基于可视域分析的景观生态恢复  

Visual landscape ecological restoration based on viewshed analysis

作　　者：刘韬[1] 彭明春[1] 王崇云[1] 

机构地区：[1]云南大学生态学与地植物学研究所,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2009年第S1期344-349,354,共7页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：以数字高程模型(DEM)和TM影像数据为基础,利用遥感和地理信息系统技术,对抚仙湖环湖公路进行空间可视域分析,将可视分析结果与植被、坡度、坡向和相对距离进行叠加,对环湖公路可视范围内的景观进行生态恢复,从缀块水平和景观水平上分析修复后景观格局的变化.结果表明:恢复后森林的面积和优势度增加,表明森林覆盖率增加;景观水平上,丰富度、多样性指数减少,蔓延度、散布与并列指数、丰富度指数增加,表明可视范围内破碎化程度降低,缀块间连通性提高,景观组成更加合理,景观美感度得到提升.Viewshed ananlysis based on DEM was conducted along the shore highway of the Fuxian Lake.Additionally,present landscape characters were interpreted by Landsat 7 TM remote sensing data.And ecological restoration were planned to improve landscape quality depending on vegetation types,terrain features,distance to the highway and the visibility.Present landscape pattern was compared with the landscape planned to restore.The results showed that the degree of fragmentation degraded and connectivity between the patches improved.Visual landscape along the shore enhances with the improvement of forest coverage.

关 键 词：抚仙湖 可视分析 生态恢复 景观格局 

分 类 号：X171.4[环境科学与工程—环境科学]