【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。更多还原

【Abstract】 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.更多还原