impact erosion
6.The study results showed that it was suitable for assessing the impact of highway route selection on the ecological environment using quantitative analysis indexes of vegetation coverage, biomass, flood detention ability, soil character change, cropland occupation and water and soil erosion, and it was suitable for route selection using the comprehensive ecological impact assessment method.
7.The design and construction of the reinforced concrete sheet-pile and the impact from the constuction on the ancient sea embankment and the historic buildings therein are described in detail herein combined with the successful case of the application of reinforced concrete sheet-pile to the erosion control for the ancient sea embankment of QianTang River.
8.The results show that, in the simulation factual industry mine circumstance, when the impact power is 0.7,1.2,1.7J,the impact-corrosion resistance mechanism of low-carbon hi-alloyed steel is the light micro cutting, light microcosmic upswing object and secondary micro cutting, cutting off from root of edge that was crowded. After a long time,there are some surface fatigue flakes and erosion abrasion in the little process harden layer.
9.Abstract: In light of status quo the forest in China,harms are analyzed of soil erosion,flood disaster, sand storm,drought,zero flow of rivers,and species reduction caused by deforestation for farming.The impact of these harms on the national economy and a series of ecological environment problems which happened in the past several years are analysed.Functions of reducing and cultivation for forestation for the development of the west for river harnessing for the application of synthetic measures,and for getting rid of poverty are studied.
