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Moderate grazing has little effect on global warming potential in the temperate steppes of northern China
Hou, Longyu; Li, Yang1; Shi, Huiqiu; Tian, Dashuan2; Wang, Bingxue2; Li, Linghao; Zhang, Lihua
2018
发表期刊ATMOSPHERIC ENVIRONMENT
ISSN1352-2310
卷号190页码:342-348
摘要Grazing has been reported to significantly affect the flux of three greenhouse gases (GHGs: CO2, CH4 and N2O) in grasslands, but its effect on total global warming potential (GWP) is still unclear. To assess the effect of grazing on GWP, we simultaneously measured the flux of these three GHGs using static chambers in meadow, typical, and desert steppes under no grazing (NG) and summer grazing (SG) conditions during the 2012-14 growing seasons. We aimed to examine the impact of grazing on total GWP across different steppes and to assess the relative contribution of different environmental factors to changes in GWP. Our results showed that total GWP values were almost entirely negative in all steppe environments and displayed high spatio-temporal variability. Net ecosystem exchange was the most important predictor of total GWP in all three steppes, and the positive GWP induced by N2O emission was approximately equal to the negative GWP induced by CH4 uptake. Steppe type and sampling year-but not grazing treatment-were found to affect GWP. Air temperature and precipitation were the major factors driving total GWP change under the no grazing treatment. In contrast, soil temperature, soil moisture, and precipitation explained a significant percentage of variation in total GWP under the summer grazing treatment. Our study suggests that moderate grazing does not change the role of temperate steppe's function in mitigating climate change; however, multi-year GWP data are necessary for extrapolation to a regional scale.
关键词Greenhouse gas Global warming potential Summer grazing Temperate steppe
学科领域Environmental Sciences ; Meteorology & Atmospheric Sciences
DOI10.1016/j.atmosenv.2018.07.055
收录类别SCI
语种英语
WOS关键词GREENHOUSE-GAS FLUXES ; CARBON-DIOXIDE ; GROWING-SEASON ; CLIMATE-CHANGE ; NITROUS-OXIDE ; N2O FLUXES ; CH4 ; GRASSLAND ; CO2 ; METHANE
WOS记录号WOS:000444659400033
出版者PERGAMON-ELSEVIER SCIENCE LTD
文献子类Article
出版地OXFORD
EISSN1873-2844
资助机构National Key Research and Development Project [2016YFC0500601] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31500393]
作者邮箱llinghao@ibcas.ac.cn ; zhanglihua@ibcas.ac.cn
引用统计
被引频次:2[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/2S10CLM1/20560
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Inst Bot Shaanxi Prov, Xian Bot Garden Shaanxi Prov, Xian 710061, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
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Hou, Longyu,Li, Yang,Shi, Huiqiu,et al. Moderate grazing has little effect on global warming potential in the temperate steppes of northern China[J]. ATMOSPHERIC ENVIRONMENT,2018,190:342-348.
APA Hou, Longyu.,Li, Yang.,Shi, Huiqiu.,Tian, Dashuan.,Wang, Bingxue.,...&Zhang, Lihua.(2018).Moderate grazing has little effect on global warming potential in the temperate steppes of northern China.ATMOSPHERIC ENVIRONMENT,190,342-348.
MLA Hou, Longyu,et al."Moderate grazing has little effect on global warming potential in the temperate steppes of northern China".ATMOSPHERIC ENVIRONMENT 190(2018):342-348.
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