| 油松对松毛虫危害的补偿机制研究 |
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| 引用本文： | 许志春,李凯.油松对松毛虫危害的补偿机制研究[J].北京林业大学学报,1996,18(1):61-65. |
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| 作者姓名： | 许志春 李凯 |
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| 作者单位： | 北京林业大学森林资源与环境学院 |
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| 摘 要： | 采取人工模拟松毛虫取食的方法，摘去油松部分２，３年生针叶，发现油松失去部分针叶后光合强度有所提高，并对当年新叶生长量没有影响．这表明油松受害后，其光合产量的增加是通过提高光合强度实现的．通过对组建的失叶率与初级产量关系模型分析，求出了不同失叶水平下的补偿点和超补偿点．当失叶率为２５％时，其初级产量不受当年新叶量多少的影响，始终高于对照组，其超补偿的表现相对稳定；当失叶率为５０％时，其补偿量随当年新生叶量而变化，表现出超补偿、补偿、准补偿，使“油松允许失叶量在５０％左右”有了一个可信的解释，为进一步研究油松被害后的补偿与超补偿机制提供了依据
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| 关 键 词： | 油松，松毛虫，光合作用，初级产量，补偿作用 |
Compensative Merchanism of Chinese Pine Damaged by Pine Caterpillars |
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| Xu Zhichun,Li Kai,Li Zhenyu,Zhou Qing.Compensative Merchanism of Chinese Pine Damaged by Pine Caterpillars[J].Journal of Beijing Forestry University,1996,18(1):61-65. |
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| Authors: | Xu Zhichun Li Kai Li Zhenyu Zhou Qing |
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| Abstract: | To determine the compensative ways of Chinese pine damaged by pine caterpillar, the leaves of Chinese pine were artificialy defoliated to a certain degree in simulative experiment from May to June in 1994. The data show that photosynthesis of the left leaves is increased significantly, but there are no great difference in growing yield between the contrast, 25% and 50% defoliating levels. The results indicate that, ① the raise of damaged Chinese pine photosynthetic yield is due to its increasing photosynthesis, not by leave biomass;② the photosynthetic yield of 25% defoliating level Chinese pine is higher than the contrast and it has a stable super compensation;③ the super compensative ability has nothing to do with new leaves biomass, but at 50% defoliating level the para-compensation, the compensation, the super compensation are influenced intensively by new leaves biomass. |
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| Keywords: | Chinese pine pine caterpillars photosynthesis gross primary production compensation |
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