景观多样性分析及其制图研究

景观多样性是生物多样性研究的主要内容之一。景观多样性是指景观结构、功能和动态的多样性和复杂性。本文讨论了景观多样性的概念、测度和空间制图。提出了景观多样性包括类型多样性、格局多样性和斑块多样性。景观多样性可用多样性指数、优势度、相对丰富度、修改的分维数等指数来测定。一个多样性指数Ｄ＿ｉ＝（ｉ－１）／（ｍ－１）×１００％被给出用于景观多样性制图，黄土高原泉家沟流域被选为研究区域。在地理信息系统的支持下，通过时栅格化的土地利用类型图进行分析操作产生出了研究区域的景观多样性图。对景观多样性进行空间制图有助于分析景观生态过程，研究结果可直接用于景观和土地利用规划、野生动植物保护及立地分析。

VERTICAL DISTRIBUTION OF CHAETOGNATHS IN THE EAST CHINA SEA IN SUMMER OF 1978

andscape diversity,composed of type diversity ,pattern diversity and patch diversity , isan important biodiversity research field. It measures the complexity of landscape structure,function and changes. Landscape diversity can be measured by diversity index , dominance,relative richness and a modified fractal dimension, It can be applied in both a nonspatial(sta-tistical)or a spatial sense. Landscape diversity indicates the number of landscape classes thatare in proximity to each point in a digital grid ce...