The pollution caused by the washoff of urban stormwater runoff from surface is the critical part of the non-point pollution. With deepened the control of the point pollution, it is serious day by day that the receiving water is polluted by urban stormwater runoff.

城市雨水徑流沖刷地面而引起的污染是面源污染的重要部分日日摸日日碰夜夜爽97无码，隨著點(diǎn)源污染治理的深入日本超级黄色视频网址，城市雨水徑流對受納水體的污染己日益凸現(xiàn)可以的黄色网站有哪些。

As this method calibrates all the model parameters in one procedure, and there is no need to separate the runoff, it can reduce the error caused by model parameter calibration due to intentionally separate runoff.

由于該方法同時優(yōu)選所有模型參數(shù)黄片日产，不需要對實(shí)測徑流進(jìn)行分割黄色A片福利视频，從而可避免人工分割徑流而出現(xiàn)的參數(shù)率定誤差一区二区无码视频观看。

The experimental results show that there is no runoff on test slops of any declivities with rainfall less than 9mm, and the runoff efficiency and rainfall are in direct proportion with rainfall larger than 9mm, which is more obvious on slope than on flat land.

試驗結(jié)果表明，降雨量小于9mm時試驗坡度的草坪綠地均不產(chǎn)流欧美激情第一欧美精品日本乱人伦；次降雨量大于9mm時www.jizz18，綠地的徑流效率與次降雨量成正比，而坡地上二者的相關(guān)性比平地更加顯著91免费国产极品视频。

Modeling and test are carried out in a group of series tanks separately in seven sub-valleys. After emending the parameters to every single tank using the hybrid genetic algorithm, the general runoff by way of adding all the runoff in every tank in the sub-valley has been acquired.

七個子流域分別采用一組串聯(lián)式水箱組進(jìn)行模擬国产日韩三级片，并結(jié)合混合遺傳算法考慮每個單一水箱的參數(shù)各有不同，最后將七個子流域水箱的出流疊加起來日韩成人欧美在线视频，得出總出流量好大好深好猛好爽免费视频。

The slop soil loss observation was stared in 1987 in Beijing, and the slope runoff plots were completed and improved in 2000, the entire seven mountain districts have emplaced the slop runoff stations.

北京的坡地水土流失觀測始于1987年，2000年對坡地徑流場又進(jìn)行了系統(tǒng)的補(bǔ)充完善免费人成短视频观看网站最，在全市7個山區(qū)區(qū)均布設(shè)了坡地徑流場操逼色图亚洲。

Aturate interception of vegetation in woodland (forest canopy, understory and litter), annual stem flow, Maximum capillary moisture capacity in woodland, saturate infiltration rate of woodland soil, runoff modules of woodland, rainfall erosive force indices, annual river runoff volume and sediment delivery as well as their seasonal distribution, the maximum peak flood frequency curve

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Taking Yanhe as an example, the distinct transition point of flood season runoff time series by the impacts of human activities has been detected by way of mathematical statistics analysis. And meanwhile, based on the datum before distinct transition point, the forecast model is set up only with the data series before the distinct transition point. The difference between the value derived from the equation and the observed value is right the influence on flood season runoff induced by human activities.

以延河流域為例免费久久一级欧美大黄，采用數(shù)理統(tǒng)計方法推估獲取人類活動影響下汛期徑流時序的顯著轉(zhuǎn)折點(diǎn)，以顯著轉(zhuǎn)折點(diǎn)前的數(shù)據(jù)建立預(yù)測模型国产成年综合，對比分析汛期徑流量的實(shí)測值與預(yù)測值99riav67，其差值即為人類活動對汛期徑流的影響程度。

The model adopts continuity equation, diffuse wave model, and the Mannings equation for surface runoff routing, while uses the Green and Ampt infiltration theory and Darcys Law for subsurface runoff treatment. Uncertainty analysis incorporating Monte Carlo simulation and a Maximum Likelihood Estimation and Efficiency Coefficient is used to retrieve optimal parameter values and to estimate the confidence interval for the simulation results.

目前已經(jīng)完成模式中各相關(guān)模組的研發(fā)日韩一区二区A片免费，包含利用DEMs 析取坡度一级婬片A片AAA毛片、流向與集流面積；利用衛(wèi)星影像評估土地利用類別内射美女处女视频；結(jié)合蒙地卡羅法8050国产午夜二级、最大概似法與效率系數(shù)的參數(shù)率定器；以及整合Green and Ampt 的入滲理論精品自拍1314、Manning 地表流速公式华人在线观看，Darey 定律和擴(kuò)散波理論的水文演算模組。

A case study shows that the stepwise regression model of daily runoff prediction based on wavelet decomposition is superior to auto-regression model, and is able to predict the daily runoff in 1~3 days in non-freeze-up period and 1~7 days in freeze-up period with accepted accuracy.

計算實(shí)例表明国产真实强推不让在线观看，本文提出的基于小波分解的逐步回歸日徑流預(yù)測模型的預(yù)測精度高于多元自回歸模型黄色网站免费大全高，能對非凌汛期未來1~3天以及凌汛期1~7天的日均流量進(jìn)行預(yù)測，能夠為制定水電站未來的發(fā)電計劃提供科學(xué)的依據(jù)国产不卡自拍av。

Based on analyzing the physical process of runoff generation ,a method for partition of surface and ground net rainfall and runoff generation is proposed.

對流域產(chǎn)流的物理過程進(jìn)行了分析日韩精品妓女网页在线观看视频免费，建立了地面及地下凈雨劃分的數(shù)學(xué)公式及流域產(chǎn)流的計算方法国标精品黄片一区。