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黄土丘陵小流域景观格局指数的粒度效应
引用本文:邱扬,杨磊,王军,张英,孟庆华,张晓光.黄土丘陵小流域景观格局指数的粒度效应[J].应用生态学报,2010,21(5):1159-1166.
作者姓名:邱扬  杨磊  王军  张英  孟庆华  张晓光
作者单位:1. 北京师范大学地理学与遥感科学学院,北京,100875
2. 中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京,100085
3. 国土资源部土地整理中心,北京,100035
4. 国家林业局调查规划设计院,北京,100055
5. 河北省林业局防沙治沙工程管理办公室,石家庄,050081
基金项目:国家基础研究发展计划重点项目(2007CB407204); 国家自然科学基金项目(30970503); 国家科技支撑计划项目(2006DAJ05A08,2008BAB38B02)资助
摘    要:采用基于GIS的景观格局分析法,研究了1975—2007年黄土丘陵沟壑区大南沟小流域景观格局指数在1~50m粒度范围内的粒度效应.结果表明:研究区小流域景观格局指数的粒度效应明显,不同年份之间的差异显著;该区景观格局指数的粒度效应可分为5种类型,即稳定不变型、平稳降低型、波动降低型、波幅增强型和不规则变化型.研究区景观的斑块丰富度属于稳定不变型,即随着粒度增大保持不变;边界长度、边界密度、景观形状指数、聚合度指数和蔓延度指数属于平衡降低型,即随着粒度增大呈显著的线性降低趋势;分维数随粒度增大呈波动递减趋势,属于波动降低型粒度效应;景观总面积、Shannon多样性指数和Shan-non均匀度指数的波幅呈显著增大趋势,属于波幅增强型粒度效应;不规则变化型粒度效应的景观格局指数包括斑块数、斑块密度、平均斑块面积、最大斑块指数、破碎度指数和景观分离度指数.1975年研究区上述景观格局指数的粒度效应与其他年份之间的差异显著,甚至截然相反.

关 键 词:景观格局  尺度  粒度效应  黄土丘陵小流域

Grain effect of landscape pattern indices in a gully catchment of Loess Plateau,China
QIU Yang,YANG Lei,WANG Jun,ZHANG Ying,MENG Qing-hua,ZHANG Xiao-guang.Grain effect of landscape pattern indices in a gully catchment of Loess Plateau,China[J].Chinese Journal of Applied Ecology,2010,21(5):1159-1166.
Authors:QIU Yang  YANG Lei  WANG Jun  ZHANG Ying  MENG Qing-hua  ZHANG Xiao-guang
Institution:QIU Yang1,YANG Lei2,WANG Jun3,ZHANG Ying1,MENG Qing-hua4,ZHANG Xiao-guang5 (1School of Geography,Beijing Normal University,Beijing 100875,China,2State Key Laboratory of Urban , Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,3L, Consolidation , Rehabilitation Center,Ministry of L, , Resources,Beijing 100035,4 Academy of Forest Inventory , Planning,State Forestry Administration,Beijing 100055,5S, Control Project Ma...
Abstract:By using landscape pattern analysis based on GIS, this paper studied the grain effect of landscape pattern indices with a scale 1-50 m in a gully catchment of the Loess Plateau, China from 1975 to 2007. In the catchment, the grain effect was obvious, and differed significantly with year. The grain effect had five types, i.e., stable, stable decreasing, undulatory decreasing, amplitude-accreting, and anomalistic changing. With increasing grain, the stable grain effect showed a stable patch richness density, the stable decreasing grain effect showed a decreasing trend of total edge, edge density, landscape shape index, aggregation index, and contagion index, the undulatory decreasing grain effect showed an undulatory decreasing trend of perimeter-area fractal dimension, the amplitude-accreting grain effect showed an amplitude increasing trend of total area, Shannon’s diversity index, and evenness index, and the anomalistic changing grain effect showed an anomalistic change of patch number, patch density, mean patch area, largest patch index, splitting index, and landscape division index. In 1975, the grain effect of all the indices differed significantly from that in other years, and even, was in opposite.
Keywords:landscape pattern  scale  grain effect  gully catchment of Loess Plateau
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