shortage of soil moisture 中文意思是什麼
shortage of soil moisture
解釋
土壤水分不足-
It points out that the rational and stable inner structure cannot lead to serious soil moisture shortage ; its natural climate condition can meet the needs of forest community. it is the irrational management that causes the serious soil moisture shortage in artificial forestry land. if we intervene properly and create some growth condition similar to natural vegetation, the recessed artificial robinniapseudoscacia can restore benignly
當前人工林地的土壤水分出現嚴重虧缺而形成土壤干化層並導致人工林衰退是人為不合理經營造成人工林群落林分結構不完善的結果，如果人為干預適當，能創造出類似於天然植被的生存條件，人工植被完全有可能得到正常的生存和發展，出現衰退的人工刺槐林完全有可能得良好的恢復。 -
Based on the serious shortage of soil moisture, soil aridity and vegetation recession in this region, the following issues are studied in this dissertation : ( 1 ) the meaning of soil water and its role in the water circulation ; ( 2 ) soil water deficit and its influence to vegetation growth ; ( 3 ) the definition of soil dried layer and the causes of its formation ; ( 4 ) soil dried layer distribution and characteristics in north of shaanxi loess plateau ; ( 5 ) the primary study of measurable index of soil dried layer
本論文主要針對黃土高原土壤水分嚴重虧缺現狀以及因之而形成的土壤干化和林草植被衰退現象，主要對以下幾方面的問題進行了研究： （ 1 ）土壤水分的意義及其在生態系統水分循環過程中的作用； （ 2 ）林草植被土壤水分虧缺狀況及其對植被生長的影響； （ 3 ）土壤干層的涵義及成因分析； （ 4 ）陜北黃土高原土壤干層的分佈及特徵； （ 5 ）土壤干層的量化指標初步研究。 -
On the theory and method of farm hydrodynamics and hydrology and water resources system engineering, the paper covers three topics study about the techniques of farm draining ( topic one ), and soil moisture measuring and forecasting and drought preventing inforwaton system ( topic 2 ), and water resources optimal allocation ( topic 3 ), in the light of the flood and the drought and the shortage of water resources in the north of anhui province
本論文採用農田水動力學、水文學、水資源系統工程的理論和方法，針對安徽淮北地區水旱災害頻繁和水資源緊缺現狀，進行了農田排水技術、墑情監測預報和抗旱減災信息系統和農灌區水資源優化配置技術等一體化研究。
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