北京西山老龄树记载的森林干扰历史
History of forest disturbance recorded by old trees in Xishan Mountain, Beijing
北京西山老龄树记载的森林干扰历史 |
| 张启, 程雪寒, 王树芝 |
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History of forest disturbance recorded by old trees in Xishan Mountain, Beijing |
| ZHANG Qi, CHENG Xue-Han, WANG Shu-Zhi |
| 图3 北京西山老龄树生长释放和生长抑制树木个数随时间的变化。 |
| Fig. 3 Number of old trees with release and suppression changes over time of sampled old trees in Xishan Mountain, Beijing. |
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