Acta Geographica Sinica ›› 2011, Vol. 66 ›› Issue (11): 1497-1507.doi: 10.11821/xb201111006

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Evaluation of Ecological Sensitivity in Karamay, Xinjiang, Northwest China

PAN Feng1,2,3, TIAN Changyan1, SHAO Feng4, ZHOU Wei3, CHEN Fei3   

  1. 1. Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Xinjiang Consultation Center of Environmental Protection Technology, Urumqi 830011, China;
    4. Xinjiang Department of Environmental Protection, Urumqi 830063, China
  • Received:2011-07-06 Revised:2011-09-15 Online:2011-11-20 Published:2011-12-24
  • Supported by:

    Support by specialfund for public welfare industrial research of China, No.200903001; Special Funds for Central Government

Abstract: Based on spatial analysis, and GIS grid computing and overlay techniques, whilst considering the effect of oil-field development and aimed at the ecological problems of Karamay in Xinjiang, we conducted research on the spatial characteristics of the comprehensive ecological sensitivity of Karamay. The ecological problems of natural environment evolution include soil erosion, land desertification, soil salinization, biodiversity reduction. The results of the research are as follows. (1) Soil erosion is relatively sensitive, especially in Karamay District, Dushanzi District, north of Urho District and west of Baijiantan District. (2) The main types of land desertification are represented by high and moderate grade sensitivities, and high and extremely high sensitive areas are distributed in the intersection of Karamay and Baijiantan districts. (3) The soil salinization sensitivity grades are mainly moderate, high and extremely high. The highly sensitive areas are mainly southeast of Baijiantan District, north and east of Karamay District and east of Urho District. The primary causes are evaporation exceeding rainfall and excessive human activities. (4) The main types of biodiversity sensitivity are light and moderate grades. Highly sensitive areas are located in the east and south of Karamay District, north of the Baiyang River Basin and in parts of the wetland areas. (5) Oil development fields are highly ecologically sensitive areas, which are located in the northern oilfields of Urho District, western oilfields of Baijiantan District, northwestern oilfields of Karamay District and central oilfields of the Dushanzi District. (6) The main types of integrated ecological sensitivity are high and moderate. The high and extremely highly sensitive areas are located in the centre and north of Karamay District, and southwest of Baijiantan District.

Key words: ecological sensitivity, oilfield development, GIS, Karamay City, Xinjiang