景观格局视角下平山县耕地规模化整理潜力评价

Evaluation Method of Cultivated Land-scaled Consolidation Potential Based on Landscape Pattern Principle

从地形条件和土地景观格局两方面选取高程、地形起伏度、斑块面积指数等8项指标构建耕地规模化整理潜力评价指标体系。以平山县为研究区,在ArcGIS空间分析功能支撑下探讨了村级间耕地规模化整理难易程度,并采用障碍诊断分析方法分析制约了耕地规模化整理的限制因素,以期为今后区域土地整理提供科学依据。结果表明:平山县村级耕地规模化整理潜力指数分布在[0.12,0.9]区间内,村级间差异较大,整体上由西北向东南依次递增;从耕地规模化整理分区结果来看,四级区的耕地面积最多(51.2%),其次为三级区(21.3%),五级区和二级区耕地面积总和与三级区相当,一级区的耕地面积最少(0.9%),分区等级越大耕地规模化整理越容易;整理由难变易时,主要障碍因素由耕地资源丰度(RI)和地形起伏度(RDLS)逐渐变为耕地聚集度(CI)和耕地资源丰度(RI)。

In this paper,eight indexes such as altitude,relief amplitude,patch area and extra,from two perspectives of terrain conditions and landscape pattern,have been selected to structure the potential evaluation index system of cultivated land-scaled consolidation.In order to provide a scientific basis for future regional land consolidation,Pingshan County is selected as the study area,and the complexity of cultivated land-scaled consolidation at village level is studied under the spatial analysis function of ArcGIS,and the limiting factors of cultivated land-scaled consolidation is analyzed by using the obstacle diagnosis method.The results show that the cultivated land-scaled consolidation potential index value distributes in[0.12,0.9],and differs greatly in villages.Furthermore,the index value increases overall from the northwest to the southeast.The partition results of cultivated land-scaled consolidation show that the cultivated land in the quaternary area is the largest（51.2%）and in the tertiary area is the second largest（21.3%）.The total cultivated land area of the quinary area and the second area is equal to the tertiary area.The cultivated land in the first area is the least（0.9%）.The greater degree of partitions is,the easier cultivated land-scaled consolidation is.When consolidation becomes easier,the major obstacle factors of cultivated land-scaled consolidation change from RI and RDLS to CI and RI.