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The Effects of Phyllostachys pubescens Expansion on Soil Fertility in National Nature Reserve of Mount Tianmu

WU Jia-sen1,JIANG Pei-kun1,WANG Zu-liang2 (1.School of Forestry and Bio-technology,Zhejiang Forestry College,Lin'an 311300,China;2.Management Office of National Nature Reserve of Mount Tianmu,Lin'an 311311,China)  
In order to understand the effects of Phyllostachys pubescens expansion on soil fertility in National Nature Reserve of Mount Tianmu,physical and chemical analyses on the soils under bamboo forestry,bamboo-deciduous-conifer mixed forest and deciduous-conifer mixed forest were conducted.The result showed that,along with Phyllostachys pubescens expansion,the content of soil hydrolytic N was obviously increased,the contents of available P and quick-acting K was obviously decreased,but it had not significant effect on soil pH,full N and full P.Soil water-soluble organic carbon(WSOC),microbial biomass carbon(MBC),microbial respiration carbon(MRC) and proportion of organic carbon(OC) presented in soil labile organic carbon were significanly increased with the Phyllostachys pubescens expansion,compared with the soil under deciduous-conifer mixed forest,the content of WSOC,MBC and MRC were increased by 50.3%、36.5% and 66.1%,respectively.
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