runoff response 中文意思是什麼
runoff response
解釋
徑流反應-
This scheme integrates universual data accesss technology of microsoft, which plays a more and more important role in three - lay c / s ( client / server ) and uses the technology of ado ( active data access ), adopts the asp script language in display the results and uses stored procedure of sql server in databases design. in the system of b / s, client realizes a high efficient access to the server database through displaying diversified active controls in browser and using ado to access the data source. the disposing of data accures under the database not in the font of this system. this kind of scheme cannot only bring the system a higher real time response, but also decrease data runoff of the networks, lower the possibility that web server becomes bottleneck of the system and make the system more transplantable
當前的web數據庫訪問技術正處于發展階段，針對這種情況，本文通過分析當前各種流行的web數據庫訪問方案的優缺點，結合在三層次的c / s系統中扮演越來越重要的角色的中間件技術，採用了microsoft公司所提出的一致數據訪問技術，利用ado控制項，結合當前的asp語言，底層數據庫採用了sqlserver7 . 0的存儲過程技術，設計了一種自己的web數據庫訪問方案，即在browser / server系統當中，客戶端通過顯示在瀏覽器中的各種activex控制項，通過了ado連接數據庫，數據的處理利用了存儲在數據庫內部執行，實現對後端數據庫的高效訪問，並且這種方案在給系統帶來較高的實時響應性能的同時，減少了網路數據流量，降低了web服務器成為系統瓶頸的可能性，也增強了系統的可移植性。 -
When soil antecedent condition is dry and the initial rainfall intensity is high, peak surface runoff also considerably lag behind that of rainfall, because of the formation of temporary relative impermeable top layer ; b ) surface runoff is controlled primarily by infiltration - excess runoff mechanism under unsaturated condition ; the major fraction of surface runoff are dominated by saturated infiltration - excess runoff response, only a small fraction by return flow mechanism when soil is saturated ; c ) subsurface flow is dominated by saturated runoff mechanism, and the duration of subsurface post the rainfall end is dependent upon rather the soil properties than the rainfall characteristics ; d ) subsurface flow intensity in cultivated soil layer ( 0 ~ 20cm ) is high up to 35mm / h when rainfall intensity is up to 120mm / h, indicating the existing of macropores and pipe flow in cultivated layer
2 ）耕作制下紫色土的產流主要機制是： 1 ）當雨前土壤含水量未達到飽和狀態時，表面產流起始時間有明顯滯后現象，這與紫色土的快吸水性和較多非毛管孔隙密切相關；當雨前土壤較乾燥，降雨初期雨強較大時，易形成臨時相對不透水表層，表面產流峰也有明顯滯后現象。 2 ）表面徑流的產流方式主要是超滲產流，當土壤達到飽和狀態后，有四川大學博士學位論文小部分回歸流發生，但主要是飽和超滲產流發生，因為紫色土的相對不透水層和其它透水障礙層不明顯。 3 ）壤中流主要是飽和產流，與降雨過程有明顯的滯后，而且雨停后的壤中流產流歷時與降雨特徵無關。 -
Based on the forecasting theory of the optimization weighted array, an optimization weighted array model with a runoff response linear model and a time sequential model is developed to predict daily runoff, and the optimal weighting coefficients are derived by the least square method
摘要根據最優加權組合預測原理，建立了徑流響應線性模型和時間序列模型的優化加權組合模型，以預測日徑流，依據最小二乘法原理確定其優化加權系數。 -
Normally water resources is affected by human activities and climatic change, but it is affected mainly by climatic change in runoff forming regions located in the high and middle mountainous area in the northwestern china. river runoff in the hexi inland arid region all originates from the qilian mt. area and the change of mountainous runoff resulted from global weather warming up and will bring an important effect to the development of society and economy in the hexi region. so the response on mountainous runoff and its changing trends are analyzed on the basis of the measured data of precipitation, air temperature, and discharges observed from some weather and hydrologic stations in the studied area. the results show that seasonal variation of mountainous runoff in the hexi inland region is mainly affected by the river ' s geographical location and supply source, and the yearly change by precipitation and that in the west of the region by air temperature besides precipitation. there are some obviously regional differences in the influences of climatic change on surface runoff in the hexi inland arid region, that is, rivers runoff in the west of the hexi area have been increasing and rivers in the east part have been decreasing, and the rivers runoff in the central part presented slowly increase trend, such as the heihe river, but it is not quite obvious
一般情況下，水資源的變化主要受氣候變化和人類活動的影響，但在位於我國西北內陸乾旱地區的中高山地帶，徑流的形成主要受前者的影響.甘肅省的河西內陸乾旱區是該省重要的工農業生產和經濟開發區，這里各項社會和經濟活動與出山徑流的變化都有著十分密切的關系.因此，筆者根據有關水文氣象臺站的降水、氣溫和徑流觀測資料，分析了以黑河、昌馬河、西營河等主要河流為代表的河西內陸區出山徑流的變化特徵與規律.結果表明，河西內陸區出山口徑流的季節變化主要受地理位置和河流補給來源的影響，而年際變幅則受山區降水量年際變化及變幅的影響十分明顯.目前，梨園河以西河流水量處于上升階段，梨園河以東的河流則處于下降的階段;以黑河幹流鶯落峽水文站年徑流為代表的走廊中部地區的出山口徑流正處於1990年開始的枯水段的上升段.但總體而言，河西內陸乾旱區出山口徑流的變化相對比較穩定.預計今後若干年內，河西內陸乾旱區東段河流出山口徑流的變化以偏枯為主，中段、西段河流出山口徑流的變化以平水或平水偏豐為主 -
Coupling vegetation dynamics at multiple scales is essential to explore the mechanisms of water and sediment yield response to vegetation changes such as vegetation reestablishment, development, succession, distribution, and management practices - we reviewed literature on advances in studying the processes and mechanisms of the vegetation influence on runoff and sediment production in relations to vegetation growth, vegetation succession, vegetation patterns and distribution, as well as afforestation and deforestation
由於植被自身的生長發育以及受自然因素和人為干擾的作用，植被變化具有多尺度性；由於受流域水文環境的異質性和水文通量的變化性的影響，流域水文過程也同樣具有多尺度性。 -
Response of runoff from the northern slope of the qilian mountain to global climatic changes
祁連山北麓出山徑流對氣候變化的響應 -
Based on the longtime hydrological observation records during the years from 1956 to 1995, properties of precipitation of weihe basin in shaanxi province of different time scale ( including month, year and decade scale ) is analyzed by the method of contrasting properties, correspondingly change characteristics of runoff are also discussed by means of statistics, hence response relationship between runoff and precipitation is revealed, and the main reasons affecting amount of runoff are pointed out
摘要根據1956 - 1995年的實測水文資料（降水和河川徑流量資料） ，採用特徵值對比方法，對陜西省境內渭河流域不同時間尺度內降水特徵進行分析，並對流域內多年徑流變化也做了相應的統計分析，從而揭示河川徑流對降水變化的響應關系，並確定出河川徑流變化的主要原因。 -
Global climatic change would cause the response of ecosystem. in arid and semi - arid regions such as shaanxi - gansu - ningxia region, what is the response of regional river runoff ? would it cause river runoff to increase or reduce
陜甘寧地區處于對全球氣候變化較敏感的中緯度地區，是東亞夏季風邊緣帶，氣候乾旱不穩定，其主體部分為黃土高原中部的丘陵溝壑區，是世界上水土流失最嚴重的地區，生態環境十分脆弱，目前氣候暖干化趨勢明顯。
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