摘要
黔中喀斯特山地城市具有城山镶嵌的独特景观特征,在快速城市化和生态文明示范城市建设的双重影响下,优化喀斯特山地城市土地利用格局,对于科学制定国土生态空间规划,推进生态文明示范城市建设具有重要意义.以贵阳市花溪区为研究对象,以2008年、2013年和2018年Landsat遥感影像为主要数据源,运用空间信息技术和方法,系统分析花溪区近10年生态用地的时空演变和梯度特征.结果表明:2008-2018年,花溪区生态用地数量快速增加,已由2008年耕地为主的农业用地主导型格局,演变为2018年以林地占优的生态用地主导型格局;10年间,花溪区土地利用从经济建设转型为生态建设,2008-2013年为土地利用发展期,注重城市建设和经济发展;2013-2018年为土地利用快速调整期,以生态建设为主.花溪区基本形成“生态用地环抱城市”型生态用地空间格局,不同方位上呈现“北部城市化、南部生态化”的趋势和“跳跃式与外延型耦合”的喀斯特山地城市化扩张模式.
The karst mountainous cities in central Guizhou have the unique landscape feature of a mosaic pattern of cities interlaced with mountains.Taking Huaxi District of Guiyang as the research object,and using Landsat remote sensing images in 2008,2013 and 2018 as the main data sources,spatial information technology and methods were used to systematically analyze the spatial and temporal evolution and gradient characteristics of ecological land in Huaxi District in the 10 years.Under the dual influence of rapid urbanization and the construction of anecological civilization demonstration city,optimizing the land use pattern of karst mountainous cities is of great significance for scientifically formulating the land and ecological space planning and promoting the construction of anecological civilization demonstration city.The results showed thatthe amount of ecological land in Huaxi District increased rapidlyfrom 2008 to 2018,and the district evolved from an agricultural land-dominated pattern in 2008 to a forest-dominated ecological land-dominated pattern in 2018.In the 10 years,land use in Huaxi District changed from economic construction to ecological construction.2008-2013 was the period of land use development,focusing on urban construction and economic development;2013-2018 was the period of rapid adjustment of land use,focusing on ecological construction.A spatial pattern of ecological land took shape in the main in Huaxi District,and a spatial pattern of“ecological land surrounding the city”was basically formed.In different directions,a trend of“urbanization in the north and ecologization in the south”and a model of“coupling and extension”forkarst mountainous urbanization expansion were presented.
作者
王志杰
程玉卓
班先娅
刘利萍
WANG Zhi-jie;CHENG Yu-zhuo;BAN Xian-ya;LIU Li-ping(College of Life Sciences,Guizhou University,Guiyang 550025,China;Collaborative Innovation Center for Mountain Ecology&Agro-Bioengineering,Guiyang 550025,China)
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第9期155-164,共10页
Journal of Southwest University(Natural Science Edition)
基金
国家自然科学基金项目(41701319)
贵州省科技支撑计划项目(黔科合支撑[2018]2854)
贵州省生物学一流学科建设项目(GNYL[2017]009).
