Analysing the forcing mechanisms for net primary productivity changes in the Heihe River Basin, north-west China
文献类型：期刊论文
| 作者 | Lu, L.1; Li, X.1; Veroustraete, F.2; Kang, E.1; Wang, J.1 |
| 刊名 | INTERNATIONAL JOURNAL OF REMOTE SENSING
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| 出版日期 | 2009 |
| 卷号 | 30期号:3页码:793-816 |
| ISSN号 | 0143-1161 |
| DOI | 10.1080/01431160802438530 |
| 通讯作者 | Lu, L.(luling@lzb.ac.cn) |
| 英文摘要 | Most of the inland river basins in north-west China have experienced ecosystem degradation and even desertification in the last few decades. As a case study, we estimated the net primary productivity (NPP) of the Heihe river basin and analysed its difference between 2002 and 1998 by using the C-Fix, a Monteith type parametric NPP model. The data used include the normalized difference vegetation index (NDVI) derived from the 1-km SPOT/VEGETATION sensor and other environmental records. By obtaining the spatiotemporal patterns of NPP change as well as land use changes from higher resolution imagery in the basin, we identified its forcing factors in terms of climate change and human activities. We suggest that a decline in rainfall over the five years was one reason for NPP decrease in the basin. Other factors, such as irrational reclamation upstream and intensive development of irrigated farmland in the midstream play more important roles. They reinforce water competition between artificial and natural ecosystems over the whole basin. It is also found that human activities can produce very different NPP changes in a short time in mountainous regions. The NPP decreased in the east Qilian Mountains due to farmland reclamation and overgrazing but increased in the west, according to the ecosystem preserve project. |
| 收录类别 | SCI |
| WOS关键词 | RADIATION-USE EFFICIENCY ; COMPARING GLOBAL-MODELS ; SEASONAL-VARIATION ; SATELLITE ; EXCHANGE ; CLIMATE ; FOREST ; WATER ; NPP ; CO2 |
| WOS研究方向 | Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000264336100014 |
| 出版者 | TAYLOR & FRANCIS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556154 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lu, L. |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Ctr Remote Sensing & Atmospher Proc, Mol, Belgium |
| 推荐引用方式 GB/T 7714 | Lu, L.,Li, X.,Veroustraete, F.,et al. Analysing the forcing mechanisms for net primary productivity changes in the Heihe River Basin, north-west China[J]. INTERNATIONAL JOURNAL OF REMOTE SENSING,2009,30(3):793-816. |
| APA | Lu, L.,Li, X.,Veroustraete, F.,Kang, E.,&Wang, J..(2009).Analysing the forcing mechanisms for net primary productivity changes in the Heihe River Basin, north-west China.INTERNATIONAL JOURNAL OF REMOTE SENSING,30(3),793-816. |
| MLA | Lu, L.,et al."Analysing the forcing mechanisms for net primary productivity changes in the Heihe River Basin, north-west China".INTERNATIONAL JOURNAL OF REMOTE SENSING 30.3(2009):793-816. |
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来源：寒区旱区环境与工程研究所
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