| 亚热带4种森林凋落物量及其动态特征 |
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| 引用本文： | 徐旺明,闫文德,李洁冰,赵晶,王光军.亚热带4种森林凋落物量及其动态特征[J].生态学报,2013,33(23):7570-7575. |
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| 作者姓名： | 徐旺明 闫文德 李洁冰 赵晶 王光军 |
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| 作者单位： | 中南林业科技大学 长沙410004,中南林业科技大学 长沙410004,中南林业科技大学 长沙410004,中南林业科技大学 长沙410004 |
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| 基金项目： | 十二五科技支撑项目(2011BAD38B0204)、林业公益性科研专项(20080430)、教育部新世纪优秀人才支持计划(NCET-10-0151) |
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| 摘 要： | 通过对枫香林、樟树林、马尾松林、樟树—马尾松混交林4种森林生态系统的凋落物数量及组成进行为期1a的定位研究。结果表明,樟树—马尾松混交林的年凋落总量(4.30 t.hm-2)＞枫香林(3.66 t.hm-2)＞马尾松林(3.41 t.hm-2)＞樟树林(3.26 t.hm-2)。各组分凋落物中,凋落叶占绝对优势(70%以上),表现为樟树—马尾松混交林(3.09 t.hm-2)＞枫香林(2.78 t.hm-2)＞马尾松林(2.46 t.hm-2)＞樟树林(2.32 t.hm-2)；凋落枝表现为樟树—马尾松混交林(0.73 t.hm-2)＞樟树林(0.53 t.hm-2)＞马尾松林(0.30 t.hm-2)＞枫香林(0.22 t.hm-2)；凋落果表现为马尾松林(0.37 t.hm-2)＞樟树—马尾松混交林(0.17 t.hm-2)＞枫香林(0.12 t.hm-2)＞樟树林(0.09 t.hm-2)；碎屑表现为枫香林(0.55 t.hm-2)＞樟树林(0.33 t.hm-2)＞樟树—马尾松混交林(0.31 t.hm-2)＞马尾松林(0.27 t.hm-2)。枫香和樟树林年凋落量的最大值分别在10月(1.22 t.hm-2)和8月(0.58 t.hm-2),而马尾松林和混交林年凋落量的最大值都在11月(分别为0.77 t.hm-2和1.23 t.hm-2)。
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| 关 键 词： | 凋落物 总凋落量 各组分凋落量 动态 |
| 收稿时间： | 2011/2/21 0:00:00 |
| 修稿时间： | 2013/9/22 0:00:00 |
Amount and dynamic characteristics of litterfall in four forest types in subtropical China |
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| XU Wangming,YAN Wende,LI Jiebing,ZHAO Jing and WANG Guangjun.Amount and dynamic characteristics of litterfall in four forest types in subtropical China[J].Acta Ecologica Sinica,2013,33(23):7570-7575. |
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| Authors: | XU Wangming YAN Wende LI Jiebing ZHAO Jing and WANG Guangjun |
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| Institution: | Central South University of Forestry and Technology Chang sha 410004,Central South University of Forestry and Technology Chang sha 410004,Central South University of Forestry and Technology Chang sha 410004,Central South University of Forestry and Technology Chang sha 410004 |
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| Abstract: | By the method of litterfall trap, and from October 2009 to October 2010, an investigation was made on the amount, composition and dynamic charcteristics of the litterfalls in four typical forests(Liquidambar formosana, Cinnamomum camphora, Pinus massoniana, and Camphor-Pine mixed forest) of Hunan Province, subtropical China.The results showed that the annual litterfall amount and the litter composition differed obviously among the four forest types.The Camphora-Pinus mixed forest had the largest annual litterfall amount(about 4.30 t/hm2), followed by Liquidambar forest, Pinus forest and Cinnamomum camphora forest.In different plant components,the leaf litter had the largest annual litterfall amount (above 70%),Such as Camphora-Pinus mixed forest (3.09 t/hm2) > Liquidambar (2.78 t/hm2) > Pinus (2.46 t/hm2) > Camphora (2.32 t/hm2). Branch litter showed that Camphora-Pinus mixed forest (0.73 t/hm2) > Camphora (0.53 t/hm2) > Pinus (0.30 t/hm2) > Liquidambar (0.22 t/hm2). The Pinus forest had the largest annual fruit litter amount(about 10.95%). The Liquidambar forest had the largest annual miscellany amount(about 14.91%).In October, Liquidambar forest had the largest annual litterfall amount (1.22 t/hm2) and in August, Camphora had the largest annual litterfall amount (0.58 t/hm2), the Pinus and Camphora-Pinus mixed forest had the largest annual litterfall amount in November (0.77 t/hm2 and 1.23 t/hm2).The research showed that the amount of branch litter was less than the amount miscellany. The litter production of the dominant species greatly influenced the dynamics of total litter production. |
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| Keywords: | Litter Litter production Component production Dynamics |
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