生态学报2017，Vol.37Issue(19)：6448-6456,9.DOI:10.5846/stxb201607211486
基于综合指数法的白龙江流域生物多样性空间分异特征研究
Assessment and spatial variation of biodiversity in the Bailong River Watershed of the Gansu Province
摘要
Abstract
The loss of biodiversity has become one of the major global environmental problems,with strengthening of biodiversity conservation and protection urgently required.The first step in solving this problem is the identification and understanding of the spatial variation of biodiversity on a regional scale,with the formulation and implementation of biodiversity protection schemes imperative.This has become the focus of biodiversity assessments over both large and medium scales.The Bailong River Watershed of the Gansu Province (BRWGP),one of the most abundant biodiversity regions in China,is located in the transitional ecotone along the Tibet Plateau,Loess Plateau,and Qinba Mountains.The BRWGP was selected in the present study to analyze the spatial heterogeneity of biodiversity.Inclusion of three assessment indicators (habitat quality,vegetation net primary productivity,and landscape state index) enabled the construction of a comprehensive index system of biodiversity spatial patterns and application of spatial differentiation analysis under the landscape geography perspective.Our goal was to revise the biodiversity evaluation module of the InVEST model and demonstrate biodiversity spatial patterns on a grid cell.The results indicated that biodiversity was high and had obvious spatial pattern variations in the BRWGP.The land area containing higher biodiversity accounted for 39.8％ of the total watershed area,which was mainly distributed in the national nature reserve and forest.The relatively poor biodiversity areas were mainly distributed in the valleys of the BRWGP between Zhouqu-Wudu-Wenxian,the valley of Minjiang in Tanchang County,alpine mountain snow regions,and bare rock zones.关键词
生物多样性/评价指标/空间分异/InVEST模型/甘肃白龙江流域Key words
biodiversity/assessment indicators/spatial variation/InVEST model/Bailong River Watershed of the Gansu Province引用本文复制引用
谢余初,巩杰,齐姗姗,胡宝清,王克林..基于综合指数法的白龙江流域生物多样性空间分异特征研究[J].生态学报,2017,37(19):6448-6456,9.基金项目
国家自然科学基金项目(41271199,41661021) （41271199,41661021）
国家重点研发计划项目(2016YFC0502401) （2016YFC0502401）
广西师范学院科研启动经费资助项目(0819-2016L12) （0819-2016L12）
广西师范学院省部级重点实验室创新基地2017年大学生创新实践训练计划项目 （）
