新安江上游流域雨量站网密度分析

Density Analysis of Precipitation Station Network in the Upper Xin’anjiang River Basin

本文选取新安江上游流域为研究对象,利用现有已布设的雨量站点实测资料,对山区雨量站网密度进行了研究分析。采用随机抽站法深入分析影响面雨量精度的因素,如站网分布均匀度、抽取站点数目、计算方法等;同时分子流域使用人工抽站法分析合理的雨量站网密度,建立了站网密度与流域平均高程、站网密度与流域面积等地理特征的相关关系,可为山区雨量站网布设提供参考依据。

This paper selects the upper Xin’anjiang River Basin as the research object and uses the existing measured data from precipitation stations to study and analyze the density of the precipitation station network in mountainous areas.The random station extraction method is used to deeply analyze the factors affecting the accuracy of areal rainfall,such as the uniformity of station network distribution,the number of extracted stations,and the calculation method,etc.Additionally,the manual station extraction method is used to analyze the reasonable density of the precipitation network in sub-basins,establishing correlations between station network density and geographic characteristics such as the average elevation of the basin and the basin area.This can provide a reference for the layout of precipitation station networks in mountainous areas.