soil water retention 中文意思是什麼
soil water retention
解釋
土壤水分保持-
With the development of human society, because of the lack of sustainable utilization consciousness, and the eager for quick success and instant benefit, the black earth suffered excessive cultivation and management, causing the reduction of its recycled ability, decrease in organic content, porosity ratio, fertility dropped and the properties of water retaining and water retention, which make the black soil harden and degenerate seriously
但是隨著人類社會的發展，在缺乏保護和可持續利用意識、急功近利思想影響下，黑土遭到過度墾殖和掠奪式經營，人類對其活動范圍遠遠超過了其再生能力，導致有機質含量減少，肥力下降，孔隙比減小，保水持水能力降低，土壤板結，黑土嚴重退化。 -
The trade - off problems arising from ecosystem modification is ubiquitous in sabah - absolutely polluted rivers, beautiful oxbow lakes eaten away by invasive alien freshwater hyacinths or salvinia molesta from south america and their resultant death through triplication, sedimentary blooms encroaching mangroves, coastal fishing grounds, unprecedented long and deeper flooding in the major river basins. take the ecosystem services away, mankind is as well dead. for instance, nutrient formation needed by man, water cycling, soil formation and soil retention, pollination of plants, resistance to invasive species, regulating climate and pests as well as pollution control by ecosystems are some of the critical ecosystem services
其實，沙巴最迷人的度假特色，還是周遭豐富繽紛的海底生態資源，馬來西亞7座海洋公園，就有4個位在沙巴沿海區域，包括亞庇西北165海裡外的拉央拉央島layang - layang沙巴東南處的馬寶島mabul和卡巴賴島kapalai沙巴和汶萊灣岸外以北的納閩labuan ，以及亞庇海外由5座小島構成的東姑阿都拉曼國家公園tunku abdul rahman park islands 。 -
Soil quality - determination of unsaturated hydraulic conductivity and water retention characteristic - wind ' s evaporation method
土質.非飽和水滲導性和水保持特性的測定.風蒸發法 -
Soil quality - determination of unsaturated hydraulic conductivity and water - retention characteristic - wind ' s evaporation method
土質.非飽和水滲導性和水保持特性的測定.風的蒸發法 -
The result indicated that straw mulching could increase soil porosity by 2. 88 % - 5. 76 %, reduce soil bulk density by 1. 86 % - 3. 73 % and the content of soil water with straw mulching was higher than that with no straw mulching treatment ( ck1 ) at different growth stage, improve water - stable aggregate ; and increase soil organic matter, available n, available p, available k, improve soil perviousness and soil retention of water and fertilizer
研究結果表明，與對照ck1 ，相比，秸稈覆蓋可使土壤總孔隙度增加2 . 88 % ~ 5 . 76 % ，土壤容重降低1 . 86 % ~ 3 . 73 % ，並且各生育期覆蓋處理的土城含水量均比對照高，並且秸稈覆蓋還田對促進土壤團粒結構形成具有較大作用，改善了土坡通透性和保水保肥性；同時秸稈覆蓋還田使土壤有機質、全氮、速效氮、速效磷、速效鉀得到明顯提高，從而培肥地力。 -
The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics - like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic ; the empirio - equations of soil water retention curve including temperature and the empirio - equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better
本文以水熱耦合效應為主題，基於研究對象的動態變化特徵，應用化學動力學原理，建立了含水、熱因子以及水熱耦合效應的土壤水分蒸發、肥料氨揮發動力學方程，以及施入土壤中的尿素轉化為銨態氮的動力學型方程；為使水勢?含水量關系式更好適應變溫條件應用的要求，建立了含溫度因子直接表徵土壤持水曲線的經驗方程，以及含溫度因子的穀苗葉水勢與土壤含水量關系經驗方程。 -
Soil quality - determination of the water - retention characteristic - laboratory methods
土壤質量.水保持特性的測定.實驗室法 -
Soil quality - determination of the water retention characteristics - laboratory methods iso 11274 : 1998
土壤質量.水分保持特性的測定.實驗室法 -
Soil quality - determination of unsaturated hydraulic conductivity and water - retention characteristic - wind ' s evaporation method iso 11275 : 2004
土質.非飽和水滲導性和水分保持特性的測定.風蒸發法 -
The effect of soil texture and soil structure on water retention and hydraulic conductivity has been analyzed and discussed with fractal theory. the results as follow : 1
運用分形理論探討了土壤質地及結構狀況對水分保持及運動的影響，得出以下結論： 1 -
The relationship of soil particle - size distributions and soil water retention characteristics, saturated and unsaturated hydraulic conductivity were studied in the lab
本研究對陜西四種不同質地土壤的粒徑分佈與水分特徵曲線及飽和、非飽和導水率的關系進行了研究。 -
5. the empirio - equations of soil water retention curve including temperature is developed on the basis of the empirio - equations of soil water retention curve without temperature by studying the quantitative relation between water absorption capacity and soil water content. in addition, the empirio - equations including temperature of millet seedling and soil water content is got
5 .通過對不同溫度下土壤水吸力與土壤含水量關系的研究，依據土壤持水曲線經驗方程e = as一，建立了含溫度因子直接表徵土壤持水曲線的經驗方程e = e 『 rbt ， s一『 。 -
The land resources of karst region in chongqing is mainly rock mountain and slope land, with serious soil erosion, converse vagetation succession and low cover rate, lesser water retention and lacking water, where ecosystem is difficult to recover after vegetation being destructed, land coming forth landification and sandification heavy
市境內石灰巖山地土地資源以石山坡地為主，土壤侵蝕嚴重，發生逆向演替，植被逆向演替，覆蓋率低，保水能力差，乾旱缺水。在石灰巖區，植被破壞后，土地大量石化、砂化，生態環境已很難逆轉。 -
In low matric potential state, the a & p model can be use to predict water retention characteristics, but in high matric potential state, it cannot get good result. in addition of soil pore connectivity, to correct the a & p model, it can get good result in whole water content range
但在高吸力段a & p模型預測的結果與實際偏差較大，考慮到土壤孔隙實際聯通狀況，修正a & p模型，使供試的四種在整個含水量范圍對土壤水分特徵曲線都得到了較好的擬合。 -
It can be use as a parameter to describe the variety of soil texture. 3. on the basis of the a & p model, soil particle - size distributions and soil bulk density data is translated to soil water retention characteristics
A & p模型得出的四種土壤的水分特徵曲線，在低吸力范圍段可以較好反映土壤實際的土水勢與含水量之間的關系。
分享友人