向家坝水电工程影响下区域土地利用及景观格局变化  

Land use/cover and landscape pattern changes under influence of Xiangjiaba Hydropower Station

作　　者：王维琛 蔡宴朋[1,2] 孙炼 杨薇 易雨君[1,2] 徐俏 WANG Weichen;CAI Yanpeng;SUN Lian;YANG Wei;YI Yujun;XU Qiao(State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,China;Beijing Engineering Research Center for Watershed Environmental Restoration&Integrated Ecological Regulation,Beijing 100875,China)

机构地区：[1]北京师范大学水环境模拟国家重点实验室,北京100875 [2]北京市流域环境生态修复与综合调控工程技术研究中心,北京100875

出　　处：《南水北调与水利科技》2018年第5期77-84,共8页South-to-North Water Transfers and Water Science & Technology

基　　金：国家重点研发计划(2016YFC0502209);国家自然科学基金(51522901);中央高校基本科研业务费专项资金~~

摘　　要：为研究向家坝水电工程建设对周围区域土地利用和景观格局变化的影响,本研究采用面向对象分类方法对水电站建设前(2006)与建设后(2017)两个时期的研究区遥感影像进行土地利用和景观格局变化分析,并以2006年为基准年,采用CLUE-S模型对研究区2017年"自然发展状态"下土地利用进行模拟,与2017年实际情形进行对比分析。研究结果表明:(1)2006-2017年间,在水电站外部工程和社会发展的双重作用下,水体面积大幅度增加,裸地得到开发利用,建筑区扩张,林地和耕地减少较多;(2)相较于"自然发展状态",水电工程影响下的建筑区面积略有下降,园地/草地面积下降且与林地之间交叉分布增多;(3)相较于"自然发展状态",水电工程影响下研究区景观格局变化表现出不同的特点:景观水平上,自然发展对研究区整体的聚集作用减弱;类型水平上,研究区景观格局呈现出三种趋势:耕地与园地/草地呈增强趋势,建筑区与裸地呈延缓趋势,林地呈相反趋势。In order to analyze the influence of Xiangjiaba hydropower project on land use and landscape changes in the peripheral region,we applied the object-oriented classification method to extract the land use types from the Landsat images of 2006 and 2017,and analyzed the landscape pattern changes around Xiangjiaba hydropower station.Then,we used CLUE-S model to simulate the land use and landscape changes in 2017 in the condition of natural development without the hydropower project.The main conclusions are as follows:from 2006 to 2017,the land types of the study area were seriously affected by both social development and the hydropower project.The water area has increased significantly;bare land has been utilized;construction area has expanded;forest and farmland area has decreased a lot.Compared with the situation in the natural development condition,under the influence of the hydropower project,the construction area is slightly smaller,and the garden/grass land area is smaller with more cross-distribution with forest land.The landscape pattern presented different trends:enhancement of farmland and garden/grassland,delayed development of construction and bare land,and opposite development of forest land.

关 键 词：土地利用/覆盖变化 面向对象分类 景观格局变化 CLUE-S模拟 水电工程 

分 类 号：X22[环境科学与工程—环境科学]