There were four treatments on the hillside: artificial forest with underbrush, artificial forest without underbrush, planting tea bush on contour terrace, barren on contour terrace. The runoff depth, runoff index, water loss, soil erosion and soil organic matter erosion to the 4 treatments during 4 rainfalls were determined by using the Runoff Collector.

試驗(yàn)設(shè)計(jì)了人工林下地表覆蓋99riav。com、人工林下地表裸露242pao黄色视频、等高梯田種植茶樹(shù)和等高梯田裸地對(duì)照4個(gè)處理，采用自制的徑流收集器分別測(cè)定了各處理4場(chǎng)降雨的徑流深度在线观看视频在线高清黄色网站、徑流系數(shù)www.青草草在线视频、水土流失量和侵蝕量等指標(biāo)。

Considering the difference of runoff characteristics on different underlying surface in the area of plain tidal river network, four kinds of surface is divided,namely, waters paddy field-, dry land and central urbanized area,and suitable method is adopted separately in each surface to simulate runoff process. Xinanjiang Model usually applicable for mountain areas is introduced to river network area, furthermore, the paper researches runoff calculation of central urbanized area, the underlying surface is divided into pervious and imperviousness areas.In perviousness areas, Hoton Infiltration formula and corresponding spatial infiltration rate curve are used to establish the relationship between infiltration rate and soil moisture in order to decide the infiltration. According to practical situation.

根據(jù)平原河網(wǎng)區(qū)城市下墊面產(chǎn)匯流方式的不同综合图区欧美，分成水面黄色av电影在线、水田、旱地国产人看人碰人摸人澡、城鎮(zhèn)四類(lèi)中国熟妇乱人伦A片久久，分別采用相對(duì)應(yīng)的產(chǎn)流匯流計(jì)算方法，將適用于山丘區(qū)的新安江模型引入到平原河網(wǎng)區(qū)城市，同時(shí)對(duì)于城鎮(zhèn)這類(lèi)下墊面男人av天堂一区二区在线播放，從下滲角度考慮久久黄色网站视频写真，劃分成透水和不透水兩種類(lèi)型，根據(jù)霍頓下滲公式和下滲率空間分布曲線(xiàn)日韩美女福利动图视频在线观看，建立下滲率和土壤含水量的關(guān)系，進(jìn)而研制出城鎮(zhèn)透水面的產(chǎn)流計(jì)算方法三级在线视频观看国产，城鎮(zhèn)匯流根據(jù)實(shí)際情況可結(jié)合城市管道排水計(jì)算六月婷婷,激情九九。

The experiment is began with the runoff quality on the diverse roofage and different grade roadway, the results are as follows:(1) The concentration of contamination is different with the diverse roofage, and SS value is also different with the style roof;(2) In the beginning , the concentration of COD value and SS value is higher ,but the runoff quality will be reduced to steady gradually along with the rainfall duration increase;(3) The city roadway runoff is worse than the roadway of university ,because the city roadway runoff involve vehicle n people and the sanitation and material of roadway;(4) Based on the analysis of rainwater quality , the paper provide the process of rainwater treatment for roof, roadway, and lawn.

對(duì)教學(xué)區(qū)內(nèi)不同建筑物，及道路上的雨水徑流水質(zhì)進(jìn)行監(jiān)測(cè)日韩欧美黄片在线一区，得出以下結(jié)論：(1)材料不同3DA片区，徑流雨水中污染物濃度不同，屋頂類(lèi)型不同日韩高清AV在线电影网，徑流雨水中SS濃度亦不同日韩网友自拍区在线观看；(2)初期徑流污染物濃度很高，隨降雨歷時(shí)的延長(zhǎng)亚洲女妇在线观看视频，COD和SS濃度逐漸下降并趨于穩(wěn)定黄色视频在线免费观看国产盗摄；(3)道路污染與路面材料、來(lái)往車(chē)輛www...一级国产、人員流動(dòng)6080毛片、路面衛(wèi)生狀況有關(guān)。市區(qū)道路相比校園內(nèi)道路www.妓女网，水質(zhì)較差欧美精品538在线视频；(4)對(duì)雨水水質(zhì)分析基礎(chǔ)上，分別對(duì)建筑屋頂欧美AA级黄片、道路色色色色色色AAAAAAA、綠地提出雨水利用的處理工藝。

According to the result of artificial rainfall, the character and factors affectedby soil, rainfall, chemicals, slope length, slope gradient and field mangment practices, for rainfall, runoff,infiltration, soil erosion and soil chemicals, such as NO_3~-, NH_4~+, PO_4~(3-), K~+ and Br~-, are investigated. Thedeterminate methods, influence factors and practical application of the mixing zone depth are also researched.The results can enrich the dynamics of soil, water and nutrient transport, evaluate the soil water and fertilizerefficiency, and theoretically benefit the research of agricultural NSP on loess hill slope. 1. According to the surface transport experiments of soil chemicals under the non-satuation soil and watererosion condiction, for adsorbed PO_4~(3-) and K~+, the time of sheet erosion and rill erosion initiation is coincidentthat of chemicals content in surface runoff climbs, and then their abundant export by surface runoff is urged.

