福建省长汀县朱溪小流域土地利用景观格局分析

以朱溪小流域为研究区,基于GIS和FRAGSTATS软件,对朱溪小流域东部和西部进行了土地利用景观格局对比研究。结果表明:①林地为朱溪小流域的基质景观,主要分布于东部;耕地、居民点及工矿用地、交通用地等人文景观主要分布于西部;②东部景观优势显著,基本上以大斑块为主,呈聚集性分布,异质性低,多样性指数小,景观类型所占比例差异大,林地优势突出;西部景观类型分布相对均衡,多样性指数大,破碎化程度大;③人为活动与地形为东部、西部景观格局形成的主导原因。西部人口分布密集,地势低,东部人口分布稀少,地势高,在其长期影响下形成与之相对应的景观格局。

Analysis on the landscape Pattern of land Use in Zhuxi Small Watershed of Changting County

Based on the application of GIS and Fragstats 3.3 software,the comparative study was conducted to the landscape structure in the east and west regions of Zhuxi small watershed.The results show that,(1) the forest land was the matrix landscape within the study area that distributed mainly in the east region,while the west region was mainly occupied by the human landscape,such as farmland,residential centre,industrial and mineral land,traffic land;(2) landscape at east region enjoys the obvious advantages appearing the aggregated distribution with low heterogeneity and diversity index and great difference of landscape types percentages.Forest land accounts for large percentage with obvious advantages.While the landscape type distribution at west region is relatively balanced with high diversity index and large extent of abnormity;(3) human activities are the main reasons for the forming of the landscape distribution at both east and west part of region.The west region features the low terrain and high population,while the east region features the high terrain and low population,therefore the corresponding landscape patterns were formed under their long term impact.