conserve water and soil 中文意思是什麼
conserve water and soil
解釋
保持水土-
Soil is the base of agriculture production, the key measure to prevent water and soil loss is to conserve soil, but most soil nutrient is lost with the sediment loss, and serious water and soil loss make the soil thickness degrease, the soil nutrient be deficient and lean, the land quality degrade and the yield of plant decrease, all this results is going to threaten the people ' s transplanting and the agriculture sustainable development, and restrict the economy development of three gorges regions
同時，土壤是農業生產的根本，治理水土流失的關鍵是要保住土壤，而土壤養分絕大部分是隨著泥沙流失的，嚴重的水土流失造成土層淺簿、養分貧瘠，土地質量退化，產量下降，對三峽庫區移民工作和農業可持續發展造成嚴重威脅，制約三峽庫區經濟發展。因此進行三峽庫區坡耕地土壤侵蝕機理研究，探索減輕坡耕地土壤流失的方法措施，具有全局性的重大意義。 -
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。 -
( 3 ) the key link in establishing agroforestry is to select fine plant species in accordance with local natural condition. to make full use of the coexistence and to avoid rejection between different species is very important in obtaining the utmost benefits. ( 4 ) agroforestry systems with rational structure could conserve soil and water, ameliorate soil property, raise land use efficiency and increase the system productivity and achieve significant ecological, social and economic benefits
另外在物種選擇時要做到適地適樹，並且要與當地主導產業結合，產生規模效益， （ 4 ）良好結構的農林復合經營系統能夠保持水土，改良土壤，提高土地利用率和系統生y兩南農業大學碩十學位論文產力，獲得更好的生態、社會和經濟效益。 -
We must conserve our soil and water resourses to assure that these key natural elements are available to support productivity.
我們必須保護水、土資源，以便確保關鍵的自然元素能有效地維持生產。 -
The factors are follows : climate, geology, landforms, hydrology, soil, vegetation, human culture and other factors. compounding the main function, underground water of intake function, in the study area, we can conclude that as thejinan underground water of intake region, the development direction of the study area is to make good use the ecology function, conserve water, maintain water and soil, modulate culture, clean air, improve water quality, beautify environment
（ 2 ）分析研究區景觀生態系統要素：氣候、地質、地貌、水文、土壤、植被、人文等要素，結合研究區主要生態功能，地下水補給功能，分析人類活動對研究區景觀結構功能的影響，得出研究區生態環境質量較差，破壞嚴重，不利於物質、能量流動，與其所要求景觀功能不相適應，現已成為區內經濟發展的主要限制因素。 -
( 1 ) in newly - constructed stage and early stage of reclamation, the most important factor of runoff is 30min rainfall intensity. in later stage of reclamation, the most important one is 45min rainfall intensity. and the runoff capacity is the most important influence factor to soil erosion always ; ( 2 ) on the certain degree, loosening surface has an active function to infiltration condition but not to conserve soil ; ( 3 ) the most runoff is formed on platform of stackpile and the soil erosion often happens in the slope ; ( 4 ) stone - soiled dumps have an advantage over soil at respect of erosion resistance so that soil is not adapt in covering slope ; ( 5 ) grass has a better role in conservation of water and soil than arbor in early stage of reclamation ; ( 6 ) arbor - arboret - hemp mix is the best model for conservation
結果顯示：在未復墾時期和復墾初期， 30min降雨強度對徑流影響最大，復墾後期徑流與45min雨強相關性最強，而徑流量對土壤侵蝕量的影響始終最大；通過疏鬆地表巖土只在一定程度上改善地表的入滲條件，並不能起到保土的作用；平臺為徑流的主要形成區，而土壤侵蝕主要集中在斜坡；土石混排坡的土壤抗蝕性比覆土坡的要大得多，在排土場形成過程中不宜用厚層黃土覆坡；在復墾初期，純草模式水土保持效果明顯好於純喬模式。 -
Abstract : the environmental characteristic in the loessial plateau is analyzed in the article. as a result, the countermeasures for building chinese eco - agriculture to conserve water and soil in the loessial plateau are put forward
文摘:對黃土高原生態環境特徵進行了分析，並提出了黃土高原建設水土保持型生態農業對策。 -
The results showed that forest vegetation could effectively conserve water and soil and improve entironment, while the effects of water and soil conservation were significant varied between different vegetations, the effect of mixed forest was significant
結果表明，森林植被能有效地保持水土，改善生態環境，但不同植被下保持水土的效果有明顯差異，尤以混交林保持水土效果顯著。
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