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SCI论文目录 |
红松阔叶林倒木贮量动态的研究 |
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| 出 版 社：应用生态学报 |
| 发表时间：1999，10(5):513～517 |
| 台 站：
长白山森林生态系统定位研究站
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| 作 者：代力民,徐振邦,杨丽韫,曹玉明 |
| 点 击 率：12082 |
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| 关 键 字：倒木分解 红松 椴树 红松阔叶林 |
摘 要：在森林倒木研究的基础上探讨长白山红松阔叶林倒木贮量的动态，涉及红松阔叶林倒木分解及其贮量的动态规律。研究表明，倒木分解除心腐木外，均由表及里进行；倒木分解速率在其它生态条件相同时因树种、直径和部位而异。红松阔叶林倒木贮量动态包括现有倒木贮量和倒木年输入量两个分解动态过程。现有倒木贮量在头100年其干重迅速减少，其中椴树比红尤速，前者分解915，后者为72%。林地倒木贮量动态与倒木年输入量分解动态相似，但前者在分解初期贮量增加较大，因为部分现有倒木未完全分解；100年后趋于一致，并恒定于16-17t.hm-2，直至群落的顶级阶段结束.
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| 关 键 字(英文)：decomposition of fallen trees , Korean pine, basswood, Korean pine broad-leaved forest |
摘 要(英文)：Based on the previous research on fallen trees in forest ,the storage dynamics of fallen trees in Korean pine broad-leaved forest in Changbai Mountain and its relation to the dynamic patterns of their decomposition were studied .The study revealed that the decomposition of fallen trees was from the surface to the inside ,except the heart-rot woods .Under the same ecological conditions, the decomposition rate was decided by their species ,diameter and position .The storage dynamics of fallen trees in Korean pine broad-leaved forest included two aspects ,i.e.,the storage now available and the annual input of fallen trees .The dry existing fallen trees reduced rapidly during the first 100 years storage ,and the decomposition of the basswood was faster than that of the Korean pine ,the former being decomposed 91% and the latter being 72%.The storage dynamics of the fallen trees was similar with their annual input decomposition ,but the former increased considerably greater,because some fallen trees were not decomposed completely .After 100 years ,the existing storage and decomposition tended to stabilized at 16-17t.hm-2 until the climax community ended .
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