重庆王家沟小流域降水特性统计分析

常宝,张卫华,靳军英,魏朝富

doi:10.13718/j.cnki.xdzk.2015.09.021

西南大学学报（自然科学版）

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重庆王家沟小流域降水特性统计分析

常宝,张卫华,靳军英,魏朝富. 重庆王家沟小流域降水特性统计分析[J]. 西南大学学报（自然科学版）, 2015, 37(9). doi: 10.13718/j.cnki.xdzk.2015.09.021

引用本文:

常宝,张卫华,靳军英,魏朝富. 重庆王家沟小流域降水特性统计分析[J]. 西南大学学报（自然科学版）, 2015, 37(9). doi: 10.13718/j.cnki.xdzk.2015.09.021

CHANG Bao,ZHANG Wei-hua,JIN Jun-ying,WEI Chao-fu. Statistical Analysis of Precipitation in Wangjiagou Cathment of Chongqing[J]. Journal of Southwest University Natural Science Edition, 2015, 37(9). doi: 10.13718/j.cnki.xdzk.2015.09.021

Citation:

CHANG Bao,ZHANG Wei-hua,JIN Jun-ying,WEI Chao-fu. Statistical Analysis of Precipitation in Wangjiagou Cathment of Chongqing[J]. Journal of Southwest University Natural Science Edition, 2015, 37(9). doi: 10.13718/j.cnki.xdzk.2015.09.021

重庆王家沟小流域降水特性统计分析

常宝,张卫华,靳军英,魏朝富

西南大学资源环境学院,重庆,400716

Statistical Analysis of Precipitation in Wangjiagou Cathment of Chongqing

CHANG Bao,ZHANG Wei-hua,JIN Jun-ying,WEI Chao-fu

摘要: 利用M atlab软件分析了涪陵站31a月降水序列，检验了年降水量均值和方差，并对月降水量极值和超过值进行了分析，最后用dfittool对年降水量、月极值、月超过值进行了概率分布拟合。结果表明：对31a降水序列，均值和方差均无显著变化，且没有明显的趋势。年降水量服从对数正态分布，月极值服从广义极值分布，月超过值服从广义帕累托分布。以上结果可以为该流域水资源利用及水文预报、水循环提供科学依据。
- 王家沟小流域 /
- 降水 /
- 统计 /
- 检验 /
- 概率分布
Abstract: The monthly precipitation data of 31 years at Fulin Weather Station was studied with the soft‐ware Matlab ,the mean and variance of annual precipitation were tested ,and its monthly extremes and ex‐ceedances were analyzed .Finally ,by integrating dfittool ,the probability distribution curves were fitted . The results showed that the mean and variance were stable and no clear trend was detected in annual pre‐cipitation data .The probability distribution for annual precipitation followed the log‐normal distribution , monthly extremes followed the generalized extreme value (GEV) distribution and monthly exceedance fol‐lowed the generalized Pareto distribution .The results can provide a scientific background for water re‐source utilization and hydrological forecast in the catchment .
- Wangjiagou catchment，rainfall，statistics，test，probability distribution /

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重庆王家沟小流域降水特性统计分析

常宝,张卫华,靳军英,魏朝富

西南大学资源环境学院,重庆,400716

关键词:

摘要: 利用M atlab软件分析了涪陵站31a月降水序列，检验了年降水量均值和方差，并对月降水量极值和超过值进行了分析，最后用dfittool对年降水量、月极值、月超过值进行了概率分布拟合。结果表明：对31a降水序列，均值和方差均无显著变化，且没有明显的趋势。年降水量服从对数正态分布，月极值服从广义极值分布，月超过值服从广义帕累托分布。以上结果可以为该流域水资源利用及水文预报、水循环提供科学依据。

English Abstract

Statistical Analysis of Precipitation in Wangjiagou Cathment of Chongqing

西南大学资源环境学院,重庆,400716

Keywords:

Abstract: The monthly precipitation data of 31 years at Fulin Weather Station was studied with the soft‐ware Matlab ,the mean and variance of annual precipitation were tested ,and its monthly extremes and ex‐ceedances were analyzed .Finally ,by integrating dfittool ,the probability distribution curves were fitted . The results showed that the mean and variance were stable and no clear trend was detected in annual pre‐cipitation data .The probability distribution for annual precipitation followed the log‐normal distribution , monthly extremes followed the generalized extreme value (GEV) distribution and monthly exceedance fol‐lowed the generalized Pareto distribution .The results can provide a scientific background for water re‐source utilization and hydrological forecast in the catchment .