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Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau
Chen, Ji1,2,3; Luo, Yiqi4,5; Xia, Jianyang6,7; Zhou, Xuhui6,7; Niu, Shuli8; Shelton, Shelby9; Guo, Wei10; Liu, Suixin1,2; Dai, Wenting1,2; Cao, Junji1,2,11
2018-06-01
发表期刊LAND DEGRADATION & DEVELOPMENT
卷号29期号:6页码:1726-1737
文章类型Article
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.
关键词Ecosystem Respiration Livestock Grazing Meadow Grassland Microbial Biomass Plant Functional Types
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1002/ldr.2981
关键词[WOS]SOIL MICROBIAL COMMUNITIES ; GRAZING EXCLUSION ; GROWING-SEASON ; MEADOW GRASSLAND ; LAND-USE ; TEMPERATURE SENSITIVITY ; RANGELAND DEGRADATION ; ALPINE GRASSLANDS ; ROOT RESPIRATION ; LOESS PLATEAU
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Agriculture
WOS类目Environmental Sciences ; Soil Science
WOS记录号WOS:000435278900018
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5124
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, SKLLQG, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
2.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
3.Northwestern Polytech Univ, Key Lab Space Biosci & Biotechnol, Ctr Ecol & Environm Sci, Xian 710072, Shaanxi, Peoples R China
4.Tsinghua Univ, Dept Earth Syst Sci, Beijing 100084, Peoples R China
5.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA
6.East China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Field Observat Stn Forest Ecosyst, Shanghai 200062, Peoples R China
7.East China Normal Univ, Ctr Global Change & Ecol Forecasting, Shanghai 200062, Peoples R China
8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
9.Univ Colorado, Dept Emergency Med, Denver, CO 80045 USA
10.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian 710049, Shaanxi, Peoples R China
11.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China
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GB/T 7714
Chen, Ji,Luo, Yiqi,Xia, Jianyang,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.,Luo, Yiqi.,Xia, Jianyang.,Zhou, Xuhui.,Niu, Shuli.,...&Cao, Junji.(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.
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