Evaluation of ecological sensitivity in Karamay, Xinjiang, China

摘要: Karamay City is a typical mining city, relying on oilfield exploration and development. After 60 years of construction development, has become the first large an important base national petroleum petrochemical industry in China. Based spatial analysis, Geographic Information Systems (GIS) grid computing overlay techniques, whilst considering effect development aimed at ecological problems Xinjiang Uygur Autonomous Region China, we conducted research characteristics comprehensive sensitivity Karamay. The natural environment evolution include soil erosion, land desertification, salinization, biodiversity reduction. most significant disturbance factor from activities humans this area exploitation. This study carries out analysis single problem integrated sensitivity. results are as follows: (1) Soil erosion relatively sensitive, especially district, Dushanzi north Urho district west Baijiantan which mainly result vertical dropping slopes, serious rainfall distribution scattered woodland. (2) main types desertification represented by high moderate grade sensitivities, extremely sensitive areas distributed intersection districts. due to evaporation exceeding these areas, consists sand seldom covered vegetation. (3) salinizatiion grades moderate, high. highly southeast east district. primary causes extreme human activities. (4) light grade. Highly located south Baiyang River basin parts wetland areas. (5) Oil fields ecologically northern oilfields western northwestern dis trict central (6) moderate. southwest evaluation will provide guidance for future planning protection realization harmonious social, economic, City.