Assessment of Grassland Ecological Restoration Project in Xilin Gol Grassland

  • 1. Key Laboratory of Environment Change and Natural Disaster, Ministry of Education of China, College of Resource Science and Technology, Beijing Normal University, Beijing 100875, China;
    2. School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China;
    3. Key Laboratory of Resources Remote Sensing & Digital Agriculture, Ministry of Agriculture, Beijing 100081, China;
    4. Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan

Received date: 2006-11-20

  Revised date: 2007-01-15

  Online published: 2007-05-25

Supported by

Supported by Key Laboratory of Resources Remote Sensing & Digital Agriculture, the Ministry of Agriculture; The National Science Fund for Distinguished Young Scholars, No.40425008; National Natural Science Foundation of China, No. 40601010; China Postdoctoral Science Foundation, No.20060390208


Xilin Gol grassland has been experiencing severe degradation since the livestock kept on increasing in the past decades. Recent 'Grassland Ecological Restoration Project' is being developed for improvement of the degraded grassland and sustainable development. However, due to the short-time of the project implementation, it is difficult to monitor the restored area and assess the effect of the project. In this study, SPOT-VGT maximum value composite (MVC) NDVI temporal series data from 1999 to 2004 of Xilin Gol was used to model climate-vegetation response relationships in pixel scale. The model was based on the maximum NDVI in the neighborhood and their climate factors including accumulated temperature and accumulated precipitation. Then the restored areas were identified by positive trend of normalized residuals between model predicted NDVI and actual values. The result was validated by grazing pressure index (GPI), which was defined as the sheep unit divided by NPP. Negative relationship was found between the trend of residual and GPI at county level, which proved the effectiveness of the method for short-term temporal data.

Cite this article

ZHUO Li, CAO Xin, CHEN Jin, CHEN Zhongxin, SHI Peijun . Assessment of Grassland Ecological Restoration Project in Xilin Gol Grassland[J]. Acta Geographica Sinica, 2007 , 62(5) : 471 -480 . DOI: 10.11821/xb200705003


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