The variation of net primary productivity and underlying mechanisms vary under different drought stress in Central Asia from 1990 to 2020
文献类型：期刊论文
| 作者 | Li, Saibo1,3; He, Shaoyang2,3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 314页码:15 |
| 关键词 | Net primary productivity (NPP) Spatiotemporal variation Driving mechanism Drought stress Central Asia |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2021.108767 |
| 通讯作者 | He, Shaoyang(hesy.18s@igsnrr.ac.cn) |
| 英文摘要 | The variation in net primary productivity (NPP) and its controlling factors are crucial for understanding the mechanisms that maintain terrestrial ecosystem under ongoing climate and land cover change. However, such knowledge is still deficient in Central Asia where vegetation may be subjected to different drought stress. To achieve this goal, our study quantitatively explored the NPP variations and the mechanisms under different drought stress in Central Asia from 1990 to 2020 using Google Earth Engine with the Landsat datasets and environmental data. And a new method was introduced using NPP model to distinguish climate NPP (CNPP), and land cover NPP (LCNPP), affected by climate change, and land cover change, respectively. The results showed that vegetation productivity exhibited an increasing trend from 1990 to 2020, with the value of 473.61 Tg C and 522 Tg C in 1990 and 2020, respectively. The NPP in semi-arid, and dry sub-humid zones respectively increased by 12.94% and 33.78%, while NPP change in arid zones was not significant. The CNPP and LCNPP in Central Asia were -2.84x10(3) t C and 102.4x10(3) t C, respectively. In particular, land cover change significantly accumulated terrestrial productivity in the semi-arid zones, with the value of 66.44x10(3) t C. Climate conditions in arid and dry sub-humid zones respectively contributed 1.85x10(3) t C and 0.7x10(3) t C, but led to a decrease of 5.39x10(3) t C in dry sub-humid zones. NPP change in Central Asia was more sensitive to precipitation (R=0.72) than to temperature (R=-0.06) and solar radiation (R=-0.44). Additionally, the major limiting conditions in arid, and semi-arid zones both were precipitation, while the temperature was the key factor for vegetation growth in dry sub-humid ecosystems. In general, the impact of land cover change on vegetation productivity was higher than that of climate variations in Central Asia between 1990 and 2020. |
| WOS关键词 | 3-RIVER SOURCE REGION ; LAND-COVER CHANGE ; CLIMATE-CHANGE ; QUANTITATIVE ASSESSMENT ; STOMATAL CONDUCTANCE ; VEGETATION CHANGES ; RELATIVE ROLES ; CHINA ; DESERTIFICATION ; IMPACTS |
| 资助项目 | Chinese Academy of Sciences[XDA20030203] ; National Natural Science Foundation of China[41930647] ; Innovation Project of State Key Laboratory of Resources and Environmental Information System[O88RA600YA] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000913336100001 |
| 出版者 | ELSEVIER |
| 资助机构 | Chinese Academy of Sciences ; National Natural Science Foundation of China ; Innovation Project of State Key Laboratory of Resources and Environmental Information System |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189287]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | He, Shaoyang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Saibo,He, Shaoyang. The variation of net primary productivity and underlying mechanisms vary under different drought stress in Central Asia from 1990 to 2020[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,314:15. |
| APA | Li, Saibo,&He, Shaoyang.(2022).The variation of net primary productivity and underlying mechanisms vary under different drought stress in Central Asia from 1990 to 2020.AGRICULTURAL AND FOREST METEOROLOGY,314,15. |
| MLA | Li, Saibo,et al."The variation of net primary productivity and underlying mechanisms vary under different drought stress in Central Asia from 1990 to 2020".AGRICULTURAL AND FOREST METEOROLOGY 314(2022):15. |
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。