摘要
通过揭示喀斯特城市新区土地利用和生态效应本质联系及变化趋势,基于转移矩阵、动态度模型、生态环境质量指数和生态贡献率,定量分析观山湖区2010—2020年土地利用动态变化特征及其生态效应。结果表明:(1)观山湖区以林地、耕地和建设用地为主要土地利用类型,10年来水田和旱地呈减少趋势,灌木林地和城镇用地面积增长最大,东部城镇用地逐年向西南方向扩张,耕地转出面积最大,2015—2020年综合土地利用动态度达到峰值(0.546%)。(2)生态系统服务功能因林地增加不断增强,土地覆被状况指数与生态环境质量呈正比关系。(3)旱地和其他林地向有林地转移是改善生态环境的主要原因,有林地向旱地、城镇用地转移是导致生态环境恶化的主要驱动因素,2010—2020年观山湖区整体生态效应呈良性发展。
By revealing the essential relationship and change trend of land use and ecological effect in newly developed regional of Karst cities,the characteristics of land use dynamic change and ecological effects of Guanshanhu District from 2010 to 2020 were quantitatively analyzed based on the transition matrix,dynamic model,ecological environment quality index and ecological contribution rate.The results showed that:(1)the main land types in Guanshanhu District were forest land,cultivated land and construction land.During the past 10 years,paddy fields and dry land showed a decreased trend.The greatest increases were shrub land and urban land.Eastern urban land expanded to the southwest year by year.The area of cultivated land transferred out was the largest.Moreover,the comprehensive land use dynamic degree reached the peak(0.546%)from 2015 to 2020.(2)The ecosystem service function was continuously enhanced due to the increased of forest land,and the land cover condition index was positively proportional to the quality of the ecological environment.(3)The transferred of dry land and other forest land into forest land was the main reason for improved the ecological environment,while the main drove factor leaded to deterioration of ecological environment was the transferred of forest land into dry land and urban land.The overall ecological effect of Guanshanhu District from 2010 to 2020 showed a positive development.
作者
魏媛
朱玉丹
WEI Yuan;ZHU Yudan(School of Management Science and Engineering,Guizhou University of Finance and Economics,Guiyang Guizhou 550025;School of Public Administration,Guizhou University of Finance and Economics,Guiyang Guizhou 550025)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2023年第2期257-262,267,共7页
Environmental Pollution & Control
基金
国家商务部联合研究项目(No.2016SWBZD12)
贵州财经大学2021年度在校学生科研项目(No.2021ZXSY56)。
关键词
土地利用
时空演变
生态效应
观山湖区
喀斯特城市
land use
spatiotemporal evolution
ecological effect
Guanshanhu District
Karst cities
