摘要
将GIS和统计分析相结合,以2010年土地利用类型图为基础,选取了斑块面积等8种景观指标,通过计算景观指标分析了拉市海流域景观多样性的空间分布特征.结果表明:林地作为流域内景观基质,由于人为影响其斑块形状较复杂;耕地分布均匀,聚合度连接度都较高;水域分布空间差异性明显,且多以大斑块团聚分布;草地和建筑用地分布零碎但连接度良好;未利用地集中分布于个别村.研究区内景观类型多样性随海拔升高因人类活动影响减弱而降低.
Based on the land use map of 2010, by using the methods of GIS and statisticalanalysis, it selected 8 landscape metrics to analyze the spatial distribution of landscape diver- sity in Lashihai watershed. The results showed that. forest land was the landscape matrixfor the basin, because of the human activities influencing its patch shape which became more complex; farmland was distributed evenly which had a high degree of aggregation index andCOHESION; significant differences presented in spatial distribution of water, and mainly composed with large patches; the patches of grassland and building land was fragmented butconnected well; undeveloped land concentrated in several individual village. Within the study area, the diversity of landscape types decreased with increasing elevation due to human di-mension reduced.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第3期65-71,共7页
Journal of Fujian Normal University：Natural Science Edition
基金
UNEP/GEF长江流域自然保护与洪水控制项目(IMIS:GFL-2328-2740-4822
PMS:GF/3030-04-05-05)
关键词
拉市海
景观多样性
景观指标
Lashihai
landscape diversity
landscape metrics
