地理科学 ›› 2016, Vol. 36 ›› Issue (3): 367-374.doi: 10.13249/j.cnki.sgs.2016.03.007

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土地集约利用评价中适度指标标准化方法改进研究——以人口密度指标为例

郭欢欢1,2(), 张孝成1,2, 李仕川3   

  1. 1. 重庆市国土资源和房屋勘测规划院, 重庆 400020
    2. 重庆市土地利用与遥感监测工程技术研究中心, 重庆 400020
    3. 重庆市国土资源和房屋管理局, 重庆 400015
  • 收稿日期:2014-11-16 修回日期:2015-02-05 出版日期:2016-03-20 发布日期:2016-03-20
  • 作者简介:

    郭欢欢(1983-),男,河南安阳人,高级工程师,博士,主要研究方向为土地政策、土地利用。E-mail:guohuan2009@126.com

  • 基金资助:
    2013年度国土资源部公益性行业专项(201311006)资助

Improvement of the Method to Standardize Moderate Indicators in the Evaluation of Intensive Land Use: Population Density as an Example

Huanhuan Guo1,2(), Xiaocheng Zhang1,2, Shichuan Li3   

  1. 1. Chongqing Land Resources and Housing Surveying and Planning Institute, Chongqing 400020, China
    2. Chongqing Land Use and Remote Sensing Engineering Research Center, Chongqing 400020, China
    3. Bureau of Land Resources and Housing Management of Chongqing, Chongqing 400015, China
  • Received:2014-11-16 Revised:2015-02-05 Online:2016-03-20 Published:2016-03-20
  • Supported by:
    Non-profit Industry Financial Program of Ministry of Land and Resources of China (201311006)

摘要:

基于极值标准化等传统方法开展的土地集约利用多因素综合评价中,评价因子与评价结果为线性相关关系难以妥善处理适度指标,以边际效用递减规律为理论基础,在分析适度指标标准化建模需求基础上,构建了基于二次函数的标准化处理方法,并以重庆市人口密度指标为例开展了实证研究。研究表明:适度指标对评价值的贡献符合边际效用递减规律;基于二次函数的标准化方法解决了适度指标在不同区间作用方向不同的需求;实证研究表明,改进方法较传统方法评价结论更符合实际,政策启示更符合重庆市五大功能区战略中的人口调控策略。

关键词: 适度指标, 土地集约利用, 指标标准化, 人口密度

Abstract:

Multi-factor comprehensive evaluation is widely used to assess intensive land use, and positive and/or negative indicators are usually employed in the evaluations. In practice, moderate indicators are exiting, which have positive effects on intensive land use within a certain value range, and negative effects when exceed the range, such as urban comprehensive volume rate, building density and population density. Moderate indicators pose a challenge to traditional multi-factor comprehensive evaluation method because the traditional method to standardize the indicators is based on a linear relationship between the original indicator values and standardization results. In this article, we propose an improved indicator standardization method based on the law of diminishing returns. This method supposes the land user as a consumer, the indicator standardization value Fi as utility and the indicator value xi as consumption unit. Consequently, the contribution of moderate indicator to the assessment results of intensive land use follows the law of diminishing returns. The model to simulate the standardized values of moderate indicators should meet three criterion: when xx0,f(x)’≥0;when xx0, f(x)’≤0;f(x) is a second-order continuous and f(0)=0. Based on quadratic equation, we proposed a standardization formula: Fi=axi2+bxi. This formula meets the three criterion, and the parameters a and b can be calculated by indicator ideal value x0 and coordinate origin [0, 0]. Thereafter, a new multi-factor comprehensive model to evaluate intensive land use was built. This model combines the standardized moderate indicators derived from the improved method and the linear indicators calculated by the traditional method. Then, the population density of Chongqing was used to test and compare the improved and the traditional methods. The results show: 1) the population density of the metropolitan economic circle is greater than the ideal value 0.74×104/km2, and the weight of this indicator is 0.147 6. Moreover, the contribution score of population density in the intensive land use of this areas is 14.76. 2) The formula of the improved model is Fi=-1.826xi2+2.703xi. The improved method generated decreased value of the contribution of population density in the intensive land use of the metropolitan economic circle, compared to the traditional method. While, increased values were derived from the improved method in different degrees in other areas. 3) The evaluation results from the improved method are more objective and rational compared to the traditional method. Furthermore, the results from the improved method suggest policies more consistent with the population control strategy of the five functional districts of the Chongqing city. Although the quadratic multi-factor comprehensive evaluation model shows strength in standardizing population density of Chongqing, it needs further improvement and applications in other area.

Key words: moderate indicator, intensive land use, indicator standardization, population density

中图分类号: 

  • F302.2