基于不透水面的粤港澳大湾区景观格局时空变化  

Spatiotemporal changes of landscape pattern using impervious surface in Guangdong-Hong Kong-Macao Greater Bay Area,China

作　　者：冯珊珊 樊风雷[1] FENG Shan-shan;FAN Feng-lei(School of Geography,South China Normal University,Guangzhou 510631,China）.)

机构地区：[1]华南师范大学地理科学学院,广州510631

出　　处：《应用生态学报》2018年第9期2907-2914,共8页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(41201432);华南师范大学研究生创新项目(2017LKXM027)资助~~

摘　　要：城市不透水面是反映城市化程度和城市环境质量的关键指标,基于不透水面研究城市景观格局演变具有重要的生态意义.利用遥感数据结合景观格局指数探讨了粤港澳大湾区2006—:2016年城市不透水面时空演变状况,分析了基于不透水面的景观格局变化规律.结果表明,2006—2016年,粤港澳大湾区不透水面扩张显著,总面积从12127.69 km2增至20188.87km2年增长速率高达806.12 km2·a-1,并且在珠江东、西两岸分布形成广佛、深莞高密度聚集区.总体上,湾区内不透水面斑块数量明显增多,斑块密度和边缘密度变大,不透水面的优势度越来越突出,不透水面斑块形状趋复杂化,聚集程度降低,整体景观格局呈无序、破碎化、不规则化的趋势.湾区内各城市不透水面的景观格局演变具有明显差异,其中,澳门、香港的不透水面连通性最强,城市景观趋于稳定性、规则化、聚集性;惠州、江门市的不透水面斑块形状复杂,城市景观趋于破碎化.Impervious surface is a key indicator for urbanization degree and the quality of urban environment. It is of great ecological significance to study the evolution of urban landscape based on impervious surface. We explored the spatiotemporal changes of impervious surface landscape pattern in Guangdong-Hong Kong-Macao Greater Bay Area from 2006 to 2016 using multi-temporal Landsat images based on landscape pattern index. The results showed that the impervious surface area（ISA） significantly increased in Guangdong-Hong Kong-Macao Greater Bay Area from 12127.69 km^2 in 2006 to 20188.87 km^2 in 2016, with an annual growth rate of 806.12 km^2. High-density ISA was distributed in Guangzhou-Foshan and Shenzhen-Dongguan districts on the east and west of the Pearl River, respectively. In general, patch numbers, patch density, and edge density, as well as shape complexity and its fragmentation kept increasing during the past decade. The landscape pattern tended to be disordered, fragmented, and irregular. Moreover, the difference of impervious surface landscape pattern is obvious between cities. The areas with highest connectivity, stability and regularization were distributed in Hong Kong and Macao, while the landscape pattern in Huizhou and Jiangmen trended to be fragmentized and complex.

关 键 词：遥感 不透水面 景观格局 城市景观 粤港澳大湾区 

分 类 号：P901[天文地球—自然地理学] TU984.1[建筑科学—城市规划与设计]