Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area

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Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area

更新时间：2024-11-07

- Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area
- Issue 5, Pages: 45-47(2003)
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- Published：2003
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Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area[J]. 2003, (5): 45-47.
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Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area[J]. 2003, (5): 45-47. DOI：

摘要

降雨是影响低丘红壤坡地土壤侵蚀和养分随径流迁移的一个关键因子.利用三角量水堰自动测量径流量和自动雨量计观测数据

分析了鹰潭小流域的季节性降雨径流特征.小流域降雨主要发生在4～6月

总量达512.4 mm

占观测时段总雨量的70.1%

而旱季7～9月仅为218.9 mm.上游、下游围堰累积径流量随旱季、雨季的变化表明:小流域降雨-径流- 土壤水界面水分转化可分为土壤水补给阶段(4月14日～6月14日)、土壤水饱和阶段(6月15 日～7月28日)和土壤水消耗阶段(7月28日以后).雨季径流量对降雨的响应波动超过旱季 .日累积降雨量与日累积径流量有极显著的正相关关系.径流小区水样分析结果说明观测期下坡径流小区总氮(TN)、总磷 (TP)浓度高于上坡.

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Seasonal Rainfall-Runoff Characteristics at Small Catchment of Yingtan Area

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