摘要
将土地利用和自然环境作为两个系统,选择一些可以用一定指标度量的有代表性的系统要素,并按一定标准将它们分作3类,分别称它们处于a,b,c状态;再通过对系统中处于不同状态的要素数量的比较,决定系统所处状态,然后赋予一定值,得到系统的"态势度";经对土地利用系统和自然环境系统的态势度进行函数运算,可获"协调度".以态势度和协调度为工具,便可评价土地利用是否与自然环境保持协调及协调达到的程度.用此方法对通州市的评价表明,在当前缺乏有效手段的情况下,该法不失为一种可用之法.
In order to evaluate the coordination degree of two systems, land use system and natural environment system, the key procedures are involved as following. Firstly, a number of representative factors that can be easily measured by specific index are chosen. Secondly,each factor index is divided into three classifications, named ideal, ordinary and defect, based on a certain criterion. According to the classifications that factors fall into, the factor situation of a, b or c can be determined, respectively. Thirdly, by comparing the factor numbers belonging to a,b or c, the system situation,which is named the situation degree of system, is determined and is given a certain value. Finally, a function that can be connected the situation degree of land use system with that of natural environ- ment system is designed and the function value is named the coordination degree. By means of the situation degree of system and the coordination degree, whether or not keep coordinative development and the degree of coordination between land use and natural environment can be evaluated. The method presented by the paper is used to evaluate the coordination degree between land use and natural environment in Tongzhou town. The results of evaluation indicate that the method can be regarded as a useful tool because of being short of the effective means at present.
出处
《河南科学》
2009年第2期226-229,共4页
Henan Science
基金
国家自然科学基金(40771186)
江苏省自然科学基金(BK2008277)
关键词
态势度
协调度
土地利用
自然环境
通州
situation degree
coordination degree
land use
natural environment
Tongzhou
