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Suspended matters have a significant role on the overlying water. Nutrients and heavy metal released from sediments were an important source for lake eutrophication and pollution, especially for the shallow lakes. In this paper, HJ-1A/1B charge Coupled Device (CCD) data was collected to generate the Total suspended matter (TSM) concentration map of Poyang lake. Gaseous absorption and Rayleigh scattering...
Lake eutrophication, a serious environmental issue in the world, especially in recent years. In Lake Yangzonghai, a plateau deepwater lake in China, the anthropogenic disturbances have increased the eutropication, while people has not as yet known the effects and the main contributors of this increase. Data about the eutrophication development of the lake in the past 6 years were presented in this...
The main pollutions of Xiangshan Harbor were inorganic nitrogen and inorganic phosphorus. The annual average value of inorganic nitrogen was 0.594 mg.dm-3, the lowest value was in spring (0.194 mg.dm-3), and the highest was in winter (2.212 mg.dm-3). The annual changing trend of inorganic nitrogen was winter>autumn>summer>spring. The overall level of chemical oxygen demand was not high, the...
Bio-retention was regarded as one of the effective control measure of the urban non-point pollution. And the build and study of the bio-retention was very seldom presented in China. Based on the characteristic of the rainwater runoff in Beijing, we constructed the bio-retention system in this study. The nutrients were selected to analyze the retention conditions and the effect of pollutants removing...
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...
Identification of water quality conditions in a river system based on limited observations is an essential task for meeting the goals of environmental management. Various classification methods have been used for water quality estimation. However, a discrepancy frequently arises from the lack of a clear distinction between each water utilization mode, the uncertainty in the quality criteria employed...
Mangroves are a diverse group of unrelated trees, palms, shrubs, vines and ferns that share a common ability to live in waterlogged saline soils subjected to regular flooding Mangroves are functioning as buffer between sea water and ground water. They are highly specialized plants that have developed unusual adaptations to the unique environmental conditions in which they are found. The wastewater...
The sedimentary environment's change will be recorded in the sediments, which can be manifested by the variation of the sediments' physicochemical features. To study the trophic evolution and heavy metals pollution processes, the sedimentary geochemical properties of the core Huoshaohei (HSH) sediments, such as grain size, nutrients, heavy metals, etc, are analyzed. The nutrients in the sediments...
The aim of this study was to assess the effects of nutrient and other environmental factors on phytoplankton community composition and the density of colonial cyanobacteria along the gradients of total nitrogen (TN) to total phosphorus (TP) ratios. Fifteen urban eutrophic lakes with different nutrients concentrations were sampled on a bimonthly basis for two years. In total, the absolutely dominance...
Rainstorms can flush large amounts of nonpoint source (NPS) pollution from land sources into water bodies, threatening water supply. On the basis of rainfall events monitoring data, the runoff NPS pollution dynamics were assessed and NPS pollution loads were quantified in the Shaojiagou Stream, a tributary of Shitoukoumen Reservoir. Based on two complete rainfall events data, the average NPS pollution...
Water quality stochastic assessment based on Bayes is proposed in this paper. It is applied to assess monthly water-quality monitoring data at the typical sections in Three Gorges Reservoir from the year 2004 to 2006. The typical sections locate at Huanglingmiao, Badong, Guandukou, Xiangxi and so on. The conclusions obtained are listed as follows: (1) Water quality in the reservoir is favorable, and...
Nutrients concentrations in surface and core sediments from Lake Nansihu were investigated. The results showed that sediments from Lake Nanyang had significantly higher TP concentrations than any other area of Lake Nansihu. Lake Dushan suffered from the highest TOC and TN content. Lake Zhaoyang had low TOC, TN and TP concentrations. The method of 137Cs dating was used to derive accumulation rates...
Sewage discharge creates a serious environmental pollution in water resources. This is the one of the biggest pollution problem in India. The rapid growths of the population, the technological and industrial boom have brought enormous problems and degradation of the environment. Effective collection and treatment of municipal wastewater is a critical problem in a fast developing country like India...
Nutrients run-off from land causes environmental problem due to the eutrophication of rivers, lakes or reservoirs. These run-off are considered to affect not only water quality but sea bottom soil status in enclosed bay which has little exchange of sea water to and from outer sea. This study describes estimation of the load of total nitrogen and total phosphorus in Ago bay and its watershed which...
The Kurshiu Marios Lagoon gathers water from the area of 100 458 sq. kilometers. Every year 14–33 cubic kilometers of fresh water or about 5% of the inflow of all rivers flow into the Baltic Sea through the Klaipėda Strait. Together with the river water the lagoon receives industrial and municipal sewage. A large amount of fertilizers and pesticides used in agriculture flowed into the lagoon as well...
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