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首页> 外文期刊>Agricultural and Forest Meteorology >Leaf boundary layer conductance in ventilated greenhouses: an experimental approach.
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Leaf boundary layer conductance in ventilated greenhouses: an experimental approach.

机译：通风温室中的叶边界层电导：一种实验方法。

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Improving the design, control and management of greenhouse ventilation systems requires a better insight into the coupling and feedback mechanisms between the crop, the internal atmosphere and the outside atmosphere. The objective of this work was to characterize the leaf boundary-layer conductance (gb) in highly ventilated greenhouse conditions and to study its dependence on the ventilation conductance (gv) and outside conditions. For this purpose, measurements of gb were carried out in a greenhouse cultivated with rose plants, using rose leaf replicas consisting of a pair of artificial leaves, one being heated and the other unheated. The relation between gb and gv was established and quantified, and further generalised to the case of large greenhouses. By implementing the relation into the expression of the canopy aerodynamic conductance, the influence of the leaf area index (LAI) on the total greenhouse conductance was addressed. It was shown that LAI plays a major role in determining the degree of coupling between the greenhouse canopy and the outside atmosphere. The results underline the importance of integrating estimates of the canopy aerodynamic conductance in greenhouse climate control algorithms..
机译：改善温室通风系统的设计，控制和管理需要更好地了解作物，内部大气和外部大气之间的耦合和反馈机制。这项工作的目的是表征高通风温室条件下的叶片边界层电导（gb），并研究其对通风电导（gv）和外界条件的依赖性。为了这个目的，在由玫瑰植物栽培的温室中进行gb的测量，使用由一对人造叶子组成的玫瑰叶子复制品，一个被加热而另一个未被加热。建立并量化了gb和gv之间的关系，并进一步推广到大型温室的情况。通过将这种关系体现在冠层空气动力学电导率的表达中，解决了叶面积指数（LAI）对总温室电导率的影响。结果表明，LAI在确定温室冠层与外部大气之间的耦合程度方面起着重要作用。结果强调了在温室气候控制算法中整合冠层空气动力传导估计的重要性。

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