Regional Water and Soil Assessment for Managing Sustainable Agriculture in China and Australia
Regional Water and Soil Assessment for Managing Sustainable Agriculture in China and Australia
复制标题
中国和澳大利亚管理可持续农业的区域水和土壤评估
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
L. Changming
中科院分区：
文献类型：
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作者：
L. Rui;J. Walker;R. Fitzpatrick;L. Changming
许多环境问题是由水循环各方面的变化引起的。水平衡模型与实地试验相结合，可以使我们更好地了解水文循环的组成部分，从而制定适当的管理方案。水平衡模型可以在任何复杂程度上构建。在简单的آucket٠models中只表示最重要的过程。如果使用得当，桶模型可以对系统的功能行为提供有用的见解。复杂的模型需要理解复杂的反馈和系统中不同过程之间的相互作用。然而，增加模型的复杂性并不一定会导致更准确的模型，模型复杂性必须与数据的可用性相匹配。成功建立水平衡模型的关键是要有明确的目标，并选择合适的模型。本章概述了水平衡模型的原理，并解释了如何在作物管理中使用模型。
Many environmental problems are caused by changes in aspects of the hydrological cycle. Water balance modelling combined with field experiments can give us a better understanding of the components of the hydrological cycle from which to develop appropriate management options. Water balance models can be constructed at any level of complexity. In simple آucket٠models only the most important processes are represented. When appropriately used, bucket models can provide useful insights into the functional behaviour of a system. Complex models are needed to understand complex feedbacks and interactions among different processes of the system. However, increasing the complexity of a model does not necessarily lead to a more accurate model and it is essential that model complexity matches the availability of data. The key to successful water balance modelling is to have a clearly defined objective and to select an appropriate model. This chapter outlines the principles of water balance modelling and explains how models can be used in crop management.