A Watershed Simulation Model with Vegetation

开发精确、高效的模拟计算 水文过程和植被的模型需要使用 在全球气候模型中。 验证这些模型的方法需要 范围更广，更容易在不同时间实施， 长度刻度。 本研究的目的是开发和测试 一个流域模拟模型，其中包括模拟 植被对水文条件变化的响应。 一个 这项研究的一个重要目的是找出是否 利用该方法可以准确地评价流域水文状况， 植被遥感观测和模拟模型。 我们的方法涉及流域模拟模型的发展 它整合了现有的陆基、机载和卫星 在Uinta山脉的一个分水岭的观察。 植物人 分配将基于美国鱼类和野生动物管理局的 数字植被数据库 该模型将用于模拟 植被的响应（即，蒸腾作用，同化作用，叶片 生长（abcission）与环境条件和模型值的关系 土壤湿度，土壤温度，径流，蒸腾作用， 将比较表面温度、叶面积和同化作用 测量值。我们将对土壤进行新的实地测量 湿度、温度、蒸腾作用和光合作用。 我们将 还使用业务气象和水文数据进行模型 初始化和验证。 最后，敏感性 将研究模型参数的预测。

Development of accurate, computationally efficient simulation models for hydrologic processes and vegetation is needed for use in global climate models. Methods for validating such models need to be broader in scope and easier to implement on various time and length scales. The objective of this study is to develop and test a watershed simulation model which includes simulation of the response of vegetation to changing hydrologic conditions. An important objective of this study is to find out whether the hydrologic status of watersheds can be assessed accurately by using remote sensing observations of vegetation and simulation models. Our approach involves development of a watershed simulation model which integrates existing ground-based, airborne, and satellite observations of a watershed in the Uinta Mountains. The vegetaton distribution will be based on the U.S. Fish and Wildlife Service's digital vegetation database. The model will be used to simulate the response of vegetation (i.e., transpiration, assimilation, leaf growth the abcission) to environmental conditions and model values of soil moisture, soil temperature, streamflow, transpiration, surface temperature, leaf area, and assimilation will be compared to measured values. We will make new field measurements of soil moisture, temperature, transpiration, and photosynthesis. We will also use operational meteorological and hydrologic data for model initialization and validation. Finally, the sensitivity of predictions to model parameters will be investigated.