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Due to the increasingly serious ecological degradation of offshore systems, the study on offshore water quality health has attracted more and more attention of the researchers and decision-makers. In this paper, water quality health assessment of offshore area in north branch of the Yangtze River Estuary from July 2006 to January 2007 was studied by fuzzy comprehensive evaluation method. The water...
Given a description of city environment of Zhuzhou from the geochemical and geological environment, the author carried out further research on city ecological geochemistry and discussed the pollution of soil heavy metal through correlations analysis, R-cluster analysis and classified statistic of parent rock.
An environmental impact method based on numerical simulation is proposed and the assessment of environmental impact caused by dam-break is gained. According to the dam-break flood simulation results, the routing process of dam-break flood is concluded. Then the environmental risk evaluation model is built based on the obtained hydraulic factors. Qing Linjing reservoir located in Shenzhen of China...
China is a great agricultural country. Reasonable development and utilization of rural energy is related to Peasant's human production and life and improvement of rural eco-environment. Because lack of energy is serious in recent years. China strengthened study on biogas technology and got rich findings. But there is relatively backward in extended application of biogas technology. Therefore,this...
The purpose of this paper is to establish an evaluation system to estimate the water ecosystem services in the Songhua River Basin. According to the MA's classification, this paper groups water ecosystem services into four categories comprised of provisioning, regulating, cultural and supporting. On the basis, the paper assesses the sixteen important significant indexes for the Songhua River Basin...
A centralized wastewater treatment system has always been regarded as a successful approach during the last century. However, the transfer of this highly water-, energy- and cost-consuming system, and "end-of-pipe" technology to developing countries like China has been proved to be extremely limited and not always feasible. Decentralized water management based on ecological sanitation (EcoSan)...
This paper mainly studied the characteristics of pollutants removal by ecological floating-bed for Linjiang River which was one of the heavily polluted branch rivers in Three-Gorges reservoir area. Ecological floating-bed employed ceramisite as the substrate. The removal effects of Total Nitrogen (TN), Total Phosphorus (TP) and Chemical Oxygen Demand (COD) and purification characteristics of floating-bed...
Zu Shan virgin forest park, one of the most valuable virgin forest park in China, possesses a particular natural resource. It has not only granitic geomorphy, but also is a rare virgin forest park in the north of our country. It causes more and more attention of tourists now. Natural resources and the humanities environment should be fully utilized in its exploitation, for maintaining long-term stability...
In this work, the pollution characters of phosphorus in the two lakes are discussed. The average concentrations of TDP, DRP and DOP in the Wuliangsuhai Lake were higher than those of the Daihai Lake. The DOP concentrations account for not less than 60% of the total dissolved phosphorus (TDP) and the DOP pools in the overlying water of the two lakes are of 12t and 10t respectively. The contents of...
Soil samples of 0-15cm from 9 sampling sites including different functional zones and different greening types of Shanghai, China were collected and analyzed. The results showed the average concentration of Cu, Pb, Zn and Cd in soil of shanghai were up to 42.33,169.58,49.06, and 0.2460mg/kg, respectively, which were much higher than their natural background values. Among the functional zones and the...
In this paper, wet deposition of nitrogen in a small watershed of the Three Gorges Reservoir Area (TGRA) was investigated from 2004 to 2008. These results indicated that average TN concentration in rainwater was 2.02 mg L-1, which exceeded the threshold of eutrophication. TN concentrations were higher in the dry season than that in the wet season, but the wet season was the key period for N deposition...
The Yangtse delta area is one of the most rapidly developing areas in China. There are mega-cities like Nanjing and the surrounding urban areas of different sizes. As a traditional historical and industrial city, Nanjing city was investigated for heavy metals in its soil. Based on spatial characteristic of Nanjing City, 12 samples were regarded as descriptions of different function zone in urban area...
Capital Economic Circle that is located in north of China belongs to water resources shortage regions. The per capita water of it is only 1/7 of the per capita water of the whole country, and 1/30 of the per capita water of the whole world. Thus water resources problems become one of the key factors that restrict regional development. According to the analysis of water resources situation in Capital...
The increasing different stress caused by human activities induced changes in Tianjin Binhai New Area intertidal wetlands recent years. To find out whether the ecosystem health status of the wetlands in this area has been changed correspondingly, data of macrobentho abundance and biomass of 20 stations, both in May and August 2007 were applied, and multiple ecological indicators of different levels...
Cumulative impacts of productive enterprises are an increasingly serious problem in coastal areas. By analyzing the industrial structure during the last few decades in Dalian, China, we conclude there are five main sources of cumulative impacts: industrial enterprises, domestic sewage, agriculture, coastal engineering and marine aquaculture. According to the cumulative ecological effect causation...
A water environment security assessing system is constructed to respect the water environment security situation on pollution source, water quality, and ecology along Luan River to Tianjin Diversion Project. The model for assessment is proposed based on multi-hierarchy fuzzy theory. The corresponding assessment indexes, quantitative standards and weight functions are established. The system and method...
Given that the urban area is a complex ecosystem consisted of natural, societal and economic entities, urban ecosystem health evaluation is necessary for the scientific decision-making and proper ecological restoration. In this paper, the framework and methodology of urban ecosystem health evaluation based on emergy are proposed. The system of indices is developed including vigor, structure, resilience,...
The ecological footprint (EF) analysis is a quantitative method to assess the sustainability of regional development. On the basis of the theories and methodology of EF, the procedure and the relevant models were developed for estimating the cumulative changes of ecological capacity caused by sea reclamation. And then they were applied to the case study of Xiamen Western Bay based on the calculation...
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