loess conservation 中文意思是什麼

loess conservation 解釋
黃土保持
  • loess : n. 【地質學；地理學】黃土。-al, -ial, -ic adj.
  • conservation : n. 1. 保存，維持（健康），保守；保護；保護森林[河道]（等）。2. 【物理學】守恆，不滅。adj. -al
  1. According to the method of participatory monitoring and evaluation, it conducts project monitoring and evaluation on social, economic and ecological benefits of project area in jingning county gansu province of phase world bank loan loess plateau vegetation rehabilitation project in the form of various interviews and discussions of semi - structure, key persons and village groups and questionnaire for approaching the participatory method applied to the monitoring and evaluation of soil and water conservation ecological building projects

    根據參與式監測評估方法，對甘肅黃土高原水土保持二期世行貨款項目靜寧縣項目區的社會、經濟、生態效益等，採用半結構訪談、關鍵人物訪談、問卷調查、村民小組訪談等形式開展項目監評，以探討參與式方法在水土保持生態建設項目監測評估中的應用。
  2. That favorable water environment benefited, not only by the rather large percentage of forest cover with quite strong capacity of water conservation in mountain areas, but also by the comparatively lower gravity of soil erosion in the loess plateau in the middle and lower yellow river basin while numerous lakes and swamps still existed at that time and maintained a huge water storage

    中古華北之所以仍能保持良好的水環境，並非由於彼時降水遠比後代豐富，而是因為山區森林植被仍然良好，具有較強的水源涵蓄能力；黃土高原水土流失不甚嚴重，黃河決溢移徙較少、危害較輕，湖泊沼澤尚未因泥沙淤填而致大量消亡，可以瀦積巨量的水源。
  3. Quaternary environment of loess plateau and soil and water conservation

    黃土高原的第四紀環境與水土保持研究
  4. The impacts of soil and water conservation on river flow and soil - hydrology of jia - lu - he, tu - wei - he, pian - guan - he and qiu - shui - he catchments have been analyzed by the simulation and on - spot measuring methods according to data of during 1950 ' s to 1990 ' s. the selected catchments of the above four all are in the key area of soil and water conservation on the loess pleatu. the main results are as follows. the trend, reasons and critical year of annual river flow " change have been researched by rank correlation and maximum deviation division

    本文以黃土高原水土保持重點區的佳蘆河、禿尾河、偏關河和湫水河等四條流域為代表，採用定量與定性、模型模擬與實測對比相結合的方法，系統分析了上世紀50 90年代時段內水土保持對河川徑流及土壤水文的影響，取得主要結果如下：採用秩相關和極差分割等定量評價方法，分析了四條支流徑流量變化趨勢、變化原因及發生明顯變化的臨界年份。
  5. An analysis on influence of social economic environment of the loess plateau to soil and water conservation ecological building

    黃土高原地區社會經濟環境對水土保持生態建設的影響
  6. The second part give an all - around demonstration on eco - economic backgrounds of hilly gullied loess region and concluded that small watersheds are dominant landscape units that enable them to be basic for regional management and development. ecological and economic strategies for regional development are also put forward : soil and water conservation to improve ecological environment should be first - line task the region shoulders in the new century. " grain for green " policy provides chances of accelerating development for the region

    第二部分綜合闡述了黃土高原丘陵溝壑區的生態經濟背景，指出：小流域為黃土丘陵溝壑區的優勢景觀單元，是區域治理與發展的基本單元：並提出區域治理與開發的生態與生產定位：區域應以水土保持、改善生態環境為新世紀的主要戰略任務，國家的退耕還林草政策為區域加大環境治理提供了新的契機；在生態環境明顯改善的基礎上實現糧食自給，實行農牧結合，重點發展畜牧業，有選擇的發展經濟林果業。
  7. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  8. Interaction of soil and water conservation measures with soil water in the loess plateau in china

    黃土高原土壤水分與水土保持措施相互作用
  9. ( 4 ) water - soil curing and using techniques of large opencast coal mine within loess area in our country have been divided into three types : water - soil safety techniques, water - soil conservation and water - soil recycling use techniques

