摘要
以鄱阳湖最大入湖支流——赣江流域为例,以流域的水量-能量收支为基础,分析流域近50年来水文、气候的变化特征,研究流域尺度上气候变化和人类活动对径流变化影响的相对作用。结果表明:相对于20世纪60年代,其他年代赣江径流的变化主要是由气候变化作用引起的,而人类活动的作用相对较弱。基于蒸发率函数的定量研究结果进一步揭示,不同时期气候变化和人类活动对径流变化的影响相差较大,但气候因素始终起着增大径流的作用,人类活动起着不同程度的辅助作用。
The Ganjiang River is the largest inflow branch of Poyang Lake. In this study, the characteristics of hydrological and climate variability of the Ganjiang River Basin over the last 50 years were analyzed, and the effects of climate variability and human activities on water resources variation of the river basin were investigated based on a coupled water and energy budget analysis. The results show that, with the depth of runoff in the 1960s as a reference value, the variations of depth of runoff in the Ganjiang River in other periods were mainly caused by climate variability, while the effect of human activities was relatively small. The quantitative analysis based on the evaporation rate function further reveals that there is a large difference between the effects of climate variability and human activities on runoff variations in different periods, and climate variability always leads to an increase of runoff, while human activities play a complementary role at different levels.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第3期196-203,共8页
Journal of Hohai University(Natural Sciences)
基金
国家重点基础研究发展计划(973计划)(2012CB417003)
中国科学院湖泊与环境国家重点实验室开放基金(2010SKL014)
国家自然科学基金(41201026)
西南大学博士基金(SWU110055)
关键词
气候变化
趋势分析
水热收支
蒸发率函数
赣江流域
climate variability
trend analysis
water and energy budget
evaporation rate function
Ganjiang River Basin
