土地整治对耕地景观细碎化治理效果的区域差异研究

Study on Regional Differences in Effect of Land Consolidation on Cropland Landscape Fragmentation

土地整治是当前治理耕地景观细碎化问题的主要措施,其治理效果尚需实证评价。以赣西北为研究区,选取斑块数量(NP)、地块平均面积(MPS)等8个景观指标构建了耕地景观细碎化指数模型,基于田块尺度对29个项目区整治前、后的耕地空间破碎化指数进行测算,通过配对样本t检验、方差分析和空间分析。结果表明:土地整治工程对耕地景观细碎化治理有显著的效果,但在平原区和丘陵区的治理效果存在明显差异,平原区整体优于丘陵区,且部分丘陵区耕地景观破碎化指数有所增加。

Land consolidation is currently the main means to govern cropland fragmentation,but its effects on governance still need to be assessed empirically.In the paper,northwest of Jiangxi Province was taken as the study area,and eight landscape indicators such as number of patches(NP)and mean plot area(MPS)were selected to build a cropland landscape fragmentation index model,which were used to measure the degree of spatial fragmentation of cropland in 29 project areas before and after remediation on a field scale,and the paired sample t test,variance analysis and spatial analysis were used.The results show that the land consolidation project has a significant impact on the governance of cropland landscape fragmentation,but the difference the governance effect between plain and hilly regions is more pronounced.Overall,the plain surpasses the hilly regions,and the degree of cropland landscape fragmentation has increased in some hilly regions.