watershed model 中文意思是什麼

watershed model 解釋
流域模型
  • watershed : 〈英國〉分水嶺；〈口語〉流域。
  • model : n 1 模型，雛型；原型；設計圖；模範；（畫家、雕刻家的）模特兒；樣板。2 典型，模範。3 （女服裝店僱...
  1. A binary tree - based and dyadic indicated codification method is proposed in the digital watershed model ( dwm )

    摘要在數字流域模型中提出了一種基於二叉樹理論，並以二元形式表示的河網編碼方法。
  2. The dissertatio n constructs the index system, introduces the coefficients of development, coordination, fairness, and the coefficient of sd, which is composed by the former three and can reflects the sd overall strength of watershed, brings forward the quantative criteria of in order that the research of wrcc is based on the good watershed ecology and environment, the dissertation, according to the ecological appropriate theory, builds the logarithm normal distribution model about the relation between the growth of natural vegetation and the depth of groundwater ; based on this relation model, proposes a quantitative method of ecological water requirement ( ewr ) of natural vegetation in arid area, which utilizes the results of rs technique and the spot testing data of vegetative physiology demand

    針對流域特點建立了基於水資源的流域可持續發展評價指標體系，引入發展系數、協調系數、公平系數，以及由其構成的衡量水資源支撐社會可持續發展綜合水平與能力的可持續發展系數，提出了可持續發展的定量判別方法。為保證在良好生態的前提下進行水資源承載能力研究，論文根據生態適宜性理論，建立了乾旱區典型天然植物生長與主要環境因子的偏態單峰對數正態分佈模型。基於此關系模型，利用遙感技術成果以及植物生理需水的現場實驗數據，提出了乾旱區天然植被生態需水量計算方法。
  3. Model of comprehensive harness of soil and water erosion in deka river small watershed

    得卡河小流域綜合治理開發模式
  4. Iv ) as a quantitative index of wateshed topography, topograph fractal demension can represent surface shape information of watershed topography in the round. reseach find that watershed model and actual watershed show good fractal character

    通過研究發現：流域模型和實際流域地形都具有很好的分形特性，地形分形維數與流域地貌的發育過程有關，代表著流域的發育程度。
  5. The thesis, taking fen river watershed as an example, works out its water resources division that has reference value for fen river consumers by applying the model

    筆者運用這一模型對山西汾河流域水資源進行了具體的個案探討，並進行了水資源分配計算，其結論對汾河沿途各地用水戶用水具有一定的參考應用價值。
  6. The proportion that the sediment yield of the main gully accounts for the total sediment yield of the experimental watershed model is from48. 7 % to 66. 6 %, and the proportion that deposition sediment yield of main gully accounts for the total deposition sediment yield of the experimental watershed model is from64. 9 % to 99. 4 %. the developing process of topographic feature of the experimental watershed model. expanding the gully width and cutting down the gully bottom are the two chief forms of the topographic feature development

    流域模型地貌形態發育過程溝谷擴展和下切是流域模型地貌形態發育的主要形式，溝谷擴展發育主要發生在發育活躍時段，主溝所佔溝谷總面積比例在流域模型溝谷擴展發育過程中保持在60以上：主支溝下切發育在發育初期和發育活躍時段前期表現最為劇烈，其橫剖面為v字形，在發育初期和穩定時期時段呈現淺u字形和底部較為平坦的梯形，主溝的橫剖面發育明顯優先於各支溝。
  7. The study on soil co2 concentration redounds to understanding and illustrating the inner mechanism of caco3 deposition process and provides experiment data for caco3 deposition model development. based on the two years located research and out - door investigation in zhuanyaogou watershed, hequ county, the north west of shanxi province

    研究土壤co _ 2濃度在剖面上的分佈和變化規律，有助於認識和解釋黃土高原鈣積過程的內在機制，以土壤co _ 2濃度變化的實測數據，建立能更準確描述鈣積過程的模型。
  8. Research of small watershed water erosion prediction model based on svm

    基於支持向量機的小流域水蝕預報模型研究
  9. Distributed water erosion prediction model for small watershed in loess plateau

    黃土高原小流域分散式水蝕預報模型
  10. Windows 2000 professional was used here for operating system, and arc / info 8 from esri company was used for the work flat floor. this study builds the spatial database of yanjia river watershed, which includes digital elevation model, watershed drainage network, soil, land use et al

    本研究以windows2000professional為操作系統，採用esri公司的地理信息系統產品arc info8為工作平臺，建立了晏家河流域的空間數據庫，包括流域數字高程模型、流域水系、土壤、土地利用等空間信息。
  11. Taken yanjia river watershed as an example, this study extracted watershed digital characters from dem, and simulated rainfall - runoff with the rainfall - runoff model based on gis and wms. the main contents and results include : ( 1 ) the building of the spatial database of watershed

    本研究應用地理信息系統和wms模型系統，以三峽庫區晏家河流域為例，由dem提取流域數字特徵，再與降雨徑流模型有機結合進行了降雨徑流數字模擬研究，主要的研究內容和結果包括以下幾個方面： （ 1 ）建立了流域空間數據庫。
  12. Influence of subdivision of watershed on distributed hydrological model

    亞流域劃分對分散式水文模型模擬結果的影響
  13. Discussion on reasonable subdivision level of watershed for distributed hydrologic model

