Abstract: Bamboo shoot samples were collected from 28 plots in the bamboo forests in 4 counties of Zhejiang Province to investigate the residual of organic pesticides. Three kinds of organochlorine pesticides, i.e., BCH, DDT, and pentachlornitrobenzene (PNCB), were detected. The detection rate of both BCH and DDT was 100%, and that of PNCB was 75%. None of pyrethroid and organophosphorus pesticides were detected. The average residual of all test organic pesticides was lower than 50 μg·kg^-1. The Nemerow index showed that the shoot samples could be divided into two types, i.e., safety shoot, accounting for 82.14%, and basic safety shoot, accounting for 17.86%. It was suggested that the residual of organochlorine pesticides in bamboo shoots from Zhejiang Province was universal, but not severe. In addition, management level, management type, and land use pattern had definite effects on the residual of organochlorine. The pesticide residual pattern in shoots was similar to that in bamboo soil.

Key words: Forest catchment, Ecological and hydrological process, Dynamic mechanism