[1]曹言,王杰,柴素盈,等.昆明市区地表径流影响因子分析[J].水土保持研究,2019,26(02):139-144,152.
　CAO Yan,WANG Jie,CHAI Suying,et al.Analysis on the Influence Factors on Surface Runoff in the Urban Area of Kunming City[J].Research of Soil and Water Conservation,2019,26(02):139-144,152.
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昆明市区地表径流影响因子分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年02期 页码: 139-144,152 栏目: 出版日期: 2019-04-28
Title:
Analysis on the Influence Factors on Surface Runoff in the Urban Area of Kunming City
作者:
曹言1, 王杰1, 柴素盈2, 戚娜1
1. 云南省水利水电科学研究院, 昆明 650228;
2. 云南省环境科学研究院, 昆明 650034
Author(s):
CAO Yan1, WANG Jie1, CHAI Suying2, QI Na1
1. Yunnan Institute of Water Resources and Hydropower Research, Kunming 650228, China;
2. Yunnan Institute of Environmental Science, Kunming 650034, China
关键词:
SCS模型; 降雨; 地表径流; 土壤湿度; 土地利用
Keywords:
SCS model; rainfall; surface runoff; soil humidity; land use
分类号:
P333.1;P343.9
摘要:
为探索SCS模型在昆明坝区地表径流模拟中的适用性和影响因子，利用1986年、1995年、2000年、2007年、2014年昆明市区土地利用类型数据和5个气象站点的逐日降雨数据，通过修正后的SCS模型分析了昆明市区地表径流的影响因子。结果表明：（1）模拟的地表径流深度随着降雨量的增加呈极显著线性增加，且表现出丰水年 > 偏丰水年 > 平水年 > 偏枯水年的趋势，地表径流量最大值出现在降雨最多月份（6月或7月），月平均雨水产流次数达到20次，最小值则出现降雨较少月份（1月或12月）。（2）降雨强度在不同等级之间变化时，地表径流深度变化幅度差异较大，且随着降雨强度增大，地表径流系数呈现快速增长的趋势。单次降雨和单位毫米径流深度均表现前期土壤湿度越高，雨水产流能力则越强的趋势。（3）地表径流量随着渗透比例的减小整体呈现上升趋势，且丰水年土地利用变化对年地表径流的影响明显大于平水年和偏枯水年。
Abstract:
In order to explore the applicability and influence factors of surface runoff base on SCS model in Kunming dam area, based on land use data and daily rainfall data of 5 meteorological stations in Kunming City in 1986, 1995, 2000, 2007 and 2014, the influence factors on surface runoff were analyzed by modified SCS model in the urban area of Kunming City. The simulated results showed that the modeled runoff depth significantly linearly increased with the increase of rainfall, the runoff depth decreased in the order: high flow year > partial high flow year > normal flow year > Low flow year, the maximum rainfall runoff occurred in the month with most rainfall (June or July), the average monthly rainfall reached up to 20 events, the daily average runoff was 3.41 million m3, the minimum rainfall runoff occurred in the month with Less rainfall (January or December). There were distinct variations in runoff depth when rainfall intensity varied between different rainfalls, the coefficient of surface runoff rapidly increased with the increase of rainfall intensity. In terms of single rainfall and unit millimeter rainfall, the surface runoff increased with the increase soil moisture. Surface runoff increased with decrease of proportion of permeability area, in term of annual surface runoff, land use change had more significant impact on it in wet years than that on dry years.

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备注/Memo

收稿日期:2018-05-23;改回日期:2018-08-03。
基金项目:水利部公益性行业科研专项经费项目（20140126）；云南省技术创新人才项目（2016HB015）；云南省水利科技项目（201406）；云南省省级水资源费项目（201604）
作者简介:曹言(1987-),男,陕西鄠邑区人,工程师,硕士,主要从事水文水资源及遥感方面工作。E-mail:359851137@qq.com

更新日期/Last Update: 1900-01-01