Simulation of Rhythmic Tree Growth under Constant Conditions
Simulation of Rhythmic Tree Growth under Constant Conditions
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恒定条件下有节奏的树木生长模拟
DOI：
10.1111/j.1399-3054.1973.tb03087.x
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发表时间：
1973
影响因子：
6.4
通讯作者：
R. Borchert
中科院分区：
文献类型：
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作者：
R. Borchert
在相对均匀的环境条件下，树木的节律性生长，有的作者认为是内源性的，有的则认为是环境因素的轻微波动。建立了一个模拟植物生长节律的模型，该模型假设植物生长的内源节律是由两个潜在连续过程（如芽和根的生长）之间的反馈相互作用引起的，如果较慢的过程对较快的过程是速率限制的话。树木的节律性生长是维持恒定的枝根比所需的反馈机制的结果。节奏的周期长度取决于所涉及的生长过程的速率。环境因子通过影响生长速率来改变周期长度。该模型预测的生长模式与热带树木的生长测量比较。生长从间歇性到连续性生长的转变，如在一定条件下观察到的。条件下，可以通过改变模型中的单个参数来模拟。
The observ·ed rhythmic growth of trees under relatively uniform environmental conditions has been ascribed by some authors to endogenous factors, by others to slight fluctua tions of environmental factors. A model for the simulation of rhythmic growth was developed based on the assumption that endogenous rhythms can result from feedback inter action between two potentially continuous processes, like shoot and root growth, if the slower process is rate limiting for the faster one. Rhythmic growth in trees would be the consequence of feedback mechanisms needed for maintaining a constant shoot : root ratio. Period length of the rhythms depends upon the rates of the growth processes involved. Em·ironmental factors modify period length through affect ing growth rates. Growth patterns predicted by the model compare well with growth measurements of tropical trees. The transition from intermittent to continuous growth, as ob served under certain. conditions, can be simulated by varying a single parameter in the model.