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1.
Such the geological hazards as landslide, rockfall, debris-flow and so on frequently occur in the Three Gorges Reservoir Area, so it is a very practical and immediate job to explore the mechanism caused the geological hazards and how to forecast and control the geological hazards. For this reason, this paper introduces the situation of the geological hazards occurred in the Three Gorges Reservoir Area and the major type and feature of the geological hazards occurred in Chongqing, and discusses the basic principle about the modern nonlinear science applied to the geological hazards and the creep-slip, stick-slip occurred on the joints of rock mass and the monitoring technology of the geological hazards.The basic thinking is put forward which can be applied the modern nonlinear science to the geological hazards occurred in the Three Gorges Reservoir Area. 相似文献
2.
Yulin River is the major secondary stream of Three Gorges Reservoir Area. According to the requirement of "The Prevention Plan of Water Pollution in Three Gorges Reservoir Area and the Upper Areas (2001-2010)", the water environment pollution in Yulin River valley should be controlled. In this paper the reason of the water pollution is analyzed through investigation and evaluation on the present situation of Yulin River in North Chongqing area, and then a proposal on the prevention and cure measure of water pollution of Yulin River is presented. 相似文献
3.
After completion of Three Gorges Reservoir at Yangtze River, protecting and improving the ecological environment of this area is becoming increasingly important factor in comprehensive progress of the economy and society of Chongqing City. The industrial solid wastes are one of the crucial factors influencing the environment quality of Three Gorges Area and they are also the hot and difficult problems influencing the development of economy and society of Chongqing City. At this point, firstly, the discharge, present situation, prospect and development of treatment and utilization of industrial wastes in Chongqing are summarized. Secondly, the experience at home and abroad are analyzed. Then, the way and foreground for recycling the wastes with new technology are also discussed. Finally, countermeasure for treatment and utilization of industrial solid wastes after completion of Three Gorges Reservoir at Yangtze River is brought up. The study on treatment and utilization technology of industrial solid wastes will be beneficial not only to the protection of ecological environment of Three Gorges Area, but to the development of new Chongqing City as well. In a word, it will have great environmental, social and economic benefits. 相似文献
4.
With GC/MS Approach, PAHs in raw water and effluent of six water purification plants in Three Gorges Reservoir Area are analyzed quantificationally. Six species of PAHs such as acenaphthene, phenanthrene, anthracene, pyrene, fluoranthene and acenaphthylene are determined. Of which, fluoranthene is priority pollutant firstly listed by SEPA. The results show that there are several variety of PAHs in raw water and effluent in water purification plants of Three Gorges Reservoir Area, but on the whole, PAHs concentration level is low. The results also show that PAHs removal capacity of conventional water treatment techniques is poor. 相似文献
5.
There is a promising future for lateral aviation in the Three Gorges Reservoir Area of the Yangtze River because of the abundant natural and cultural tourism resources.The advantage of the lateral aviation is its low investment,convenience,speed,and wide service area.It is an important factor for the future development of tourism in cities in this area.This paper analyzes the realities and problems facing lateral aviation in this area and suggests some countermeasures and planning suggestions for lateral aviation development. 相似文献
6.
The gases generated by anaerobic fermentation of organic solid wastes in Three Gorges Reservoir Area are CH_4,CO_2,H_2S,NH_3,H_2 and some micro-gases.Data analysis shows that in the cities and towns of Three Gorges Reservoir Area,4 380 thousand tones of garbage,3 800 thousand tones of faecal were generated each year.In landfill of the garbage in average of 290 millions kg of CH_4 was generated,also in average of 230 millions kg of CH_4 was generated from the faecal.CH_4 is a very important greenhouse gas;the proportion of its contribution to greenhouse effect is next to CO_2.Other gases only have small influence on the whole atmospheric environment. 相似文献
7.
以10个来自三峡库区的玉米地方品种为材料,通过盆栽实验和设置低氮胁迫处理,研究低氮胁迫下玉米地方品种的苗期植株形态和生理效应.结果表明,低氮胁迫对玉米地方品种幼苗植株形态和生理有不同程度的不利影响,不同玉米地方品种的耐低氮特性存在明显差异.不同地方品种的同一植株性状和同一地方品种的不同植株性状的耐低氮胁迫指数存在差异.侧根数、叶面积、根体积和植株干重可作为玉米地方品种耐低氮种质筛选的形态指标,硝酸还原酶活性和丙二醛含量可作为耐低氮种质筛选的生理指标.此外,三峡库区玉米地方品种中有较丰富的耐低氮种质可供玉米育种利用. 相似文献
8.
