Study on Catchment Efficiency and Ecological Effect of Near Natural Catchment Surface in Alpine Mining Area
Aiming at the problem that there is no irrigation water source for vegetation restoration of the high and steep slope in the Prang copper mining area of Shangri-La,combined with the local rainfall characteristics and without af-fecting the original habitat,we carried out SCA-2 mixture ratio experiment and rainwater harvesting experiment,and used AHP analytic hierarchy process and fuzzy comprehensive evaluation model to comprehensively evaluate and analyze different types of rainwater harvesting surface.The results showed that the optimal use ratio of soil and SCA-2 soil solidi-fying agent was 0.45% (mass ratio).Compared with the natural slope(T1),rammed slope(T2)and plastic film slope(T3),the rainwater collection efficiency of the optimal ratio SCA-2 treatment(T5)was significantly increased,second only to that of the concrete slope(T4).The average rainwater collection efficiency of the five kinds of rainwater collection surfaces from large to small was T4>T5>T3>T2>T1.Based on the evaluation of ecology,economy,durability and ef-ficiency,the order of the five rainwater harvesting faces was T5>T4>T3>T1>T2.It could be concluded that the SCA-2 treatment was a more economical and ecological near-natural rainwater harvesting face.
near naturerainwater collecting surfacerainwater collecting efficiencyecological effectmine restoration
万方数据
维普
