城乡景观复杂度视角下的城乡交错带界限确定——以武汉市为例

The Determination of Urban-Rural Ecotones from the Perspective of Urban and Rural Landscape Complexity

以城乡景观复杂度为视角,构建包含土地利用现状、权属、产业、土地规划在内的城乡属性要素体系,运用景观复杂度指数,基于G-统计量确定城乡地域范围内城乡景观复杂度高值集聚区为城乡交错带空间界限,对武汉市城乡交错带界限予以空间呈现。研究发现:①城乡景观复杂度在城乡地域之间呈现"M"型分布,城乡交错带景观复杂度最高;②G-统计量确定城乡景观复杂度高值集聚区为城乡交错带空间界限可信度较高;③城乡交错带是包含自然和人文要素在内的城乡属性要素集合体;④应发挥城乡交错带空间功能促进城乡融合。

Urban-rural ecotones has become an independent regional unit that can not be ignored. But the method to determine its boundary still need to be developed. The higher the urban-rural landscape complexity index is, the closer the region is to Urban-rural ecotones. Based on the urban-rural landscape complexity, the boundaries of Urban-rural ecotones can be identified. Urban-rural ecotones is a transitional transformation area of urban-rural attributes, in which many elements are "staggered", and the complexity of urban-rural landscape is higher than that of urban central area and remote rural area. From the perspective of urban and rural landscape complexity, this paper first constructs a spatial element system of urban and rural attributes including land use status, ownership, industry and land planning. Then, using landscape complexity index, based on G-statistics, it determines that urban and rural landscape high-value concentration areas in urban and rural areas are the spatial boundaries of Urban-rural ecotones. Finally, the spatial boundaries of Urbanrural ecotones in Wuhan City are given. Presented in space. The results show that: 1) the complexity of urban and rural landscape presents a "M" distribution between urban and rural areas, and the landscape complexity of Urban-rural ecotones is the highest;2) G-statistics confirms that the high-value agglomeration area of urban and rural landscape complexity is Urban-rural ecotones with high spatial boundaries. 3) Urban-rural ecotones is a collection of urban-rural attribute elements including natural and human factors;4) Spatial function of Urban-rural ecotones should be brought into full play to promote urban-rural integration. The research methods in this paper are innovative, and the conclusions can provide reference for precise prevention and resolution of major risks in Urban-rural ecotones of key regions.