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China currently faces a water resource sustainability problem which is likely to worsen into the future. The Chinese government is attempting to address this problem through legislative action, but faces severe challenges in delivering its high ambitions. The key challenges revolve around the need to balance water availability with the need to feed a growing population under a changing climate and...
In many river basins in China, flood and drought coexist. Therefore, there is a strong demand to rationally utilize the flood waters. Water resources compensation characteristics analysis is the foundation of utilization of flood. In this paper, set pair analysis, a new uncertainty analysis method, was used to analyze the dry and wet compensation characteristics of the water resources parameters in...
Pressure index of agricultural water resources(PIAWR) is the ratio of the amount of agricultural water use and 40 percent of total water resources. The PIAWR could reflect the status of pressure on agricultural water resources. The paper calculated the PIAWR at the municipal and regional scale in China using the pressure index model based on the statistical data of water resources in 2005. It was...
Taking the upstream of the Shule River Watershed, on the northeastern edge of the Qinghai-Tibetan Plateau in China as the study area, a primary analysis on the effects of influencing factors on the distribution of permafrost was carried out. Relationships between the ground temperatures of permafrost and the geographical and topographic factors longitude, latitude, elevation, slope and aspect were...
The assessment system for the water conservation is of vital significance to construct a water conservation society that is one of the most important strategies in the harmous development of social economy and ecological environment. According to the idea of ecological water footprint available, the evaluation system is established for the assessment of water conservation society based on water quality...
The increasing water demand directly results in the dwindling water supply in many cities of China. Water price plays an important role in the manage of urban water supply. The policy of laddered water price can reach the objective of water commodity pricing and establish the effective mechanisms with the core of water-saving, but it will face a practical problem due to for the lack of theoretical...
The research reveals the distribution and correlation of heavy metals in groundwater of sewage irrigation area in Guangdong province. 14 groundwater samples were collected in August 2008, and the groundwater samples were filtrated through 0.45 μm membranes and acidified in the field. Determinations of Cd, Cu, Zn, Pb, Ni, and Cr in all the samples were performed using ICP-OES, and determinations of...
Based on the Solow model, technological progress and capital input are divided, and an improved Solow model is established. This model is applied to calculate the contribution rate of all input factors to economic growth and to evaluate quantitatively the social benefit of water-saving agriculture in China from 1991 to 2005. It is concluded that the contribution rates of all input factors are obviously...
Natural gas is becoming a main source of town gas in China. It is difficult to supply natural gas by pipelines from gas fields to every city in China. To solve the problem, natural gas hydrate (NGH) technology is introduced in this paper. At the same time, NGH technology is compared with liquefied natural gas (LNG) technology and compressed natural gas (CNG) technology. We conclude that NGH technology...
The Three Gorges Project (TGP) is a vital project in the development and harnessing of the Yangtze River in China. The Three Gorges Reservoir region, while with serious soil erosion for a long time, is one of the typical regions whose ecological environment is very fragile. The objective of this study is to map the inter-annual spatial changing pattern of mean soil erosion and assess the effects of...
The maximum CODMn, TN and TP inlet permits under different water quality target were calculated and simulated, based on Honghu wetland protection and ecological restoration planning. The current pollution load and water environment capacity of the Lake Honghu was analyzed. The target reduction amounts in different planning periods were determined based on the current pollution load. It provided technical...
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