城市土地系统健康评价的集对分析模型

Set Pair Analysis Model of Urban Land Health Appraisal

针对土地利用系统健康程度的不确定性,基于集对分析理论,引入能够体现系统确定性和不确定性的同异反联系度计算公式,建立了城市土地健康评价的指标体系和评价模型。用熵权法确定各评价指标权重,将多指标评价表示成一个能够从总体上衡量土地健康状况的n元联系数。将该方法用于重庆市都市区2001—2011年土地利用系统健康评价。结果表明:该区域土地利用系统处于临界健康和亚健康,呈现出好转态势,但仍需进一步改善。该方法能够充分利用评价中的不确定性信息,是土地利用系统健康评价的一种有效方法。

In view of the uncertainty existing in the health appraisal of land use system, the formula for calculating the identity- discrepancy-contrary connection degree which reflects the certainty and uncertainty based on set pair analysis theory was adopted to establish the appraisal index and the model for the urban land health. Entropy weight method was employed to calculate the weight of each appraisal index which can be expressed as a n-dimensional connection degree. Health appraisal for the urban area of Chongqing city from 2001 to 2011 was taken as a case study. The results show that land health of Chongqing urban area was turning from critical health to sub-health, which was getting better but needed further improvement. The method can make full use of the uncertain information in the appraisal process, so it is effective for the health appraisal of land use system.