摘要
以湘江流域4个时期的遥感影像数据及同期经济与社会发展数据为主要数据源,利用土地利用/覆被时空变化相关研究方法,分析湘江流域土地利用时空变化及其影响机制。结果表明:研究区土地利用综合程度指数由1995年的234.26持续提高到2010年的235.74,且区域不均衡性明显;耕地、林地及建设用地是导致研究区变化最为显著的用地类型;耕地的重心在向东偏南方向迁移,林地的重心在向西偏北方向迁移,建设用地的重心在向东偏北方向移动,移动速度均具有阶段性;城市化水平提高、人口增长、第二三产业的发展以及"退耕还林"工程的实施是研究区土地利用/覆被变化的主要驱动力。
Based on 4 periods of land sat TM image and social-economic data of the same period, the characteristics and mechanism of temporal and spatial variation of land use in Xiangjiang River basin were analyzed by employing research methods of temporal and spatial change of land use/cover. The results showed that： The land use comprehensive degree index of the study area increased from 234. 26 to 235.74 during 1995-2010, but it showed obviously regional imbalance; Cultivated land, forest land and construction land were the most significant land use types for the land use change. The gravity center of farmland moved to southeast, the gravity center of forest land shifted to northwest and the gravity center of construction land moved to northeast. The speed of these movements has a characteristic of stage. The main driving forces for land use change in the study area included urbanization level improvement, population growth and secondary and tertiary industry development as well as the implementation of the project of returning farmland to forest.
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2017年第5期179-187,共9页
Journal of Southwest Forestry University：Natural Sciences
基金
湖南省科技计划项目(2015SK2003)资助
衡阳市科技计划项目(2015KS02
2014KS21)资助
衡阳市社会科学基金项目(2016D038)资助
关键词
湘江流域
土地利用
影响因子
Xiangjiang River basin, land use, impact factors
