中国农业科学 ›› 2006, Vol. 39 ›› Issue (12): 2538-2544 .

• 土壤肥料·节水灌溉 • 上一篇    下一篇

陕北黄土高原土地利用生态服务价值时空研究

李晶,任志远   

  1. 陕西师范大学旅游与环境学院
  • 收稿日期:2006-05-15 修回日期:1900-01-01 出版日期:2006-12-10 发布日期:2006-12-10
  • 通讯作者: 李晶

The spatial analysis of landuse ecological services value in loess plateau in northern Shaanxi pronvice

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  1. 陕西师范大学旅游与环境学院
  • Received:2006-05-15 Revised:1900-01-01 Online:2006-12-10 Published:2006-12-10

摘要: 【目的】为了定量的建立区域绿色生态经济账户,为区域土地的持续利用与生态环境和社会经济协调发展提供科学决策依据。【方法】以中国陕北黄土高原作为研究对象,通过野外实地调查与测定,利用遥感和地理信息系统手段与多元统计分析等方法,从分析区域现状主要生态过程入手,研究了区域的土地利用覆盖及其格局变化,以及生态服务功能及价值的时空分布。【结果】1978年1990年和2000年陕北黄土高原生态系统服务价值分别为467.23亿元、577.03亿元和560.99亿元。从1978年至1990年陕北黄土高原的生态价值增加了19.03%,而1990年至2000年陕北黄土高原的生态价值减少了2.86%,但是在22年来陕北黄土高原的生态价值增加了16.71%。【结论】陕北黄土高原生态系统服务功能价值在空间分布上存在一定的差异。从大的区域来讲,1978年到2000年陕北黄土高原生态系统服务价值是在缓慢增加,并且陕北黄土高原生态系统服务价值的增加主要在南部,北部变化不大。但是值得注意的是虽然大趋势是缓慢增加,但是局部地区生态系统服务价值的减少却很剧烈,而且,陕北黄土高原1990年至2000年生态服务价值总体上是在减少。生态环境改善的情况存在区域分布差异,南部改善面积较大但是北部地区改善缓慢。

关键词: 陕北黄土高原, 生态服务价值, 土地利用, 时空分析

Abstract: The paper studied on comprehensive appraisal of dynamic change of the ecosystem service function value in loess plateau in northern Shaanxi province using 3S technologies. The results showed : the ecological services value in loess plateau in northern Shaanxi province was 46.723 billion yuan in 1978, the ecological services value in 1990 was 57.703 billion yuan, and the ecological services value in 2000 was 56.099 billion yuan. From 1978 to 1990 , the ecological services value rise by 19.03%, and from 1990 to 2000 drooped by 2.86%, but in the entire 22 years ecological value in northern Shaanxi province increased by 16.71%. Ecosystem services in loess plateau in northern Shaanxi province have the spatial distribution: on large regional terms, from 1978 to 2000, ecosystem services value in northern Shaanxi province slowly increase, and its increasing mainly in the south ,but in the north changed little. But it is noteworthy that although the general trend is slowly increasing, but the reducing of the ecosystem services value in local area was very keen. From 1990 to 2000 ecosystem services value in northern Shaanxi province is declining. Improvement of the ecological environment was regional disparity, but the northern region improved larger and the southern region improve slowly.

Key words: Ecological services value, loess plateau, spatial analysis, landuse