    分散式水文模型亞流域合理劃分水平芻議
  14. In the late part of the active developing period, the temporal variation of sediment concentration and sediment transport ratio of each rainfall can be expressed by exponent function and the variation presents quadratic polynomial function in the stable developing period. the spatial variation character of sediment yields with space of the experimental watershed model. the active position of soil erosion and sediment yield of the experimental watershed model changes from the downside to the upside with the developing process of the watershed model

    流域模型侵蝕產沙空間變化特徵侵蝕產沙的活躍部位隨流域模型發育過程呈現由流域模型下部逐漸向上部發展特徵，其中流域模型下中部為發育初期時段和發育活躍時段侵蝕產沙的活躍部位，流域模型上部是發育穩定時段侵蝕產沙的活躍部位。
  15. In the early developing period and active developing period, the downside and middle part of the experimental watershed model are the active positions of soil erosion and sediment yield respectively, and the upside of the experimental watershed model in stable developing period of the watershed model. the main gully plays dominant role in the sediment yield process of the experimental watershed model

    主溝在流域模型侵蝕產沙過程中居於主導地位，主溝的產沙量占流域模型總產沙量比例保持在48 . 7 - 66 . 6之間，在主溝的泥沙沉積量所佔流域模型總泥沙沉積量的比例也保持在64 . 9 - 99 . 4之間。
  16. Based on the fractal character of the small watershed topographic feature, the spatial and temporal variation character of sediment yield of the watershed model, the dynamic developing process and fractal character of the topog raphic feature of the watershed model, and the coupling relationship between the sediment yield and the topographic feature of the watershed model are " studied by simulate experiment, fractal theory, high precise photogrammetry and gis technology. the validation research is conducted in chabagou watershed where the observation data of rainfall, sediment and runoff for 11 years is collected. the study provides new theory and method for the topographic feature quantitative research in the prediction model of small watershed sediment yield

    本文依據流域地貌形態所具有的顯著分形特徵，從模擬實驗出發，利用分形理論和方法，結合高精度攝影測量和gis技術，對流域模型侵蝕產沙時空變異特徵、地貌形態發育過程及其相應的分形特徵、流域模型侵蝕產沙與地貌形態耦合關系進行了深入研究，並以具有11年降雨泥沙徑流觀測資料的岔巴溝流域為例進行了驗證研究，為實現從單坡面侵蝕產沙模擬、預報向流域侵蝕產沙模擬、預報轉化過程中地貌形態參數的提取提供了理論和方法，為黃土高原小流域水土流失綜合治理提供了科學實踐依據。
  17. The following parts are the research results : the temporal variation character of sediment yields of the experimental watershed model. the average sediment transport ratio of every rainfall takes on obvious period character with the developing process of the experimental watershed model. early developing period ( from the first rainfall to the fifth rainfall ), active developing period ( from the 6th rainfall to the 18th rainfall ) and stable developing period ( from the 19th rainfall to the 25th rainfall ) are defined

    流域模型侵蝕產沙時序變化特徵次降雨平均輸沙率隨流域模型發育過程表現出明顯的時段性，即發育初期時段（第一場到第五場降雨） 、發育活躍時段（第六場到第十八場降雨）和發育相對穩定時段（第十九場到第二十五場降雨） 。
  18. Iii ) the result from simulating rainfall on watershed model indicats that changes of projective area, surface area and volume represented development of watershed physiognomy. volume of model body decreased and projective area and surface area increased with developing process of watershed model. when development of gully trending to stablization, projective area become stable and surface area changed fluctuantly

    （ 3 ）流域模型的模擬降雨實驗觀測結果分析表明：流域模型地貌的發育演化主要體現在其投影面積、表面積和相對體積的變化上；流域模型投影面積和表面積在整個試驗過程中一致增大，當溝道發育逐漸趨于穩定時，投影面積變化也趨于穩定，表面積則呈現出波動性變化。
  19. Topography fractal dimension related with process of development of watershed physiognomy and represented degree of watershed development, v ) sediment yield intensity of watershed model reflected erosion characteristic of watershed model in different development phase. simulating experiment indicated that sediment yield intensity took on the trend that they changed from small to big then decreased gradually. the relationship of average sediment transport rate and sediment yield rate per mm rainfall with topography fractal demension is expressed by gaussian model and this model is similar with relationship between volume and surface area

    （ 5 ）流域模型產沙強度的變化反映了流域模型在不同發育階段的侵蝕特徵，模擬試驗研究結果表明：在整個流域模型地貌地貌的發育過程中，其產沙強度呈現由小到大，然後又逐漸減小的總體趨勢，流域模型單位降雨產沙率及平均輸沙率與地形分維數表現為gaussian模型關系，其關系形式與結論3中相對體積和表面積之間關系相似，進一步說明了以地形分維數表達地形變化的合理性。
  20. It shows that topograhy fractal demension is reseanable in describing change of topography. based on this model and after introducing runoff erosivity factor, sediment yield model of watershed model was setup by using multi - regression analysis method. vi ) the relationship model between watershed topography parameter and

    該關系模型以地形分維數為地形量化參數，以徑流侵蝕力代表徑流侵蝕土壤和搬運泥沙的能力，揭示了地貌形態因素和徑流侵蝕力與輸沙模數之間的內在關系;但此關系模型僅考慮了地形因子，還需考慮土壤、植被以及流域治理因素等綜合影響。
分享友人
分享到 Line

分享到臉書