A combination model for estimating stomatal conductance of maize (Zea mays L.) leaves over a long term
A combination model for estimating stomatal conductance of maize (Zea mays L.) leaves over a long term
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DOI：
10.1016/s0168-1923(98)00087-2
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发表时间：
1998-07
影响因子：
6.2
通讯作者：
Guirui Yu;K. Nakayama;N. Matsuoka;H. Kon
中科院分区：
文献类型：
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作者：
Guirui Yu;K. Nakayama;N. Matsuoka;H. Kon
本研究建立了一个估算玉米气孔导度的环境变量模型。根据有关气孔导度对环境变量的响应的研究结果，开发了长期叶片。该模型实际上是白天潜在气孔导度PSC和白天气孔相对开放程度RDO的优化公式的组合，其基本形式表示为日间因子和日内因子的乘积。我们将这种环境变量模型称为组合模型。与以往提出的其他模型相比，该组合模型不仅可以估计白天气孔导度的最大值和平均值，而且还可以估计瞬时值，因此在实际应用中很方便。同时，通过引入环境压力的概念，阐明了该模型的理论描述。与Jarvis-型乘法环境变量模型相比，我们认为该组合模型是对Jarvis-型模型的改进和发展。
In this study, an environmental variable model for estimating stomatal conductance of maize (Zea mays L.) leaves over a long term is developed, based on research results concerning responses of stomatal conductance to environmental variables. This model is actually a combination of optimized formulae for potential stomatal conductance during daytime, PSC, and for the relative degree of stomatal opening during daytime, RDO, with a basic form expressed as a multiplication of inter-day and intra-day factors. We call this environmental variable model as the combination model. Compared with other models presented in the past, this combination model is convenient in practical use because it can estimate not only maximum and average values but also instantaneous values of stomatal conductance during daytime. Also, the theoretical description of this model has been clarified by introducing into it the concept of environmental stress. As compared with Jarvis-type multiplication environmental variable models, we think this combination model is a refinement and development of the Jarvis-type models.