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首页> 外文期刊>Water resources research >Vegetation-hydrology dynamics in complex terrain of semiarid areas: 1. A mechanistic approach to modeling dynamic feedbacks
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Vegetation-hydrology dynamics in complex terrain of semiarid areas: 1. A mechanistic approach to modeling dynamic feedbacks

机译：半干旱地区复杂地形中的植被-水文动力学：1.建立动态反馈模型的机械方法

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Vegetation, particularly its dynamics, is the often-ignored linchpin of the land-surface hydrology. This work emphasizes the coupled nature of vegetation-water-energy dynamics by considering linkages at timescales that vary from hourly to interannual. A series of two papers is presented. A dynamic ecohydrological model [tRIBS + VEGGIE] is described in this paper. It reproduces essential water and energy processes over the complex topography of a river basin and links them to the basic plant life regulatory processes. The framework focuses on ecohydrology of semiarid environments exhibiting abundant input of solar energy but limiting soil water that correspondingly affects vegetation structure and organization. The mechanisms through which water limitation influences plant dynamics are related to carbon assimilation via the control of photosynthesis and stomatal behavior, carbon allocation, stress-induced foliage loss, as well as recruitment and phenology patterns. This first introductory paper demonstrates model performance using observations for a site located in a semiarid environment of central New Mexico.
机译：植被，尤其是其动力学，是陆面水文学中经常被忽略的关键。这项工作通过考虑从每小时到每年不同的时间尺度上的联系，强调了植被-水-能量动力学的耦合性质。提出了一系列两篇论文。本文描述了一个动态的生态水文模型[tRIBS + VEGGIE]。它在流域的复杂地形上再现了基本的水和能源过程，并将它们与基本的植物生命调节过程联系在一起。该框架着重于半干旱环境的生态水文学，该环境显示出大量的太阳能输入，但限制了土壤水，从而相应地影响了植被的结构和组织。水分限制影响植物动态的机制与碳同化有关，其通过控制光合作用和气孔行为，碳分配，胁迫诱导的叶片损失以及募集和物候模式来实现。该第一篇介绍性论文使用对新墨西哥州中部半干旱环境中的站点的观测资料演示了模型性能。

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