| Analysis of ecological vulnerability in Xinjiang based on its landscape pattern |
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| DOI：10.7606/j.issn.1000-7601.2009.03.48 |
| Key Words: index of landscape structure index of eco-sensitivity index of vulnerability Xinjiang |
| Author Name | Affiliation | | HUANG Ying | Xinjiang Institute of Ecology and Geography CAS, Urumqi 830011, China；Graduate University of the Chinese Academy of Sciences, Beijing 100039, China；West China Normal University Nanchong, Sichuan 637002, China | | BAO Anming | Xinjiang Institute of Ecology and Geography CAS, Urumqi 830011, China | | LIU Hailong | Xinjiang Institute of Ecology and Geography CAS, Urumqi 830011, China | | FENG Xianwei | Xinjiang Institute of Ecology and Geography CAS, Urumqi 830011, China；Graduate University of the Chinese Academy of Sciences, Beijing 100039, China | | YANG Guanghua | Xinjiang Institute of Ecology and Geography CAS, Urumqi 830011, China；Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: |
| The ecological vulnerability of Xinjiang was assessed using a combined landscape pattern and ecosystem sensitivity approach.The vulnerability indexes of landscapes and the suitability indexes of regional ecological environment are developed by using the reciprocal of fractal dimension, fragmentation, sensitivity of land desertification, sensitivity of soil salinization, and sensitivity of soil erosion.The network covering the whole study area is used to sample the spatial vulnerability of ecological environment, thus, the map of vulnerability distribution of the ecological environment is derived, and the spatial patterns of the vulnerability is analyzed.The results show that: (1) The vulnerability of various landscape types was in the following decreasing order: unused lands>farmland>grassland>forest land>construction area>water area; (2) Significantly positive relationships were found between FN, SS, SD, SE and VI, and they can reflect the eco-environment issues well; (3) There is a good agreement between the predicted and actual distribution of EVI zones.EVI value tends to decrease with the decreasing of distance from the two big deserts and increase with the increasing of altitude; (4) Water resources, climatic conditions and human activities are the dominate factors affecting the spatial pattern of the regional ecological environment vulnerability. |
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