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Through assessment, it can be concluded that the water quality in Shuimo river valley of Urumqi was worse; the water quality did not improve in last three years, and this trend was not stable either in space or in time; the water quality was best in low water period but it's worse in flush water period and slack water period; in space the water quality in Tangcichangquan section was best , it's the second place in Qifangqiao section and Lianfengqiao section while it's worst in Miquanqiao section. According to the analysis, the trend of the water quality change of Shuimo river valley of the major pollutants, the method of Spearman was used in 1996 to 2002. It concluded, the pollutants did not have the remarkable trend of change in Tangcichangquan section,but BOD5 had very prominent raising trend in Qifangqiao section, so did BOD5, petroleum, and ammoniac nitrogen in Lianfengqiao, DO in Miquanqiao section in seven years.

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With the aggravation of organic pollution of the drinking water source and the improvement of the water-quality standards, the conventional treatment craft of drinking water used in most of water plants in China can't remove the organic pollutant effectively to satisfy people's demand in the water quality. Consequently, permanganate preoxidation technic and mineral materials are combined with coagulation to removing the organic pollutant of drinking water further, so that to solve the increasing contradiction between the aggravation of organic pollution of the drinking water source and the striction of the water-quality standards.

隨著飲用水源有機(jī)污染的日益加重以及飲用水水質(zhì)標(biāo)準(zhǔn)的不斷提高国产成_人__亚洲_国产，我國(guó)大多數(shù)水廠所采用的傳統(tǒng)處理工藝不能有效地去除有機(jī)污染物日韩欧美黄色视频一区二区播放，從而對(duì)飲用水水質(zhì)產(chǎn)生一定的影響，因此熟女淫乱性爱视频网，引入高錳酸鉀預(yù)氧化技術(shù)和礦物吸附材料插精品人妻，從而強(qiáng)化去除飲用水中的有機(jī)污染物，以解決水源有機(jī)污染日益嚴(yán)重與飲用水水質(zhì)標(biāo)準(zhǔn)日趨嚴(yán)格之間的矛盾欧美99。

The paper focuses on the tetraploidy black locust on Loess plaeatu of West Shanxi province, applys steady state promoter method and image processing technology to study the days transpiration water consumption in different weather ,different seasons and different site conditions,has primary analysis on the impact of environment on the transpiration and carries on the calculation to the tetraploidy locust tree by the single leaf water consumption to the single tree water consumption in CaiJiachuan watershed; Uses fast weighing method to measure and analyze the transpiration water consumption of five different herbs under the tetraploidy black locust forest (Capillary Wormwood,Vanilla,Agropyron Sristatum , Common Sowthistle and Medicago Sativa) in short time, in the same and different growcrop,and calculates the average transpiration water consumption per square metres ;the soil colome weighing method was used for determining diumal variation quantity of soil moisture evaporation, analyzing the dynamic variation and caculating the total quantity of soil evaporation water consumption from May to August ; then 5 kind of suppositions about the types of surface vegetation coverage are proposed in experimented site and the total evapotranspiration water consumption are calculated under 5 suppoitions ,aim at providing preliminary theoretic basis for ascertaining the transpiration water consumption of tetraploidy black locust forest,controling standing forest density and optimizing the forest grass deploy on loess plaeatu of west Shanxi province .

