Leaf litter decomposition dynamics in unmanaged Phyllostachys pubescens stands at high elevations in the Daiyun Mountain National Nature Reserve

作     者：XU Dao-wei LIU Jin-fu Peter MARSHALL HE Zhong-sheng ZHENG Shi-qun 

作者机构：Cross-strait Nature Reserve Research Center Fujian Agriculture and Forestry University Key Laboratory of Fujian Universities for Ecology and Resource Statistics Faculty of Forestry University of British Columbia 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2017年第14卷第11期

页      面：2246-2256页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 09[农学] 090301[农学-土壤学] 0303[法学-社会学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0705[理学-地理学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0816[工学-测绘科学与技术] 0706[理学-大气科学] 0813[工学-建筑学] 0704[理学-天文学] 0833[工学-城乡规划学] 0713[理学-生态学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：funded by the Fujian Provincial Education Department (Grants No. JA15154) Youth Foundation of Fujian Agriculture and Forestry University (Grants No. 2010007) 

主　　题：Decomposition models Biomass-ratiohypothesis Nutrient release pattern Phyllostachyspubescens Litter decomposition 

摘      要：Due to its rapid growth and high rate of spread, Phyllostachys pubescens can suppress other species, eventually leading to pure P. pubescens forests. Research on the patterns of litter decomposition and nutrient release from P. pubescens across stand mixtures are helpful to understand the decomposition and nutrient dynamics during the invasion process. However, little is known for unmanaged conditions at high elevations. Therefore, we studied the decomposition of four litter compositions comprised of different combinations of P. pubescens and Cunninghamia lanceolata foliage for one year to explore the pattern of litter decomposition and nutrient release at the Daiyun Mountain National Nature Reserve. The results show that:(1) the litter decomposed faster with a higher proportion of P. pubescens based on Olson s decay model;(2) the remaining litter compositions followed a trigonometric function model better than Olson sdecay model and fluctuated periodically in tandem with changing temperature and precipitation;(3) the litter mixture decompositions did not support the biomass-ratio hypothesis test; and(4) there were significant binomial, power and exponential relationships between initial concentration and final amounts remaining after 1 year decomposition for C, N and P. The correlations between litter decomposition and nutrient releases were significant. The results may be used to explain the rapid spread of P. pubescens and to guide the natural management of plantations.