马尾松林下套种阔叶树的凋落物生态学研究 Ⅳ.凋落物的周转时间  

Studies on the Litter Ecology of Pinus massoniana Forest Interplanted with the Broad-Leaved Trees under Stands IV.The Litter Turnover Time

作　　者：苏素霞[1] 卢小兰 樊后保[3] 李丽红[1] 刘春华[1] 蒋宗垲[1] 

机构地区：[1]福建农林大学莘口教学林场,福建三明365000 [2]福建省平和县林业局,福建平和363709 [3]福建农林大学林学院,福建南平353001

出　　处：《福建林业科技》2003年第3期43-46,共4页Journal of Fujian Forestry Science and Technology

基　　金：福建省科学技术委员会科学基金资助项目(99-Z-112-2)

摘　　要：在马尾松林冠下分别套种火力楠、拉氏栲、青栲、闽粤栲、格氏栲和苦槠,形成针阔混交异龄林模式,通过对各林分凋落物的研究表明,上述6个混交林群落及马尾松纯林的林地凋落物现存量变化在3988 0～9269 8kg·hm-2之间,而年凋落量范围为2853 0～7078 0kg·hm-2。基于对凋落量积累和分解速率的比较分析,可预测上述7个群落的凋落物周转时间依次为1 15、0 76、1 42、0 97、1 17、0 84及1 52a。对凋落物各组分的进一步分析表明,枯枝的周转时间明显大于枯叶,且马尾松的枯叶和枯枝的周转时间分别相应大于与其混交的阔叶树。The study shows that the present forest land litter stocking of Michelia macclurei,Castanopsis lamontii,Cyclobalanopsis myrsinaefolia,C.fissa,C.kawakamii and C.sclerophylla mixed forest communities,and pure Pinus massoniana changes between 3 9880kg/hm2 and 9 2698kg/hm2,whereas annual litter range is 2 8530～7 0780kg/hm2Based on the Comparative analyses of withered and fallen amount accumulations,as well as with ered and fallen rates,the litter turnover time of the aboved 7 communities is 115 years,076 year,142 years,097 year,117 years,084 year and 152 years accordingly.

关 键 词：马尾松 林下套种 阔叶树 凋落物 生态学 周转时间 现存量 

分 类 号：S791.248[农业科学—林木遗传育种] S718.554[农业科学—林学]