Control soil erosion in highway construction 高速公路建設水土流失防治思考
The mode for controlling soil erosion of hillside fields in small valley in much frigid region 高寒地區丘陵慢崗地小流域水土流失治理模式
Aims energy flow characteristics of alley cropping have been rarely studied , although alley cropping is common in sichuan in order to control soil erosion and promote productivity 摘要關于農業生態系統能流特征的研究很多,但關于植物籬農作系統能流特征的研究很少。
People ' s governments at various levels shall take measures to strengthen the rehabilitation of small river basins , control hazards of sand storms , prevent and control soil erosion and desertification 各級人民政府應當采取措施,加強對小流域治理,控制風沙危害,預防和治理水土流失、土地沙化。
The mechanism of controlling soil erosion without tillage outside and inside our country , its effects on soil characteristics and the direction of its application in out country are introduced in this paper 摘要綜述了國內外免耕控制土壤侵蝕的機理研究以及對土壤性質的影響,并提出免耕在我國的應用方向。
Article 3 all units and individuals shall have the obligation to protect water and soil resources , prevent and control soil erosion , and also have the right to report against and unit or individual that damages water and soil resources and causes soil erosion 第三條一切單位和個人都有保護水土資源、防治水土流失的義務,并有權對破壞水土資源、造成水土流失的單位和個人進行檢舉。
In order to control wind erosion , 5 measures are brought out that to increase artificial rainfall , to develop irrigated farming and to rise using rate of water resource , to control soil erosion , to optimize the frame of crops and solid expoiting , and to establish control and forecast system 提出了防治沙化的5大措施,即增加人工降雨改造利用沙地、發展灌溉農業提高水資源利用率、治理水土流失、優化種植結構、立體開發、建立健全監測預報系統。
In order to find otit a new set of measures to control soil erosion on sloping cultivated farmland in three gorges reservoir area , we have adopted narrow terrace and put agroforetryjmd contour hedgerows into effect by means of sustainable development theories , ecological theories , and social economic theories since feb . 2001 本文針對三峽庫區的具體環境、氣候條件,為探索庫區陡坡耕地水土流失綜合治理的新方法,在庫區的陡坡耕地上,應用可持續發展理論、生態系統原理、社會經濟學理論,采用水平階整地方式,實施農林復合經營和生物籬埂技術。
According to natural conditions of the area , natural rules and systematic engineering principle , a series of countermeasures were propased such as improving forest cover degree , enhancing water conservancy project , adjusting agricultural production constitution , combining engineering measures with ecological measures to restore mine ecosystem and to take comprehensive measures to control soil erosion so as to improve ecological environmental quality in watershed between the yangtze river and the huaihe river 針對研究區域的自然環境條件和社會經濟狀況,按照系統工程的原理,從遵守自然規律的角度出發提出了提高森林覆蓋率,加強水利工程建設,改良土壤,因地制宜調整農業產業結構,工程措施與生物措施相結合進行礦山修復,治理水土流失,搞好生態環境保護規劃,大力發展生態旅游,提高公眾的環境意識,依靠科技進步促進地方經濟發展的一系列改善江淮分水嶺地區生態環境問題的對策。
Some particular measures to be taken are as the followings : ( 1 ) to establish a uniform harmony mechanism in the river basin in order to have a general plan for wetland protection and utilization ; ( 2 ) to combine the existing protection districts according to lake drainage area and species distribution , and to construct new wetland protection region in order to solve problems in management districts ; ( 3 ) to develop wetland restoration and reconstruction ; ( 4 ) to carry out reforesting in formerly cultivated land and to construct shelter forest of the yangtze river in order to control soil erosion and to preserve the water resource ; ( 5 ) to protect and utilize reasonably the wetland resources in the middle and lower reaches of the yangtze river ; ( 6 ) to strengthen the research of wetland science 具體可采取以下措施:在流域內建立統一協調機制,對流域濕地進行保護與合理利用,合理布局,統一規劃;按湖泊流域和物種分布整合現有保護區,建立新的濕地保護區,解決目前管理上的制約問題;大力開展濕地修復重建;推進退耕還林、長江防護林等工程建設,發揮森林治理水土流失、涵養水源的作用;在保護的前提下科學合理地利用長江中下游濕地資源,開拓新的生產力;同時加強濕地科學研究。