Study on characteristics of distribution of rainfall in Pinus tabulaeformis plantation in Daqing-Mountains

The distributions of rainfalls in 30a of Pinus tabulaeformis plantation in Daqing-Mountains during the growing seasons were studied in 2006.The results showed that distribution of the throughfall,canopy interception and stemflow were 65.83%,33.04% and 1.13%.The effective interception amount of litter was 0.62mm,the interception rate was 8.9%,and surface run-off rate was 2.6%.The relationship between throughfall,stemflow and rainfall were separately in linear positive correlation.The canopy interception and rainfall were in power function correlation.