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Focus on major eco-environment problems in Dongjiangyuan area, the paper selected twelve evaluation indexes (including terrain, climate, soil, vegetation index, land use type, socio-economic data) were set up based on RS and GIS technology. Using 100 m×100 m real area as basic unit, the spatial principal components analysis method is apply to calculate the eco-environment synthesis exponent according...
Taihu Lake basin is among the most developed regions in China, and changes in land use and land-cover change were distinct in last two decades. The rapid economic growth and lagged measures in pollution control have resulted in serious environmental problems in this region. Using Landsat satellite imagery of different periods (1985, 1995, 2000, and 2005), we achieved the land use data in Taihu Lake...
Remote Sensing (RS) and Geographic Information System (GIS) are important technologies for the sustainable management of ecological environment. In this paper, Landuse information is obtained by integrating the maximum likelihood classification (MLC) and neural network classification (NNC) method, which can realize the automatic extraction and recognition of land-use in Beijing City from remote sensing...
Rapid urbanization and industrialization have been going with urban growth and pattern evolvement in relatively developed regions of China's coast. This paper presents an integrated study on the urban growth patterns of the area around Taihu Lake, China, by using Geographical Information Systems (GIS) and remote sensing. High-resolution Landsat TM data in 1985, 1995, 2000 and 2005, and socioeconomic...
Vulnerability assessment acquaints us with degree of risks in global-environmental-change context. Remote sensing (RS) and geographic information system (GIS) is seldom applied to assess comprehensive vulnerability as indispensable socioeconomic factors are hardly expressed by them. Thus we selected counties in Jiangxi Province as study area, calculated vulnerability index VI of them by aggregating...
On the basis of the hyperspectral data, the paper did research on the remote sensing monitoring of chlorophyll a and eutrophication of Chagan Lake using hyperspectral model put forward by Hongtao Duan (Northeast Institute of Geography and Agricultural Ecology). Based on the mature theory, the process of remote sensing was implemented by a system with the support of techniques of the second development...
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