Shallow and low hills are important geomorphic types in southwest China,exploring the characteristics of cultivated land fragmentation in the background and guiding zoning regulation can help regional agriculture achieve large-scale operation and rural revitalization.A village in Dianjiang county,Chongqing was selected as the study area at the village scale.With land plot as the evaluation unit,three natural fragmentation indicators and three ownership fragmentation indicators were selected.The entropy weight method and comprehensive index method were used to calculate the index weight and natural fragmentation index and ownership fragmentation index of each land plot separately.At last,different coupling types of fragmentation were obtained by four quadrant method.The results were as follows:1)The natural dominated fragmentation in the study area was mainly medium(53.41～64.2),while the ownership dominated was mainly high(66.61～77.40),and the ownership dominated fragmentation was higher than the natural.2)The areas with high degree of natural fragmentation are mainly concentrated around the ridge and the edge of the valley,and the degree is positively correlated with slope;However,the spatial distribution of ownership fragmentation degree is mixed with each other and develops comprehensively.3)The results of four quadrants were high natural and high ownership fragmentation,low natural and high ownership fragmentation,high natural and low ownership fragmentation,low natural and low ownership fragmentation respectively,accounting for 31%,32%,17%and 20%.4)When the cultivated land fragmentation consolidation is carried out in the village area,the land consolidation project and ownership adjustment should be based on the combination type of fragmentation according to local conditions,especially in the aspect of ownership adjustment.The regions with high natural fragmentation(high natural and high ownership fragmentation,high natural and low ownership fragmentation)and regions with low natural fragmentation(low natural and high ownership fragmentation,low natural and low ownership fragmentation)can be creatively transferred to different types of operators,so that they can carry out professional management respectively.Under the background of shallow hill and low hill landform,cultivated land fragmentation is dominated by ownership fragmentation,and different coupling types should be divided into land consolidation and ownership adjustment according to local conditions.
shallow and low hillsnature dominates fragmentationownership dominated fragmentationfour quadrantzoning
万方数据
维普
