本数据集为2001-2010年黄土丘陵沟壑区第一副区桥沟流域不同地貌类型径流场数据。桥沟流域位于陕西省榆林市绥德县，属于裴家茂沟（无定河一级支流）的一级支流。对桥沟流域不同地貌类型径流场产生径流的次降水量、径流量、泥沙量进行观测。数据包括桥沟不同地貌类型径流场逐次径流泥沙测验成果表、土壤含水率实测成果表，径流场情况见《桥沟不同地貌类型径流场2001-2010年情况说明》。
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", "ds_process_way": "1.雨量观测：桥沟不同地貌类型径流小区降水量采用桥沟5号雨量站的资料。 2.泥沙取样及处理：径流、泥沙采用不同的观测设施，有三角槽、分水箱、径流池，三角槽在产流过程中采集沙洋；分水箱、径流池在降水结束、径流终止后立即读取径流池水位，根据分水箱、径流池面积、水位计算径流量；将分水箱、径流池泥水搅拌均匀取泥沙样，样品处置采用置换法。 3.土壤含水率：在具有代表性的固定地点，去除表层杂草后，在30 cm深度取样，用烘干（称重）法测定。
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