Climate Change Dominated Long-Term Soil Carbon Losses of Inner Mongolian Grasslands
文献类型：期刊论文
| 作者 | Xin, Xiaoping4; Jin, Dongyan4,5; Ge, Yong1 ; Wang, Jianghao1; Chen, Jiquan6; Qi, Jiaguo6; Chu, Housen3; Shao, Changliang4; Murray, Philip J.2; Zhao, Ruixue5
|
| 刊名 | GLOBAL BIOGEOCHEMICAL CYCLES
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 34期号:10页码:16 |
| 关键词 | soil organic carbon resampling climatic change livestock grazing temperate steppe Inner Mongolia Plateau |
| ISSN号 | 0886-6236 |
| DOI | 10.1029/2020GB006559 |
| 通讯作者 | Tang, Huajun(tanghuajun@caas.cn) |
| 英文摘要 | Soil organic carbon (SOC) is the most critical component of global carbon cycle in grassland ecosystems. There has been growing interest in understanding SOC dynamics and driving forces of grassland biomes at various temporal and spatial scales. Up to now, estimates of long-term and large-scale changes in SOC of grassland biomes have been mostly based on modeling approaches and manipulative experiments, rather than direct measurements. During 2007-2011, we repeated 141 soil profiles of the sampling in 1963-1964 (up to 1-m depth) to quantify the long-term changes of SOC storage in the major grassland types of Inner Mongolia in order to tease apart the relative contributions of climate change and grazing. We found that SOC decreased in all soil types, except in the eolian sandy soils, from 1963 to 2007, with an average reduction rate of 1.8 kg C m(-2) (similar to 22.9% or 0.52% year(-1)) in the grassland biome of Inner Mongolia. We quantitatively clustered the soils into four groups using principal component analysis (PCA) and detected clear spatial dependency of the changes on climate and grazing. The climate change was responsible for 15.3-34.9% of the total SOC variations, whereas grazing intensity accounted for <9.5% of the changes. Our findings indicated that climate change, rather than grazing, was the primary forcing for the changes in SOC of Inner Mongolia grasslands. We presume that other driving forces, such as changes in nongrazing-resultant wind erosion and atmospheric nitrogen deposition, might have played a role albeit their effects need to be further examined. |
| WOS关键词 | ORGANIC-CARBON ; TEMPERATURE SENSITIVITY ; TERRESTRIAL ECOSYSTEMS ; STORAGE ; DYNAMICS ; MATTER ; STOCKS ; CHINA ; SEQUESTRATION ; NITROGEN |
| 资助项目 | National Key Research and Development Program of China[2016YFC0500600] ; National Key Research and Development Program of China[2017YFE0104500] ; National Natural Science Foundation of China[41771205] ; Earmarked Fund for China Agriculture Research System[CARS-34] ; Dynamics of Coupled Natural and Human Systems (CNH) Program of the NSF[1313761] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000586572100010 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Earmarked Fund for China Agriculture Research System ; Dynamics of Coupled Natural and Human Systems (CNH) Program of the NSF |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156639]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tang, Huajun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China 2.Rothamsted Res, Sustainable Soils & Grassland Syst Dept, Okehampton, England 3.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing, Peoples R China 5.Chinese Acad Agr Sci, Inst Agr Informat, Beijing, Peoples R China 6.Michigan State Univ, Dept Geog Environm & Spatial Sci, Ctr Global Change & Environm Observat, E Lansing, MI 48824 USA |
| 推荐引用方式 GB/T 7714 | Xin, Xiaoping,Jin, Dongyan,Ge, Yong,et al. Climate Change Dominated Long-Term Soil Carbon Losses of Inner Mongolian Grasslands[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2020,34(10):16. |
| APA | Xin, Xiaoping.,Jin, Dongyan.,Ge, Yong.,Wang, Jianghao.,Chen, Jiquan.,...&Tang, Huajun.(2020).Climate Change Dominated Long-Term Soil Carbon Losses of Inner Mongolian Grasslands.GLOBAL BIOGEOCHEMICAL CYCLES,34(10),16. |
| MLA | Xin, Xiaoping,et al."Climate Change Dominated Long-Term Soil Carbon Losses of Inner Mongolian Grasslands".GLOBAL BIOGEOCHEMICAL CYCLES 34.10(2020):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。