不同栽植代数杉木林凋落物特性的比较  

COMPARISON ON LITTER FALL CHARACTER IN DIFFERENT GENERATION PLANTATIONS OF CHINESE FIR

作　　者：刘爱琴[1] 林开敏[1] 范少辉[2] 马祥庆[1] 盛炜彤[2] 

机构地区：[1]福建农林大学福建杉木研究中心,福州350002 [2]中国林业科学研究院林业研究所,北京100091

出　　处：《应用与环境生物学报》2004年第5期585-590,共6页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金重点项目 (39630 2 4 0 );福建省自然科学基金资助项目 (B0 1 1 0 0 2 3)~~

摘　　要：在全国杉木中心产区福建建瓯 ,选择不同栽植代数、不同发育阶段的杉木人工林 ,进行凋落物特性的比较研究 .结果表明 :不同栽植代数杉木林凋落物年产量有显著差异 ,表现出随栽植代数增加而减少的趋势 .不同栽植代数杉木林的凋落物组成、凋落动态及其分解速率差异不明显 .但杉木刚掉落凋落物与地面凋落物的分解状况存在明显差异 ,刚掉落凋落物的分解速率明显低于地面凋落物 ,而且刚掉落杉木凋落物的周转期高于地面凋落物 ,因此在杉木林地上随意选取凋落物样品进行凋落物分解试验 ,不能反映整个林分凋落物的分解状况 .图 2表 5参 2Chinese fir 〔Cunninghamia lanceolata (Lamb.) Hook.〕, a fast-growing, evergreen conifer tree with high yield and excellent quality, is the most important tree species for timber production in subtropical China. Litterfall characters in different generation and age plantations of Chinese fir were studied in Fujian Province, southeast China. The results showed that there were significant differences among the annual litterfall production and no siginificant differences among litter compositions, seasonal dynamic and decomposition rates in different rotation plantations. As the planting generation increased, annual litterfall production decreased. There was significant difference in the decomposition rate between the new litterfall and old litterfall. The decomposition rate of the new litterfall was lower than that of the old litterfall. However, its litterfall turn-over period was higher than that of old one. Therefore, the random samples for litterfall decomposition experiment couldn′t indicate real litterfall decomposition condition in Chinese fir plantations. Fig 2, Tab 5, Ref 24

关 键 词：杉木 栽植代数 凋落物 地力衰退 

分 类 号：S718.554.2[农业科学—林学]