人类活动干扰下丰满Ⅱ区流域水文干旱演变特征分析
Analysis of Hydrological Drought Evolution Under Human Activities in Fengman Sub-basin Ⅱ
投稿时间:2020-07-01  修订日期:2020-07-02
DOI:
中文关键词:  丰满Ⅱ区流域  水文干旱  SWAT模型  人类活动影响  定量分析
英文关键词:Fengman sub-basin Ⅱ  hydrological drought  SWAT model  human activities  quantitative analysis
基金项目:国家重点研发计划(2017YFC0406001),国家自然科学基金青年基金(51709036)
作者单位邮编
陈亚男 大连理工大学 水利工程学院 116024
丁伟 大连理工大学 水利工程学院 116024
王猛 大连市水务集团有限公司 
初京刚 大连理工大学 水利工程学院 
刘启宁 大连理工大学 水利工程学院 
摘要点击次数: 212
全文下载次数: 0
中文摘要:
      干旱灾害多与水文干旱相关,人类通过改变土地利用类型、建设水利工程等方式影响了水循环,改变了水文干旱规律,因此研究人类活动影响下的水文干旱特征对旱灾防治与水资源管理有重要意义。基于游程理论识别丰满Ⅱ区流域水文干旱事件,分析干旱频率、烈度、历时特征及其演化规律,并采用SWAT模型量化气候变化与人类活动对水文干旱特征变化的贡献。结果表明:人类活动对丰满Ⅱ区流域1976-2016的径流水文干旱严重化起主要贡献,人类活动使此时期水文干旱频率由0.30增加至0.41,主要增加了春秋季的水文干旱频率,平均烈度增大了65%,干旱平均历时延长了22%,同时促进了超长期水文干旱的发生。流域内大量水库、塘坝的季节性拦蓄径流行为是造成流域出口断面处径流大幅减小,水文干旱发生频率增加、历时与烈度增大的主要原因。
英文摘要:
      Drought disasters are closely associated to hydrological droughts. Human activities have altered water cycles via changing land cover or constructing water projects, and thus studying the impact of human activities on hydrological drought characteristics is essential to drought prevention and water resources management. The frequency, duration and deficit volume of hydrological drought events in Fengman sub-basin II were analyzed based on Run Theory. And SWAT model was established to evaluate the effects of climate change and human activities on hydrological drought characteristics. The results showed that the increasing severity of hydrological drought during the period of 1976-2016 in the Fengman sub-basin II was mainly due to human activities, which increased the frequency of hydrological drought from 0.30 to 0.41, especially the drought frequency in Spring and Autumn, and increased the average deficit volume and duration of drought events by 65% and 22%, respectively. Moreover, the occurrence of ultra-long-term hydrological drought also increased. The impoundment of reservoirs and ponds within the basin is the main reason for the significant decrease in runoff at the outlet, as well as the increase in the frequency, duration and deficit volume of streamflow drought.
  查看/发表评论  下载PDF阅读器