天然林择伐10年后凋落物现存量及其养分含量  

Biomass and Nutrient Content of Forest Litter in Natural Forest of Different Intensity Harvesting after Ten Years

作　　者：周新年[1] 巫志龙[1] 郑丽凤[1] 蔡瑞添 罗积长 林海明 

机构地区：[1]福建农林大学,福州350002 [2]福建省建瓯市林业局,建瓯353100

出　　处：《林业科学》2008年第10期25-28,共4页Scientia Silvae Sinicae

基　　金：福建省自然科学基金资助项目(2006J0301);福建省科技厅重点科学基金资助项目(2007N0002,2006F5006);福建省林业厅科学基金资助项目(闽林科[2006]7号第14项)

摘　　要：以天然针阔混交林为研究对象,对4种不同强度(弱度、中度、强度、极强度)择伐10年后林地凋落物进行收集、取样和化学分析。结果表明:不同强度择伐作业10年后林地凋落物现存量和养分总量均下降,且下降幅度随采伐强度的增大而加大。强度择伐和极强度择伐10年后林地凋落物及其养分含量仍未恢复,但弱度择伐和中度择伐则与未采伐林地比较接近,说明弱度和中度择伐林地凋落物及养分含量在择伐10年后基本得到恢复。Regard natural mixed stand of coniferous and broad-leaved trees as the research object, all the litter in different cutting operation sites after ten years （ low intensity, middle intensity, high intensity, over-high intensity） was collected, sampled and chemically. The results showed that biomass of forest litter and total nutrient contents generally reduced with the cutting intensity increasing. Biomass of forest litter and total nutrient contents in high and over-high intensity selective cutting site after ten years were not recovered after ten years, but which in low and middle intensity selective cutting site were close to non cutting. It showed that low and middle intensity selective cutting were basically recovered after ten years.

关 键 词：天然针阔混交林 择伐 凋落物现存量 养分含量 

分 类 号：S718[农业科学—林学] TQ351.2[化学工程]