摘要
在GIS技术的支持下,选取了不同坡度旱地的斑块总面积、斑块平均面积、斑块平均周长、斑块个数、斑块平均密度、斑块总面积占项目区实施面积的比例等指标分析了土地整理前后斑块的变化;运用廊道长度、宽度、密度、连通性、环度、各类型廊道长度占项目区廊道总长度的比例等指标分析了整理前后廊道的变化特征。研究结果表明:土地整理后,斑块的平均面积、平均周长增大,斑块个数减少和斑块平均密度变小,形状更加规范化;耕地景观破碎度降低,廊道布局更加合理;各类型廊道结构更加完善,功能更加齐全,各类型廊道的连通性和环度明显提高。
Based on the GIS technique, this article analyses the features of patch before and after land consolidation, the indices of the total and average areas of patch, the average perimeter and density of patch, the patch number and the proportion of patch area to the item implement area are selected in different slopes of unirrigated cultivated land. The characteristics of corridor before and after consolidation are illustrated by the indices of corridor length, width, density, networks connectivity, networks ring and so on. The results indicate that the average patch area and perimeter are obviously increased and the average density and patch numbers are decreased; The shapes will become much more standard, which will decrease the degree of fragmentation of cultivated landscape and make the structure of corridor more stable; The layout of corridor project area are more rational, the structure and function of various types of corridors become more comprehensive and perfectly. Meanwhile, the networks connectivity and ring of corridor are enhanced, which will benefit the flow of energy and material, increase the stability of its ecosystem and productivity.
出处
《云南地理环境研究》
2008年第2期55-58,共4页
Yunnan Geographic Environment Research
关键词
西南丘陵区
土地整理
景观效应
southwest mound area
land Consolidation
landscape effects
