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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

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)

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.

• F302.2