    （ 4 ）明確將我國黃土區大型露天謀礦水土整治和利用技術劃分為水土安全調控、表層巖土水土保持和水土資源化利用三個階段
  10. 2. on the basis of analyzing experimental data for slope land of loess plateau in different slope gradient and rain intensity and soil and water conservation tillage measures, using curve - fitting techniques, a soil infiltration rates model was woke out, the accuracy of the model is tested by a series of experiment data, the result of these indicate that the soil infiltration rates model is accurate and has good stability for slope land of loess plateau. 3. using soil infiltration rates and runoff time and wetting frontal surface depth of soil infiltration reflect effect of factor affecting soil infiltration rates

    （ 3 ）採用土壤穩定入滲速率、坡面開始產流時間、土壤濕潤鋒面下滲深度三個指標來反映坡耕地土壤入滲影響（土壤性質、土壤初始含水率、地面坡度、降雨強度、積水深度、水土保持耕作措施等）因素效用大小，建立了各因素與三個指標的關系模型，詳細分析了不同水土保持耕作措施強化土壤入滲的影響，其中等高耕作作用最為顯著，其次是人工掏挖和人工鋤耕。
  11. Based on the measured data and the model of plotted watershed hydrology, the benefits of water reduction by different harnesses of soil and water conservation are firstly separated in watershed scale, which are the basis of evaluating the effect of rebuilding ecological environment of the loess plateau on the water resources of the yellow river

    在實測資料的基礎，藉助流域網格劃分的模型計算方法，首次在流域尺度內將水土保持工程措施和生物農業措施在減少地表徑流中的作用分割開來，從而為定量評價黃土高原以林草植被建設為主的生態環境治理對黃河流域水資源的影響提供數據基礎。
  12. Check dam is the main measure for soil and water conservation, and its benefit in water and soil loss is remarkable, especially in the most seriously eroded first sub - region of hilly - gully loess plateau

    摘要淤地壩是水土保持治理的主要措施之一，特別是在水土流失最為嚴重的黃土丘陵溝壑區一副區，其效益更為突出。
  13. Long - term ’ s soil and water conservation practice experiences show that, the check - dam is the key measure of soil erosion and water loss managements in the loess plateau region

    長期的水土保持實踐經驗表明，淤地壩是黃土高原地區水土流失治理的關鍵措施。
  14. Analysis on soil and water conservation benefit of level terrace under different rainfall condition in loess hilly region

    黃土丘陵區不同降雨條件下水平梯田的減水減沙效益分析
  15. The main reason of soil and water losses on the loess plateau was analyzed with considering the natural and man - made factors. in accordance with the real situation in our country, the author expounds the harm of soil and water losses, puts forward some measures, shows us a magnificent prospects on soil and water conservation

    從影響水土流失的自然因素和人為因素入手，分析了水土流失產生的主要原因，根據我國水土流失的情況，剖析了水土流失的危害，並提出了相應的措施，展望了水土保持的美好的前景，確保我國水土保持治理工作的順利進行。
  16. Behavior of peasant households on soil and water conservation in gully area of loess plateau

    黃土高原丘陵溝壑區農戶水土保持行為研究
  17. By investigating and analyzing typical watershed on gully and rolling loess region, and gullied loess plateau, the paper preliminarily defines the measure and combination of comprehensive harnessing ways of soil and conservation

    摘要通過對黃土高塬多沙粗沙區涉及較多的黃土丘陵溝壑區和黃土高塬溝壑區幾條典型小流域和現有治理模式的調查分析，初步確定了多沙粗沙區兩個主要侵蝕類型區的水土保持措施組合方案。
  18. By investigating and studying on the spot and consulting lots of data, this paper set up some vegetation - building technique patterns in physiognomy sections in loess plateau according to the theoretical knowledge of ecology, landscape ecology, developing and planning on district and soil and water conservation etc., as well as the facts of " the project of conversion of cultivated - slope - land into forestry and grassland " and the economic development characters in this area

    摘要通過實地踏查、調研和大量資料分析，綜合運用生態學、景觀生態學、區域發展與規劃以及水土保持學等多學科理論，結合退耕還林還草與經濟發展的客觀實際，構建了黃土高原不同立地條件下的植被營建技術模式。
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