摘要
以重庆市万盛区南桐镇土地开发整理为例,选取斑块特征指标和景观格局指标,对比分析规划实施前后土地开发整理对区域土地利用结构、斑块特征及景观格局的影响。研究表明,通过荒草地的开发和田土坎的合并,土地利用结构中变化最大的为耕地和其他土地,并净增加耕地面积74.91 hm^2;新修的生产路、沟渠使得最小斑块面积、最大斑块面积、平均斑块面积都有所降低,斑块总数和斑块密度增加,景观优势度降低,景观多样性、均匀度和破碎度增加,区域总体景观格局更加复杂。
Forecasting quantitatively the changes of landscape pattern caused by land development and consolidation is an important part of environmental impact assessment before the planning. With land consolidation project of Nantong Town in Chongqing as an example, this paper selects 9 indexes to compare the land use construction, patch characteristics and landscape patterns after land consolidation. The results indicate an increase of 74.91 hm2 arable land and a change of the cultivated land and the unused land after grassland development and field ridge consolidation. The number of land use patches and their density increase, while the areas of average patch, the largest patch and the least patch decrease after the building of some roads and ditches. However, the indexes of landscape diversity, evenness and fragmentation are inclined to increase while the dominance index decreases. In general, the landscape patterns are more complicated after land development and consolidation.
出处
《国土资源科技管理》
2009年第1期27-31,共5页
Scientific and Technological Management of Land and Resources
基金
重庆市国土局项目--重庆市万盛区南桐镇土地开发整理
关键词
土地开发整理
斑块特征
景观格局
重庆市
land development and consolidation
patch characteristics
landscape pattern
Chongqing City
