| 纸坊沟小流域水文特征与降水量关系初步分析 |
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| 引用本文： | 段义字,吕惠明. 纸坊沟小流域水文特征与降水量关系初步分析[J]. 水土保持学报, 2011, 25(5): 257-260 |
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| 作者姓名： | 段义字 吕惠明 |
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| 作者单位： | 1. 平凉市水土保持科学研究所,甘肃平凉,744000
2. 中国科学院水利部水土保持研究所,陕西杨凌,712100 |
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| 基金项目： | 甘肃省水利重点科研项目“平凉市纸坊沟流域水沙特性及水土流失特点研究” |
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| 摘 要： | 应用纸坊沟小流域1959-1997年降水、输沙及径流观测资料,分析了流域降水和输沙年际、月际变化特征以及年降水量与年径流量、年均土壤侵蚀模数之间的关系,时段治理程度与时段年均输沙量之间的关系。结果表明,降水量年内分配不均且凸显单一峰值,降水在年际上呈平水年-干旱年-平水年（较丰水年）周期性变化;多年平均输沙量月分布过程线峰型单一瘦削,土壤侵蚀及输沙量年际变幅大,稳定性极差;径流年变化幅度很大,地表径流的年际变化11年为一个周期,连续出现枯水年和丰水年的周期均为6年左右;年降水量与年径流量、年降水量与年土壤侵蚀模数、时段年均输沙量与时段治理程度呈线性相关关系,其相关程度均呈极显著（在0.01水平上）。
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| 关 键 词： | 纸坊沟流域 水文特征 降水量 |
Preliminary Analysis on Relationships Between Hydrological Characteristics and Precipitation of the Zhifanggou Small Watershed |
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| DUAN Yi-zi,LV Hui-ming. Preliminary Analysis on Relationships Between Hydrological Characteristics and Precipitation of the Zhifanggou Small Watershed[J]. Journal of Soil and Water Conservation, 2011, 25(5): 257-260 |
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| Authors: | DUAN Yi-zi LV Hui-ming |
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| Affiliation: | DUAN Yi-zi1,LV Hui-ming2(1.Research Institute of Soil and Water Conservation of Pingliang City,Pingliang,Gansu 744000,2.Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources,Yangling,Shaanxi 712100) |
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| Abstract: | On the basis of the observed data of precipitation,sediment and runoff during1959-1997 years in the Zhifanggou watershed,this paper analysed the relationships between precipitation and change characteristics of inter-annual sediment,and monthly variations,and between the annual precipitation and annual runoff,average annual soil erosion modulus,degree of control in a period and average annual sediment delivering in the same period as well.The results showed that the rainfall distributed uneven during the ye... |
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| Keywords: | Zhifanggou watershed hydrological characteristics precipitation |
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