水土保持研究2018，Vol.25Issue(3)：191-196,6.
基于InVEST模型的甘肃白龙江流域生境质量时空分异
Spatiotemporal Variation of Habitat Quality in Bailongjiang Watershed in Gansu Based on InVEST Model
摘要
Abstract
Based on GIS techniques and InVEST model,the Landsat TM/ETM+ images from 1977,1990,2002 and 2014,we analyzed the spatiotemporal variation of habitat quality in the Bailongjiang Watershed (BLJ watershed) in Gansu to provide the scientific support for natural ecosystem management and sustainable development.The results showed that:(1) forestland and grassland were the main land types in the watershed,and the increase rates of forestland,farmland and construction were 0.4％,0.36％ and 3.7％,respectively,and the grassland,unused land and water area reduced about 0.5％ from 1977 to 2014;(2) the habitat quality showed a tendency of the decreased first and then increased slowly;(3) the higher habitat quality area mainly distributed in the northwestern BLJ Watershed and the southern part of Wenxian and gathered with area of the nature reserve and forest;the areas with the relatively poor habitat quality mainly distributed in river valleys,farmland area,urban and rural settlement,the bare land and grassland with low vegetation coverage,and gathered in the bank area of Baishuijiang between Zhouqu-Wudu,the adjacent area between Wenxian and Wudu,and the northwestern Tanchang.This study results can provide scientific support for watershed habitat conservation and ecological construction in the mountainous areas in west China.关键词
生境质量/时空分异/InVEST模型/甘肃白龙江流域Key words
habitat quality/spatiotemporal variation/InVEST model/Bailongjiang Watershed in Gansu分类
资源环境引用本文复制引用
巩杰,马学成,张玲玲,柳冬青,张金茜..基于InVEST模型的甘肃白龙江流域生境质量时空分异[J].水土保持研究,2018,25(3):191-196,6.基金项目
国家自然科学基金“甘肃白龙江流域景观格局与生态系统服务功能时空变化研究”(4127199) （4127199）
