应用生态学报2011，Vol.22Issue(1)：171-180,10.
快速城市化地区景观格局梯度动态及其城乡融合区特征——以广州市番禺区为例
Landscape pattern gradient dynamics and desakota features in rapid urbanization area: A case study in Panyu of Guangzhou
摘要
Abstract
In order to understand the landscape pattern gradient dynamics and desakota features in rapid urbanization area, this paper took the rapidly urbanizing Panyu District of Guangzhou City as a case, and analyzed its land use and land cover data, based on four Landsat TM images from 1990 to 2008. With the combination of gradient analysis and landscape pattern analysis, and by using the landscape indices in .both class and landscape scales, the spatial dynamics and desakota feature of this rapidly urbanizing district were quantified. In the study district, there was a significant change in the landscape pattern, and a typical desakota feature presented along buffer gradient zones. Urban landscape increased and expanded annually, accompanied with serious fragmentation of agricultural landscape. The indices patch density, contagion, and landscape diversity, etc. , changed regularly in the urbanization gradient, and the peak of landscape indices appeared in the gradient zone of 4-6 km away from the urban center. The landscape patterns at time series also reflected the differences among the dynamics in different gradient zones. The landscape pattern in desakota region was characterized by complex patch shape, high landscape diversity and fragmentation, and remarkable landscape dynamics. The peaks of landscape indices spread from the urban center to border areas, and desakota region was expanding gradually. The general trend of spatiotemporal dynamics in desakota region and its driving forces were discussed, which could be benefit to the regional land use policy-making and sustainable development planning.关键词
城市化/景观格局/梯度分析/城乡融合区/缓冲区/广州市番禺区分类
生物科学引用本文复制引用
俞龙生,符以福,喻怀义,李志琴..快速城市化地区景观格局梯度动态及其城乡融合区特征——以广州市番禺区为例[J].应用生态学报,2011,22(1):171-180,10.基金项目
国家自然科学基金重点项目(U0633002)、广州市环境保护局项目和广州市科研条件建设项目资助. （U0633002）
