Heavy grazing reduces grassland soil greenhouse gas fluxes: A global meta-analysis
文献类型：期刊论文
| 作者 | Tang, Shiming1,2; Wang, Kun3; Xiang, Yangzhou4; Tian, Dashuan1; Wang, Jinsong1; Liu, Yanshu5; Cao, Bo6; Guo, Ding7; Niu, Shuli1,8 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 654页码:1218-1224 |
| 关键词 | Grazing Grassland Soil respiration Methane uptake Nitrous oxide Meta-analysis |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2018.11.082 |
| 通讯作者 | Tian, Dashuan(tiands@igsnrr.ac.cn) ; Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Grazing degrades worldwide grasslands and possibly suppresses soil greenhouse gas (GHG: CO2, CH4 and N2O) fluxes. However, the global patterns of these three gas fluxes in response to grazing and the general mechanisms remain poorly understood. Here, we performed a meta-analysis of 63 independent grazing studies that measured soil GHG fluxes across global grasslands. Our results revealed that light and moderate grazing had no significant effect on soil CH4 uptake, N2O and CO2 emission, but heavy grazing consistently reduced them. The magnitudes of their responses to grazing were regulated by grazing duration and precipitation. In comparison with CO2 emission, soil CH4 uptake and N2O emission were reduced much more under heavier grazing, longer grazing duration or less precipitation. The decrease in soil CO2 emission was possibly caused by grazing-induced reduction in root biomass and soil moisture, while the decline in soil CH4 uptake and N2O emission was due to decreased soil moisture and substrate availability. Overall, this study provides the first large-scale evaluation on three main soil GHG fluxes in response to grazing, highlighting grazing inhibition of GHG emission but at the cost of plant productivity and soil fertility. We call for future efforts to identify an appropriate grazing intensity that is optimal to balance these complicated impacts. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS关键词 | CARBON SEQUESTRATION ; NITROUS-OXIDE ; PLANT DIVERSITY ; STOCKING RATES ; TYPICAL STEPPE ; ECOSYSTEM ; INTENSITY ; COMMUNITY ; RESPONSES ; METHANE |
| 资助项目 | State Key Laboratory of Grassland Agro-ecosystems (Lanzhou University) ; National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31470528] ; National Key R&D Program of China[2016YFC0501802] ; Ministry of Science and Technology of the People's Republic of China[2016YFC0501803] ; Thousand Youth Talents Plan |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000458630100113 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | State Key Laboratory of Grassland Agro-ecosystems (Lanzhou University) ; National Natural Science Foundation of China ; National Key R&D Program of China ; Ministry of Science and Technology of the People's Republic of China ; Thousand Youth Talents Plan |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/49469]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tian, Dashuan; Niu, Shuli |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Inner Mongolia Univ, Sch Ecol & Environm, Dept Ecol, 235 West Coll Rd, Hohhot 010021, Peoples R China 3.China Agr Univ, Grassland Dept Anim Sci & Technol Coll, Beijing 100193, Peoples R China 4.Guizhou Inst Forest Inventory & Planning, Guiyang 550003, Guizhou, Peoples R China 5.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China 6.Orient Landscape Arts Beijing Co, Inst Ecol Planning & Design, Beijing 100015, Peoples R China 7.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China 8.Univ Chinese Acad Sci, Dept Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Shiming,Wang, Kun,Xiang, Yangzhou,et al. Heavy grazing reduces grassland soil greenhouse gas fluxes: A global meta-analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,654:1218-1224. |
| APA | Tang, Shiming.,Wang, Kun.,Xiang, Yangzhou.,Tian, Dashuan.,Wang, Jinsong.,...&Niu, Shuli.(2019).Heavy grazing reduces grassland soil greenhouse gas fluxes: A global meta-analysis.SCIENCE OF THE TOTAL ENVIRONMENT,654,1218-1224. |
| MLA | Tang, Shiming,et al."Heavy grazing reduces grassland soil greenhouse gas fluxes: A global meta-analysis".SCIENCE OF THE TOTAL ENVIRONMENT 654(2019):1218-1224. |
入库方式： OAI收割
来源：地理科学与资源研究所
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