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The study on groundwater vulnerability is an effective technical measure for rational development and protection of groundwater resource. In the paper, according to the hydrogeology conditions of the Lincang Basin in Yunnan Province, USEPA's DRASTIC method was applied to evaluate the groundwater vulnerability of this area with the consideration of depth to the water table, Net recharge, aquifer material,...
Taking the crop lands around Xinjing village in the upstream reaches of the Bi River as study area, this paper measured the contents of four heavy metals (Pb, Zn, Cd and As), evaluated the pollution degree using the pollution index and interpolated their spatial distribution by Kriging method in ArcGIS. The results indicated: (1) only the content of Cd exceeded background levels of soils, which was...
The unrestrained exploitation of coal resources lead to severe environmental problems in resource-exhausted areas in China. The environmental pollution and ecological damage degree are the basis to the eco-environmental restoration, both to determine the scope and to calculate the investment. So in ecological damaged area, to evaluate the damage degree is more important than evaluate the quality....
Soil heavy metal pollution has increasing applied pressure on land resources with the intensive effects of local geochemistry or human activities in recent years. This investigation was conducted to understand the spatial variability of the soil heavy metal elements, to evaluate the relationship between heavy metals and their probable sources and to identify or forewarn the probable heavy metal contamination...
This paper summarized the regional environmental problems in China and analyzed the corresponding resolving methods and their limitation. After the brief introduction of the composition, structure, function and special features of the Regional Environmental Management Digital Integrated Technology, this work took the Beijing City digital map (1:50000) as the working basic map, chose a typical region...
Aiming at providing useful information for risk assessment of environmental pollution, soil remedy and decision making, the paper interprets the spatial variability of Cd in soil in the Tongling mining area, China, and analyzes the pollution by using a geostatistical method. The dataset of soil elements content is derived from the project of "Multi-Target Regional Geochemical Survey in Jianghuai...
Geographic information system (GIS) can deal with large quantity of data efficiently. Based on GIS, this paper researches the ambient air pollution and establishes dynamic databases of the atmospheric environment in Jiaozuo city. Through analyzing a plenty of spatial data systematically, this article establishes dynamic simulation models and the spatial analysis models on ambient air quality. The...
The main objective of this study was to construct and assess comparatively management scenarios in Zhangxi River watershed located in Zhejiang, China, applying the annualized agricultural nonpoint pollution source model (AnnAGNPS) integrating with ArcView GIS software. Parameter sensitivity analysis was performed, and those parameters that exerted a significant influence on the output variables were...
There have been a lot of researches on urban ash haze pollution and its formation mechanism. But after the ash haze, it has not been paid enough attention by the researchers whether the ash haze pollution could initiate the photochemical pollution in the situation in which the air pollution degree has not declined. This article takes Pearl River Delta as a study object, and focus on the possibility...
Basing on multi-source remote sensing data, statistical data, supporting of GIS technology, this study carried out the research on comprehensive evaluation of the ecological environment quality of resource-based city - Panzhihua City from five aspects which is biological abundance, vegetation coverage, water density, land degradation and pollution load. The results show that the quality of the overall...
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