摘要
土地利用/覆被变化及其生态效应是生态环境演变最重要的因素之一,其研究对于促进区域生态经济协调发展有重要意义。以天山北坡土地利用/覆被数据为基础,分析了土地利用/覆被与生态系统服务功能的时空特征及其差异。结果表明:1989年到2000年研究区草地、未利用土地面积明显减少,其它类型土地面积在增加,奇台县土地利用变化动态度最高,乌鲁木齐最低;区域生态系统服务功能从1989年的31 993.31×106元增加到2000年的32 126.27×106元,增加量为132.96×106元,增长率为0.42%,其中,增长最多的是奇台县,下降最大的是玛纳斯县;山前倾斜平原圈是土地利用/覆被变化与生态系统服务功能价值变化的集中区域。天山北坡生态系统服务价值没有降低不能说明生态环境得到了良好的维护与保育,将来区域发展必须加强生态环境保护力度。
Land use / cover change and its eco-environmental effects are the key contents of regional eco-environment change and the study has great significance to regional eco-economy harmonious development. This paper aimed to provide the theory support for regional sustainable development by analyzing the ecosystem service values change in the Northern Tianshan Mountains. Based on data of land use, paper analyzed the change in land use and ecosystem service values, including the spatial heterogeneity. Results showed that the area of grassland, unused land decreased and other categories increased from 1989 to 2000. The county with the highest land use dynamic degree was Qitai County and the lowest was Urumqi City. The total ecosystem service values increased slightly, from 31 993.31×10^6 Yuan to 32 126.27×10^6 Yuan, which was mainly caused by the increase quantities, provided by cultivated land, forest land, industrial and mining land, offseted the decreased quantities, provided by grassland, water bodies, unused land. The regional total increased quantities was 132.96 ×10^6 Yuan with a 0.42% net increase. Qitai＇ s total ecosystem service values increased most among the counties in the study area and Manas County had the most decreased value. Piedmont fan was the hot spot of Land use / cover change and also ecosystem service values. The increase of total ecosystem service values did not indicate the ecosystem was protected well, which was the important factors to the establishment of regional sustainable development strategy.
出处
《干旱区地理》
CSCD
北大核心
2007年第5期728-735,共8页
Arid Land Geography
基金
国家自然科学基金重点项目(40435014)
教育部人文社会科学项目(05JD790117)联合资助
关键词
土地利用/覆被变化
生态系统服务功能
天山北坡
land use / cover change
ecosystem service values
the north of Tianshan Mountains
