurasian continent. However, the Zoige alpine peatlands are undergoing major degradation because of human activities and climate change, which would cause uncertainty in the budget of greenhouse gases (CH4 and CO2) and carbon (C) storage in global peatlands. This study simultaneously investigates the CH4 and CO2 emission fluxes and C storage at three typical sites with respect to the peatland degradation gradient: peatland, wet meadow and dry meadow. Results show that peatland degradation would increase the CO2 emission and decrease the CH4 emission. Moreover, the average C emission fluxes were 66.05, 165.78 and 326.56 mg C m(-2) hr(-1) for the peatland, wet meadow and dry meadow, respectively. The C storage of the vegetation does not considerably differ among the three sampling sites. However, when compared with the peatland (1,088.17 t C ha(-1)), the soil organic C storage decreases by 420 and 570 t C ha(-1) in case of wet and dry meadows, respectively. Although the C storage in the degraded peatlands decreases considerably, it can still represent a large capacity of C sink. Therefore, the degraded peatlands in the Zoige alpine area must be protected and restored to mitigate regional climate change.