黄土高原小流域尺度土地利用景观格局指数的粒度效应  

Effects of Grain Change on Landscape Metrics of Landuse in Small Watershed on Loess Plateau

作　　者：刘德林[1,2] 方炫[3] 李壁成[2] 

机构地区：[1]河南理工大学应急管理学院,河南焦作454000 [2]中国科学院 教育部水土保持与生态环境研究中心,陕西杨陵712100 [3]宿迁学院,江苏宿迁223800

出　　处：《水土保持通报》2013年第4期206-210,共5页Bulletin of Soil and Water Conservation

基　　金：“十一五”国家科技支撑计划重大项目“半干旱黄土丘陵区土地利用格局与优化模式研究”(2006BCA01A07-2);河南省教育厅科学技术研究重点项目“河南郑东新区LUCC对区域水质的影响”(12A610005)

摘　　要：以黄土高原上黄小流域1982--2008年的6期土地利用矢量图为基础，运用GIS和Fragstats软件计算并研究了黄土高原小流域尺度下景观格局指数随粒度增加的变化特征。结果表明，上黄小流域土地利用的大部分景观格局指数存在粒度效应。根据景观格局指数随粒度增加所表现的变化趋势可分为5大类型；就1：1万比例尺下的土地利用类型／景观图而言，其景观格局指数的适宜粒度范围为5～15m，其粒度效应主要受制图比例尺控制而与土地利用变化关系不大。Based on the six land use maps from 1982 to 2008 of the Shanghuang watershed, the landscape metrics on landscape scale was calculated by using GIS and Fragstats 3.3 software. And the characteristics of grain changes of these metrics were studied. The results showed that most of these landscape metrics have grain effects, and could be divided into 5 different types according to their change characteristics with the in- crease of grain. The appropriate grain range of landscape metrics was 5~15 m at the 1 = 10 000 scale, and their grain effects were mainly controlled by the mapping scale rather than the change of land use.

关 键 词：黄土高原 小流域 土地利用 景观指数 粒度效应 

分 类 号：Q149[生物学—生态学]