Study on the Rainfall Redistribution of Phyllostachys edulis at Different Time-scale in Chongqing Jinyun Mountain

Phyllostachys edulis is a typical vegetation type of Jinyun Mountain forest ecosystem.By studying on the hydrology data in 2002-2007,the paper reveal the type of vegetation rainfall-runoff characteristics from the qualitative and quantitative,and of the process of change that the process of rainfall,canopy interception,surface runoff,underground runoff,soil,litter,and other factors of the distribution of rainfall.Research shows that（1） 2002-2007,Nanzhu of the annual rainfall distribution are relatively stable;more concentrated rainfall in April to September,accounting for 72% of annual rainfall,the peak in July.（2） Underground and surface runoff and rainfall response to maintain close relations.In the distribution of rainfall,surface runoff accounted for 30.7%,15.2% of the underground runoff.（3） In Nanzhu forestry,the largest soil of rainfall distribution to 19 mm,the largest litter of rainfall distribution to 4.6 mm,canopy interception distribution of rainfall in 13.2%.The purpose of this study for the Yangtze River Basin forest ecosystem in the hydrological study species selection,vegetation and provide information and data support.