东江流域面雨量计算方法简析

Analysis the Method of Area Rainfall Calculation for East River Basin

为充分发挥水资源的作用,针对东江流域水资源存在的问题,分析比较现有的4种面雨量计算方法,即算术平均法、等雨量线法、泰森多边形法、网格法对计算东江流域面雨量值的精确度的影响。结果表明算术平均法精度较差,其余三种方法计算结果很接近,可实际应用。

For the purpose of developing the function of water resources and focusing on the problem of it in east river basin,there are four methods to the area rainfall calculation： arithmetic average,isohyet,Thiessen polygon and grid,which had gave the influence to the precision of it.The result is without the method of arithmetic average,the others are very similar in calculation results,and could be applied in actual.