敦煌市近15年来生物丰度和植被覆盖指数的变化
首发时间:2009-04-01
摘要:敦煌水资源和生态环境问题已严重危及其可持续发展。由1989—2004年敦煌市土地利用类型数据,采用HJ/T192—2005中推荐的计算方法,求得敦煌市近15年来的生物丰度指数和植被覆盖指数。结果显示:近15年来,敦煌市的生物丰度指数和植被覆盖指数整体呈持续下降的趋势,生态环境持续恶化的局面并未得到有效控制。
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The Changes of Ecological Index in Dunhuang During Last 15 Years
Abstract:The problem of water resources and eco-environment in Dunhuang is very serious, and it has made threaten to its sustainable development. Using the method recommended by HJ/T192-2005, biological abundance index and vegetation cover index of Dunhuang City in the last 15 years has been obtained, based on the statistics of land use from 1989 to 2004. The results showed that: in the past 15 years, the biological abundance index and vegetation cover index of Dunhuang City keep on decreasing continuously, and the deterioration of eco-environment has not been effectively controlled.
Keywords: Dunhuang City Land use Biological abundance index Vegetation coverage index
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No.3096426522612385****
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