1954-2018年南小河沟流域董庄沟控制站径流泥沙观测数据集

A dataset of runoff and sediment observation in Dongzhuanggou control station of Nanxiaohegou watershed from 1954 to 2018

董庄沟流域作为黄土高塬沟壑区南小河沟流域水土流失及水土保持研究的非治理对比观测沟,在1954–2018年期间开展了降水、径流、泥沙的长期观测。其中降水量数据时段序列为1954–1958年,1964–1965年,2004–2018年;径流和泥沙数据为1954–1965年,2005–2018年,部分数据因观测中断存在时间序列不连续。降水数据可用于分析区域降雨时空分布、以及雨强、雨型和频次随时间的变化。径流和泥沙数据集为逐次降雨洪水对应的观测数据,可为产流产沙建模提供数据资源和验证条件。这些长时间系列数据对于微观和宏观的自然条件下的水土流失规律和水土保持措施效益研究意义重大。同时为开展水土流失自然灾害(泥石流、滑坡、红土泻溜)预报研究提供基础数据支撑。

Gongzhuanggou watershed is a non-controlled comparative observation ditch for the study on soil and water conservation of Nanxiaohegou watershed in the gully region of the Loess Plateau.Researches carried out long-term observation of precipitation,runoff and sediment during 1954-2018.The time series of precipitation data are 1954–1958,1964–1965 and 2004–2018.The time series of runoff and sediment data are 1954-1965 and 2005-2018.Due to observation interruption,some time series are not continuous.The precipitation data can be used to analyze the spatial and temporal distribution of regional rainfall,as well as the changes of rainfall intensity,pattern and frequency over time.The runoff and sediment dataset is composed of the observation data corresponding to successive rainfall and flood,which can provide data resources and verification conditions for the modeling of runoff and sediment yield.These data of long-time series are of great significance to the study on the law of soil and water loss and the benefits of soil and water conservation measures under micro and macro natural conditions.At the same time,the dataset can provide basic data support for the prediction of natural disasters of soil erosion(debris flow,landslide and red soil erosion).