不同地貌景观格局的空间幅度效应  

Spatial Magnitude Effects of Different Landscape Patterns

作　　者：林子航 李晓兵 刘学录[1] 刘星雨 张晓东 Lin Zihang;Li Xiaobing;Liu Xuelu;Liu Xingyu;Zhang Xiaodong(College of Resources and Environment,Gansu Agricultural University,Lanzhou Gansu 730070;Office of the State Forestry and Grassland Administration Supervisor of Forest Resources Monitoring in Xi’an,Xi’an Shanxi 710048;College of Forestry,Gansu Agricultural University,Lanzhou Gansu 730070,China)

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070 [2]国家林业和草原局驻西安森林资源监测监督专员办事处,陕西西安710048 [3]甘肃农业大学林学院,甘肃兰州730070

出　　处：《国土与自然资源研究》2025年第3期48-54,共7页Territory & Natural Resources Study

基　　金：甘肃省国土资源厅“多规合一背景下的生态型土地整治与生态屏障功能研究”(GAU-XZ-20160812)。

摘　　要：研究不同地貌景观格局的空间幅度效应,有助于为不同地貌土地规划和管理决策提供科学依据。本文选择平原、山地和丘陵地貌中各一个100 km×100 km的正方形区域为研究对象。采用2020年的Landsat-8遥感影像数据解译成土地利用类型图,通过计算景观格局指数和Arc GIS空间分析等方法,分析了不同地貌景观格局的空间幅度效应及其变异规律。结果表明,(1)不同地貌内的相同景观组分特征及尺度效应均存在差异。(2)从斑块水平层面分析,各指数对幅度的变化表现出不同的敏感性和趋势。(3)不同景观组分在不同地貌类型中的尺度效应不同,总体而言,第一特征幅度在25 km附近,第二有效幅度在90 km附近。研究表明景观格局的尺度效应与研究区的景观结构存在较大关系,结果有助于深入了解和探讨景观在不同尺度上的变化对生态过程的影响。Studying the spatial magnitude effects of different landscape patterns helps to provide a scientific basis for land planning and management decisions in different landscapes.In this paper,a 100 km×100 km square area in each of the plains,mountains and hills landscapes is selected as the research object.The Landsat-8 remote sensing image data in 2020 were used to decode the land use type map,and the spatial magnitude effects of landscape patterns of different landforms and their variation patterns were analysed by calculating the landscape pattern index and spatial analysis with ArcGIS.The results show that,(1)the same landscape component characteristics and scale effects within different landforms are different.(2)Analysed at the patch level,the indices showed different sensitivities and trends to changes in magnitude.(3)The scale effects of different landscape components in different landform types were different,and in general,the first characteristic magnitude was near 25 km and the second effective magnitude was near 90 km. The study shows that the scale effect of landscape pattern has a greater relationship with the landscape structure of the study area, and the results help to deeply understand and explore the effects of landscape changes at different scales on ecological processes.

关 键 词：不同地貌 景观格局 景观指数 空间幅度 

分 类 号：X87[环境科学与工程—环境工程]