Aridification trend in the Zhangweinan River Basin,North China
North China, the political and cultural center of China, is a region with dense population and developed economics. A series of droughts have occurred in recent decades, including the decrease of precipitation and streamflow, subsidence of groundwater table, and even occurrence of zero flow in rivers. In order to identify the impact of climate change and human activities on the aridification trend in North China, the meteorological and hydrological changes over the past 50 years between the headwater catchment and downstream of the Zhangweinan River basin was compared in this study. Results show that, as a natural process, maximum air temperature has significantly increased, precipitation slightly decreased and runoff significantly decreased over the past 50 years. Human activities have further aggravated these changes, and have greatly influenced all other variables (e.g., mean and minimum air temperature, mean and minimum relative humidity). Available measures to cope with the aridification trend in North China should be taken. Further study will be carried out to integrate modeling of climatic, hydrological systems (including groundwater system) and human activities, so that their interaction can be investigated.
North China arid trend climate change human activity
Xitian CAI Zongxue XU Weidong YU
Key Laboratory of Water and Sediment Sciences,Ministry of Education College of Water Sciences,Beijin Zhangweinan River Administration Bureau,Dezhou 253009,China
国际会议
The Four Conference of Asia Pacific Association of Hydrology and Water Resources(亚太地区水文水资源协会第4届科学大会)
北京
英文
162-166
2008-11-03（万方平台首次上网日期，不代表论文的发表时间）