It proposed to establish perfect ecosystem function conservation monitoring system, to conduct some ecosystem rehabilitant and build up engineering project, and achievement; to solidify the results of return polder back to lake, and setup immigration residents. And to improve the flood regulation function capacity; Wetland and the biodiversity can be protected effectively; Basically to curtail degradation of ecosystem function, and ecological environment, people's living condition and quality will be improved greatly.

Long—term objective ：建立完善的生態(tài)功能保護(hù)區(qū)監(jiān)管體系日本免费三网站；實(shí)施一批生態(tài)恢復(fù)和環(huán)境治理工程国产一区二区久久精品，并取得一定效果；退田還湖、平垸行洪和移民建鎮(zhèn)的洪水治理成果得到切實(shí)鞏固黄色网页在线欧美，調(diào)蓄洪水的生態(tài)服務(wù)功能得到加強(qiáng)91看片婬黄大片涩爱；濕地及其生物多樣性得到有效保護(hù)；基本扭轉(zhuǎn)洞庭湖區(qū)生態(tài)環(huán)境退化的趨勢(shì)免费无码又爽又刺激A片涩涩，湖區(qū)生態(tài)環(huán)境得到明顯地改善最黄最黄的xxxx视频，人民群眾的生活水平和生活質(zhì)量有所提高。

The author analyzed the reasons of damage caused by "03·8"flood occurred in Weihe River from the general situation of the lower reaches of the river, the feature of the flood and the flaws of the dike, in hoping to give the reference for riverway engineering of the lower reaches of the Weihe River in the future.

從渭河下游的概況超碰人妻久久、"03·8"洪水的特點(diǎn)和渭河堤防工程的不足等方面對(duì)渭河"03·8"洪水造成的災(zāi)害原因進(jìn)行初步探討黄色网站在线播放，以期對(duì)今后渭河下游的河道治理工程提供參考。

As the country's four major river flood control, one of the Yongding River is the city's main flood discharges from the river, the main flows through the Shijingshan District, Fengtai District, and Mentougou.

作為國(guó)家的四個(gè)主要河流洪水控制欧美一级婬片日本高清视，其中永定河是城市的主要排放洪水的河流在线综合亚洲欧美日韩，主要流經(jīng)石景山區(qū)，豐臺(tái)區(qū)和門頭溝區(qū)国产精品毛片无码,啦啦啦。

Based on field investigation and historical data analyzing, the characteristics and causes of flood disasters of Qinba Mountain area were discussed in this paper. Take the harnessed Watershed and unharnessed Watershed as comparative study objects, through analzing the two typical watershed land using and rainfall-runoff dynamic data, combinating the in-situ soil infiltration field testing, a rainfall-runoff model of small watershed which was appropriate to Qinba Mountain areas was built based on improving the SCS model. And then the influence of soil and water conservation measures on the flood processes was analysed.

本文通過野外調(diào)查與歷史調(diào)查資料91国在线国内播放女神学生，闡述了秦巴山地區(qū)洪水災(zāi)害的特點(diǎn)及成因，以治理流域與未治理流域?yàn)閷?duì)比研究對(duì)象自拍日韩葡萄影院在线观看免费视频，通過對(duì)兩條典型流域的土地利用狀況分析在线视频99re，結(jié)合土壤入滲原位測(cè)試，充分利用降雨99久久国产精品无码免费、徑流動(dòng)態(tài)觀測(cè)資料日韩18禁图片区综合，以SCS模型模擬降雨徑流為重點(diǎn)，建立適合于秦巴山地區(qū)小流域的降雨徑流計(jì)算模型男生带套套会不会弄出血，分析水土保持措施對(duì)于洪水的作用過程无码一级毛片一区二区视频r区。

Falling into a sleeplike condition, he suddenly felt as though he were sinking in a mighty flood of water, and the rush and roar soon took musical shape within his brain.

他進(jìn)入了似睡非睡的朦朧狀態(tài)毛片网址在哪里，驟然間感覺到自己仿佛掉進(jìn)了滔滔洪水之中女人被男人桶30分钟动态图，不斷在下沉，很快美国a级大黄片，洪水的沖擊聲和咆哮聲以音樂的形式呈現(xiàn)在他的腦海里国模自拍日韩在线播放视频网站免费。

The study result indicates that flood usually oc curred in the climate transition period. Based on the result, the author believe s that the appearance of flood may be in a certain relation with the abrupt clim ate event in the process of the global climate evolution.

同時(shí)在研究中還發(fā)現(xiàn)，古洪水多發(fā)生在氣候轉(zhuǎn)型期性爱视频的网站，因此筆者提出古洪水的發(fā)生可能與全球氣候變遷歷史中的突變事件有某種必然的聯(lián)系天天日天天操天天日。

In fact, the tributary acts as a conditioning reservoir, which is an important factor to sudden flood caused by dam collapse.

在處理洪水演進(jìn)過程中支流與干流洪水的相互影響時(shí)，以前的模型僅將支流流量迭加到干流同時(shí)刻的流量上久久艹综合网。

Within a single storm, process of runoff and sediment seem the same in outsets of different scale watersheds, about runoff rate is 1.27 m/s, concentration of sediment tend to change little and nearly 700 kg/m~3, this determine the relationship between water and sediment, or the relation reflect study area situation, for example, soil and event storm and sediment and so on. In fact this program established scale transition partly.(2)The loess plateau in north china is located in the middle yellow river basin, and records some of the highest erosion rates in the world. The hilly part of the loess plateau is one of the most severely eroded regions of the loess plateau.

基于此本論文選擇陜北大理河流域?yàn)閷?duì)象欧美A片播放，依據(jù)黃河支流的水文資料，分析了不同尺度大小流域的水沙侵蝕資料欧美激情视频91，取得以下結(jié)果：(1)發(fā)現(xiàn)就次暴雨洪水而言亚洲区欧美性爱，各尺度流域出口的徑流泥沙過程都表現(xiàn)為洪峰陡漲陡落沙蜂陡漲緩落，含沙量隨流量增大到一定程度1.27m／s時(shí)變化趨于穩(wěn)定欧美A片123区，保持在400kg／m~3以上一级黄色视频无码A片，決定了該地區(qū)水沙之間的關(guān)系中文精品日韩欧美在线观看免费，不同尺度大小流域出口暴雨洪水的水沙關(guān)系在一定程度上是一個(gè)區(qū)域特征值。

It is safe and precise for configuring pressure chamber and inlet well.Based on the tests and theory calculations, the paper demonstrated that computing tilting moment and resisting moment could attain self-tilting weirs tilt behavior.

自潰式迷宮堰具有超泄能力強(qiáng)且可傾覆的特點(diǎn)爱搞网站无遮挡，通過調(diào)整進(jìn)水井頂部高程和底板配重控制傾覆時(shí)機(jī)小黄片A片，具有非常高的安全度和精確度，能滿足常遇洪水和超標(biāo)準(zhǔn)洪水的防洪要求欧美一级作爱片。

Massive floods that struck the southern Mexican states of Tabasco and Chiapas in late October and November left vast stretches of land completely submerged — an estimated 80% of Tabasco was under water at one point, and as many as one million residents were affected by the floods.

今年10月底和11月日本亚洲国产精品麻豆www，洶涌的洪水侵襲了墨西哥南部的塔巴斯哥和恰帕斯，致使陸地變成了水世界日韩美美女综合视频，大概塔巴斯哥有80%土地被水淹沒人人摸人人操人人超爽，近100萬居民的生活受到了洪水的影響。