覆土高度 的英文怎麼說

中文拼音 [fùtǔgāodù]
覆土高度 英文
earth cover （heightofsoil）overconduit
  • 覆 : 動詞1. [書面語] （蓋住） cover 2. [書面語] （底朝上翻過來; 歪倒） overturn; upset 3. 同 「復」 （Ⅱ1. 2. ）
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 高度 : altitudeheightelevation
  1. To the influence of the plateau terrain, the impact of the elevation and the roughness of terrain to every energy component out and incoming are study, and basing the soil spectrum model proposed above, a new radiative transfer model of terrain area was put forwarded in which the soil water content, lai, terrain roughness and elevation were considered synchronously, and incoming scatter light was integral with the solid angle of semi - globe space defined by the slope of the pixel, so scattering lights of terrain and the sky are properly considered, but the operation is still within the acceptable range

    地形與反射率的關系是本文研究的一個重點。本文對崎嶇山地象元的各入射光和反（散）射光分量進行了深入分析，在所提出的濕潤土壤光譜模型和植被冠層模型的基礎之上進一步提出了新的適合青藏高原的山地輻射傳輸模型。該模型同時考慮了土壤含水量、植被覆蓋（ lai ） 、地形起伏和海拔高度的影響，並以象元坡面定義的半球空間立體角對環境入射光進行積分，使周圍地形和天空散射光均得到適當考慮，計算量又在可接受范圍內。
  2. Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in

    同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。
  3. In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints, this thesis made com land, fallow land, orchard, grass land as experimental field in black soil region jlau, which carried out experiment by applying different amounts of n and p fertilization in corn field. by means of collecting the samples of rainfall runoff, erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field, we study the effect of surface runoff on n and p nutrient and fertility degeneration. the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p, in which rainfall and rainfall intensity were more important, while rainfall intensity is the most important meteorological phenomena factor

    針對當前黑土利用現狀，本文借鑒眾多學者的研究方法和觀點，在吉林農大黑土區選擇利用方式不同的玉米地、休閑地、果園、草地，在玉米區進行了不同數量的施肥，通過野外試驗，採集一年自然降雨產流及泥沙樣品，同時採集降雨前後的耕層土壤樣品，研究了黑土區地表徑流對氮磷養分特徵及肥力退化的影響，結果表明：土壤侵蝕和氮磷的流失受諸多因素的影響，降雨量、降雨強度是重要因子，而降雨強度是影響農田地表徑流養分流失的最重要的氣象因子，特別是暴雨，暴雨徑流中氮磷濃度較平時高得多；隨作物生長，覆蓋度逐漸增加以及不同利用方式下表現的覆蓋度差異，氮磷流失都表現為顯著的差異。
  4. Results showed that by using straw and plastic film dual mulch in dry - cultivation of rice planting, both of the range of temperature difference and the loss of water in dry - cultivated field of rice were decreased, the soil structure was improved, the soil nutrient contents were increased, the ineffective tillers of rice plant were decreased, the growth and development stage were advanced, the filling stage was extended, the grain per ear and 1 000 grain weight were raised, the grain yield of rice increased obviously

    水稻秸稈+地膜二元覆蓋旱作栽培效應的研究結果表明，秸稈+地膜二元覆蓋旱作稻田土壤變溫幅度降低，水分散失減少，結構改善，養分積累增加；水稻無效分蘗減少，生育轉變提前，灌漿結實期延長，穗大粒多，千粒重高，增產效果顯著。
  5. The practice of eco - agriculture has brought about striking improvements in the agricultural ecological environment ? barren hills greened, forest acreage greatly raised, soil erosion controlled to some extent

    生態農業建設使農業生態環境得到明顯改善，荒山荒坡得到治理，森林覆蓋率大幅度提高，水土流失有所控制。
  6. The practice of eco - agriculture has brought about striking improvements in the agricultural ecological environment - - barren hills greened, forest acreage greatly raised, soil erosion controlled to some extent, organic matter content of the soil increased, and the ability of the agricultural ecological system to ward off natural disasters improved

