松嫩高平原土地利用格局空间尺度识别及其关联关系研究

发布时间：2019-06-09 19:35

【摘要】：研究目的:实现由传统的人工识别到自动识别土地利用格局空间尺度的方法创新,为优化区域土地利用格局提供科学依据。研究方法:基于分形理论,采用二阶导数对计盒维数模型进行改进和优化。研究结果:(1)研究区土地利用格局在900 m×900 m尺度上具有明显的分形特征;(2)1991年、2003年和2015年研究区土地利用格局表现为各土地利用类型之间空间作用力、分布均匀程度和内部联结性的大小不同,并呈现出空间相互关联关系复杂性;(3)1991—2015年,研究区土地利用格局空间相互关联关系变化特征明显,表现为土地利用格局中竞争强度强弱的差异。研究结论:(1)改进的计盒维数模型能够实现土地利用格局空间尺度的自动识别;(2)建立的计盒维数自动识别尺度模型,确定研究区土地利用格局空间尺度900 m×900 m是独立最小地理单元,也是分析土地利用格局变化的最优尺度。
[Abstract]:The purpose of this study is to realize the innovation of the method from traditional manual identification to automatic identification of the spatial scale of land use pattern, and to provide scientific basis for optimizing the regional land use pattern. Research methods: based on fractal theory, the second derivative is used to improve and optimize the box dimension model. The results are as follows: (1) the land use pattern in the study area has obvious fractal characteristics on the scale of 900 m 脳 900 m; (2) in 1991, 2003 and 2015, the land use pattern of the study area showed the spatial force among the land use types, the degree of uniformity of distribution and the size of internal connection were different, and showed the complexity of spatial correlation; (3) from 1991 to 2015, the spatial correlation characteristics of land use pattern in the study area are obvious, which shows the difference of competition intensity in land use pattern. The conclusions are as follows: (1) the improved box dimension model can realize the automatic recognition of the spatial scale of land use pattern; (2) the automatic identification scale model of box dimension is established, and it is determined that the spatial scale of land use pattern 900 m 脳 900 m is the independent minimum geographical unit, and it is also the optimal scale for analyzing the change of land use pattern.
【作者单位】：东北大学土地管理研究所;
【基金】：国家自然科学基金项目(41571165) 中央高校基本科研业务费(N151406001)
【分类号】：F301.24

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