摘要
以黑河上游天涝池流域(12.8 km^2)为研究区,对2016-2017年生长季(4-9月)河川径流量及其主控因子(气象因子)进行观测,获得河川径流量和气象因子的动态变化,采用相关性分析和回归分析对观测数据进行处理,建立了径流量与气象因子之间的关系.结果表明,生长季日均径流量为2.93×10~4m^3,月均径流量为7.39×10~5m^3,月径流量最小值出现在4月(8.90×10~4m^3/月),随时间增加而增加,在8月达到最大值(1.33×10~6m^3/月),之后降低.生长季月径流量与月均温、月降水量均为极显著正相关,相关系数分别达到0.96、0.74.径流量与气象因子的变化趋势基本一致,且径流量对降水有较明显的滞后效应.
The Tianlaochi catchment with an area of 12.8 km^2 in the upper reaches of the Heihe River was selected as our study object.The river runoff and its dominant factors(i.e.,meteorological factors)in growth seasons were observed from 2016 to 2017 and the dynamic changes of river runoff and meteorological factors obtained.In order to reveal the relationships between river runoff and meteorological factors,the methods of correlation analysis and regression analysis were used and the results showed that themean daily runoff was 2.93×10~4 m^3,the average monthly runoff was 7.39×10~5 m^3,and the minimum monthly runoff occurred in April(8.90×10~4 m^3/month);it increased with time increase,reached the maximum in August(1.33×10~6 m^3/month)and then decreased.In the growing season,there was a significant positive correlation between the monthly runoff and monthly average temperature with the correlation coefficient being 0.96;there also existed a significant positive correlation between the river runoff and precipitation with the correlation coefficient being 0.74.The variation trends of river runoff and meteorological factors were consistent during the observed period,and the runoff changes had obvious hysteretic effect compared with that of precipitation.
作者
毛亚花
赵传燕
王方圆
黄晖云
席亚丽
魏生龙
Mao Ya-hua;Zhao Chuan-yan;Wang Fang-yuan;Huang Hui-yun;Xi Ya-li;Wei Sheng-long(State Key Laboratory of Grassland Agro-ecosystems,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China;Zhangye Forestry Bureau,Sidalong Station,Zhangye 734000,Gansu,China;Gansu Engineering Laboratory of Applied Myclogy,Hexi University,Zhangye 734000,Gansu,China)
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第4期520-524,532,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金面上项目(41571051)
关键词
河川径流量
降水
气温
滞后效应
river runoff
precipitation
air temperature
hysteretic effect
