你的位置:水利论文 >> 论文 >> 重庆市 >> 重庆大学 >> 详细内容 在线投稿

三峡库区消落带污染特性及水环境影响研究 【作者】韩勇 【导师】李晓红

热度73票 浏览69次 【共9条评论】【我要评论 时间:2007年7月01日 16:16

/^o!Sq.P0l-VQAH4x0三峡库区消落带污染特性水环境影响研究水利论文I\7e!E!E&k

riE.E!r^0qu8R0作者韩勇导师李晓红
L*xR&u }/Y,[Y0【作者基本信息】重庆大学,环境工程,2007年,博士

/Sj3YE/GdbA0水利论文exrB.H^,p(r


gi)u;rv1BN0【中文摘要】 三峡工程自开工建设以来,其引发的生态环境问题一直为世人所关注。建成后的三峡水库将有650km长,水域面积为1084km2,总库容达445.7亿m3,这将是中国最重要的战略性水资源之一。三峡工程自2003年6月正式蓄水以来,库区水位已抬升至156m,到2009年水位将最终升至175m。鉴于三峡工程采用的“蓄清排浊”运行方式,即冬季(枯水期)运行水位为175m,夏季(丰水期)运行水位为145m,这将使库区沿江地区形成最大水位落差为30m的消落带。消落带又被称之为水库的“肝脏”,具有很强的解毒净化作用,同时也是水陆两种生态系统间交换的廊道,具有缓冲带的功能和植物护岸功能。但消落带受到水、陆环境的交替影响,其生态系统结构同时受到陆生生态系统和水生生态系统的双重作用。由于受到陆地污染物的进入、淹没地污染物的浸出以及水体自净能力下降的影响,消落带水环境存在着岸边污染带和水陆交叉污染两方面的问题,将严重影响库区水环境质量,扰乱该地区原生生态系统,影响三峡库区生态环境安全。消落带面临的水环境问题、水土流失问题、库岸地质环境问题以及周边人群健康问题日益受到人们的重视,消落带的生态环境问题亟待解决。本论文...更多依托重庆市科委、重庆市发改委基金项目:“三峡库区消落带生态环境研究及生态模式重建”(项目编号03-26),开展了三峡库区消落带污染特性的研究,分析了消落带水质现状,以及氮、磷及重金属等物质对水环境的影响研究,从生态系统角度提出消落带生态构建的基本原则及防治措施。主要研究内容为:三峡工程蓄水后,库区消落带初步形成,流域内消落带的水位变化最为明显,尤其是支流受到长江主干流江水顶托后,水位上升幅度较大,流速明显变缓,极大可能发生富营养化现象。本论文主要选择了典型消落带断面,分析了浮游生物种类,并以典型流域——小江流域,对该流域的消落带水体的富营养化程度进行了调查、采样、监测和分析,并运用模糊数学理论建立了评价模型,对消落带水体的富营养化程度进行了评判,发现蓄水后长江支流富营养化现象较为严重。本论文对库区消落带土壤中重金属元素进行了采样和剖面分析。三峡库区消落带土壤中的紫色土淋溶层镉、汞,母质层的镉、锌、汞的平均含量高于全国同类土壤同层次的平均值;潮土的淋溶层、母质层锌、铜、铅、汞的平均含量高于全国同类土壤同层次的平均水平;石灰岩土的淋溶层、母质层的金属平均含量均低于全国同类土壤同层次的平均水平。从消落带土壤中金属元素中的分布特征来看,Cd、Cr、As、Hg、Ni基本符合正态分布(Sig.>0.05),Pb、Zn和pH值均不符合正态分布。土壤pH值与土壤Cd、Cu的含量之间显著相关,与其它金属元素的含量相关性不显著。消落带土壤中Cd-Cu的相关系数为0.67,Pb-Ni的相关系数为0.786,As-Ni的相关系数为0.642,这三种元素在消落带土壤中的含量具有显著相关。在实验室模拟浸泡实验的基础上,研究了Cd、Hg、Pb三种重金属元素的浸出规律,根据实验数据建立了这三种重金属元素的溶出速率方程。论文采用一维水质模型,以小江流域消落带为研究对象,预测小江流域消落带的土壤处于淹水期后,其中重金属元素释放后对库区水环境的影响。通过对消落带土壤的分析,结果表明消落带土壤中氮的含量为0.06~0.28%,磷的含量为0.037~0.071%,土壤中氮磷含量在全国属于较高地区。其中潮土和紫色土氮磷含量比黄壤含量高。消落带土壤中的TN与pH值之间具有一定负相关,TN-TP以及TP-pH之间的相关性不显著。消落带土壤中的全磷含量没有显著差异,但全氮含量在地区分布上具有显著差异。论文仍以小江流域消落带为研究对象,运用一维水质模型预测小江流域消落带土壤处于淹水期后,释放的氮磷元素对水环境的影响。小江流域消落带处于出露期时,因土壤流失而带进水体的全磷和全氮的负荷分别为21.6t、9.64t,对水质中TP和TN浓度的最大贡献值分别为0.02 mg/l和0.01mg/l,衰减到10km处,对水体影响浓度变为0.018 mg/l和0.001 mg/l。库区消落带周边环境因素及管理水平等,对维护库区消落带生态系统的稳定性,以及防止消落带产生的环境问题对三峡水库的影响有着重要的作用。论文最后就三峡库区消落带生态环境问题提出了相应  还原

