东莞市近30年不透水面时空演变研究  

The Evolution of Impervious Surface during the Past Three Decades in Dongguan

作　　者：黄燕[1] 陈明辉[1] 谢卓君[2] 

机构地区：[1]东莞市地理信息与规划编制研究中心 [2]广州城市信息研究所有限公司

出　　处：《城市观察》2017年第3期61-70,共10页Urban Insight

摘　　要：城市不透水面作为城市化生态影响评价的重要因素受到社会的广泛关注,掌握不透水面的空间分布和动态变化信息,对生态环境保护和"海绵城市"建设具有重要的意义。本研究以东莞市为研究区,选取1988年、1994年、2005年和2015年四期TM/OLI遥感影像作为数据源,采用不透水面指数法提取研究区的不透水面信息,并结合景观格局指数分析探究东莞市近30年不透水面分布的时空演变规律。研究结果表明:ENDISI指数法可以有效消除山体阴影噪音信息引起的不透水面信息误判,具有较高的提取精度,能较好地反映城市扩张趋势,可为城市内涝治理和"海绵城市"建设提供数据基础;东莞市近30年来不透水面景观格局变化极其显著,面积增长近25.4倍,呈"主-副多中心、轴线延伸式"快速发展,不透水面优势度大幅提升,其连通性和聚集度在1994年之后逐渐加强。Impervious surfaces receive extensive social attention because of its importance to evaluation of ecological impact of urbanization. Its spatial distribution and dynamic variation is key to the protection of ecological environment and the construction of sponge cities. Taking the city of Dongguan as an example, we select TM/OLI remote-sensing images from 1988, 1994, 2005 and 2015 as our data sources, extract information of impervious surfaces through index and analyze its rule of evolvement during the past three decades. Results show that the ENDISI index method is more precise in reflecting the trend of urban expansion, preventing urban rainstorm disasters, and providing basic data for the construction of sponge cities. The impervious surface landscape patterns in Dongguan has improved remarkably by 25.4 times and been experiencing multi-core rapid development, with better connectivity and convergence since 1994.

关 键 词：不透水面 景观格局 时空演变 东莞市 

分 类 号：P901[天文地球—自然地理学]