Effect of wood density and water permeability on wood decomposition rates of 32 bornean rainforest trees

作     者：Sanae Mori Akira Itoh Satoshi Nanami Sylvester Tan Lucy Chong Takuo Yamakura 

作者机构：Laboratory of Plant EcologyGraduate School of ScienceOsaka City UniversitySugimoto 3-3-138Sumiyoshi-kuOsaka 558-8585Japan Center for Tropical Forest ScienceSmithsonian Tropical Research Institute and the Arnold ArboretumHarvard University22 Divinity AvenueCambridgeMA 02138USA Applied Forest Science and Industry DevelopmentSarawak Forestry CorporationJalan TapangKota SentosaKuching 93250SarawakMalaysia 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2014年第7卷第4期

页      面：356-363页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：Grants-in-Aid for Scientific Research from Japan Society for the Promotion of Science(20405011) 

主　　题：Sarawak carbon dynamics fine wood litter wood density tropical rain forest 

摘      要：Aims a better understanding of wood litter decomposition is essential for predicting responses of forest ecosystems to global climate *** studies suggest that chemical properties of wood litters,rather than physical ones such as wood density,are more important for inter-specific differences in wood decomposition ***,empirical data are still limited,especially for tropical *** addition,decom-position rate of wood litter often varies with time,which makes inter-specific comparison *** studied the wood decomposition of 32 rainforest trees to elucidate(i)the degree of interspecific variation in wood decomposition rate of a given size and configuration and(ii)if initial wood density and water permeability are consistent predictors of the overall decomposition rate and its pattern over *** a common garden decomposition experiment was conducted in a tropical rainforest in malaysian borneo for 32 native tree *** wood sticks were set on the forest floor and the weight loss was monitored monthly for 2.7 *** Findings We found large variation in the wood decomposition rate(a 49-fold range),suggesting that we need to consider this variation when cal-culating community-level carbon dynamics of tropical rain *** physical traits of wood,*** density and water permeability,were related to wood decomposition rate and its pattern over *** half-time related positively and negatively to initial wood density and water permeability,*** time-dependentrate model fitted better for 18 species(56%of the study species)that had higher water permeabilities than the others,suggesting that micelle porosity in wood relates to temporal changes in decomposition rate.