【摘要】 <正> 在土壤侵蚀预报研究工作中,采用人工模拟降雨装置进行降雨试验,是加快研究工作进程的重要手段.开展天然降雨雨滴特性的研究,对于更好地进行人工模拟降雨试验又有着十分重要的意义.我们于1983、1984、1986年进行了辽西低山丘陵半干旱地区天然降雨雨滴特性的观测研究,现将研究结果报告如下.一、研究内容与研究方法(一)研究内容观测分析辽西低山丘陵半干旱地区天然降雨的雨滴组成与分布、雨滴中数直径与雨强、雨滴动能与雨强等雨滴特性,是研究的主要内容.更多还原

【Abstract】 Study on the characteristics of raindrops bears significantly on further experi mentation on simulated rainfalls. The size and composition of raindrops are determined by measuring color spots on filters, from which the composition and distribution of raindrops of different sizes, the median diameter of raindrops, the intensity of rainfall (Ⅰ), the kinetic energy of raindrop ( E), and the effect of rainfall intensity and pattern on the characteristics of the raindrops are studied in a systematic way. It is suggested that the characteristics of raindrops in semiarid rolling area of W. Liaoning are power functions of rainfall intensity whereas ragional, and climatic factors and geographical location are of minor importance with respect to effect on raindrop characteristics. The effect of rainfall pattern on erosion should not, however, be ignored.更多还原