摘要
研究目的:基于鹤峰县1:10000土地利用数据,对土地利用数据的景观指数类型及景观水平的粒度效应进行分析。研究方法:GIS和景观格局分析软件应用。研究结果:在类型水平上,景观指数的粒度效应较明显,随粒度的变粗,景观指数可归为单调下降、不规则变化和基本无变化3类;粒度响应最敏感的景观指数为斑块密度;裸地和水田是对粒度响应最敏感的两种土地覆盖类型。在景观水平上,除斑块密度外,其他景观指数粒度效应不明显,斑块密度和面积加权平均分维数的粒度响应最强烈,丰富度指数则最弱。研究结论:粒度效应与所选粒度的变化范围、数据聚合方式、分析景观类型的多少、比例尺的不同都有很大的关系,更深层次的研究需要考虑更加全面。
The purpose of the paper is to conduct a granularity effect analysis on landscape indices of land use in terms of type and level basing on the land use data of Hefeng County at 1：10000 scale. Method employed is the application of GIS and landscape analysis software. The results indicate： （1）the granularity effects of landscape indices are relatively obvious in terms of type level, i.e., as the granularity turning higher the landscape indices can be divided into three types, including： monotonic decrease, irregular variation and basically no variation;（2）landscape indices with the most sensitive granularity effects are in patch density;（3）bare land and paddy field are the two types of land cover that are most sensitive to granularity effects;（4）in terms of landscape levels the granularity effects of other landscape indices are not obvious except the ones in patch density;（5）the granularity effects of patch density and weighted average score dimensions for the area are most intensive while the richness indices of which are lowest. It is concluded that （1）the granularity effects are deeply influenced by the selected granularities in terms of variation range, data aggregation pattern, numbers of analyzed landscape types, differences of scales; （2）therefore in further researches these issues should be considered comprehensively.
出处
《中国土地科学》
CSSCI
北大核心
2010年第11期20-26,共7页
China Land Science
基金
"城市与区域生态国家重点实验室开放基金"资助(SKLURE2010-2-5)
