湖泊科学2011，Vol.23Issue(4)：642-648,7.
基于土地利用动态变化的太湖地区景观生态风险评价
Landscape ecological risk assessment in the Taihu region based on land use change
摘要
Abstract
The quantitative analysis of the land use change and its transformation relationship in the Taihu region during 1990 -2008 was put forward, using CIS and RS technologies, based on the remote sensing data and land use data, taking the administrative division as the assessment units. The assessment model comprising a landscape disturbance index and a land use sensitivity index was established on the base of land use change and landscape perspective to assess the landscape ecological risk characteristics of temporal and spatial change in study area. The results showed that the distribution of ecological risk had higher associated with the intensity and pattern of land use change. As a whole, the landscape ecological risk had been rising in the past 18 years; the area of high ecological risk was expanding. Due to the physical characteristics and social economy, the spatial variation of landscape ecological risk was significant. The low risk areas distributed mainly in the hilly and mountainous areas, the medium risk areas was mainly in the agriculture developed plain area, and the higher and highest risk areas distributed at the economically developed areas around the lake. The sources of landscape ecological risks were different, and variable land use types also had different risks. The farmland and construction land were the main risk source of the whole region. As the regional development, the ecological risk from the water and woodland were increasing steadily.关键词
土地利用/景观/生态风险评价/太湖地区Key words
Land use change/ landscape/ ecological risk assessment/ Taihu region引用本文复制引用
许妍,高俊峰,高永年..基于土地利用动态变化的太湖地区景观生态风险评价[J].湖泊科学,2011,23(4):642-648,7.基金项目
国家水体污染控制与治理科技重大专项项目(2008ZX07101-014-01、2008ZX007526-007)和科技部基础性工作专项项目(2008CB418106)联合资助 （2008ZX07101-014-01、2008ZX007526-007）
