Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau

doi:10.1002/ldr.2981

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau
	Chen, Ji 2,3,4; Cao, Junji 2,3,8; Dai, Wenting 2,3; Liu, Suixin 2,3; Guo, Wei 9; Shelton, Shelby 10; Niu, Shuli 11; Zhou, Xuhui 5,6; Xia, Jianyang 5,6; Luo, Yiqi 1,7
刊名	LAND DEGRADATION & DEVELOPMENT
	2018-06-01
卷号	29 期号:6 页码:1726-1737
关键词	Ecosystem Respiration Livestock Grazing Meadow Grassland Microbial Biomass Plant Functional Types
DOI	10.1002/ldr.2981
文献子类	Article
英文摘要	Grazing exclusion (GE) is an effective method for protecting degraded grasslands, and it can profoundly affect ecosystem carbon (C) cycles. Ecosystem respiration (ER), which includes both autotrophic and heterotrophic respiration (HR), accounts for the largest land-to-atmosphere C fluxes. How ER responds to GE is still unclear, however, and to investigate this, a controlled GE experiment was conducted at a meadow grassland near Qinghai Lake, China. Animal exclusion enhanced ER and aboveground plant respiration (R-agb) by 10.5% and 40.1%, respectively, but it suppressed soil respiration by 12.4% and HR by 17.6%. Positive responses of ER and R-agb were linked to increased aboveground biomass, particularly graminoids biomass. Negative responses of soil respiration and HR were associated with GE-induced changes in microbial biomass C and nitrogen. These results show that grassland responded in complex ways to GE and that ER and its components were regulated by both abiotic and biotic factors. Moreover, the divergent responses of respiration components have important implications for models of terrestrial C cycles and climate under enhanced human activities and changes in land use.
WOS关键词	SOIL MICROBIAL COMMUNITIES ; GRAZING EXCLUSION ; GROWING-SEASON ; MEADOW GRASSLAND ; LAND-USE ; TEMPERATURE SENSITIVITY ; RANGELAND DEGRADATION ; ALPINE GRASSLANDS ; ROOT RESPIRATION ; LOESS PLATEAU
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
WOS记录号	WOS:000435278900018
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5124]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA 2.Chinese Acad Sci, SKLLQG, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 4.Northwestern Polytech Univ, Key Lab Space Biosci & Biotechnol, Ctr Ecol & Environm Sci, Xian 710072, Shaanxi, Peoples R China 5.East China Normal Univ, Ctr Global Change & Ecol Forecasting, Shanghai 200062, Peoples R China 6.East China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Field Observat Stn Forest Ecosyst, Shanghai 200062, Peoples R China 7.Tsinghua Univ, Dept Earth Syst Sci, Beijing 100084, Peoples R China 8.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China 9.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian 710049, Shaanxi, Peoples R China 10.Univ Colorado, Dept Emergency Med, Denver, CO 80045 USA
推荐引用方式 GB/T 7714	Chen, Ji,Cao, Junji,Dai, Wenting,et al. Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(6):1726-1737.
APA	Chen, Ji.,Cao, Junji.,Dai, Wenting.,Liu, Suixin.,Guo, Wei.,...&Luo, Yiqi.(2018).Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau.LAND DEGRADATION & DEVELOPMENT,29(6),1726-1737.
MLA	Chen, Ji,et al."Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau".LAND DEGRADATION & DEVELOPMENT 29.6(2018):1726-1737.