7^Y+bp#v9y ql t0

7ID ?D/v3ib0【英文摘要】 The environment problems of the Three Gorges Reservior have being cared since it was started. With the construction of the Three Gorges Project, the Three Gorges Reservior will be more than 600 kilometers in length, 1084 square kilometers in area, and will be able to hold about 44.57 billion cubic meters of water. The project will be the foremost tactic water resource in China. Since impounded in Jun 2003 , the water level of the Reservior has risen to 156 meters, and will reach 175 meters by the end of 2009. The Three Gorges Project adopts the scheme of storing fresh water and excluding the muddy water, that is, low-water in sumer and high-water in winter, which will form wet-dry zones with a drop of 30 meters in maximum water level in the areas along the river. The wet-dry zone has strong detoxifcation function , as liver to the reservoir. It is also a gallery for exchange things and energy between land and water system, take cushion to the water and protect to the shore . In the fut...更多ure, due to the alternate influence of land and water environment, the ecosystem structure will be acted up by both terrestrial ecosystems and aquatic ecosystems. Owing to the influence of industry sewage, living sewage, the lixiviate things of soil in the wet-dry zones and the falling of water self clean ability, the water quality of reservoir will be influenced and the fluctuation in stage will share a inverse relationship with the regression of river level in the natural state. Gradually, the attention is given to the aquatic environment problems, the geological environment problems and the healthy problems of people in the surrounding areas which the wet-dry zones face.The thesis rely on the number 03-96 item of Chongqing Sciene Committee and Chongqing Development Committee, which is research on ecosystem environment and rebuild mode of wet-dry zone. The thesis analyse the characteristic of N, P heavy metals and other pollutants in the wet-dry zone, investigete the impact to the reservoir and bring forward the prevention measure. Mostly study content are as follows.After impounding of the project, the wet-dry zone formed primarily and the wate level changed most obviously. Especially the anabranch water level is raisen great and the flow speed slow down obviously for holded up by the Yangtze River, and the rate of water eutrophication is raisen. The thesis chose the typical branch river, Xiaojiang river, to sample and research the eutrophication degree , and discover that the eutrophication of branch river are serious. The soil in wet-dry zones of the Reservoir is a constituent part of its habitat. Throμgh investigation and analysis of heavy metallic elements in the soil, we know that, the average content of Cadmium and Hg of purplish soil in eluvial horizons, the average content of Cadmium, Zinc and Hg in internal layer are both above that of the soil of the same kind and the same level in the whole country, and the average content of Zinc, Copper,Lead, Fluorid in eluvial horizons and internal layer of Chao soli shares the same result, while the average content of metal in the eluvial horizons and internal layer of limestone soil is under the level of whole country.The distributing character of Cd, Cr, As, Hg, Ni in soil of wet-dry zones display normal distribution basically(Sig.>0.05), while Pb, Zn and pH don’t display this distribution. The content of pH, Cd and Cu take on significant correlation, which relativity are not prominent with other metal elements. The relativity coefficient of Cd and Cu in soil of wet-dry zones is 0.67, Pb and Ni is 0.786, As and Ni is 0.642, which take on significant correlation.On the basis of lab simulation experiment of immersion, we study the soaking-out laws of three heavy metallic elements (Cd, Hg and Pb), with the experimental data, set up the stripping rate equation of them. This paper uses one-dimensional water quality model, studies on wet-dry zones of Xiaojiang river, and forecasts the influence of the released heavy metallic elements on the water environment in the Reservoir.By analysising the soil of the wet-dry zone, we find the N content is about 0.06-0.28%, and the P conten is about 0.037-0.071%, which belong to the region of high content in China. In that soil the N, P content of the Chao soil and purple soil are higher than yellow soil. It has some plus interfix between the total N content of soil and PH, and has not distinct interfix between total N and total P, between total P and PH. The total N content has different distributing with area and the total P content has not the character.The thesis take the XiaoJiang river for research object, make use of one- dimension water quality model to forecast the impact of discharging N and P. When the wet-dry zone of the XiaoJiang river show up, the most N, P burthen with the erosive soil to water are 21.6 t and 9.64 t, which bring the most concentration of total N 0.02 mg/l and total P 0.01 mg/l to the water, which attenuate to 0.018 mg/l and 0.001 mg/l on 10 km of the river,Factors, such as Peripheral environment elements, management, etc, have a important influence on maintaining ecosystem stability in wet-dry zones and preventing the effect on the water environment of the TGR of environment problem broμght by wet-dry zones. In the end, this paper puts forward correlative measures about the prevention and cure of ecological environment problems in wet-dry zones of the TGR.  还原

