本文概述了陆地水文循环过程,绘制了水文年多年平均月降水与月径流增长与衰

本文概述了陆地水文循环过程,绘制了水文年多年平均月降水与月径流增长与衰减的循环过程线图,汛期各月是降水径流的增长生成期,自汛期过后的多数月份是降水径流的衰减消耗期,直观的说明了水文年水循环过程是一个相对完整的陆地水文循环过程。汛期四个月的月降水径流相关关系较好,趋势较为明显,其余各月的降水径流关系相对较差。每年5月起至次年4月为一个水文年的年降雨径流相关系数为0.9324,相关关系相对较好。每年5月至10月,这个时段的降水径流相关关系较好,相关系数为0.9426。每年11月起至次年3月,上下月间的径流深具有较好的相关关系,证明了这个时段的径流是汛期降水径流过程的地下水衰减过程。本文为水资源按水文年来进行开发利用和管理提供一点有益的探讨。

This paper summarizes the land hydrological cycle process, and draws the cycle process line diagram of the growth and attenuation of multi-year average monthly precipitation and monthly runoff in the hydrological year. Each month in the flood season is the growth and generation period of precipitation runoff, and most months after the flood season are the attenuation and consumption period of precipitation runoff. It intuitively shows that the water cycle process in the hydrological year is a relatively complete land hydrological cycle process. The relationship between monthly precipitation and runoff in the four months of flood season is good and the trend is obvious, while the relationship between precipitation and runoff in the other months is relatively poor. The correlation coefficient of annual rainfall and runoff from May to April of the next year is 0.9324, and the correlation is relatively good. From May to October every year, the correlation between precipitation and runoff in this period is good, and the correlation coefficient is 0.9426. There is a good correlation between the runoff depth from November to march of the next year, which proves that the runoff in this period is the groundwater attenuation process of precipitation runoff process in flood season. This paper provides a useful discussion for the development, utilization and management of water resources according to hydrological years.

In this paper, the land hydrological cycle process is summarized, and the graph of the cycle process of annual average monthly precipitation and monthly runoff growth and decline is drawn. The months in flood season are the growth and generation periods of precipitation runoff, and most months after flood season are the decline and consumption periods of precipitation runoff, which intuitively shows that the water cycle process in hydrological year is a relatively complete land hydrological cycle process. The relationship between monthly precipitation and runoff in four months of flood season is good, and the trend is obvious, while the relationship between precipitation and runoff in other months is relatively poor. The annual rainfall-runoff correlation coefficient of a hydrological year from May to April of the following year is 0.9324, and the correlation is relatively good. Every year from May to October, there is a good correlation between precipitation and runoff in this period, and the correlation coefficient is 0.9426. From November every year to March next year, there is a good correlation between the runoff depth between the upper and lower months, which proves that the runoff in this period is the groundwater attenuation process of precipitation runoff in flood season. This paper provides a useful discussion for the development, utilization and management of water resources according to hydrological year.