Mismatches between vegetation greening and primary productivity trends in South Asia-A satellite evidence
文献类型：期刊论文
| 作者 | Sarmah, Sangeeta3; Singha, Mrinal4; Wang, Jinsong3; Dong, Jinwei4; Burman, Pramit Kumar Deb2,7; Goswami, Santonu5; Ge, Yong6; Ilyas, Sana1; Niu, Shuli3 |
| 刊名 | INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
 |
| 出版日期 | 2021-12-15 |
| 卷号 | 104页码:12 |
| 关键词 | GPP LAI Greening Anthropogenic disturbance Climate change South Asia |
| ISSN号 | 1569-8432 |
| DOI | 10.1016/j.jag.2021.102561 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Vegetation greening contributes to gross carbon sequestration by plants and thus plays a vital role in mitigation of global warming. Terrestrial vegetation has a significant greening trend in South Asia (SA); however, it remains elusive how this greening translates to gross primary production (GPP) (proxy of gross carbon uptake by plants at ecosystem scale) in SA. In this study, we investigated the spatiotemporal dynamics of GPP in correspondence to leaf area increase (based on leaf area index as proxy of greening) over SA using remote sensing driven data on Google Earth Engine (GEE) cloud computation, during 2003-2017. We found a much weaker increase of GPP in SA as compared to the overall greening trend, primarily attributed to the disturbance in cropland activities of the region. Especially, greening was highly significant (p 0.05) over the most irrigated and fertile Indo-Gangetic Plain (IGP) of SA, however GPP trend was non-significant (p 0.05) over this region. Further, natural vegetation areas also showed low vegetation greening and GPP increase during the study period. The analysis of the potential drivers revealed that both climatic and anthropogenic stresses (intensive cropping, population pressure) had a negative impact on the regional GPP, especially in IGP. Our study indicated that the overwhelming greening of SA because of enhanced cropland activities, did not contribute much to GPP over the region. The restricted cropland canopy carbon uptake and low GPP increase in forests led to a lower than expected increase of gross carbon assimilation over SA in the context of climate changes and anthropogenic disturbances. Our study inferred that effective reforestation programs and conservation of natural vegetation areas are essential in SA for efficient vegetation carbon assimilation. |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; INDO-GANGETIC PLAIN ; CHINA ; NDVI ; GPP ; VARIABILITY ; PATTERNS ; DROUGHT ; MODELS ; NPP |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA 20030302] ; National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; international Collaboration Program of Chinese Academy of Sciences[131A11KYSB20180010] |
| WOS研究方向 | Remote Sensing |
| 语种 | 英语 |
| WOS记录号 | WOS:000704804300003 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; international Collaboration Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/166842]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Tashkent Inst Irrigat & Agr Mechanizat Engineers, Dept Ecol & Water Resources Management, Tashkent, Uzbekistan 2.Indian Inst Trop Meteorol, Minist Earth Sci, Pune, Maharashtra, India 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modelling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 5.Indian Space Res Org, Natl Remote Sensing Ctr, Earth & Climate Sci Area, Hyderabad, India 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China 7.Savitribai Phule Pune Univ, Dept Atmospher & Space Sci, Pune, Maharashtra, India |
| 推荐引用方式 GB/T 7714 | Sarmah, Sangeeta,Singha, Mrinal,Wang, Jinsong,et al. Mismatches between vegetation greening and primary productivity trends in South Asia-A satellite evidence[J]. INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,2021,104:12. |
| APA | Sarmah, Sangeeta.,Singha, Mrinal.,Wang, Jinsong.,Dong, Jinwei.,Burman, Pramit Kumar Deb.,...&Niu, Shuli.(2021).Mismatches between vegetation greening and primary productivity trends in South Asia-A satellite evidence.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,104,12. |
| MLA | Sarmah, Sangeeta,et al."Mismatches between vegetation greening and primary productivity trends in South Asia-A satellite evidence".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 104(2021):12. |
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。