年径流频率分析的一次二阶矩法及其应用

针对流量资料极短时传统年径流频率分析方法——适线法不再适用的问题,分析了基于水文过程,由影响径流形成的因子推求年径流频率的一次二阶矩法的可行性,并讨论其在无流量资料流域应用中所存在的问题与解决方法。以江西省20个流域为研究对象,采用无参数Schreiber方程与单参数Fu-Zhang方程的水量平衡式作为年降雨—径流模型,结果表明：（1）一次二阶矩法的分析结果与实测年径流的经验频率较为吻合;（2）无流量资料流域中,忽略土壤含水量年间变化的作用,Fu-Zhang模型的分析结果比Schreiber模型好;（3）无流量资料流域中,FuZhang模型中的参数ω可采用反距离权重法估计。...

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Bibliographic Details
Published in水科学进展 Vol. 28; no. 3; pp. 390 - 397
Main Author 熊立华 邝韵琪 于坤霞 温天福
Format Journal Article
LanguageChinese
Published 江西省水利科学研究院,江西南昌 330029 2017
武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072%西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安,710048%武汉大学水资源与水电工程科学国家重点实验室,湖北武汉 430072
Subjects
一次二阶矩法
年径流频率
无流量资料流域
annual runoff frequency
derived moment approach
无流量资料流域
年径流频率
一次二阶矩法
ungauged basin
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ISSN1001-6791
DOI10.14042/j.cnki.32.1309.2017.03.009

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Summary:针对流量资料极短时传统年径流频率分析方法——适线法不再适用的问题,分析了基于水文过程,由影响径流形成的因子推求年径流频率的一次二阶矩法的可行性,并讨论其在无流量资料流域应用中所存在的问题与解决方法。以江西省20个流域为研究对象,采用无参数Schreiber方程与单参数Fu-Zhang方程的水量平衡式作为年降雨—径流模型,结果表明：（1）一次二阶矩法的分析结果与实测年径流的经验频率较为吻合;（2）无流量资料流域中,忽略土壤含水量年间变化的作用,Fu-Zhang模型的分析结果比Schreiber模型好;（3）无流量资料流域中,FuZhang模型中的参数ω可采用反距离权重法估计。
Bibliography:annual runoff frequency; derived moment approach; ungauged basin
The current work confirms that the derived moment approach is a suitable replacement for the curve fitting method when runoff data are not readily available. Specifically, annual runoff frequency was estimated using climate variables associated with hydrological processes. The difficulties involved in assessing the annual runoff frequency in the ungauged basins and the solutions to these problems are discussed. Here, 20 basins in Jiangxi Province were ex- amined using the two annual rainfall--runoff models established based on the Schreiber equation and Fu-Zhang equa- tion. Three relevant conclusions were drawn. First, the frequency distributions of annual runoff estimated using the de- rived moment approach fit the empirically observed frequency of the annual runoff perfectly. Second, the Fu-Zhang model was found to perform better than the Schreiber model when the basins＇ interannual changes in soil moisture con- tent were not known. Finally, th
ISSN:1001-6791
DOI:10.14042/j.cnki.32.1309.2017.03.009