气候变化领域集成服务门户(CCPortal): The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau

CCPortal

DOI	10.1038/s41598-018-22468-6
	The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau
	Liu, Wenjie; Chen, Shengyun; Liang, Junyi; Qin, Xiang; Kang, Shichang; Ren, Jiawen; Qin, Dahe
发表日期	2018
ISSN	2045-2322
卷号	8
英文摘要	The objective of this study is to investigate the effect of decreased permafrost stability on carbon storage of the alpine ecosystems in the northeastern margin of the Qinghai-Tibet Plateau. During July and August 2013, we selected 18 sites in five types of permafrost (stable, substable, transitional, unstable, and extremely unstable) regions. We measured aboveground phytomass carbon (APC) and soil respiration (SR), soil inorganic carbon (SIC), soil organic carbon (SOC), belowground phytomass carbon, and soil properties down to 50 cm at same types of soils and grasslands. The results indicated that ecosystem carbon in cold calcic soils first decreased and then increased as the permafrost stability declined. Overall, decreasing permafrost stability was expected to reduce ecosystem carbon in meadows, but it was not obvious in swamp meadows and steppes. APC decreased significantly, but SIC and SOC in steppes first decreased and then increased with declining permafrost stability. Soil clay fraction and soil moisture were the controls for site variations of ecosystem carbon. The spatial variations in SR were possibly controlled by soil moisture and precipitation. This meant that alpine ecosystems carbon reduction was strongly affected by permafrost degradation in meadows, but the effects were complex in swamp meadows and steppes.
学科领域	Science & Technology - Other Topics
语种	英语
WOS研究方向	Multidisciplinary Sciences
来源期刊	SCIENTIFIC REPORTS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111962
作者单位	Hainan Univ, Inst Trop Agr & Forestry, Haikou 570228, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wenjie,Chen, Shengyun,Liang, Junyi,et al. The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2018,8.
APA	Liu, Wenjie.,Chen, Shengyun.,Liang, Junyi.,Qin, Xiang.,Kang, Shichang.,...&Qin, Dahe.(2018).The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau.SCIENTIFIC REPORTS,8.
MLA	Liu, Wenjie,et al."The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau".SCIENTIFIC REPORTS 8(2018).