岔口小流域不同耕地类型破碎化差异性分析

以岔口小流域为研究对象,基于耕地现状和权属数据,借助GIS技术与FRAGSTATS4.0软件,分析不同耕地类型破碎化的内部差异性,为未来的土地整治及农业规模化经营服务。结果显示,耕地的权属破碎化大于自然破碎化,总体破碎化程度表现为沟坝地坡耕地沟川地梯田;空间分布上呈现为:梯田大面积集中于北部村庄,沟坝地、沟川地沿沟河呈条带状延伸,坡耕地则呈小片状分散布局;耕地适度破碎化益于水土保持,辩证地分析各耕地类型破碎化的影响效应利于土地整治的开展;4种耕地类型的边界褶皱度低。该区应因地制宜地开展土地整治及规模化经营。

Discrepancy Analysis of Types of Farmland Fragmentation in Chakou Watershed

Chakou watershed as a research object, based on the data of farmland status and ownership, and GIS technology and FRAGSTATS 4.0 software, the internal discrepancy of fragmentation about different types of farmland is analyzed to provide service for land consolidation and agricultural large-scale management in the future. The results show that：（1）The ownership fragmentation of farmland is greater than the natural fragmentation, and the overall degree of fragmentation follows as below： ditch dam ground slop farmland ditch ground terraced field;（2）The spatial distribution follows as below ： large area of terraced field concentrates in the northern village, ditch dam ground and ditch ground extend stripped along the ditch and river, but the distribution of slop farmland is scattered as small flakes;（3）The moderate fragmentation of farmland is benefit for conservation of water and soil, the fragment effect of various types of farmland is analyzed dialectically which is helpful to carry out land consolidation;（4）The boundary fold degree of 4types is low. Therefore, the measures of carrying out land consolidation and agricultural large-scale management should be adapted to local conditions.