WU Guang-yan,WU Fa-qi,YIN Wu-jun,et al.Study on Characteristics of Natural Rainfall in Yangling, Shaanxi Province[J].Research of Soil and Water Conservation,2011,18(01):48-51.
陕西杨凌天然降雨雨滴特性研究
- Title:
- Study on Characteristics of Natural Rainfall in Yangling, Shaanxi Province
- Keywords:
- natural rainfall; rainfall intensity; median raindrop diameter; kinetic energy of rainfall; Yangling of Shaanxi province
- 分类号:
- S157
- 摘要:
- 天然降雨雨滴特性是土壤侵蚀的动力因子之一，是研究降雨侵蚀力规律的基本依据。运用虹吸式雨量计记录杨凌的天然降雨过程，同时采用滤纸色斑法观测天然降雨雨滴的特征，结合图形处理软件Image-J处理雨滴直径。研究结果表明：该区天然降雨雨滴大小分布符合Best函数式；雨滴中数直径、降雨动能与降雨强度呈幂函数关系，但关系式中的系数由于雨型的不同和观测范围的限制而存在一定差异。
- Abstract:
- The natural rainfall raindrop characteristic is one of soil erosion power factors, and is the basic study of the rainfall agents of erosion rule. The process of natural rainfall was recorded by siphonic pluviograph, then the natural raindrop was observed with filter-color stain method, and the raindrop diameter was measured by computer software called Image-J. The results indicated that the distribution of natural raindrop size was coincidented with Best’s function in Yangling. The relationship of the median raindrop diameter and the kinetic energy of rain with rainfall intensity can be expressed significantly degree dependence, but the relationship has some difference because of rainfall difference and observation scope limit.
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备注/Memo
收稿日期:2010-5-8;改回日期:2010-7-18。
基金项目:国家自然科学基金资助项目（40871133）；国家重点基础研究发展“973”计划（2007CB407201）
作者简介:吴光艳（1987- ），男，硕士研究生，从事土壤侵蚀研究工作。E-mail：meilidewushan@163.com
通讯作者:吴发启（1957- ），男，陕西黄陵人，教授，博士生导师，主要从事土壤侵蚀与流域管理方面的研究。E-mail：wufaqi@263.net