浏阳河流域土地利用景观动态及生态环境质量响应  

On Dynamics of Land Use Landscape and Response of Ecological Environment Quality in Liuyang River Basin

作　　者：曹善浩 曹秀婷 王志强 周宇航 房乐 CAO Shanhao;CAO Xiuting;WANG Zhiqiang;ZHOU Yuhang;FANG Le(School of Resources&Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Jiaxing Institute of Territorial Space Planning,Jiaxing 314050,China;Yangtze River Delta(Jiaxing)Planning&Design Group Co.,Ltd.,Jiaxing 314001,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]嘉兴市国土空间规划研究有限公司,浙江嘉兴314050 [3]长三角(嘉兴)城乡建设设计集团有限公司,浙江嘉兴314001

出　　处：《湖南科技大学学报（自然科学版）》2023年第2期19-26,共8页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南省水利科技项目资助(湘水科计[2017]230-12)。

摘　　要：为研究浏阳河流域的生态环境质量变化特征,在遥感和GIS技术支持下,利用1985年、2000年和2015年的遥感影像获取浏阳河流域内的土地利用/覆盖类型数据,应用景观生态学相关知识和土地利用转型的生态环境效应模型,揭示1985年—2015年浏阳河流域土地利用景观的空间格局和变化趋势,探讨该流域的生态环境质量变化及驱动机制.结果表明:(1)土地利用的整体变化特征表现为林地、草地面积缩减,耕地、人工表面面积增加;(2)生态环境质量空间分布东西差异大,总体特征是西部低,东部、南部高;(3)整体的生态环境质量指数从1985年的0.2924持续下降至2015年的0.2798,生态环境质量退化明显;(4)存在生态环境质量改善和退化2种过程,且退化过程大于改善过程,生态环境质量退化的主要因素包括林地转化为人工表面和林地转为耕地.In order to study the characteristics of the ecological environment quality change in the Liuyang River Basin,this paper uses remote sensing images in 1985,2000 and 2015 to obtain three-phase land use type data in the basin with the support of remote sensing and GIS technology,and applies the knowledge of landscape ecology and the ecological environment effect model of land use transition.It reveals the spatial pattern and change trend of the land use landscape in the Liuyang River Basin from 1985 to 2015,and discusses the changes in the ecological environment quality of the basin and its driving mechanism.Results show:(1)The characteristics of land use change in the watershed are characterized by the reduction of forest land and grassland area,and the increase of cultivated land and artificial surface area;(2)The spatial distribution of the ecological environmentsafety quality of the Liuyang River Basin is different from east to west.The spatial distribution is low in the west,high in the east and south;(3)The ecological environment quality index of the Liuyang River Basin continues to decline from 0.2924 in 1985 to 0.2798 in 2015,and the quality of the ecological environment is degrading;(4)There are two processes of ecological environment quality improvement and degradation in the Liuyang River Basin,and the effect of the degradation process is greater than the improvement process.The main factors of the ecological environment quality degradation are the conversion of forest land to artificial surface and forest land to cultivated land.

关 键 词：遥感 GIS 浏阳河流域 生态环境 退化 改善 

分 类 号：K909[历史地理—人文地理学] X144[环境科学与工程—环境科学]