The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
It is generally believed that the karst development, weak geotechnical property and rapid changes in hydrodynamic conditions of groundwater are the main factors to cause karst collapses, while we have insufficient understanding of the hydrochemical actions. Exploitation of groundwater has accelerated the process of partial water cycle, in addition that, water quality environment's changement such...
This study was undertaken in Danjiangkou reservoir and the upper reaches, where the SWAT model was used to analyze the space distribution of non-point source pollution. The land-use pattern was interpreted by Environment for Visualizing Images Software (ENVI). The runoff and the sediment data series from 2001 to 2006 were collected to calibrate the parameters and validate the model. The calculated...
Pollution environment has important influence to soil physical property, however, the method and theory of pollution soil research are not mature. The paper states chemical reaction with pollution solution, inducing dissolve and deposit effect, which is the immanent cause of physical mechanic property of soil. The soil samples of Dalian region have been soaked in sulphuric acid solution and sodium...
This paper investigated the spatial-temporal variations and pollution source of surface water quality by analyzing the data from 8 water quality monitoring stations along the middle and lower reaches of the Min River between 2003 and 2008. The results showed that surface water quality was worse in the middle reaches of the Min River than that in the lower reaches and its tributary. Seasonal and spatial...
Soil and water loss is an important source of water eutrophication. In this study, soil erosion were measured in the four types of cultivated lands (Paddy land, Terraced farmland, Sloping farmlands <; 25°, and Sloping farmlands ≥ 25°) in Xiaojiang River basin, Chongqing of China. In addition, water qualities were investigated in 5 reaches of Xiaojiang River (Qukou, Yanglu, Gaoyang, Huangshi, and...
Water pollution in Taihu Lake has become one of the most serious environmental problems that draws public attention and needs to be solved as soon as possible. It was well known that forest could play an important role to control soil & water erosion, uptake extra soil nutrients as well. However forest coverage is rather low and woodlands are extensively managed in the headwaters region. Thus...
The quarry and damaged mountain in peri-urban have an important influence to ecological environment. They have had a series of serious environmental-geological problems to the socio-economic development and urban modernization process, such as increased environmental pollution and soil erosion, destruction of landscape aesthetic, induced geological disasters, and had an impact on groundwater seepage...
Surface erosion is a serious environmental problem in land degradation caused to decrease in the lands agriculture value and increase in sediment and water pollution. In erosion and sediment studies, erosion types mapping is one of the most important and basic maps to determine the preference in soil conservation program. In this research, the aim is to evaluate some methods in providing soil surface...
A good numerical non-point source pollution model is an efficient tool for non-point source pollution management, which can be used to analyze the temporal and spatial rules of pollutant discharge. In this paper, SWAT model is adopted to estimate the contribution of non-point source pollution in the Xiangxi River watershed of Three Gorges Reservoir Area in China in 2002-2007a. With the predicted values...
Adsorptive non-point source pollution associated with soil erosion has brought big problems to water environment and land productivity. As the most important water source area of Hainan, the Songtao Reservoir Basin (SRB) has faced with a crisis of water contamination caused by land exploitation. The objectives of this study are: (1) to assess the soil erosion risk and adsorptive non-point source pollution...
The agriculture around Taihu Lake is highly developed, but a large amount of sand and organic matter is directly brought into Taihu Lake from farmland in rainy season and is seriously polluting the water quality of the lake. In order to make a quantitative analysis for the influence of organic matter to the water body of Taihu Lake, the area around Taihu Lake is divided into two land area of paddy...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.