国土资源遥感Issue(2)：124-129,6.
上海近十年来城市化及其生态环境变化的评估研究
Researches on Changes of Urbanization of Shanghai and its Ecologic Environment Based on MODIS Time Series in the Last Decade
摘要
Abstract
In this paper, some change detection methods were used for assessment of urbanization and ecosystem changes. The urbanization area index (UAI) derived from land cover was used to reflect the speed of urban expansion, while the fraction of vegetation cover ( FVC ) retrieved from NDVI was used to represent the status of urban ecologic environment. The NDVI time series were derived from MOD13Q1 by using an annual stacking approach. Land cover maps were retrieved from annual NDVI time series from 2000 to 2009. This paper focused on the assessment study of urbanization level and ecologic environment changes in Shanghai. The results indicate that:(1) the urban area of Shanghai increased continuously in the past 10 years; (2) the UAI increased by an annual average rate of more than 1.73％, with its peak value being 4.36％ during 2008 -2009; (3) on the whole, FVC decreased continuously over the past decade, while the FVC of the urban area increased slightly and the FVC of some islands and outer suburbs increased slightly too; (4) the urban ecologic environment of Shanghai became more and more “green” at the cost of decreased cropland and natural vegetation cover. The assessment of urbanization and ecosystem changes suggests that suburban ecosystem protection is an important and urgent problem and the government should implement more effective environmental management policies.关键词
年NDVI时间序列/植被覆盖率(FVC)/最小距离分类(MDC)/土地覆盖动态度/城市化面积指数(UAI)Key words
Annum NDVI time series/ FVC/ Minimum distance classifier/ Land cover dynamic degree/ Urbanization area index (UAI)分类
信息技术与安全科学引用本文复制引用
黎治华,高志强,高炜,施润和,刘朝顺..上海近十年来城市化及其生态环境变化的评估研究[J].国土资源遥感,2011,(2):124-129,6.基金项目
国家重点基础研究发展计划项目(编号:2010CB951603) （编号:2010CB951603）
上海市教育发展基金会晨光计划项目(编号:2008CG28) （编号:2008CG28）
中央高校基本科研业务费专项项目(编号:华东师范大学). （编号:华东师范大学）
