Satellite Observed Land Surface Greening in Summer Controlled by the Precipitation Frequency Rather Than Its Total Over Tibetan Plateau
文献类型：期刊论文
| 作者 | Liu, Ying2,4,5; Wu, Chaoyang4,5; Jassal, Rachhpal S.1; Wang, Xiaoyue4,5; Shang, Rong3 |
| 刊名 | EARTHS FUTURE
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 10期号:8页码:16 |
| 关键词 | climate change peak vegetation growth precipitation remote sensing NDVI |
| DOI | 10.1029/2022EF002760 |
| 通讯作者 | Wu, Chaoyang(wucy@igsnrr.ac.cn) |
| 英文摘要 | Land surface greening has substantially changed the carbon sequestration and hydrological processes over Tibetan Plateau (TP). Previous studies have revealed that the increased total precipitation (P-total) is the main driver of the enhanced peak growth in TP. However, the role of precipitation pattern, especially the frequency of precipitation (P-freq, number of rainy days [>0.1 mm]), has not been well analyzed. We used time series of satellite-derived Normalized Difference Vegetation Index (NDVI) to investigate the effect of P-freq in controlling the peak growth (the maximum of the NDVI [NDVImax]) of different vegetation types in TP for the period of 1982-2015. We found that the widespread greening trend with P-total disappeared when P-freq was introduced as a controlling variable, and that P-freq alone contributed more than P-total to the increase of NDVImax. The underlying mechanism for the higher contribution of P-freq than P-total to NDVImax is that increased P-freq significantly improved soil moisture, reduced daytime temperature while increased nighttime temperature, thereby alleviating summer drought. Our results highlight the importance of P-freq in interpreting the variation of peak growth, and these effects might be better represented in ecosystem models by considering P-freq rather than P-total alone with future climate change. |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; NET PRIMARY PRODUCTIVITY ; INTERANNUAL VARIABILITY ; VEGETATION GROWTH ; CLIMATE-CHANGE ; CARBON UPTAKE ; EXTREME PRECIPITATION ; RAINFALL VARIABILITY ; PLANT PHENOLOGY ; NORTH-AMERICA |
| 资助项目 | National Key R&D program of China[2018YFA0606101] ; National Natural Science Foundation of China[42125101] ; National Natural Science Foundation of China[41901359] ; CAS Interdisciplinary Innovation Team[JCTD-2020-05] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000843050700001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key R&D program of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/166534]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wu, Chaoyang |
| 作者单位 | 1.Univ British Columbia, Vancouver, BC, Canada 2.Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing, Peoples R China 3.Fujian Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ying,Wu, Chaoyang,Jassal, Rachhpal S.,et al. Satellite Observed Land Surface Greening in Summer Controlled by the Precipitation Frequency Rather Than Its Total Over Tibetan Plateau[J]. EARTHS FUTURE,2022,10(8):16. |
| APA | Liu, Ying,Wu, Chaoyang,Jassal, Rachhpal S.,Wang, Xiaoyue,&Shang, Rong.(2022).Satellite Observed Land Surface Greening in Summer Controlled by the Precipitation Frequency Rather Than Its Total Over Tibetan Plateau.EARTHS FUTURE,10(8),16. |
| MLA | Liu, Ying,et al."Satellite Observed Land Surface Greening in Summer Controlled by the Precipitation Frequency Rather Than Its Total Over Tibetan Plateau".EARTHS FUTURE 10.8(2022):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。