京津冀地区耕地质量空间分布分形机制研究

发布时间：2018-02-09 02:45

本文关键词： 耕地质量空间分布分形京津冀　出处：《农业机械学报》2017年02期 　论文类型：期刊论文

【摘要】：为了进一步推进京津冀耕地规划统筹和协调配置,实施耕地质量空间管制与全面提升机制,保障京津冀协同发展的耕地资源需求,采用GIS技术、分形理论、灰色关联度分析相结合的方法,系统研究京津冀耕地质量空间分布分形特征及其机制。主要结论为:京津冀耕地质量在空间上呈现规律分布的态势,具有南北差异明显、南高北低、区域边缘低、中间高的特征;分形理论可以用于京津冀耕地质量空间分布的结构特征研究,分形特征反映了京津冀耕地质量类型的空间形态复杂性和空间占据度。京津冀高等地空间结构最简单,形态最稳定,空间占据度在自然质量水平上最高,在经济质量水平上最低;中等地的空间结构和稳定性居中,但空间占据度最大;低等地空间结构复杂度、空间形态稳定性和空间占据度与高等地完全相反。影响京津冀耕地质量分形特征的主要因素是光温/气候等自然条件,农业生产条件和社会经济条件在此基础上进一步扰动了其分形特征。
[Abstract]:In order to further promote the overall planning and coordinated allocation of cultivated land in Beijing-Tianjin-Hebei province, implement the spatial control and overall promotion mechanism of cultivated land quality, and ensure the demand of cultivated land resources for the cooperative development of Beijing-Tianjin-Hebei, GIS technology and fractal theory are adopted. The fractal characteristics and mechanism of spatial distribution of cultivated land quality in Beijing-Tianjin-Hebei are systematically studied by the method of grey correlation degree analysis. The main conclusions are as follows: the quality of cultivated land in Beijing-Tianjin-Hebei has the tendency of regular distribution in space, and the difference between north and south is obvious. Fractal theory can be used to study the spatial distribution of cultivated land quality in Beijing-Tianjin-Hebei Province. The fractal features reflect the complexity of spatial form and spatial occupation of cultivated land quality types in Beijing-Tianjin-Hebei. The spatial structure of Beijing-Tianjin-Hebei is the simplest, the form is the most stable, and the spatial occupation is the highest at the level of natural quality. In the lowest level of economic quality, the spatial structure and stability of the middle place is in the middle, but the space occupying degree is the largest, the complexity of the space structure of the low equal place, The stability of spatial morphology and spatial occupation are completely opposite to those of higher land. The main factors affecting the fractal characteristics of cultivated land quality in Beijing, Tianjin and Hebei are natural conditions, such as light, temperature, climate, and so on. On this basis, agricultural production conditions and social and economic conditions further disturbed its fractal characteristics.
【作者单位】：中国农业大学信息与电气工程学院;国土资源部农用地质量与监控重点实验室;
【分类号】：F301.21

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