红松（Pinus koraiensis）针叶的凋落及其分解速研究Study on decomposition rate and fall of Pinus koraiensis needle-leaf |
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| 出 版 社：生态学报 |
| 发表时间：2001，21(8):129―133 |
| 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，徐振邦等 |
| 点 击 率：18316 |
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| 关 键 字：红松（Pinus koraiensis）针叶,凋落, 分解率 |
摘 要：在长白山森林生态系统研究中，对红松（Pinus koraiensis）针叶凋落情况及其分解过程研究很少，本文是通过调查实验填补这一方面的不足。研究表明，红松针叶一般可存活3-4a，调查中存活最长的为6a。红松针叶的寿命与光照密切相关，在针叶密集透光不足的地方针叶寿命较短。红松针叶凋落后，在林地上分解较快，一般4a后其干重保持率为16.6% 。红松针叶的分解率与海拔和植被类型密切相关。在海拔低的红松阔叶林下，因气温高，分解较快；在海拔较高的云冷杉红松林和岳桦林中分解速度变慢；在高山苔原带分解最慢。
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| 关 键 字(英文)：Pinus koraiensis, fall, decomposition rate |
摘 要(英文)：The study on fall and decomposition of Pinus korainsis, needle-leaf is very deficient in ChangBai ?Mountain forest ecosystem. This article fills the lack according to investigations and tests. The study shows that the age of Pinus korainsis needle-leaf is often 3-4 years, and the longest age is 6 year. The age has intimate relation with illumination. Needle-leaf has short age at thick part where light is short. After the needle leaf faded, its decomposition is fast. Dry weight has 16.6% after four years. The decomposition has been a very close relation with altitude and vegetation type. In Pinus koraiensis and broad leaf forest, the decomposition is faster because of high temperature and low altitude, it is slow in dark coniferous forest and Betula ermanii forest and it is the slowest at Alpine tundra belt.
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