m@rYib6Xe0水利论文 C3Z6a'w-K.\Q

【中文关键词】 三峡库区; 消落带; 污染特性; 水环境; 影响; 研究
s$LV/Gr!F.FM0【英文关键词】 The Three Gorges Reservoir; wet-dry zone; pollution character ; water environment; impact; study水利论文,S7Sn `0h,D

0}0wca2AxCp0

e_0~1oh8|y0 水利论文;Z [(FexyM

TAG: 李晓红 三峡库区 水环境 特性 韩勇
顶:10 踩:6
【已经有57人表态】
8票
极差
7票
很差
9票
较差
8票
稍差
4票
稍好
4票
较好
8票
很好
9票
极好
下一篇:钢筋混凝土结构二阶效应及设计方法的研究 【作者】刘毅 【导师】白绍良
上一篇:海底管线腐蚀检测与腐蚀预测的研究 【作者】胡舸 【导师】张胜涛
水利论文IANA网友 [nypd1doi] ip: 223.240.*.*
2015-11-04 22:29:34
8 mirielle dimensions San Weikui really serious shortages, and descriptions toge <a href="http://www.wholesalejerseyschinanflshop.com/">Wholesale Jerseys China</a> ther with the occurrence quite possibly hCanine  <a href="http://www.wholesalejerseyschinanflshop.com/">Wholesale Jerseys From China</a> Influenza Fast Facts Influenza is a Wholesale Jerseys China common viral disease among horses that affects the respiratory system and has now made its way into the canine  <a href="http://www.wholesalejerseyschinanflshop.com/">Wholesale Jerseys</a> w
水利论文Unknown网友 [kidc5b0a] ip: 183.160.*.*
2016-01-17 07:10:36
Try out wh <a href="http://www.cheapnfljerseyschinashop.us.com/"> Cheap Jerseys From China</a> ether it is feasible by ca <a href="http://www.cheapnfljerseyschinashop.us.com/"> Cheap Jerseys China</a> rrying out very low affect physical exercise for a few moments. What they do not understand is that a realtor is there only to get buyers <a href="http://www.cheapnfljerseyschinashop.us.com/"> Cheap NFL Jerseys China Wholesale</a>  but not to attrt buyers.  Cheap Jerseys From China .Number 3: Chanel Crocodile BiarritzI was planning to e o-n here yesterday
水利论文IANA网友 [lkad5fdb] ip: 223.240.*.*
2016-02-02 12:12:56
<a href="http://www.predatorsofficialstore.com/Authentic-Olli-Jokinen-Jersey/">Olli Jokinen Jersey</a> The thought patterns typical in the "don't spend money" mode go like thi <a href="http://www.predatorsofficialstore.com/Authentic-Pekka-Rinne-Jersey/">Authentic Pekka Rinne Jersey</a> s: "If I do this I just might end up spending thousands of dollars this month alone.---Karung-guni. Your advertisent will be quickly launched on  <a href="http://www.predatorsofficialstore.com/Authentic-Marek-Mazanec-Jersey/">Authentic Marek Mazanec Jersey</a> the market and this would bring targeted trafLooking for fashionable clothing with
水利论文安徽省电信网友 [kse5ig0d] ip: 117.68.*.*
2016-07-06 07:55:55
If you can't tag,Quinten Rollins Jersey, then this image will only be vi <a href="http://www.thepackersshoponline.com/Youth-Quinten-Rollins-Packers-Jersey/">Quinten Rollins Jersey</a> sible to users who will be already on  <a href="http://www.thepackersshoponline.com/Youth-Brad-Jones-Packers-Jersey/">Packers Brad Jones Jersey</a> your own friends list. His complete control over the BJJ black belt Penn was incredible, but hardly surprising given the way that GSP dominated four time NCAA All American wrestler Josh Kos <a href="http://www.thepackersshoponline.com/Youth-Micah-Hyde-Packers-Jersey/">Micah Hyde Jersey</a> c
水利论文安徽省电信网友 [lkad5fdb] ip: 117.68.*.*
2016-08-17 19:21:53