    生態農業建設使農業生態環境得到明顯改善，荒山荒坡得到綠化，森林覆蓋率大幅度提高，水土流失有所控制，土壤有機質含量提高，農業生態系統抗災能力有所增強。
  7. The middle and lower parts of woodland and grassland had higher soil water contents during rainy season, which resulted from smaller evapotranspiration and more infiltrated water with a lower gradient. however, upslope runoff infiltration was another reason for hillslope with a lower cover ratio, such as bare land

    雨季林草地坡中下部土壤水分含量較高的原因，可能主要與其蒸散較小且坡度較緩導致入滲水量較多有關；但是對于植被覆蓋度較低的坡地（如裸地） ，坡中下部土壤水分含量較高還與上方來水有較大的關系。
  8. According to the idiographic complexion of our country, the article elucidated the connotation of conservation tillage : it ' s a technology of tillage with minimum tillage or no - tillage so as to reduce the soil ' s disturbing, using stalk cover the field so as to decrease laboring and tillage ' s cost, preventing wind & water erosion, and improving the fertility of soil and the ability of fight a drought

    摘要根據保護性耕作在我國的實施情況並結合國外已有研究結果，我們認為保護性耕作的內涵為：保護性耕作措施就是對農田實行少耕或免耕，盡可能減少對土壤的擾動，並以秸稈覆蓋地表，達到減少勞動強度和生產投入，防止農田風蝕和水蝕並提高土壤肥力和抗旱能力的一種農田耕作技術。
  9. For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics

    利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0
  10. The results show that compared to salix psammophila barrier, ecomat cover does decrease surface sand transportation rate ( sstr ), increase surface soil nutrient, and enhance growth of platycladus orientalia to the extent, undoubtedly ecomat is one of surface cover materials for sand - fixation and revegetation ; compared to two other ecomat part - cover types ( banded and chessboard ), the all - cover type can also decrease sstr, increase surface soil nutrient significantly, growth condition of platycladus orientalia, however, is not good as expected, which may attributes to lower infiltration rate of slight rainfall ; as for two part - cover types, chessboard type is better than banded type in increasing of sstr and enhancement of platycladus orientalia growth

    研究結果表明，與沙柳沙障相比，生態墊確實可以降低近地表的輸沙率，提高生態墊下土壤的養分含量，一定程度上提高檸條的地徑和高度，可見生態墊是一種很好的促進流沙固定和植被恢復的地表覆蓋材料；與其它兩種生態墊鋪設方式（品字狀和帶狀）相比，全鋪可以顯著降低近地表的輸沙率，提高其下土壤的養分含量，但檸條的生長狀況卻略差，這可能與全鋪降低了小雨入滲的可能性有關；就兩種部分鋪設的方式而言，無論從降低近地表的輸沙率還是促進檸條的生長土來看，品字狀都明顯優于帶狀。
  11. By analyzing the rainfall use efficiency, the soil moisture variation during the whole growth period, the economic characters and the output of dry land corn under different film mulch modes, it has been proved that the mode of whole covering on double ridges and planting in catchment furrows is an effective way to store and utilize fully the natural rainfall, to improve soil moisture conservation, to raise rainfall use efficiency, to advance maturity time, and to increase yield and economic benefits of dry - land corn remarkably

    摘要通過對旱作玉米幾種不同覆膜栽培模式降水利用率、玉米整個生育期的土壤水分監測、生育時期觀測、經濟性狀及產量分析證明，旱作玉米雙壟面全膜覆蓋集雨溝播技術是一項充分接納和利用天然降水、最大限度保蓄土壤水分、顯著提高降水利用率、提早成熟、增產效果明顯、經濟效益顯著的旱作玉米栽培模式。
  12. 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。
  13. Plastic mulch increases soil temperature in the bed which promotes faster crop development and earlier yields

    塑料薄膜覆蓋提高苗床的土壤溫度，促進作物較快發育並提早成熟。
  14. At first, the relations between vegetation structures and their controlling soil erosion are discussed. the results show that magnitude of plant community coverage or canopy closure is n ' t certainly the adequate condition of an anti - erosive effective community because the community function of soil and water conservation is related to height of coverage layer as well as community coverage or canopy closure

