Spring canopy interception characteristics of Phyllostachys praecox cv. Prevernalis stand converted from cropland at different densities

A hydrological observation in Phyllostachys praecox cv. Prevernalis stands converted from croplands at eight different densities( 10800 ± 400,11600 ± 400,13200 ± 400,14800 ±400,16400 ± 400,20800 ± 400,22400 ± 400,22800 ± 400 individuals per hm2) was carried out to study their canopy interception characteristics. The results showed that the rainfall had a para-bolic relationship with throughfall and stemflow,and had a downward parabolic relationship with canopy interception,respectively. The average rate of canopy interception of the eight stands ranged from 1. 42% to 37. 58%,and the stand density had a downward parabolic relationship with the maximum canopy interception and average canopy interception rate. At the stand density of 17209 individuals per hm2,the average canopy interception rate was maximum( 31. 15%)and the maximum canopy interception potential was 39. 07 mm. Therefore,a proper stand density could fully favor the ecohydrological benefit of P. praecox cv. Prevernalis stands.