表土流失 的英文怎麼說

中文拼音 [biǎotǔliúshī]
表土流失 英文
surface waste
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 流失 : run off; be washed away; flow away; wastage
  1. In order to solve this problem, we find a kind of herbages plant - sabaigrass ( eulaliopsis binata ) which not only can accommodate the badly environment of purple soil but also have excellent water and soil conservation effect and good economic benefit. this study adopt quantitative and qualitative methods, through comparative study of four different utilization types : sabaigrass treatment, grass tree solid plating treatment ( planting sabaigrass under fruit trees treatment ), bare land treatment, natural wild grassland treatment, study water and soil conservation effect, soil water condition, soil constructors condition, soil fertility condition and soil surface temperature, then evaluated the water and soil conservation effect of plating sabaigrass in purple soil bare sloping field and probed into water and soil conservation mechanism. the main results are as follows : 1

    本研究針對湖南省衡邵盆地紫色巖地區日益惡劣的生態環境，從紫色土荒坡地水土流失治理入手，在尋求出既適應紫色土荒坡地惡劣環境又有良好水土保持作用和一定經濟效應的作物? ?龍須草的基礎上，用定性和定量相結合的方法，以「龍須草純種」 、 「龍須草與果樹立體種植」 （簡稱林草立體種植，下同） 、 「空曠地」 、 「自然野生雜草地」四種不同的土地利用方式進行對比研究，從水土保持效應、土壤水文狀況、土壤結構、土壤肥力狀況、地表溫度狀況等方面分析、評價紫色土荒坡地種植龍須草防治水土流失的效應，並對其機理進行了初步探討，主要研究結果如下： 1
  2. Abstract : the biological control effect on fruit tree insects and eco - economic benefit of interplanting mentha spicata with orchard was studied and analysed based on field polt experiment. the result shows : interplanting mentha spicata with orchard have obviously biological control effect on fruit tree insects like phyuoenistis eitrella stainton, papilio xuthus l, phyllocoptruta oleivora ashmead and myzus perieas sulzer ect, interphanting mentha spicata with slope orchard could reduce soil and water losses, and improve soil physical - chemistry property effectively, its also accelerate fruit tree growth and increase the yield of fruit tree, and has good economic benefit

    文摘:在野外小區試驗的基礎上，對果園套種留蘭香生物防治果樹蟲害的作用及其生態經濟效益進行了研究和分析，結果表明：果園套種留蘭香對潛葉蛾、柑橘鳳蝶和桃蚜等果樹害蟲有明顯的生物防治效果；在坡地果園套種留蘭香能有效減輕水土流失、改善土壤的理化性狀，促使果樹的生長和提高果樹的產量，並具有良好的經濟效益
  3. If the topsoil is taken away by erosion, plants can no longer grow in the soil left behind.

    如果因水土流失而沖掉了表土，植物不能再在留下的土壤中生長。
  4. Vegetation fraction is a most important indicating to vegetation, and it is one of the most important factors of eroding soil

    植被覆蓋度是衡量地表植被狀況的一個最重要的指標，也是影響土壤侵蝕與水土流失的主要因子。
  5. The research results mainly show : ( 1 ) the ecological degradation characteristics of wuxi county include : some soil is thin and barren and its water and fertility conservation abilities are poor, gradual degradation of soil results in decrease of vegetation diversity and the vegetation community structure gradually inclines tc simplicity from complexity. the types of soil and water loss in wuxi county mainly involve surface erosion and gully erosion. according to investigation, surface erosion area occupies 80 % or so or erosion area, in which the slope farmlands surface erosion area accounts for about 70 % of farmland erosion area

    研究結果主要包括： （ 1 ）巫溪縣生態退化特徵表現：作為生物生長基質的部分土壤薄而貧瘠，保水保肥能力差，部分地區基巖裸露，土壤的不斷退化導致植物種多樣性減少，植物種群結構逐步由復雜趨向簡單化；縣內水土流失的類型主要包括面蝕和溝蝕兩大類，據調查，面蝕面積占侵蝕總面積的80左右，其中坡耕地面蝕佔耕地侵蝕面積的70左右。
  6. At the same time the study analyse the structural system of the index and it ' s weight with the ahp, and choose soil quality, soil thickness, the content of organic matter, terrain, elevation and the ration of irrigated guarantee as gradation index and choose soil quality, soil thickness, the content of organic matter, terrain, elevation, the ration of irrigated guarantee, the condition of traffic, the distance from the central city, the scatter degree of field, the neat degree of field, loss of water and erosion of soil and land contamination as classification index. at the same time the study emphasize the effect of the condition of ecological condition and environmental contamination

    採用層次分析法對該區域農用地分等定級的指標體系及其權重進行了研究，選擇表層質地、土層厚度、有機質含量、地形、海拔、灌溉保證率等6項指標參與分等評價，選取表層質地、土層厚度、有機質含量、地形、海拔、灌溉保證率、對外交通狀況、距市中心距離、田間道路狀況、田塊分散度、地面平整度、水土流失、土地污染等13個因子分指標區進行定級評價，強調了生態條件及其環境污染狀況在農用地分等定級中的作用。
  7. Degeneration problems of karst soil fertility are mostly soil leanness, vegetation reduction, and natural environment erosion and rock desert

    巖溶土壤肥力退化問題主要表現為土壤貧瘠、植被減少、水土流失和土地石漠化。
  8. These examples show that, contrary to the widely accepted assumption that nutrient inputs to tropical upland soils will accelerate acidification and deterioration, a combination of supportive management measures such as erosion control, legume cropping and recycling of biomass and plant nutrient inputs can safely lead to soil fertility buildup and attractive, sustainable, economic returns