En entendant cela, Lin Wu un rhume look crateur <a href="http://www.authenticramsofficialonline.com/AUTHENTIC-AARON-DONALD-RAMS-JERSEY/">Aaron Donald Womens Jersey</a> s de crack de la lame de l'esprit,Aaron Donald Womens Jersey, Even tenant advocat <a href="http://www.authenticramsofficialonline.com/AUTHENTIC-GREG-ROBINSON-RAMS-JERSEY/">Authentic Greg Robinson Jersey</a> es say that such a fee structure penalizes technologies that are more efficient and thus use less land.Obesity has been shown to be an important factor in chronic back pai <a href="http://www.authenticramsofficialonline.com/AUTHENTIC-NICK-FOLES-JERSEY/">Authentic Nick Foles Jersey</a> n
水利论文Unknown网友 [nopd7roi] ip: 183.160.*.*
2016-10-22 14:53:28
For gue <a href="http://www.superstarcoloursuk.com/adidas-superstar-supercolor-sale.html"> adidas superstar supercolor womens size 6</a> sts, it will continue to be an education experience.  <a href="http://www.superstarcoloursuk.com/adidas-zx-850.html"> adidas zx 850 mens sale</a> It would be to your advantage to talk them through before they get out of hand before mid September. With the commercialization of marketing and advertising the ad industry is flourishing with a lot greater speed."I w <a href="http://www.superstarcoloursuk.com/adidas-superstar-slip-on.html"> adidas superstar slip on black</a> ould say it's quite a b
水利论文Unknown网友 [dlsf08ec] ip: 183.160.*.*
2016-10-23 00:25:23
Th <a href="http://www.airmax2016kaufen.com/nike-air-max-2016-kaufen/air-max-2016-rosa.html">nike air max 2016 rosa damen</a> ere are generally many bowling alleys that nike air max <a href="http://www.airmax2016kaufen.com/nike-air-max-blumenprint-kaufen/air-max-1-blumen.html">nike air max 1 ultra blumen</a>  2016 rosa damen may be found in any city. Alternatively of getting in touch with as a further Salesperson, on your own could say that on your own're <a href="http://www.airmax2016kaufen.com/nike-air-max-2016-kaufen/air-max-2016-rot.html">nike air max 2016 rot schwarz</a>  with the Consumer Family members Division. HBK and Hart feuded until Ken returned from injury
水利论文IANA网友 [nypd1doi] ip: 36.57.*.*
2017-10-13 06:33:33
Catering is a part of the event that  <a href="http://www.achetergellytefrance.fr/asics-gel-lyte-5-v-soldes.html">asics gel lyte 5 pas cher</a> can b <a href="http://www.achetergellytefrance.fr/onitsuka-tiger-mexico-66-soldes/asics-tiger-mexico-66-jaune.html">asics onitsuka tiger mexico 66 jaune</a> e completely offloaded to experts providing mobile catering services.Taking the time to learn more about article marketing could do wonders for your business. An allgeneral philosophy  <a href="http://www.achetergellytefrance.fr/asics-gel-lyte-3-iii-pas-cher/asics-gel-lyte-3-noir.html">asics gel lyte 3 noir et blanche femme</a> is gone hand in hand with,asics gel lyte 5 pas cher, which leaves no space
水利论文IANA网友 [dj2gyqgr4c] ip: 36.57.*.*
2017-10-13 11:10:53
Training these two regions every time is the ea <a href="http://www.blazers-ireland.com/cheap-vans-shoes-ireland/vans-slip-on.html">vans slip on ireland</a> siest way to avoid back problems from sneaking through to you and spo <a href="http://www.blazers-ireland.com/nike-blazer-zebra-print.html">nike blazers zebra print red</a> iling your workout routines. This task is a nightmare for many of them as they come across several challenges. Our team are well trained to ensure that they deliver remarkable service <a href="http://www.blazers-ireland.com/cheap-vans-shoes-ireland/vans-old-skool.html">vans old skool ireland</a> s
查看全部回复【已有9位网友发表了看法】

广告投放

广告投放