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1.
A study on quality of aquatic environment in Tumen River Area 总被引：3，自引：0，他引：3
ＡＳＴＵＤＹＯＮＱＵＡＬＩＴＹＯＦＡＱＵＡＴＩＣＥＮＶＩＲＯＮＭＥＮＴＩＮＴＵＭＥＮＲＩＶＥＲＡＲＥＡ①ＺｈｕＹａｎｍｉｎｇ（朱颜明）ＣｈａｎｇｃｈｕｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏｇｒａｐｈｙ,ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ,... 相似文献
2.
After the survey of pollution sources, a study on surface water quality assessment and forecast is given by means of grey
system method, fuzzy mathematical method and multiple-index method. Based on it, aquatic environment quality features, treatment
measures and environmental strategies of the area are proposed. The quality of aquatic environment of 5 rivers in the Tumen
River area is studied. The results show that the pollution of surface water is serious; water quality of most rivers is between
grade IV and V except the Hunchun River, being higher than grade IV standard; pollution levels of most rivers have been basically
controlled except the of Burhatong River, which is deteriorating gradually. Pollutants of the rivers are comparatively regular,
mainly are SS, COD, BOD, AR-OH, NH3-N. The main pollution trades are chemical fibre industry, pulp and paper making industry and mining industry. If the growth
rate of gross industrial product is higher than 25 percent under the encouraging-model of regional exploitation, the pollutants’
load will overtake the bearing capacity of aquatic environment. Thus some protection program against pollution must be worked
out in order to achieve the harmonious development of economy society and environment.
A project from “Studies on Earlier Stage of Regional Development” of the Chinese Academy of Sciences 相似文献
3.
The flux of land-based source pollutants from tumen river system entering the sea of Japan 总被引：1，自引：0，他引：1
Ｉ．ＩＮＴＲＯＤＵＣＴＩＯＮ“Ａｇｅｎｄａ２１”ｒｅｃｏｇｎｉｚｅｓｔｈｅｉｍｐｏｒｔａｎｃｅｏｆｌａｎｄｂａｓｅｄｓｏｕｒｃｅｐｏｌｕｔａｎｔｓｔｏｍａｒｉｎｅｐｏｌｕｔｉｏｎ．Ｃｏａｓｔａｌｗａｔｅｒｉｓｏｆｇｒｅａｔｓｉｇｎｉｆｉｃａｎｃｅ... 相似文献
4.
The influence of land-based source pollutants to marine ecological environment is principally in coastal or enclosed sea wates.
Flux of land-based source pollutants into the sea will be effected due to social and economic development in the Tumen River
basin. Pollutant type and primary pollution factor of the Tumen River in Northeast China is described by weighted coefficient
method in this paper. The results indicate that the river is organic pollution type and primary pollution factor is COD. Fresh
water fraction proves that the estuary is not affected by tide cycle. COD annual flux entering the Sea of Japan calculated
by zero-dimension model in 1993 was 90.50 × 103 tons. It is estimated with emission coefficient method that the COD will be 176.4 × 103 and 458.6 × 103 tons for the years of 2000 and 2010 respectively.
This work is sponored by the Open Fund of State Key Laboratory on Environmental Aquatic Chemistry. 相似文献
5.
ＷＡＴＥＲＱＵＡＬＩＴＹＡＮＡＬＹＳＩＳＡＮＤＡＳＳＥＳＳＭＥＮＴＯＦＲＩＶＥＲＳＩＮＪＩＬＩＮＰＲＯＶＩＮＣＥＯＦＣＨＩＮＡ￥ＷａｎｇＪｕｎ（王俊）ＺｈａｏＢａｏｚｈｏｎｇ（赵宝中）（ＤｅｐｏｒｔｍｅｎｔｏｆＥｎｖｉｒｏｎｍｅｎｔＳｃｉｅｎｃｅ，Ｎ... 相似文献
6.
