村级尺度耕地细碎化测度研究

Study on the Cultivated Land Fragmentation Factors Measure Method

研究影响耕地细碎化各因素的关系与影响程度,对农用地整治和制定耕地政策提供依据.建立耕地细碎化指数,选取地块分散度、规模、形状、通达度、密度和边界密度6项因素计算指标,以大河涧乡潘家荒村为研究区域,计算指标分值并标准化,然后计算耕地细碎化指数,并对该指数进行灵敏度分析.研究结果表明:(1)根据所建立的耕地细碎化计算模型所求得的总耕地细碎化指数,综合考虑耕地细碎化的6个核心影响因素,具有一定全面性和灵活性;(2)地块分散度、地块规模、地块密度在建立的4个分级中影响程度较高,说明这3个计算指标对耕地细碎化的影响程度较强;(3)地块分散度、地块形状和地块密度对权重的改变反应较为明显,而地块通达度几乎不受权重影响,地块分散度、地块形状和地块密度3项指标在耕地细碎化中影响程度最高.

This paper is aimed to study the effect of cultivated land fragmentation and the influence degree of each factor, which provides the basis for the agricultural land consolidation and the formulation of the land policy. Six factors of parcels including the dispersion, size, shape, accessibility, density, and border density were selected, in order to establish the cultivated land fragmentation index. It takes PanJiahuang village, Da Hejian town as the study area to calculate and standardize the index score, and analyze the index of sensitivity. The results show that： （1） According to the established model of land fragmentation, the total cultivated land fragmentation index is obtained, and the six core factors are considered with some comprehensiveness and flexibility; （2）The degree of impact of dispersion of parcels, size of parcels and density of parcels is higher, indicating that the three factors have the stronger influence on cultivated land fragmentation. （3）The change of dispersion of parcels, size of parcels, and density of parcels on the weight is obvious, while the accessibility of parcels is almost free from the weight of influence; the degree of impact of the first three parcels is highest in cultivated land fragmentation.