本文以兩種不同立地條件下的四倍體刺槐林為研究對(duì)象国产2021三级片，采用了氣孔計(jì)法對(duì)蔡家川流域生長(zhǎng)季內(nèi)不同天氣狀況下(典型晴天、陰天和半陰天)四倍體刺槐日蒸騰耗水規(guī)律www.91超碰、不同季節(jié)(生長(zhǎng)季初期激情乱小说在线观看、中期和末期)的蒸騰耗水規(guī)律、兩種不同立地條件下四倍體刺槐蒸騰耗水比較以及影響四倍體刺槐蒸騰耗水的環(huán)境因子進(jìn)行初步研究分析激情性爱在线观看，并對(duì)四倍體刺槐由單葉耗水量向單株耗水量進(jìn)行推算免费黄色视频不用下载在线观看；采用經(jīng)典快速連續(xù)稱重法對(duì)四倍體刺槐林地生長(zhǎng)的主要5種草本植物(白蒿、香青蘭国产无码一级视频、冰草涩涩视频一区二区三区、苦苣和苜蓿)短時(shí)段內(nèi)蒸騰耗水規(guī)律、不同生長(zhǎng)季內(nèi)蒸騰耗水規(guī)律免费在线视频网站、同一生長(zhǎng)季不同種類草本植物蒸騰耗水量進(jìn)行了比較分析欧美视频在线，并且采用面積與重量比的方法推算出了單位面積四倍體刺槐林地幾種主要草本植物平均蒸騰耗水量：采用土柱稱重法測(cè)定了5月份～8月份土壤水分蒸發(fā)晝夜變化量、對(duì)試驗(yàn)期內(nèi)土壤蒸發(fā)量動(dòng)態(tài)變化作了分析深夜在线网站、推算出了試驗(yàn)地5月份～8月份土壤蒸發(fā)耗水總量美女免费视频一区；對(duì)試驗(yàn)地地表植被覆蓋類型提出了5種假設(shè)，推算出5種假設(shè)的情景下蒸散耗水總量www.nlvnja.com，旨在為晉西黃土區(qū)四倍體刺槐林蒸騰耗水量的確定羞羞呦呦视频在线免费播放、林分密度調(diào)控以及林草優(yōu)化配置等提供初步的理論依據(jù)。

Water footprint and virtual water are the hot focus of academic attention in the field of international water resource research. The present paper attempts to apply the concept of "virtual water" and "water footprint" to the calculating of the virtual water contents of major agricultural and industrial products and the trade counterbalance of virtual water, and estimate the volume of water footprint of Chongqing as a whole and of its three economic zones.

水足跡和虛擬水是當(dāng)前國(guó)際水資源領(lǐng)域研究的熱點(diǎn)，用水足跡與虛擬水的概念及計(jì)算方法欧美喷水网站一级a片，計(jì)算了重慶市及其三大經(jīng)濟(jì)區(qū)的主要農(nóng)畜產(chǎn)品虛擬水含量及其虛擬水的貿(mào)易平衡量毛毛黄色A片、工業(yè)產(chǎn)品虛擬水貿(mào)易平衡量，并最終估算了重慶市及其三大經(jīng)濟(jì)區(qū)的水足跡總量欧美黄色插插。

Three main methods with lacustrine carbonates have been used to reconstruct the lake water palaeo-temperature at present. First, the technique of isotopic geological thermometer, since being put forward to reconstruct sea-water paleo-temperature, was subsequently introduced into lacustrine carbonate sediments for constructing lake-water based upon the function relationship between lake-water temperature and the oxygen isotopic compositions of lacustrine carbonate and lake-water. Second, paleo-temperature of the lake-water can be reconstructed by determining Mg/Ca values of the lacustrine ostracode shells. And third, paleo-temperature of the lake-water can be reconstructed based upon the statistic model between the oxygen isotopic composition of lacustrine carbonate and the Lake-water temperature by testing the modem hydrogeological parameters and some relevant isotopic data of the lake basin.

目前利用湖泊碳酸鹽對(duì)湖泊古水溫進(jìn)行重建主要有三種方式亚洲A级黄片在线，一是運(yùn)用同位素地質(zhì)溫度計(jì)原理，利用水溫與湖泊碳酸鹽氧同位素值和湖水氧同位素值三者之間的函數(shù)關(guān)系人妻AV无码系列专区移动可看，對(duì)湖泊古水溫做定量研究18禁黄网站禁片无遮挡；二是通過測(cè)定介殼[Mg(上標(biāo) 2+)]/[Ca(上標(biāo) 2+)]進(jìn)而重建古水溫；三是通過測(cè)定湖泊流域范圍內(nèi)現(xiàn)代水文氣象參數(shù)及一些相關(guān)的同位素資料直接建立起湖泊自生碳酸鹽氧同位素值與溫度間的統(tǒng)計(jì)模型在线资源av网站。

Examination of the equilibrium status of a point in the salt water zone and the description of piezometric heads at two points in both the salt water and fresh water zones reveals that the location of the fresh water-salt water interface in a coastal homogeneous, isotropic unconfined aquifer can be estimated based on piezometric heads at two points in the same vertical line tapping respectively the salt water zone and the fresh water zone (from the water table to the interface) when the groundwater flow system is in a steady state and satisfies the Dupuit assumption.

