Study On Techniques Of Ecology Quick Restoration With Imitating The Natural Method On Soil Slope

Recent years,Expressway's quickening construction creates lots of exposed slopes.Regarding ecology restoration of the slope,the traditional projecting slope way already could not satisfy the need of ecology quick restoration,and these destroyed ecology environment are hardly to recover by nature ability itself,and it maybe need a long time.Based on this,The author explore a kind of new low cost,quick effective,good effect vegetation slope protection after the experiment,which is "Techniques of Ecology Quick Restoration with Imitating the Natural method".It is that imitates the natural wild vegetation,realizes exposed slope ecology restoration with the artificial auxiliary method.Meanwhile we made the convention sowing grass seed experiment,obtains following result and the conclusion after the contrastive analysis:1 The situation of growth restoration Period of coverage in more than 50% with imitating the natural ecological method planting lawns of the slopes are 3,4,5,6,8,9,10,11 month which period of coverage 100%are 8,9,10,11 month;Period of coverage in more than 50%with conventional methods of planting artificial grass are 2,3,4,5,9 month which period of coverage 100%are 2,3,4,5 month only below slope.2 Comparison of resilience Vegetation's capacity of drought-resistant is strong with imitating the natural ecological slope.Displays in:The slope of conventional sowing grass seed is completely withered in the dry season 6,7,8 month, 10 to 1 month too;But period of withered are only 7,11,12,1 month with imitating the natural method because the species are diverse,reaches 15 kinds,and it is the fittest survival between the species and it display finely in heat-resisting,barren-bearing,moisture etc because they are the native wild plant too.3 The situation conservation of water and soil On two kind of ecology protecting slope there are not the furrowing and the surface erosion phenomenon after the heavy rain;There are washout striae 4 on the contrast 50m~2 exposed slope,the ditch's width 3～8cm,the ditch's depth 1～4cm,the length different,the longest is 4.35m,the shortest is 1.86m,the furrowing quantity is approximately 450kg/km~2. Therefore the vegetation slope can control soil erosion actively.4 Economic efficiency analysis Construct the lawn's cost with imitating the natural method is 5.1 yuan/m~2,and need not maintenance and management later period;Construct cost with the simple conventional sowing seeds method is 7.2yuan/ m~2,and need maintenance and management later period.Cost of investment with imitating the natural ecology quick restoration method can save 30%comparing to the convention method.Ecological benefit is high,the landscape effect is good,the construction cost is low with imitating the natural ecology method.The author recognizes that the method has the broad application prospect.