长江中游经济带城镇建设用地转型的时空特征

发布时间：2018-01-26 02:20

本文关键词： 城镇建设用地转型均衡度时空特征长江中游经济带　出处：《资源科学》2017年02期 　论文类型：期刊论文

【摘要】：多维度、多时序城镇建设用地转型特征刻画,是深刻揭示城镇建设用地转型规律,高效管控城镇建设用地转型的重要基础。本文从城镇建设用地转型内涵出发,构建城镇建设用地转型特征识别框架,采用转型幅度、转型速度、洛伦兹曲线等对长江中游经济带1990-2015年间城镇建设用地转型时空特征进行系统定量研究。结果表明:(1)城镇建设用地转型来源结构的时序变化显著,耕地占新增城镇建设用地比例持续减小,林地和其他建设用地所占比例则逐渐增大;研究期间,出现将耕地转为其他用地再转为城镇建设用地的"变相式"侵占耕地现象;(2)城镇建设用地经历了高速但不均衡的转型过程,其中面积增幅为153.34%,转型幅度为0.62,基尼系数为0.53;受特定社会经济环境及政策动态的影响,转型幅度、转型速度在时序上经历了"减-增-减"的变化过程;(3)转型幅度高值区呈"两横三纵"的分布格局,与区域内主要公路、铁路线路走向高度吻合;转型速度高值区呈左斜"H"型分布;(4)转型幅度与地形起伏度成反向变动关系,转型速度随地形起伏度的上升先增后减;城市群地区转型幅度高于非城市群地区,而转型速度则恰好相反。
[Abstract]:The characterization of multi-dimension and multi-time sequence of urban construction land transformation is an important basis for revealing the law of urban construction land transformation and effectively managing the transformation of urban construction land. This paper starts from the connotation of urban construction land transformation. Construction of urban construction land transformation characteristics identification framework, using the transformation range, transformation speed. A systematic quantitative study on the temporal and spatial characteristics of urban construction land transformation in the economic belt of the middle reaches of the Yangtze River from 1990 to 2015 was carried out by Lorentz curve. The time series of the transformation of urban construction land source structure is significant. The proportion of cultivated land in new urban construction land decreased, while the proportion of forest land and other construction land increased gradually. During the research period, the phenomenon of "shifting cultivated land into other land and then turning it into urban construction land" appeared. (2) the urban construction land experienced a high-speed but unbalanced transition process, in which the increase of area was 153.34, the range of transformation was 0.62and the Gini coefficient was 0.53; Under the influence of specific social and economic environment and policy dynamics, the range and speed of transformation have experienced the process of "decrease-increase-decrease" in time series; The distribution pattern of "two horizontal and three vertical" in the high value area of the transition range is highly consistent with the main highways and railway lines in the region. The high value region of the transition velocity is the left-oblique "H" type distribution. (4) the range of transition is inversely related to the degree of topographic fluctuation, and the speed of transition increases first and then decreases with the increase of topographic fluctuation. The transformation rate of urban agglomeration is higher than that of non-urban agglomeration, but the speed of transformation is opposite.
【作者单位】：中国地质大学(武汉)公共管理学院;国土资源部法律评价工程重点实验室;中国科学院地理科学与资源研究所;
【基金】：国土资源部公益性行业科研专项(201511004)
【分类号】：F299.23
【正文快照】： 1引言当前,中国社会经济正处在快速转型的重要时期,如何有效破解由以往不尽合理的发展模式所导致的区域发展不协调、城市无序扩张、耕地流失、城市雾霾等社会经济及生态环境问题,寻求可持续的社会经济发展路径已成为学术界与政府部门关注的焦点[1,2]。作为区域人口及社会经济

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