    通常認為在熱帶地旱土土壤上施用養分會加速酸化和土壤退化，但這些例子卻恰恰相反，表明了通過控制水土流失、種植豆科作物、生物量再循環以及養分投入等綜合配套措施可以穩妥地增進土壤肥力和獲得有吸引力的經濟效益。
  9. The results show that ( 1 ) the system of contour dams, contours and fallow had positive impact on water and soil losses than grass stripes and contour ditch. at the same time it was showed that contour dams, contours, fallow significantly reduced soil erosion and water loss, grass stripe and contour ditch had recorded reduction in water and soil losses although to a much less extent than above 3 farming systems. most of sediment was bed load in all the systems except in contour dams and contour fanning

    研究的主要結論如下： 1 、運用坡面徑流小區法系統地研究了當地農業生產活動中不同農作措施下紅壤坡耕地水土流失特徵、土壤養分流失規律及形態特徵，結果表明： （ 1 ）同順坡農作措施相比：其它農作措施均具有明顯減輕水土流失的作用，等高土埂，等高農作、休閑處理控制水土流失的效果優於水平草帶和水平溝處理。
  10. Terraces on slope land delete the conditions of causing soil and water loss. ponds, cistens, water cellars enhance surface water use efficiency, warping dams can store flood, decrease flood peak, retain sediment, and conserve water

    坡地修梯田消除了產生水土流失的條件，蓄水池、旱井、水窯提高了對地表水資源的利用率，淤地壩具有蓄洪水、削洪峰、攔泥沙、涵養水源的作用。
  11. Investigation of soil and water loss in hunan and jiangxi provinces shows that there are still evident soil and water loss under forest even through the forest cover rate is as high as 51. 4 % and 53 % respectively

    對湖南、江西兩省水土流失概況的調查結果表明，盡管森林覆被率高達51 . 4 %和53 % ，林地中的水土流失仍十分明顯。
  12. Because no tillage and minimum tillage reduce erosion and concentrate nutrients in the surface soil just below the residue cover, micronutrients generally are less often deficient than under conventional tillage

    由於少耕和免耕減少了水土流失，同時把養分富集在植物殘茬覆蓋下的土壤表層，所以，與傳統耕作制相比，少耕和免耕一般不易發生微量元素的缺乏。
  13. Results showed, taking jia - lu - he catchment as example, that the integrated control of soil and water loess could reduce the flood - peak flow and flood water amount, that the flow process has been prolonged and that the peak flow was postponed

    提出了水土流失綜合治理對大中流域暴雨洪水影響的研究方法。以佳蘆河為例，分析表明：水土流失綜合治理使暴雨洪水的洪峰流量、洪水總量降低，洪水過程持續時間延長，洪峰滯后。
  14. In the absence of successful efforts to stem the loss of topsoil, the social effects of erosion will probably first be seen in africa.

    在控製表土流失的努力缺乏成效的情況下，土壤侵蝕的社會影響將可能首先出現在非洲。
  15. The degraded ecosystems include : > 25 dry land, mountain dry land, low density forest, grassland of low cover rate or moderate cover rate, all of which are the sources of soil and water loss. the low intensity of soil and water loss accounts for 55 % of the project area, the moderate for 23 %, and fierce for 12 %

    早地、山區早地、疏林地以及低、中覆蓋度草地，也是水土流失主要的策源地;其水土流失的強度也表現出微度侵蝕占項目區的55 % ，中度侵蝕佔23 % ，強度侵蝕佔12 % 。
  16. Generally, karst rock desertification refers to the evolving process that leads to intense human - land conflict, destruction of vegetation, soil erosion, bare rock, failing productive forces of the land and the land surface appearing as desert from visual sense, because of the frail ecological environment formed by karst, and of the irrational social and economic activities of human beings

    喀斯特石漠化指在喀斯特脆弱生態環境下，人類不合理的社會經濟活動，造成人地矛盾突出、植被破壞、水土流失、巖石逐漸裸露、土地生產力衰退喪失，地表在視覺上呈現類似於荒漠景觀的演變過程。
  17. If the vegetation is damaged on account of the mining or construction, measures must be taken to rehabilitate the topsoil and vegetation, thereby preventing soil erosion

    因采礦和建設使植被受到破壞的，必須採取措施恢復表土層和植被，防止水土流失。
  18. The results indicated that net - suspended spray seeding ( nsss ), spray seeding ( ss ), grass - stick technique ( gst ), liana protection ( lp ) and grass protection ( gp ), were the best preventative ways to prevent soil erosion, to renew succession and to form stable ecological communities, which have broad application

    研究結果表明，掛網噴播、普通噴播、草棒技術、藤本護坡和植草護坡，是防止水土流失、更新演替，形成穩定的生態群落的最好方法，有著廣闊的應用前景。
  19. The main result is as follows : 1. after erosion, the content of organic matter, total nitrogen and the available nitrogen in the sediment is more than that of soil sample. namely the enrichment phenomenon of organic matter, total nitrogen and the available nitrogen in slope cultivated land erosion soil is obvious

    黃?土受侵蝕后，泥沙樣中有機質、全氮和堿解氮的含量都高於雨前採集的坡地表層土樣，即黃?土坡耕地水土流失中有機質、全氮和堿解氮流失的「富集」現象明顯，而全磷和速效磷卻無明顯的「富集」現象。
  20. Loss of topsoil by erosion and a reduction in soil fertility by not replacing nutrients, turn a renewable resource into a non - renewable one

    侵蝕造成的表土流失以及不補充養分造成的土壤肥力下降使一種可再生資源變成不可再生的資源。
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