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[1]GONG Jie,MA Xuecheng,ZHANG Lingling,et al.Spatiotemporal Variation of Habitat Quality in Bailongjiang Watershed in Gansu Based on InVEST Model[J].Research of Soil and Water Conservation,2018,25(03):191-196.

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Spatiotemporal Variation of Habitat Quality in Bailongjiang Watershed in Gansu Based on InVEST Model

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 03 Page number: 191-196 Column: Public date: 2018-04-10

Title:: Spatiotemporal Variation of Habitat Quality in Bailongjiang Watershed in Gansu Based on InVEST Model

Author(s):: GONG Jie, MA Xuecheng, ZHANG Lingling, LIU Dongqing, ZHANG Jinxi; Key Laboratory of Western China’s Environmental Systems, Ministry of Education, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China

Keywords:: habitat quality; spatiotemporal variation; InVEST model; Bailongjiang Watershed in Gansu

CLC:: X171.1;X826

DOI:: -

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.

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