ＴＨＥ ＤＥＶＥＬＯＰＭＥＮＴ ＯＦ ＴＨＥ ＴＵＭＥＮ ＲＩＶＥＲＡＮＤ ＴＨＥ ＥＣＯＮＯＭＩＣ ＧＥＯＧＲＡＰＨＩＣＡＬ ＢＡＣＫＧＲＯＵＮＤ ＯＦ ＩＴＳ ＨＩＮＴＥＲＬＡＮＤ ＷａｎｇＲｏｎｇｆｅｎ（王荣芬）；ＬｉＷｅｉ（李为）（Ｃｈａｎｇ... 相似文献
7.
Water quality model establishment for middle and lower reaches of Hanshui River,China 总被引：2，自引：1，他引：1
With the development of industry and agriculture,nitrogen,phosphorus and other nutrients in the Hanshui River greatly increase and eutrophication has become an important threat to the water quality of the Hanshui River,especially in the middle and lower reaches.The primary objective of this study was to establish the water quality model for the middle and lower reaches of the Hanshui River based on the model of MIKE 11.The main pollutants migration and transformation process could be simulated using the water quality model.The rainfall-runoff model,hy-drodynamic model and water quality model were established using MIKE 11.The pollutants,such as chemical oxygen demand(COD),biochemical oxygen demand(BOD),ammonia nitrogen,nitrate nitrogen,phosphorus,dissolved oxy-gen(DO),were simulated and predicted using the above three models.A set of methods computing non-point source pollution load of the Hanshui River Basin was proposed in this study.The simulated and observed values of COD,BOD5,ammonia,nitrate,DO,and total phosphorus were compared after the parameter calibration of the water quality model.The simulated and observed results match better,thus the model can be used to predict water quality in the fu-ture for the Hanshui River.The pollution trend could be predicted using the water quality model according pollution load generation.It is helpful for government to take effective measures to prevent the water bloom and protect water quality in the river. 相似文献
8.
１INTRODUCTIONUrbanizationisaprocessthatallowspopulationandindustrytohighlyconcentrate．Itisinevitablethatthiskindofprocesswillhavedeepimpactsoneco－environment．TheTumenRiverisaninternationalwaterbody．ScopeoftheTumenRiverBasin（TRB）canbedefinedas（only 相似文献
9.
Wu Guoyuan 《中国海洋湖沼学报》1984,2(2):194-208
Using the most recent hydrologic and water quality data issued by U.S. Geological Survey, this paper deals with the pollution
of the lower Mississippi River for the 1978–1981 water years and compares the water pollution of this period with that of
the 1973–1977 water years. The water quality of the lower Mississippi River has not been evaluated comprehensively. This paper
utilizes the Cartesian coordinates approach in an appraisal of water quality of the Mississippi River for the first time.
Thus, it provides a foundation for the further comprehensive evaluation of environmental quality and research of water resources. 相似文献
10.
Rivers in the Liaohe River Estuary area have been seriously polluted by discharges of wastewater containing petroleum pollutants and nutrients. In this paper, The Enhanced Stream Water Quality Model (QUAL2K) and its revised model as well as One-dimensional Tide Mean Model (1D model) were applied to predict and assess the water quality of the tidal river reach of the Liaohe River Estuary. Dissolved oxygen (DO), biochemical oxygen demand (BOD5), ammonia nitrogen (NH3-N) and total phosphorus (TP) were chosen as water quality indices in the two model simulations. The modelled results show that the major reasons for degraded rivers remain petroleum and non-point source pollution. Tidal water also has a critical effect on the variation of water quality. The sensitivity analysis identifies that flow rate, point load and diffuse load are the most sensitive parameters for the four water quality indices in the revised QUAL2K simulation. Uncertainty analysis based on a Monte Carlo simulation gives the probability distribution of the four water quality indices at two locations (6.50 km and 44.84 km from the river mouth). The statistical outcomes indicate that the observed data fall within the 90% confidence intervals at all sites measured, and show that the revised QUAL2K gives better results in simulating the water quality of a tidal river. 相似文献
11.
