AND THEIR INFLUENCING FACTORS UNDER DIFFERENTSITES AT HIGHLAND UPRIVER TUO RIVER

The research was made about the correlativity of edaphic anticorrosion and permeability and their influencing factors under different sites at highland uprive Tuo River. The main influencing factors of edaphic anticorrosion and permeability were found in different sites by analysing separate and integrated influence of edaphic physical characters and grass coverage and forest kinds and shade density on edaphic anticorrosion and permeability, the cause was also discussed to provide the gist for the selecting measures on meliorating soil. The result was got that:1) In the whole, manmade interference was servere in this region, grittiness and too bad configuration of soil were disadvantageous to conserver water and fertilizer; 2) The main factors were forest kinds and coverage of vegetation under forests that were influencing edaphic anticorrosion and permeability, of which mixed forest have the best effectiveness enhancing edaphic anticorrosion and permeability and refining edaphic character.