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The water system of Fen River in Shanxi province has upstream, midstream and downstream three sections, which are separately located in Jingyou, Jiexiu, Xiaodian, Hongtong, Linfen and Hejin, six sampling points are disposed there for the sake of collecting the samples of the filtered water and suspended matter, and measuring heavy metal contents. The measurement results show that heavy metal exist...
Wheat straw is a largely available and cheap agricultural residue. Field burning is the major conventional practice for removing wheat straw, but it increases the air pollution and consequently affects the public health. China has already banned open field burning. The aim of the present work was to investigate the suitability of wheat straw as a raw material for particleboard. Polyisocyanate resin...
Baoding city locates on northwestward of the North China Plain, middle section of the Taihang Mountain which is a typical city on groundwater developing in China. Authors summarize the history of groundwater use and contributions of groundwater, analyze environmental geological issues caused by over-exploitation of urban groundwater which are similar with other water-shortage cities. Main environmental...
Filamentous fungal strains were isolated from the leaves and fruits of Camellia oleifera with the anthracnose disease. The pathogenecity was tested following Koch's postulates. Our analyses identified that all 18 isolated strains were pathogenic to Camellia oleifera. The molecular analysis of the internal transcribed spacer regions of the most virulent isolate confirmed that it belonged to Colletotrichum...
Land demand is one of the key elements of Shanghai development, and wetland or tidal flat exploitation is the main way to land increase in Shanghai. Here comes an issue of the double-win between wetland exploitation and protection. A compensation mechanism for wetland loss is established in this paper, and a fuzzy decision-making chain is put forward with the example of the wetland in Shanghai.
In this paper, monthly averaged API index data from August 2006 to September 2009 of the 86 key environmental protection cities in China were broken down into several fields and their time functions by the Empirical Orthogonal Function (EOF) method, and the temporal and spatial distribution characteristics of API were analyzed. It was shown that the regional differences of API were significant among...
AVS (Acid-volatile sulfide) and SEM (Simultaneously Extracted Metals) profiles are presented for a 100cm-sediment core taken in Foshan Waterway, a typical municipal polluted river in PRD, China. The purpose of this study was to reveal the vertical distribution of AVS and toxicity of heavy metals in deep sediment in the heavily polluted area. Results of ΣSEM5-AVS obtained in the current work indicated...
To uncover the biotic influence of the internal phosphorus release in the sediment of Lake Xuanwu, colony-counting method of flat-panel culture was used to analysis the amount and categories of phosphorus-degrading microorganism. The result showed that there were phosphorus-degrading microorganisms in the sediments of the Lake Xuanwu and most them were inorganic phosphorus-degrading microorganisms,...
Pesticides are widely used in China for crop protection. Econometric analysis showed the magnitude of the chronic health effects and health costs to be directly related to pesticide exposure, and accumulative pesticides has led to serious pollution to the environment. This study was conducted on a random sample of 150 rice farming households to collect information on their knowledge, attitude, and...
Shijiazhuang has been in visibility impairment situation for many years but with less studied. In this research, we collected the meteorology data and sampled PM10 to measure the mass concentration and total carbon content, in odor to discuss the possible relationship with visibility. The results show that the annually average visibility declines to 10.2-12.7km and monthly average visibility presents...
The Sanjiang Plain is the largest low-altitudinal swampy plain in China where has been strongly affected by human activities particularly the conversion of marsh to cropland. Four plots of Carex lasiocarpa marsh, Deyeuxia angustifolia marsh, rice field and dryland were selected in this study to evaluate the effect of land-use change on soil respiration. Results showed that the seasonal changes of...
The shallow city river of Baoyang located in China had been eutrophicating with nutrients from domestic sewages for many years. A heavy bloom of Microcystis.aeruginosa in Baoyang River was recorded in 2004 and microcystin-RR (MCRR), the most popular cyanobacterial hepatotoxin microcystins in China, could be detected in the river in the next several years in the filtered waters. To determine the environmental...
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.
Shells are waste products from mariculture that presents a major disposal problem in coastal regions in China. While based on previous researches, shells can be used as carrier in Aerobic Bio-filter (ABF). It was investigated in present research that the role of shell for wastewater pH adjustment and alkalinity releasing through static experiment. Under the wastewater and shell volume ratio of 9:1...
The paper focuses on the pressure of China's consumption on resources and environment with the economic development. The paper shows that an increase in consumer demand places more pressure on the environment, there are distinct differences of economic and social circumstances from regions to regions; and when looking at the social formation, there is typical dual economic and social structure in...
A newly isolated moderate thermophilic strain 1-7 producing alkaline and thermostable lipase previously was identified as Acinetobacter calcoaceticus, which was isolated from the soil collected from bay of Bohai in China. The lipase showed maximum activity at pH 9.0 and high thermostability. The lipase from Acinetobacter calcoaceticus 1-7 was purified by ammonium sulfate precipitation, ion exchange...
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...
An investigation was conducted on the characteristics and leaching behavior of heavy metals from municipal solid wastes incineration (MSWI) fly ash in Chongqing, China. Results indicated that the average particle size of the fly ash was 36.4 μm, the large particles were formed mainly by small particles' adsorption or aggregation. The total content of the main heavy metals was about 1.04% of the fly...
Xinjiang is the emission region of sand-dust aerosol as well as the region suffering the severest damage from sand-dust aerosol, whose urban environment especially suffers greater impact from the particles of sand-dust aerosol. The impact on urban environment in Xinjiang is mainly attributed to the sand-dust weather in the multiple sand-dust seasons. The variation trend is in conformity with that...
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