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首页> 外文期刊>生态学研究(英文) >Effects of Canopy Closure on Photosynthetic Characteristics of Ilex latifolia Thunb.in Phyllostachys pubescens Forests
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Effects of Canopy Closure on Photosynthetic Characteristics of Ilex latifolia Thunb.in Phyllostachys pubescens Forests

机译：封顶对毛竹林冬青光合特性的影响。

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摘要

Plantation under the forest is a good way of agroforestry,but the canopy closure has a great influence on understory herbs’growth.In the study,different canopy closures of Phyllostachys pubescens forests were set up to explore its influence on the growth of Ilex latifolia Thunb.The photosynthetic characteristics of Ilex latifolia leaves under different canopy closures were determined by Li-6400 portable photosynthetic system.The results showed that the net photosynthetic rate curve of Ilex latifolia leaves of T1(canopy closure of 0.56)was bimodal with an obvious"midday depression"phenomenon,while the net photosynthetic rate curves of T2(canopy closure of 0.72)and T3(canopy closure of 0.86)were unimodal.The results of light response curve showed that the photosynthetically active radiation and transpiration rate reduced with the increasing of canopy closures.The photosynthetically active radiation,transpiration rate,stomatal conductance,and net photosynthetic rate of Ilex latifolia leaves of T2 were higher than those of T3.Although the net photosynthetic rate of T2 was lower than that of T1,it had no obvious photo-inhibition which affected plant growth.Overall,the canopy closure of 0.72 was more suitable for the growth of Ilex latifolia.The herb plantation in the bamboo forest should be considered with the canopy closure for a better growth.
机译：森林下的种植园是农林美味的好方法，但是冠层封闭对林下草本生长有很大影响。在该研究中，建立了Phyllostachys Pubescens森林的不同冠层闭合，以探讨其对Ilex Latifolia Thunb的生长的影响。Ilex Latifolia叶片在不同的冠层封闭下的叶片的光合特性由Li-6400便携式光合系统确定。结果表明，ILEX Latifolia叶片的净光合速率曲线T1（冠层闭合0.56）是具有明显“午间”的双峰抑郁症“现象，而T2的净光合速率曲线（冠层闭合0.72）和T3（冠复闭合为0.86）是单峰的。光响应曲线的结果表明，光合作用辐射和蒸腾率随着树冠的增加而降低封闭。光合作用的辐射，蒸腾率，气孔电导和inlex Latifolia Leav的净光合速率T2的ES高于T3.虽然T2的净光合速率低于T1的净光合速率，但它没有影响植物生长的明显照片抑制。overall，0.72的冠层闭合更适合于生长伊斯克斯拉脱佳洛伐克。竹林中的草药种植园应考虑随着树冠的封闭，以获得更好的增长。

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