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 |
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引用本文: | 苏素霞,卢小兰,樊后保,李丽红,刘春华,蒋宗垲.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[J].福建林业科技,2003,30(3):43-46. |
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作者姓名: | 苏素霞 卢小兰 樊后保 李丽红 刘春华 蒋宗垲 |
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作者单位: | 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 |
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基金项目: | 福建省科技厅科研项目,99-Z-112-2, |
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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。
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关 键 词: | 马尾松 针阔异龄混交林 凋落物现存量 年凋落量 凋落物周转时间 |
文章编号: | 1002-7351(2003)03-0043-04 |
修稿时间: | 2003年3月19日 |
Studies on the Litter Ecology of Pinus massoniana Forest Interplanted with the Broad-Leaved Trees under Stands IV.The Litter Turnover Time |
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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 9880kg/hm2 and 9 2698kg/hm2,whereas annual litter range is 2 8530~7 0780kg/hm2Based 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 115 years,076 year,142 years,097 year,117 years,084 year and 152 years accordingly. |
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Keywords: | Pinus massoniana coniferous and broad-leaved uneven-aged mixed forest present litter stocking annual withered and fallen amounts litter turnover time |
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