soil conservation methods 中文意思是什麼

soil conservation methods 解釋
土壤保存法
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  • 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
  • methods : （方法）：是指定給對象的函數。在函數被指定給對象之後，該函數就可以被稱為是該對象的方法。
  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. It divides the main vegetation of the headwater region of huangpu river into 4 categories based on field survey and observation and methods of factor analysis and systematic cluster analysis and according to the degree of soil and water conservation function : deciduous trees and shrubs are category 1 which shows very strong soil and water conservation function ; tea plantation, grasslands and pine trees are category 2 which has stronger function ; the category 3 is moso bamboos and broadleaved evergreen trees which have stronger permeability and erodibility, but the permeable performance is not outstanding, the capacity of soil moisture storage common and soil and water conservation function moderate and ; the category 4 is uncovered land where the soil and water conservation function is very weak and its permeability, erodibility, erosive resistance and soil moisture storage capacity are all notably smaller than that of the other lands

    摘要在野外調查、實測的基礎上，採用因子分析、系統聚類分析的方法，根據土壤層水土保持功能的強弱，將黃浦江源區主要植被類型分為4類：落闊林、灌木林為第一類，表現出很強的水土保持功能；茶園、草地、松林為第二類，土壤水土保持功能較強；毛竹林、常綠闊葉林表現出較強的抗蝕性和抗沖性，但滲透性能並不突出，土壤貯水能力也一般，水土保持功能中等，為第三類；裸露地水土保持性能很差，單獨作為第四類，其滲透性、抗蝕性、抗沖性、土壤水庫容都顯著小於其他各樣地。
  3. The mission of the conservation and production research laboratory is to 1 ) develop improved water management methods and irrigation technology for sustaining or enhancing crop productivity, improving water use efficiency, reducing ground water use, and enhancing water and soil quality ; 2 ) develop management practices that optimize the use of water, soil, climatic, and nutrient resources for economically and environmentally sustainable crop and livestock production systems under dryland and limited - irrigation conditions ; 3 ) develop systems for utilizing renewable energy sources ( wind, solar, and biofuels ) for pumping irrigation, livestock, and farmstead water and generating electric power ; 4 ) develop regimens that reduce environmental risks posed by accumulations of feedlot wastes by reducing the phosphorus content, improving nutrient utilization, and applying manure to grasslands

    描述:美國農業部保持與生產研究實驗室的主要任務是： 1 .開發水資源管理方案或灌溉技術，提高用水效率，減少地下水使用，改善土壤和水質； 2 .使水資源、土壤資源、氣候和養分資源達到最優化，以保證在乾旱和灌溉條件有限的地區種植業和畜牧業能可持續發展； 3 .開發可再生能源用於灌溉、畜牧飼養和發電； 4 .通過減少磷成分，降低飼養場廢棄物的環境風險，將其施用於牧草地，提高養分利用率。
  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. Methods and experience of soil and water conservation science and technology ext ension in shaanxi province

    陜西省水保科技推廣的做法與經驗
  6. Using cost - benefit analysis methods of environmental economics including the market valuation methods, opportunity cost methods, shadow engineering methods and restoration expenditure methods ; this paper evaluates the soil conservation benefit of ccfg in yuanzhou district of guyuan city

    本文採用環境經濟學中費用效益分析的市場價值法、機會成本法、恢復費用法、影子工程法等估算了固原市原州區退耕還林還草工程的土壤保持效益。
  7. Methods and experience of soil and water conservation of tourist city jinggang shan

    旅遊城市井岡山水土保持工作的做法與經驗
  8. Study on methods of sediment yield measurement in model tests of soil and water conservation

    水土保持模型試驗中產沙量測量方法研究
  9. The concepts of the precipitation scale of catchment and soil and - water conservation measure ' s scale were introduced. the methods of calculating these scales were also proposed. with these proposed methods, comprehensive precipitation - runoff models respectively have been developed for the four catchments

    引入了「流域降水量標度」和「水土保持標度」概念，建立了標度的計算方法;分別建立了四條流域水土保持作用下的降水產流綜合模型?黑箱模型。
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