森林景观格局研究中的尺度效应  

Scale Effects on Study of Forest Landscape Pattern

作　　者：郭泺[1] 夏北成[1] 余世孝[2] 

机构地区：[1]中山大学环境科学与工程学院,广州510275 [2]中山大学生命科学学院,广州510275

出　　处：《应用与环境生物学报》2006年第3期304-307,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金(No.30370254)~~

摘　　要：以TM影像和野外调查为数据源,以3S技术为研究手段,从研究区域不同的取样尺度入手,分析了尺度变化对区域景观格局研究的影响.结果表明,研究区景观斑块的数量、最大斑块面积与取样面积之间关系密切.取样面积对景观格局的影响分析显示,在取样面积为研究区面积的70%时,景观多样性最高,平均多样性指数为1.854.当取样面积小于总面积的69%时,景观优势度指数呈增加的趋势.Using Landsat TM images, field survey data and 3S techniques, the effects of different scales on regional landscape pattern were analyzed in the study area. The result indicated that the variation of sampling scales was an important factor to analyze forest landscape pattern. Maximum patch area and patch amount were significantly related to sampling area. The landscape diversity reached the highest when sampling area was about 70% of the studied area. The average of landscape diversity indices was 1. 854. The index of landscape dominance was increasing, when sampling area was 69% lower than the study area. Fig 4, Tab 2, Ref 16

关 键 词：景观格局 景观多样性 尺度效应 

分 类 号：S718.5[农业科学—林学]