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基于闭合流域系统水量输入输出平衡原理,推导出流域系统水文动态过程理想状态的原理模型.研究对象选择人为作用在近40年相对变化不大,而森林状态变化较大的流域,收集流域内连续30多年的水文气象观测资料,以5年为一组数据,对流域系统不同时期的水文动态过程作了辨识和仿真,比较不同时期水文动态过程特征与森林状态,给出了森林水文作用的评估.
Based on the principle of balanced input and output of water flow in closed basin, the principle model of ideal state of hydrological dynamic process in drainage basin was deduced.The anthropogenic effects of the study object were relatively unchanged in recent 40 years, while the changes in forest status were continuous, For more than 30 years of hydrological and meteorological observation data, a series of five-year data are used to identify and simulate the hydrological dynamic processes in different periods of the drainage system. Hydrological dynamic process characteristics and forest status in different periods are compared to evaluate the hydrological effects of forests .