Studying the differences in the township gradient of rural construction land structures at the microscale is beneficial for the adjustment of rural construction land structure based on local conditions and differentiation, for the classification and guidance of the scientific planning and management of rural construction land, and for improving the level of intensive use of rural construction land. In this study, we took 268 administrative villages of Yuzhong County in the Loess Hilly Region as the research object and conducted research on the internal structure and gradient difference of rural construction land from two aspects: quantitative structure and spatial layout. The main conclusions are as follows: (1) the distribution of rural construction land has significant connection with the river and road. The land structure of the county is simple, with large differences in area and uneven quantities between different types; (2) the shape of a rural construction land patch is complicated, with a high degree of fragmentation. The spatial agglomeration is not significant, and there is a significant difference between “east-west-north-south” in space; (3) the rural construction land has a significant gradient effect at the township level. In terms of quantitative structure, the closer the construction land is to key towns and central towns, the more complex the construction land, the higher the information entropy as well as the equilibrium degree, and the lower the dominant degree. Moreover, the spatial layout shows an upward trend in the fractal dimension, fragmentation degree and separation degree when the level of the township decreases.

中文翻译：

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黄土丘陵区农村建设用地结构梯度差异研究-以甘肃省榆中县为例

从微观上研究农村建设用地结构的乡镇梯度差异，有利于因地制宜，差异化调整农村建设用地结构，有利于农村建设用地科学规划管理的分类指导。提高农村建设用地集约利用水平。本研究以黄土丘陵区榆中县的268个行政村为研究对象，从数量结构和空间布局两个方面对农村建设用地的内部结构和梯度差异进行了研究。主要结论如下：（1）农村建设用地的分布与河流，道路有着密切的联系。该县土地结构简单，面积差异大，不同类型土地数量不均。（2）农村建设用地斑块形状复杂，破碎程度高。空间集聚不显着，空间“东西-南-北-南”之间存在显着差异。（3）农村建设用地在乡镇一级具有明显的梯度效应。从数量结构上看，建设用地距离重点城镇和中心镇越近，建设用地越复杂，信息熵和均衡度越高，主导度越低。此外，当乡镇水平降低时，空间布局的分形维数，破碎度和分离度呈上升趋势。面积差异很大，不同类型之间的数量不均；（2）农村建设用地斑块形状复杂，破碎程度高。空间集聚不显着，空间“东西-南-北-南”之间存在显着差异。（3）农村建设用地在乡镇一级具有明显的梯度效应。从数量结构上看，建设用地距离重点城镇和中心镇越近，建设用地越复杂，信息熵和均衡度越高，主导度越低。此外，当乡镇水平降低时，空间布局的分形维数，破碎度和分离度呈上升趋势。面积差异很大，不同类型之间的数量不均；（2）农村建设用地斑块形状复杂，破碎程度高。空间集聚不显着，空间“东西-南-北-南”之间存在显着差异。（3）农村建设用地在乡镇一级具有明显的梯度效应。从数量结构上看，建设用地距离重点城镇和中心镇越近，建设用地越复杂，信息熵和均衡度越高，主导度越低。此外，当乡镇水平降低时，空间布局的分形维数，破碎度和分离度呈上升趋势。