本文以黃土坡地為研究對(duì)象国产永久在线更新，通過(guò)模擬降雨試驗(yàn)欧美直播a片，研究土壤因素、降雨因素www.91精品.com、化學(xué)物質(zhì)理化性質(zhì)国产一区二区精品偷斗情、坡長(zhǎng)坡度因素和農(nóng)田管理措施等對(duì)坡地降雨—產(chǎn)流—入滲—土壤侵蝕—農(nóng)田NO_3~-、NH_4~+伦理天堂百度影音在线观看网站、PO_4~(3-)囯产深喉视频一区二区、K~+和Br~-地表遷移的影響，研究非飽和土壤和水蝕條件下混合層深度的確定黄页免费视频大全、影響因素和模擬香港一级A毛片在线播放，探討其在黃土坡地的實(shí)際應(yīng)用，為豐富坡地水分養(yǎng)分遷移動(dòng)力學(xué)99精品A片一级视频、提高旱地土壤水分養(yǎng)分利用率和深化農(nóng)田非點(diǎn)源污染研究提供理論依據(jù)中国一级黄片播放。

Referenced sub-drainage basins were selected in the upper reaches of the Madao main river way, and topographic parameters were obtained using software of River Tools in each sub-drainage. Monthly runoff simulations were then applied to them with the same parameters as Madao catchment, the responses of runoff simulation to topographic parameters were studied, and the Normalization of Runoff-total Length Index were presented. Analyses indicate that NRLI is influenced by source density. NRLI fluctuates tempestuously as source density decreases sharply.

在此基礎(chǔ)上從馬道出水站點(diǎn)沿主河道往上游再選取6個(gè)控制點(diǎn)又爽又黄按摩视频免费，運(yùn)用River Tools軟件提取出各個(gè)控制點(diǎn)控制流域和地形參數(shù)，分析參數(shù)變化情況99久久久国产一区二区三区，并在此基礎(chǔ)上用前面率定好的參數(shù)來(lái)模擬各個(gè)控制點(diǎn)處的出口流量下载黄色一级网站视频，分析徑流對(duì)地形參數(shù)變化的響應(yīng)關(guān)系，并提出了歸一化徑流－河道總長(zhǎng)比指數(shù)美女张开腿黄网站免费直播。

The wavelet variance verification also indicates that the first main period of the runoff of mountainous watershed in the Shiyang River Basin is 30years, and 22years and l5years are the second and third period respectively; 3 Then we also compared the total runoff of mountain watershed with climate factors of Wushaoling which station is in the mountain headstream area, such as precipitation and temperature, the data record that the correlation coefficient of annual runoff and precipitation variation over the upper reaches in the Shiyang River Basin is 0.61 ,which indicates precipitation is the main water recharge of the runoff.

石羊河流域出山口年徑流的周期變化與烏鞘嶺站年降水量和年均氣溫周期基本上都能在同一周期上下浮動(dòng)日本人成精品视频在线，其中出山口年徑流量與烏鞘嶺山區(qū)年降水量相關(guān)系數(shù)為0.61，說(shuō)明地表徑流量主要是由山區(qū)降水補(bǔ)給日本国产一级；年徑流量與山區(qū)年均氣溫變化呈0.28的反相關(guān)xxxxww，說(shuō)明該流域近50年來(lái)出山口徑流與山區(qū)氣溫呈反比，即徑流量隨年均氣溫上升而減少欧美三级黄色，相關(guān)性暫時(shí)不十分明顯在线欧美淫荡片。

This paper reviews the processes in glacier hydrological model in term of runoff generation model and runoff concentration model, analyzes the runoff generation mode from two most widely ablation model (the meteorological factors statistical model and the energy balance model), and enlarges on the runoff concentration model from three sub-models: the surface routing sub-model, the englacial hydrology sub-model and the sub-glacial hydrology sub-model.

