PCA法下乌鲁木齐城市化与土地集约利用耦合关系研究
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F293.2

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国家自然科学基金项目(71663052);新疆维吾尔自治区社会科学基金项目(2016BGL102)


Analysis of Coupling Relationship between Urbanization and Intensive Land Use in Urumqi under PCA Method
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    摘要:

    采用极值法对原始数据进行标准化处理,在Barttlett和KMO球度检验确定原始变量之间存在相关关系的前提下,运用PCA法将城市化与土地集约利用十五项指标压缩到少数相互独立的主成分中,结合多目标线性加权法分别求得单个主成分得分(Fi)及系统综合得分(Ni);并根据耦合发展度模型中耦合度(C)、耦合发展度(D),对乌鲁木齐城市化与土地集约利用耦合关系进行分析。结果表明:2006~2016年乌鲁木齐城市化水平与土地集约利用程度综合指数总体趋势向好,但存在部分年份指数较低的现象;两系统耦合发展度经历了拮抗时期的濒临失调、磨合时期的勉强协调、低度协调、中度协调和高水平耦合时期的良好协调、优质协调的三个发展阶段六种发展类型;今后应着力缩减因土地集约利用低度化对城市整体发展产生的制约影响,开创乌鲁木齐城市化发展与土地集约利用共生共长、齐头并进的良好局面。

    Abstract:

    The extreme value method was used to standardize the original data. On the premise that Barttlett and KMO sphericity test determined the correlation between the original variables, PCA method was used to compress the 15 indexes of urbanization and intensive land use into a few independent principal components. Single principal component score(Fi) and system composite score(Ni) were obtained by combining multi-objective linear weighting method. According to the coupling degree(C) and coupling development degree(D) of coupling development degree model, the coupling relationship between urbanization and intensive land use in Urumqi is analyzed. The results show that the overall trend of the comprehensive index of urbanization level and land intensive utilization degree in Urumqi from 2006 to 2016 is good, but the index of some years is low. The coupling development of the two systems has experienced six development types in three stages, namely, near disorder in antagonistic period, reluctant coordination in run-in period, low coordination, moderate coordination and good coordination in high level coupling period, and high quality coordination. In the future, efforts should be made to reduce the restrictive influence of low intensity of land intensive use on the overall development of the city, so as to create a good situation in which the urbanization development and land intensive use go hand in hand.

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李聪,章迎春,王承武. PCA法下乌鲁木齐城市化与土地集约利用耦合关系研究[J].东北农业科学,2020,45(5):139-144.

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  • 收稿日期:2018-09-19
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  • 在线发布日期: 2024-11-26
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