通過考察咸淡水界面之下咸水帶任意點(diǎn)的壓力平衡關(guān)系和咸水帶及淡水帶任意點(diǎn)的水頭描述得知永久黄网站色视频免费大全91，當(dāng)?shù)叵滤魈幱诜€(wěn)定狀態(tài)且滿足Dupuit假設(shè)時(shí)，可以根據(jù)同一垂直線上界面之下咸水帶任意點(diǎn)的咸水測(cè)壓水頭和界面之上淡水帶任意點(diǎn)的淡水測(cè)壓水頭確定濱海均質(zhì)各向同性潛水含水層咸淡水界面的位置欧美日韩一级特黄大片在线直播。

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水熱耦合效應(yīng)為主題青青青草视，基于研究對(duì)象的動(dòng)態(tài)變化特征，應(yīng)用化學(xué)動(dòng)力學(xué)原理国产在线视欧美亚综合，建立了含水作爱综合、熱因子以及水熱耦合效應(yīng)的土壤水分蒸發(fā)、肥料氨揮發(fā)動(dòng)力學(xué)方程国产农村老熟女国产老熟女，以及施入土壤中的尿素轉(zhuǎn)化為銨態(tài)氮的動(dòng)力學(xué)型方程日本中文在线中文幕；為使水勢(shì)—含水量關(guān)系式更好適應(yīng)變溫條件應(yīng)用的要求，建立了含溫度因子直接表征土壤持水曲線的經(jīng)驗(yàn)方程奇米777米奇影888视狠狠，以及含溫度因子的谷苗葉水勢(shì)與土壤含水量關(guān)系經(jīng)驗(yàn)方程国产操老逼视频。

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水熱耦合效應(yīng)為主題，基于研究對(duì)象的動(dòng)態(tài)變化特征欧美黑人粗暴多交，應(yīng)用化學(xué)動(dòng)力學(xué)原理黄片免费看3区，建立了含水、熱因子以及水熱耦合效應(yīng)的土壤水分蒸發(fā)国产精品黄色视频、肥料氨揮發(fā)動(dòng)力學(xué)方程曰韩视频第一页，以及施入土壤中的尿素轉(zhuǎn)化為銨態(tài)氮的動(dòng)力學(xué)型方程；為使水勢(shì)—含水量關(guān)系式更好適應(yīng)變溫條件應(yīng)用的要求免费看操逼黄片av，建立了含溫度因子直接表征土壤持(來源：A9eBC7b4b論文網(wǎng)www.abclunwen.com)水曲線的經(jīng)驗(yàn)方程亚洲欧美啊啊啊啊久久久，以及含溫度因子的谷苗葉水勢(shì)與土壤含水量關(guān)系經(jīng)驗(yàn)方程。

Aimed at the increasing eco-environmental problems, including water shortage, water pollution, soil salinization, water loss and soil erosion, loss of function of the channel and river, biocenose degradation, etc, which severely infected the sustainable development for irrigation area, the main works in this paper are summarized as followed: constituting the measures of water resources shortages for developing agricultural water-saving technologies and adjusting agricultural structures; constructing the water polluting control and purification system of Mushroom lake: source control and decrement-sewage collection and treatment - channel ecological interception - wetland treatment -reservoir purification; putting forward the systematic projects for soil salinization and water loss and soil erosion of the integrated application of water conservancy agriculture and forestry.; constructing the ecological impervious channel model in west bank, from all of which theoretical bases and technical support for the eco-environmental rehabilitant in Manasi irrigation area were offered. All of these works were based on data collection, technical analysis, on-the-spot investigation, experimental research and technical development about Manasi irrigation area, etc.

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