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由于喀斯特区域表层岩溶带的结构和构造表现为高度的异质性,以及大量缺失定位观测资料,使得该区域目前还没有较为完善的产汇流模型。对特定小流域地表产流输出过程的分析,有利于对流域内部各种水文过程的认识。本研究正是基于这一背景,通过对一完整自然年的地表产流输出进行分析发现,流域地表径流输出主要发生在5~10月份;受雨强和壤中流向地表径流转化过程的影响,5月份的地表径流产流输出为突发衰弱型伴有明显的迟滞效应,其他月份主要为渐进增强衰弱型,迟滞效应较5月份明显减弱;如去除5月份的影响,6~10月份流域地表径流输出量与降雨量呈显著正相关关系(p<0.05,r=0.99);壤中流向地表径流径流转化具有明显的季节性差异;就全年而言,经由卡口站地表径流输出的量占全年降雨总量的23.1%。
Due to the high degree of heterogeneity of the structure and structure of epikarst karst regions in the karst region and the large number of missing observational data, there is not yet a comprehensive model of runoff production in this region. The analysis of the surface runoff output process in a specific catchment is beneficial to the understanding of various hydrological processes within the catchment. Based on this background, this study analyzed the surface runoff output of a complete natural year and found that the runoff output of the runoff occurred mainly from May to October. Under the influence of rainfall intensity and surface runoff conversion, The surface runoff output in May was accompanied by a significant hysteresis effect on sudden weakness. The rest of the month was mainly a gradual increase and weakness. The hysteresis effect obviously weakened compared with that in May. As the impact of May was removed, the surface of the river basin from June to October There was a significant positive correlation between runoff output and rainfall (p <0.05, r = 0.99). There were significant seasonal differences in runoff conversion between runoff and surface runoff in the soil. For the whole year, Accounting for 23.1% of the total rainfall in the whole year.