关键词: 毛竹林, 生物量分配, 土壤理化性质, 管护类型

Abstract: The biomass maintenance and soil physical and chemical improvement are the key processes in sustainable forestry management.The biomass distribution and soil physical and chemical characteristics were studied in Phyllostachys edulis forests in Tianbaoyan National Nature Reserve of Fujian Province.Three management types were used as control(Ⅰ):shoot digging and herb chopping;(Ⅱ):shoot digging, herb chopping, and special fertilizer;and(Ⅲ) with shoot digging, herb chopping, special fertilizer, and irrigation.Bamboo biomass of forests showed the order as Ⅱ(143 998.50 kg/hm²) > Ⅲ(105 872.25 kg/hm²) > Ⅰ(56 296.63 kg/hm²).The aboveground biomass increment fraction showed the order as Ⅲ(74.75%) > Ⅱ(74.91%) > Ⅰ(75.36%).Fertilization and irrigation increased forest biomass, but decreased the aboveground biomass increment fraction.In addition, soil physical and chemical properties were different in bamboo forests with different managements.The treatments with Ⅱ and Ⅲ decreased soil bulk density, but increased water capacity and no-capillary pores.The contents of organic matters, total nitrogen, total phosphors, hydrolysable nitrogen, and available potassium were decreased under the treatments with Ⅱ and Ⅲ, suggesting the treatments could damage the sustainable forest productivity.Management measures also affected soil enzyme activities.The treatments with Ⅱ and Ⅲ decreased soil catalase activity, which might inhibit the growth of bamboo.

Key words: Phyllostachys edulis forests, biomass distribution, soil physical and chemical properties, management and protection