Current Situation and Evolution of Drought and Flood in Fen-wei Plain

• 作者: Lei Tianjiao Lei Xiangjie Li Hongmei Li Hualong Wang Juan Zhang Guohong
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 渭河平原 干旱风险 洪水频率 汾渭 演变 降水量 自然灾害 预警能力
• 年，卷（期）: 2015,（1）
• 页码范围: 31-36
• 页数: 6页
• 分类号: P315.5

摘要

Based on the latest results and data of drought and flood in Fen-wei Plain,current situation and evolution of drought and flood in Fen-wei Plain were analyzed.The results show that in Fen-wei Plain drought and flood are natural disasters bringing about the most serious damage,and drought risk in east central Weihe Plain is serious.In Fen-wei Plain,precipitation tended to decrease,and temperature,drought days and intensity increased over the past 50 years.There were obvious differences between two decades in drought and flood.Drought was the severest in the 1990 s,and flood was the most serious in Fenhe Plain in the 1960 sand in Weihe Plain from the late 1970 sto the early 1980 s.Over the past ten years,precipitation and flood frequency increased,and temperature,drought days and intensity decreased.In Fen-wei Plain,temperature will rise and precipitation will increase slightly in next 20-40 years.Monitoring and early warning capability of drought and flood in Fen-wei Plain have improved gradually,but some issues need to be paid more attention to and solved.