ＷＡＴＥＲＲＥＳＯＵＲＣＥＳＴＲＡＮＳＦＯＲＭＡＴＩＯＮＡＮＤＷＡＴＥＲＱＵＡＬＩＴＹＶＡＲＩＡＴＩＯＮＩＮＴＨＥＵＲＵＭＱＩＲＩＶＥＲＢＡＳＩＮＱｕＹａｏｇｕａｎｇ（曲耀光）；ＬｕｏＨｏｎｇｚｈｅｎ（骆鸿珍）（ＬａｎｚｈｏｕＩｎｓｔｉｔｕｔｅｏｆＧ... 相似文献
12.
The average size of the sand of dune in the vicinity of Tumen River is 0.12～0.30 mm, its standard deviation is 0.45～0.99 φ and the frequency cumulative distribution curve is divided into the single peak and the double peak. The Ski of the single peak is negative and the double peak is positive. There are two different areas in the plot of the Ski versus σi* It is shown that the sedimentary environment of the dunes is neritic deposit by the expressions of the grain-size parameters. All of the characters show that the sand dunes in Estuary of Tumen River may be the dunes of sea facies which were changed again by weathering and fluvialaction. 相似文献
13.
14.
The Zhujiang (Pearl) River Delta is the rapid economic development region in China since the opening and reform door policy
was carried out in 1978. Being the rapid development of industry and city, the impact on the aquatic environmental quality
was significant. The pollution caused the water quality descended and the ecological system degraded, and also impeded the
economic development. The characteristics and problems of the aquatic environment are: the capacity of aquatic environment
is large but hasn’t been utilized rationally, the water quality is influenced by saline sea water and tide current, the main
pollutants are organic matter and the pollution is going heavier, the concentration of pollutants change seasonally. The countermeasures
of aquatic environmental protection are: carrying out the environmental functional regionalization and controlling the total
amount of pollutant discharge, revising the industrial structure and making a rational industrial arrangement, raising the
rate of waste water treatment and making a full assessment of the water conservancy project. 相似文献
15.
The spatial and seasonal pattern of macrozoobenthic structure and its relationship with environmental factors were studied from July 2006 to April 2008 in Mingzhu Lake, Chongming Island, Shanghai at the Changjiang River mouth. The congruences in water quality bioassessment based on diversity and biotic indices and using different taxonomic categories were also explored to find the best assessment method of water quality for the lake. All major structural characteristics of macrozoobenthic community, including species composition, abundance, biomass and four biomass-based diversity indices (Shannon’s diversity, Simpson’s diversity, Pielou’s evenness and Simpson’s evenness index) fluctuated significantly in season but in space. The above four abundance-based diversity indices plus abundance-based Margalef’s richness index did not display significant spatial variations; and significant seasonal differences were found in three indices only. Water temperature was the key environmental factor responsible for macrozoobenthic spatio-temporal distribution patterns. Water quality assessed by Shannon’s index (H a′) and biological pollution index (BPI) rather than the other four biotic indices were consistent with those by trophic state index (TSI). Results from chironomids and oligochaetes did not always agree to those from the whole community when H a′ or Hilsenhoff biotic index was applied to bioassessment. Therefore, combining multiple indices and avoiding a single taxonomic category to assess water quality are strongly recommended and in Mingzhu Lake using a mixture of H a′ and BPI will ensure the most effective investigation of water quality. Our results also show that the main structural characteristics of macrozoobenthic communities in the small lake may display consistent spatial patterns. 相似文献
16.
