Modelling Potential Crop Growth Processes
Modelling Potential Crop Growth Processes
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DOI：
10.1007/978-94-011-0750-1
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
J. Goudriaan;H. H. Laar-H.
中科院分区：
文献类型：
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作者：
J. Goudriaan;H. H. Laar-H.
我们将本书献给CT de Wit教授（1924-1993），他在瓦赫宁根农业大学开创了生产生态学的思想流派（见Rabbinge等，1990年）。为了表彰CT de Wit的领导作用，这所大学最近成立的生产生态学研究生院以他的名字命名。生产生态学是对生态过程的研究，特别关注作为决定生态系统生产力的因素的能量和物质的流动。农业生态系统是生态系统的一个特例，它比自然生态系统更适合于生产力方法。这就是农业研究在生产生态学中发挥重要作用的原因。另一方面，必须认识到自然生态系统的空间异质性及其物种丰富度可能会改变某些生态生理关系。然而，基本的物理、化学和生理过程将是相同的。De Wit介绍了状态变量法作为仿真建模的基础。在这种方法中，自然界的浮动特性被图示为一系列随时间变化的快照，其中状态在每个单独的时刻都被冻结。当前状态决定了变化率将如何导致下一个快照。这种思维方式使相互作用的同时过程的清晰和可行的表示，而不会在数学上妥协。
We dedicate this book to professor CT de Wit (1924-1993) who initiated Production Ecology as a school of thought at the Wageningen Agricultural Univer sity (see Rabbinge et at., 1990). To acknowledge the leading role of CT de Wit, a recently formed graduate school at this university in Production Ecology was named after him. Production Ecology is the study of ecological processes, with special attention to flows of energy and matter as factors that determine the productivity of ecological systems. Agro-ecosystems are a special case of ecosystems which are much better suited for the productivity approach than natural ecosystems are. This is the reason for the strong role of agricultural research in production ecology. On the other hand, it must be recognized that the spatial heterogeneity of natural ecosys tems and their species richness may alter some ecophysiological relationships. However, the basic physical, chemical and physiological processes will be the same. De Wit introduced the state variable approach as the basis for simulation mod elling. In this approach the floating character of nature is schematized into a series of snapshots over time in which the states are frozen at each separate moment. The current state determines how the rates of change will lead to the next snapshot. This way of thinking enables a clear and workable representation of interacting simul taneous processes, without compromising on the mathematics.