1990―2011年舟山群岛不透水面动态遥感分析

被引:6
作者
张晓萍 [1 ,2 ,3 ]
吕颖 [1 ]
张华国 [2 ]
李朝奎 [3 ]
机构
[1] 洛阳师范学院国土与旅游学院
[2] 国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室
[3] 湖南科技大学地理空间信息技术国家地方联合工程实验室
关键词
不透水面(IS); 遥感; 空间分析; 舟山群岛;
D O I
暂无
中图分类号
P237 [测绘遥感技术];
学科分类号
1404 ;
摘要
不透水面(impervious surfaces,IS)扩张加剧了海岛城市的淡水资源污染,是人类活动影响海岛生态系统脆弱性的重要因素之一。为分析舟山群岛IS动态变化,以覆盖舟山本岛及其附近岛屿同一季节的3期Landsat TM/ETM+遥感影像为主要数据源,通过监督分类获取研究区土地利用数据集,对非IS区域进行掩模运算;利用城市建成区IS与植被覆盖度呈负相关的关系,提取1990年、2000年及2011年的IS变化信息。结果表明,在过去20 a中研究区IS面积呈快速增加趋势,由1990年的47.96 km2(占研究区总面积的6.28%)增至2011年的114.40 km2(占比16.27%),新增IS主要分布在舟山本岛老城区周边及附近岛屿沿岸地带,且逐渐向沿岸低高程区域扩张。地形、政策、功能定位及交通状况等因素抑或是舟山群岛IS时空格局变化的主要驱动力。
引用
收藏
页码:178 / 185
页数:8
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