    首先，討論了植被結構與其防止土壤侵蝕作用的關系，結果表明，植被蓋度或郁閉度的大小並不一定就是防蝕有效植被的充分條件，植被保持水土功能還與覆蓋層的高度密切相關，覆蓋層高度大並不有利於植被保持水土。
  15. Standard specification for high - strength zinc - 5 % aluminum - mischmetal alloy - coated steel core wire for aluminum and aluminum - alloy conductors, steel reinforced

    鋼芯鋁和鋁合金導線用塗覆高強度鋅- 5 %鋁-混合稀土合金鋼芯線的標準規范
  16. Taking the earth - rock dams with straight clay core constructed on thick moraine cover foundation and directly built on bed - rocks with the same sizes and the same materials for example, two - dimensional dynamic fem programme is used to contrast and analyze the static stress distribution and dynamic response difference of two types of high earth - rock dams in the intensive earthquake zones

    摘要以相同尺度和相同材料的建造在深厚覆蓋層上直心墻土石壩和直接建設在基巖上的直心墻土石壩為例，採用二維動力有限元程序對比和分析了強震區兩種高土石壩的靜應力分佈和動力反應的差異。
  17. All the facts above indicate that the best development era of lunan stone forest has passed by, although the height of stone pillars is still increasing at present. meanwhile, the study also shows that the maximal concentr

    由於包氣帶強溶蝕循環帶的深度有限，純粹于土下發育的石牙、石林，其高度一般不會超過10m ，現在我們所見高度在10m以上的高大石林，是在後期厚層覆蓋物的剝蝕過程中增長拔高的。
  18. In this project, the maximum height of the dam is 81m, but the deep overburden in the riverbed has the depth of 147. 95m which is about two times of the maximum height of the dam body, so the seepage and liquefaction prevention of the dam foundation becomes the key and important problem in the design of the dam project. the static stress and deformation under three different projects - horizontal blanket project, clay core project and asphalt core project - for the dam is analyzed comprehensively. the damage that may be induced by variable factors on the dam body in time of engineering completion and water impounding operation period is seriously studied

    其次，將這一模型用於分析下坂地水利樞紐工程，由於該工程河床覆蓋層深度最深達147 . 95m ，是壩體高度的近兩倍左右，壩基的滲流和液化成為壩體安全主要問題，本文對該壩的三種設計方案即水平鋪層防滲方案、粘土心墻防滲方案及瀝青心墻防滲方案的靜態應力位移及壩體在竣工期、蓄水期等各個階段可能產生的破壞進行了認真研究。
  19. 2 ) radar incidence angle and surface roughness correction : to make radar incidence correction and eliminate the surface roughness effects, a wide range of surface parameters ( soil moisture, surface rms height, correlation length, incidence angle ) was input to the ibm model to simulate the effect of surface roughness and radar incidence angle on the sensitivity of soil moisture to the radar backscattering coefficient. a simple model was established to simulate the effects of incidence angle and surface roughness. 3 ) establishment of soil moisture change inversion model : according to a modified ibm model simulation results, the bare surface backscattering coefficients can be expressed as a funtion of the dielectric component for a given surface roughness when the surface slope greater than 2. 0, which is valid for most nature surface : in above equation, r0 is the surface reflectivity at normal incidence

    本研究中，首先利用基於微波輻射傳輸方程的微波植被模型和積分方程（ iem ）模型模擬了各種地表土壤水分含量情況下，植被覆蓋、地表粗糙度（包括地表均方根高度和相關長度） 、雷達入射角對c波段（頻率4 . 7ghz ）水平極化（ hh ）雷達後向散射系數的影響，在此基礎上，建立模型消除了植被覆蓋、地表粗糙度、及雷達入射角對雷達後向散射的影響，利用多時相50m解析度radarsatscansar雷達後向散射系數圖像反演得到了地表土壤水分變化模式信息。
  20. Standard specification for uncoated high - strength steel bar for prestressing concrete

    預應力混凝土用未塗覆的高強度鋼棒材的標準規范
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