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In recent years, researchers pay increasingly attention on river ecological restoration at home and abroad. According to the practical situation of Tianjin Airport Economic Park river water environment and inter-external experiences, several ecological techniques, such as phytoremediation, artificial aeration and ecological riverbank, were adopted to river ecological restoration. And related operation...
Growing population and rapid economic development lead to increasing pollution loading and lowering water quality. Protection of water environments is our glory target; The key strategy is: combining management of the land-water system in catchment and realizing the quasi-non-pollution release in an as small as possible catchment area.”; developing the high technology for realizing this target in...
Seasonal characteristics of the total nitrogen TN), total phosphorus (TP) and other factors in the sediment and water in the Yuyuantan Lake were analyzed. Correlation among all forms of P was estimated considering the seasonal variations of TP. The result showed that the concentrations of TN and TP are lower in summer and higher in autumn. All nutritional indexes are much higher in the west of lake...
The contents and characteristics of ten heavy metals in surface sediments from Yangzonghai Lake in Yunnan, China were analyzed. Ecological risk index presented by Håkanson to assess the potential ecological risk of Yangzonghai Lake was utilized. The results showed that the average concentrations of titanium(Ti), manganese(Mn), zinc(Zn), vanadium(V), chromium(Cr), copper(Cu), nickel(Ni), cobalt(Co),...
On the base of character of quality and quantity of mine water, ant colony algorithm is applied to optimize the site of purification plant. Aiming to industry, irrigation of agriculture, water supply of ecologic and living rural and urban residents, setting the maximum of net yield water supply, environment efficiency and society overall efficiency as object functions, using the capacity of water...
So far many toxicologic studies are made earlier; we studied the acute toxicity estimation related to some specific identified freshwater zooplanktons of Paradip (Harbour City) area of Jagatsingpur District, Orissa, India which is situated on the bank of Mahanadi River. The study area is prone to heavy metal pollution because mineral based industries in relation to zinc, lead and cadmium are common...
Payment for watersheds services (PWS) is an important instrument of watersheds protection and management, which can transform fortune and reduce the inequity of environment and development between the upper reach and lower reach. Both government and market play a key role in the course. Based on case study of Jinhua River, the analysis on the payment mechanism and modes of environmental services and...
The papers depict application of Rapid Impact Assessment Matrix (RIAM), in evaluating the impacts of construction of new marina and enhance the beaching area. In order to have an integrated approach for the impact assessment, the methodology of RIAM was used. RIAM is ideally suited to all EIA where a multi-disciplinary team approach is used, as it allows for data from different sectors to be analyzed...
In this paper, the measured date of air environment quality, water environment quality, acoustic environment quality and solid wastes in the Kanas National Natural Heritage Site of China during different periods were compared, the main factors resulting in the tourist environment pollution were evaluated, and corresponding ecological design approach for controlling tourist environment pollution was...
Urban wetlands play a significant role in the sustainable development. But the effect of human action on urban wetlands has been expanded in greater scope and depth, which may cause the accelerated degeneration of urban wetlands seriously. Based on the historical data of land using maps, topographic maps and TM images of Wuhan from 1930s to 2005, which were through the Man-Machine Interaction in ArcGIS...
The utilization of rainwater is essential to improve ecological environment of sub-district, and is one of main approaches to achieve sustainable water resources.Taking rainwater collection and utilization of Beifang Garden district as an example in Fuxin city of northeast China, water quality analysis and water quantity balance calculations are completed, also the feasibility and necessity of rainwater...
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...
Wetland is a kind of land resources and also a kind of ecological environment, it play more important role in people daily lives. Wetland has the vital role in the ecosystem such as storage of water, transformation of nutrients, especially its water purification function, which has important economy and ecological value. The wetlands water purifies mainly aims at nitrogen and phosphorus which causes...
Based on the investigation and analysis of oilfields in different regional area of China, the character of micro-ecosystem including biotic and abiotic factors and its general influence to bioremediation of oil hydrocarbon polluted soils was investigated. And then, the microbial properties, especially the restriction by water and oil content were discussed and the bioremediation feasibility was revealed...
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...
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...
It is generally acknowledged that macroinvertebrates are good indicators of water quality in streams, as a number of taxa are sensitive to pollution and integrate their response to pollution over time. This fact has led some states (e.g., Maine) to incorporate macroinvertebrates in their water quality standards. To quantify the relationship between macroinvertebrates and urban land use, this study...
Baiyangdian is the largest wetland in north China, and plays an important role in many aspects such as climate regulation, biodiversity protection, flood control, and local fishery production etc. the research of this paper include the following four aspects: 1) The composition, current situation, and changing tendency of sub-systems that constructed the whole system. 2) Building up the system model...
A water balance model is established in this paper. The relationship between water requirement and lake ecosystem is built and reflected by the appropriate water level to protect lakes and wetlands. And some measures of controlling human management action with water limit are put forward by the example of the Baiyangdian Lake.
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