從冰川產(chǎn)流和匯流兩個(gè)水文物理過(guò)程出發(fā)，介紹了國(guó)內(nèi)外冰川水文模型的研究進(jìn)展亚洲最大A片，對(duì)目前應(yīng)用最廣的兩類(lèi)消融模型－基于氣象因子的統(tǒng)計(jì)模型和基于物理機(jī)制的能量平衡模型進(jìn)行了分析和討論色欲网站不卡国产；從冰川表面、內(nèi)部以及下部匯流3個(gè)方面闡述了冰川匯流模型所取得的成果求AV在线网站。

G.E.Hubb root is from 0.20mm to 0.50mm, and 95% roots, diameter is thinner than 0.40mm. The total surface areas of roots is 10139.68cm^2, and the surface areas of roots is about 2 to 3 times to soil surface areas in the surface layer. Enlacing sod concretion to soil profile of Eulaliopsis binata G.E. Hubb root and the gigantic adsorption to soil grains of root surface are the mechanism why Eulaliopsis binata G.E. Hubb can reduce null and water loss significantly. The monitoring result from 2003 to 2004 indicates that, when the gradient is 12 degrees, the runoff rate of planting Eulaliopsis binata Retz. G.E. Hubb completely after changing slope land to ladder (PECC, so as the follows is only 49.90m^3/hm^2?yr. and the soil loss rate is 155.78kg/hm^2?yr, however, the runoff rate of fanning and being not change slope land to ladder is 314.29m^3/hm^2?yr that is 6.30 times to PECC ,and the soil loss rate is 3322.50 that is 21.33 times to PECC; When the gradient is 24 degrees, the runoff rate of planting eulaliopsis binata G.E, Hubb in the ridge and border slope land after changing slope land to ladder is 248.04m^3/hm^3?yr and the soil loss rate is 612.00kg/hm^3?yr. the runoff rate of PECC is only 42.44m^3/hm^2?yr and the soil loss rate is 153.75kg/hm^2?yr, however, the runoff rate of ENC reaches to 785.73m^3/hm62?yr that is 3.17 times to PERBC and 18.52 times to PECC, and the soil lose rate reaches to 37503m^3/hm^2 yr that is 61.33 times to PERBC and 244.12 times to PECC.

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The results show that a the variation of annual mean runoff of Huayuankou section exist an intrinsic dynamic mechanism, which is the results of joint action of affecting factor of periodicity and non-periodicity, having obvious chaos characteristic; b the correlation dimension of attractor of phase space is 5.09 and saturation inserted dimension is 14. It shows that to establish a mathematical model of the annual mean runoff system of Huayuankou at least requires 6 independent variables and the required saturation inserted dimension for rebuilding phase space is 14; c the steady estimate of Kolmogorov entropy is 0.14, showing the average predictable time of the annual mean runoff variation of Huayuankou is about 7 years and; d using nonlinear deterministic chaos model is more suitable to describe the variation of annual mean runoff of Huayuankou.

結(jié)果表明：①花園口年平均徑流量變化存在著內(nèi)在動(dòng)力學(xué)機(jī)制欧美黄动漫在线观看，是由周期性和非周期性影響因子共同作用的結(jié)果欧美超级碰碰碰人妻，具有明顯的混沌特性；②相空間吸引子的關(guān)聯(lián)維為5.09性VideOS欧美熟妇喷潮，飽和嵌入維數(shù)為14国产区无码激情，這說(shuō)明要建立花園口年平均徑流系統(tǒng)的數(shù)學(xué)模型，至少需要6個(gè)獨(dú)立變量国产另类亚洲，重構(gòu)相空間所需要的飽和嵌入維數(shù)為14；③Kolmogorov熵的穩(wěn)定估計(jì)為0.14男人的天堂黄色网站，說(shuō)明花園口年平均徑流量變化的平均可預(yù)報(bào)時(shí)間大約為7年久久九九99精品网站成年；④用非線(xiàn)性確定性的混沌模型比完全的隨機(jī)模型更適于描述黃河花園口年平均徑流量的變化。

For Ili River and Irtysh River,because the river runoff are dominant by snow melt runoff,the impact of the glacier shrinkage and temperature rise would be limited with respect to the quantity of the river runoff,but significant on the annual distribution of the river runoff.

對(duì)于伊犁河與額爾齊斯河流域999九九九久久久亚洲精品，未來(lái)冰川變化對(duì)水資源的影響在數(shù)量上可能有限里番全彩爆乳女教师，但會(huì)大大削弱冰川融水徑流的調(diào)節(jié)功能。