Developing a system to evaluate forest water use in large scale area using objective model redundance method

在本研究中，我们开发了大尺度区域森林用水评估系统，以整合Crout等人（2009）开发的目标模型Redestimation方法。我们的系统是基于Biome-BGC，这是一个森林生态系统模型，引入指数坦克模型（Kondo et al.，1992年），以考虑在日本的山地森林流域的流量的特点。我们检查了新开发的系统，在日本九州地区的山地森林实验集水区获得的观测数据的模型性能，并研究了重要的模型参数重现日本森林生态系统的日流量和蒸散量。

In this present study, we developed the system to evaluate forest water use in large scale area to integrate the method of objective model redundance developed by Crout et al. (2009). Our system is besed on Biome-BGC, which is one of the forest ecosystem model, with introducing exponential tank model (Kondo et al., 1992) to take into account the characteristics of discharge at mountainous forest watershed in Japan. We checked the model performance of new developed system using observed data obtained at mountainous forest experimental watershed located in Kyushu region, Japan and investigated significant model parameters on reproduce the daily discharge and evapotranspiration in Japanese forest ecosystem.