City street construction in the Three Gorges Reservoir Area has a specific character. Some streets have characteristics adapted to changing water levels in the reservoir and to topography. In this paper, we analyze the development course and building char 相似文献
9.
《Journal of Landscape Research》2017,(1)
Water level fluctuation zone(hereinafter referred to as "WLFZ") is a transitional ecosystem between terrestrial ecosystem and aquatic ecosystem,and also a key area to control its neighboring terrestrial and aquatic ecosystem. After the Three Gorges Reservoir was put into use,ecological environment of its WLFZ has aroused wide concern from domestic and foreign experts. On the basis of introducing characteristics of WLFZ of the Three Gorges Reservoir,current ecological environment and main problems of this area were analyzed,plant selection and configuration was elaborated as well as the implementation effect of many WLFZ protection and ecological restoration modes. In view of the actual conditions,pertinent suggestions were proposed for WLFZ of the Three Gorges Reservoir,namely classified protection and ecological restoration,enhancing monitoring and assessment of current situation and change tendency,carrying out technical researches and demonstration of WLFZ wetland ecological restoration. 相似文献
10.
After the dam of the Three Gorges is built, the raising water will inevitably cause the revival of the part of ancient landslide and the generation of new landslide ,which will influence the town development and traffic safety in the Three Gorges Reservoir Area. In the light of the specific conditions of the Three Gorges Reservoir Area, this paper, taking Fengdu's MingShan landslide in Chongqing for an example, has considered ten typical calculative projects, offered the correspondent load systems acting on the sliding mass and put forward the analytical and calculative method to evaluate the stability of a landslide. The ten typical calculative projects include dry season(natural state), raining season (rainstorm or rain for a long period of time), dry season and water level (175m ) of the reservoir, raining season and water level (175 m) of the reservoir, dry season and earthquake, raining season and earthquake, dry season and water level (175 m ) of the reservoir and earthquake, raining season and water level (175 m) of the reservoir and earthquake, dry season and water level lowered from 175 m to 145 m, raining seasons and water level lowered from 175 m to 145 m, and so on. 相似文献
11.
三峡库区次级河流污染现状与对策研究 总被引：1，自引：1，他引：1
沉水植物金鱼藻和黑藻在治理三峡库区次级河流水体污染具有广阔前景,对保护三峡水库的水环境贡献很大,在库区水体中可以发挥强大的环境生态功能。本文通过分析三峡库区次级河流的环境问题,预测了金鱼藻和黑藻在库区的应用前景,即防止水体富营养化、有机物污染、重金属污染、抑制藻类生长,以及维持生物多样性、生态完整性和稳定性。 相似文献
12.
The eutrophication of water body will destroy the balance of ecological environment.To determine the total nitrogen content in water body exactly,is one of the most important evaluating indicators that whether the water body has been polluted by eutrophication or not.After the foundation of the Three Gorges Reservoir,current velocity lowers and it may result in the eutrophication of water body.In terms of the Lambert-Beer Law,the authors adopt potassium sulpersulphate oxidation-ultraviolet spectrophotometry to determine the total nitrogen content in the Three Gorges Reservoir.By analyzing a variety of possible factors,they bring forward a method to determine the total nitrogen which can be used in lab and also have high performance.With this improved method,the authors determine the factual water samples of the Three Gorges Reservoir in the main urban area of Chongqing,and the result is that the total nitrogen content is(0.6~1.0) mg/L,less than the limiting value(2.0 mg/L) in national standard.So the water body of the Three Gorges Reservoir still eutrophication does not take place.So eutrophication does not take place in water body of the Three(Gorges) Reservior. 相似文献
13.
The effects of flooding and subsequent air-drying on NH_4~+ adsorption and the release of nitrogen of typical soils adsorbed ammonia in Three Gorges reservoir were studied in the laboratory.The influence of adsorption and release of soils in Three Gorges Reservoir on Aquatic Environment Quality was also studied.The results show that: 1) The adsorption ability is enhanced by flooding and subsequent air-drying.The capacity of the ammonia adsorption capacity was increased from 666 mg/kg to 833 mg/kg.2) Nitrogen,which has been adsorbed by sample soils in drawdrown area of Three Gorge area,is released under simulating flooding condition.The more the soil adsorbed,the more the nitrogen released.The ratio between aerobic condition and anaerobic condition is 1.2~1.4.3) The soils in drawdrown area of Three Gorge Reservoir can adsorb nitrogen from surface runoff,and during submersion periods the nitrogen is released.The risk of Eutrophication is increased in Three Gorges Reservoir. 相似文献
14.
