鼎湖山演替系列中代表性森林凋落物的研究 |
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出 版 社：生态学报 |
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发表时间：2000 |
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台 站：鼎湖山森林生态系统定位研究站 |
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作 者：张德强、叶万辉、余清发、孔国辉、张佑昌
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点 击 率：75843 |
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关 键 字：鼎湖山,演替系列,代表性森林,凋落物。 |
| 摘 要：研究鼎湖山演替系列中代表性森林―季风常绿阔叶林（简称阔叶林）、针阔叶混交林（简称混交林）和针叶林（或马尾松林）的凋落物产量、组成特征和季节动态变化及其分解速率，结果表明：其年均凋落物量（t.hm2）分别为8.28(7.57~9.12)、8.50(7.85~9.26)和3.31(2.45~3.74)；叶、枝和花果杂物的比例（％）分别为61:17:22、67:16:17和78:4:18；凋落物的凋落高峰出现在雨季初期和旱季前期；凋落物的年均分解速率（%）分别为49.16、40.84和36.94，差异显著。不同森林凋落物分解速率差异显著的产生是在凋落物分解前期形成的。 |
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关 键 字(英文)：Dinghushan , successional series , representative forests , litter-fall |
| 摘 要(英文)：The production,composition, seasonal dynamics and its decomposition rate of litter-fall of representative forests ―monsoon evergreen broad leaved forest (B.F.) and needle broadleaf mixed forest (M.F.) and coniferous forest (C.F.)of successional series in Dinghushan were studied. The results showed that the mean annual litter-fall productions (t.hm-2) were 8.28(7.57~9.12) and 8.50(7.85~9.26) and 3.31(2.45~3.74), respectively. The litter-fall contained leaves 61%, branches 17%, flowers and other mixed-matter 22% in B.F. and 67%, 16%, 17% in M.F. and 78%, 4%, 18% in C.F. , respectely. The litter-fall peak appeared at of rain season and earlier stage of dry season. The mean annual decomposition rate (% mixed litter) were 49.15 and 40.84 and 36.94, respectively. The significantly different decomposition rates of litters from three forests mainly occurred in the early stage of decomposition process. |
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