中国岩溶2018，Vol.37Issue(2)：185-191,7.DOI:10.11932/karst20180204
2005-2015年贵阳市生境退化程度对土地利用变化的响应
Habitat degradation degree in response to land use change in Guiyang City from 2005 to 2015
摘要
Abstract
Guiyang City is an important central city in southwest China.It is located in a typical karst ecolog-ical vulnerability region.In recent years,the land use of the city has been reshaped by a series of ecological protection planning and rapid economic development,which has heavily influenced on habitat quality.In or-der to investigate such influence and associated spatial pattern on the urban habitat degradation degree in both karstic and ecologically vulnerable region,this paper attempts to analyze the characteristics of land use change between 2005 and 2015 in the city,based on the land use data,by using Integrated Valuation of Eco-system Services and Trade-offs (InVEST)model.The results show that,(1)Urban construction land,rural settlement and forestland have a sharp increase trend,while paddy field and dry land have an obvious de-crease trend from 2005 to 2015 in Guiyang City.The other land use types have little change in this decade.It is prominent that numerous dry lands have been converted to forestland,land for construction and rural set-tlement,as well as paddy field converted to forestland.(2)During the past ten years,the habitat degrada-tion degree generally has a decreasing trend over the city,which is dominated by slight decrease.The rise of the degradation degree mainly occurs in the south area,while the decreases of the degree are located in the north,east and west of the city.(3)Decreases of high value and low value are main types in change of habi-tat degradation degree hot-spots in Guiyang City.Increasing region of high value is mainly situated in south part of Guiyang,while increasing region of low value and decreasing regions of high value and low value are mainly in north,east and west parts of Guiyang City.Area change of threat land use types (e.g.paddy field,dry land,urban construction land,rural settlement,road,industrial and mining land)exerts a positive impact on habitat degradation degree while area change of natural land use types (e.g.forestland,shrub, grassland,water)has a negative impact on habitat degradation degree.The conversions from paddy field and dry land to urban construction land,rural settlement and forestland due to Green for Grain Project and rapid urbanization are main reasons for the change of habitat degradation degree in Guiyang City.关键词
生境退化/土地利用/InVEST模型/贵阳市Key words
habitat degradation degree/land use change/InVEST model/Guiyang City分类
管理科学引用本文复制引用
韩会庆,王喆,张英佳,苏志华,尹昌应..2005-2015年贵阳市生境退化程度对土地利用变化的响应[J].中国岩溶,2018,37(2):185-191,7.基金项目
国家自然科学基金项目(41561038) （41561038）
贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]217) （黔教合KY字[2017]217）
贵州理工学院学术新苗培养及探索创新项目(黔科合平台人才[2017]5789-23) （黔科合平台人才[2017]5789-23）