Estimation of the N and P Contributions to the Water Quality of the Three Gorges Reservoir 总被引：1，自引：0，他引：1
The elements N and P are crucial to the water quality of Three Gorges Reservoir. After the present situation and characteristics of N and P pollutions analyzed and statistical method, flux method and modeling method adopted to estimate the quantity of N and P from upstream and reservoir area, the pollution loads of point and no-point pollution source, the conclusion that the main source of N and P pollutants are from both upstream of Reservoir and non-point pollution. 相似文献
15.
Suspended sediments play an important role in the transformation process of pollutants in rivers.The adsorption characteristic of suspended sediments in Three Gorges Reservoir Area to phosphate was studied in this paper.Based on the indoor adsorption balancing experiment and kinetic modeling experiment,the main factors for adsorption process of sediments(particle size of sediment,initial concentration etc.) were discussed.The major results of the experiment were as follows:(1) Three kinds of suspended sediments with different particle sizes were used for the study of adsorption characteristic with different sediment concentration.The amount of phosphate adsorption increased with the increase of the sediment concentration and sediment particle size.(2) With the help of Langmuir isotherm theory,the related parameters in kinetic model were estimated,the experiment results indicated that the adsorption isotherm of phosphate in Three Gorges Reservoir Area fitted with the fifth type of Langmuir adsorption isotherm,the maximum amount of phosphate adsorption would emerge when the phosphate concentration was relatively high,but it would move down when the phosphate concentration increased afterwards.(3) Phosphate adsorption increased with the increase of initial phosphate concentration,the average time for adsorption balance was 2-4 hours. 相似文献
16.
目前在三峡库区消落带耕种行为给三峡库区带来生态环境恶化,通过经济补贴让农户弃耕可以防治库区生态环境恶化。采用意愿调查法,对库区消落带沿岸农户进行随机入户调查。以农户受偿意愿为依据,估算经济补贴标准,并分析影响补贴意愿值的因素。分析统计数据得出：（1）农户对消落带土地依赖性很强,72.1%的农户在消落带土地上有农作行为;（2）农户对消落带生态环境问题感知度高,94.7%的农户愿意接受经济补贴放弃消落带耕地;（3）对农户的补贴意愿值进行加权求平均值得到549.7元/年·户的受偿平均值;（4）农户补贴意愿值与消落带耕地面积呈显著正相关。 相似文献
17.
Based on the investigation of energy consumption and air conditioning system working of 14 typical hotel buildings in Three Gorges Reservoir area cities, energy consumption characteristics of hotel buildings are analyzed. Then the use status of energy efficiency technologies of those hotel buildings is analyzed. Finally, effective energy conservation approaches for hotel buildings are brought forward and the energy-efficiency potential of variable water volume system is analyzed through testing. 相似文献
18.
The relations between construction of Three Gorges Project and development of Wujiang River Basin are illustrated from three aspects. The importance of harmonious township development in Wujiang River Basin and Three Gorges Area is discussed and the strategies for harmonious development are proposed. Firstly, to promote the hydroelectric power development of the stream and accelerate the urbanization of Wujiang River Basin; next, establish rational urban system structure to realize the regional harmonious development within Three Gorges Area. Detailed proposition is given in this paper to establish the spatial relations between Wujiang River Basin and Three Gorges Area and further suggestion is put forward to perform research on urbanization and urban systems in these areas. 相似文献
19.
作为控制食品安全的一种手段,很多国家和地区已经实施了HACCP体系,对羊肉生产过程中的各个环节可能存在的潜在危害进行了生物的、化学的、物理的分析,根据HACCP原理确定相应的关键控制点(CCP)和关键限值,并制定了相应的预防措施,建立了监控方法,将生产过程中的危害因素降低到最低程度,从而最大限度提高羊肉的食用安全性,旨在促进库区肉羊屠宰加工产业的发展。 相似文献
20.
为了从环境教育的视角提出有针对性的建议,以便从源头控制生活污水的排放,选取100个典型样本,通过问卷调查方式,对库区山地村落村民生活污水排放态度的积极程度、生活污水知识的掌握程度、生活污水处理的自觉程度进行数据分析。结果表明,对生活污水排放态度的积极程度较差的是40岁以上群体、女性群体以及初中以下文化水平的群体;对生活污水知识的掌握程度较差的是40岁以上群体、男性群体以及初中以下文化水平的群体。各群体获取信息来源不同,是造成这种差异的主要原因。因此,应针对不同群体进行不同的环境教育,以提高当地村民的生活污水排放意识,有效保护当地及三峡水库的水环境安全。 相似文献