摘要
选择黄土高原具有代表性、雨量站网较密的岔巴沟流域日雨量资料,分析日降雨的空间分布特征.在相关域 的基础上,进一步借用正六边形空间结构估算单站所代表的面积.结果表明,在0.8和0.7的相关水平上,黄土高原日降 雨的相关域分别为9和19km;按照正六边形空间结构估算,在0.8和0.7的相关水平上,单站所代表的面积分别为70 和310km2.为准确预报土壤流失量提供了依据.
Daily rainfall data is one of the important material in calculating rainfall erosivity. To select optimum daily rainfall stations to reflect the rainfall characteristic in the Loess Plateau regions, the daily rainfall data about Chabagou watershed was analyzed. The relationship between daily rainfall correlation coefficient and distance between rain gauge stations was concluded. At the same time, hexagon structure was borrowed to discuss the area that one station can represent. It showed that when correlation coefficients were r= 0.8 and r=0.7, the longest distance between rain gauge stations should be no more than 9 and 19 km respectively.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期89-91,共3页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(40171059)
教育部重点科技计划资助项目
关键词
黄土高原
相关域
日降雨
空间分布
Loess Plateau region
daily rainfall data
spatial distribution