Semi-supervised support vector regression model for remote sensing water quality retrieving 总被引：1，自引：0，他引：1
This paper proposed a semi-supervised regression model with co-training algorithm based on support vector machine, which was
used for retrieving water quality variables from SPOT5 remote sensing data. The model consisted of two support vector regressors
(SVRs). Nonlinear relationship between water quality variables and SPOT5 spectrum was described by the two SVRs, and semi-supervised
co-training algorithm for the SVRs was established. The model was used for retrieving concentrations of four representative
pollution indicators—permanganate index (CODmn), ammonia nitrogen (NH3-N), chemical oxygen demand (COD) and dissolved oxygen (DO) of the Weihe River in Shaanxi Province, China. The spatial distribution
map for those variables over a part of the Weihe River was also produced. SVR can be used to implement any nonlinear mapping
readily, and semi-supervised learning can make use of both labeled and unlabeled samples. By integrating the two SVRs and
using semi-supervised learning, we provide an operational method when paired samples are limited. The results show that it
is much better than the multiple statistical regression method, and can provide the whole water pollution conditions for management
fast and can be extended to hyperspectral remote sensing applications. 相似文献
17.
Aijun WU 《世界地质(英文版)》2008,11(4)
According to "Environmental quality standard for soil" and using As, Cd, Cr, Cu, Hg, Ni, Pb, Zn elements as evaluation index, the author evaluated soil environmental quality in Xihe area of Shenyang. The results show that the soil in Xihe area is polluted rifely by heavy metal elements. The polluted areas are mainly distributed near the upstreams of Xihe River, Shenxin River and Shenliao irrigation canal. There exist large distinctions among the heavy metal elements to the pollution degree. Cd pollution area is the biggest and the most serious in pollution degree. 相似文献
18.
Aijun WU Liaoning Survey Academy of Geology Mineral Resources Shenyang China 《东北亚地学研究》2008,11(4):209-213
According to ＂Environmental quality standard for soil＂ and using As, Cd, Cr, Cu, Hg, Ni, Pb, Zn elements as evaluation index, the author evaluated soil environmental quality in Xihe area of Shenyang. The results show that the soil in Xihe area is polluted rifely by heavy metal elements. The polluted areas are mainly distributed near the upstreams of Xihe River, Shenxin River and Shenliao irrigation canal. There exist large distinctions among the heavy metal elements to the pollution degree. Cd pollution area is the biggest and the most serious in pollution degree. 相似文献
19.
EFFECTS OF SEASONALITY ON STREAMFLOW AND WATER QUALITY OF THE PINANG RIVER IN PENANG ISLAND, MALAYSIA 总被引：1，自引：0，他引：1
AhmadJailaniMuhamedYUNUS NobukazuNAKAGOSHI 《中国地理科学(英文版)》2004,14(2):153-161
For the Pinang River, originating in the western highlands of Penang Island, the nature, sources and extent of pollution were studied. The river water samples collected at five selected sites were analyzed for various physical and chemical parameters, namely temperature, DO, BOD, COD, SS, pH, ammoniac nitrogen (AN), and conductance. Long-term data of rainfall and temperature were analyzed to determine the seasonal variations of the streamflow.The streamflow during the dry season is extremely low compared to the wet season, thus concentrations of contaminants derived from point pollution source increase due to lack of rainfall and runoff events. On the contrary, in the predominantly urban and agricultural catchments, non-point pollution source increases during rainy season through seepage and runoff. Effects of seasonal variations consequently deterrnine the quantity and quality of the water parameters.The Jelutong River, the Dondang River and the Air Itam River carry the seepage from widely urban and residential areas to the main Pinang River systems. Water quality of the Pinang River at different points assessed by the water quality indices was compared. According to the quality indices during the study period, water quality in the upper reaches of the river is medium to good. It dwindled in the plains, due to the seepage from urban areas and discharges from the industrial and agricultural lands. 相似文献
20.
ＰＲＯＢＬＥＭＳＯＦＴＨＥＡＱＵＡＴＩＣＥＮＶＩＲＯＮＭＥＮＴＡＮＤＣＯＵＮＴＥＲＭＥＡＳＵＲＥＳＩＮＲＡＰＩＤＥＣＯＮＯＭＩＣＤＥＶＥＬＯＰＭＥＮＴＩＮＴＨＥＺＨＵＪＩＡＮＧＲＩＶＥＲＤＥＬＴＡ￥ＷｅｎＹａｎｍａｏ（温琰茂）；ＣｈｅｎｇＧｕｏｐｅｉ... 相似文献