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中国沙漠 ›› 2010, Vol. 30 ›› Issue (4): 870-877.

• 生物土壤与生态 • 上一篇    下一篇

基于生态服务价值的伊犁河谷土地利用变化环境影响评价

陈忠升, 陈亚宁*, 李卫红, 陈亚鹏   

  1. 中国科学院 新疆生态与地理研究所/中国科学院 绿洲生态与荒漠环境重点实验室, 新疆 乌鲁木齐 830011
  • 收稿日期:2009-09-27 修回日期:2009-11-16 出版日期:2010-07-20 发布日期:2010-07-20

Evaluating Effect of Land Use Change on Environment in Ili Valley based on Ecosystem Service Value Analysis

CHEN Zhong-sheng, CHEN Ya-ning, LI Wei-hong, CHEN Ya-peng   

  1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences/Key Laboratory for Oasis Ecology and Desert Environment, Chinese Academy of Sciences, Urumqi 830011, China
  • Received:2009-09-27 Revised:2009-11-16 Online:2010-07-20 Published:2010-07-20

摘要: 运用遥感技术、GIS和实地调查方法,对新疆伊犁河谷1985—2005年间的土地利用变化进行了分析,同时借助土地利用变化驱动下的生态服务价值变化量,探讨了研究区土地利用变化对生态环境的影响及效应。结果表明,1985—2005年,研究区耕地、水域和建设用地面积增加,林地、草地和未利用地面积减少,其中耕地和草地面积变化最大,分别为31.53万 hm2和-29.02万hm2。土地利用变化引起了研究区生态环境的变化,对生态服务价值亦产生了一定的影响,伊犁河谷生态服务功能整体提高了4.43%,其中正向变化最大的特克斯县,其生态服务功能增加了7.57%,负向变化最大的是伊宁市,其生态服务功能下降了27.33%;各单项服务功能价值中,生态系统所提供的气体调节、土壤形成与保护、生物多样性保护和原材料等4项生态服务功能有所下降,其余8项生态服务功能均有不同程度的提高。敏感度分析表明,赋予生态服务功能价值指数的大小对研究区总的生态服务价值变化影响不明显,研究结果可信。

关键词: 土地利用变化, 生态服务价值, 环境影响评价, 伊犁河谷

Abstract: The land use change of Ili Valley in Xinjiang from 1985 to 2005 was studied in this paper based on RS data, field survey and GIS analysis. Furthermore, the effect of land use change on ecological environment was analyzed from calculating the change of ecosystem service value as a result of land use change. The results showed that the areas of the cultivated land, water area and construction land increased from 1985 to 2005, and the areas of forest land, meadow and unused land decreased during the period. The change of the cultivated land area and meadow area were more remarkable, at 31.53×104 hm2 increase and 29.02×104 hm2 decrease respectively. Land use change led to the change of ecological environment in the research area and influenced the ecosystem service value to some degree. The gross ecosystem service value in Ili valley increased 4.43% during the 20 years. The gross ecosystem service value increased most quickly in Tekesi county, which was 7.57%, while it decreased most quickly in Yining city, which was 27.33%. Besides, the value changes of 12 types of ecosystem services were analyzed. The ecosystem service functions of gas regulation, soil formation and protection, biodiversity protection and raw material provided by the ecosystem all decreased; whereas that of climate regulation, interfering regulation, source conservation, waste disposal, nutrient circulation, biological control, food supply, and amusement culture all increased. The sensitive coefficient analysis of the ecosystem service value also indicated that the adjustment of ecosystem service value indices of land use types had little effect on the gross ecosystem service value, so the results were credible.

Key words: land use change, ecosystem service value, environmental impact assessment, Ili Valley

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