摘要
利用水文气象等环境资料,分析近50年来河北省干旱化特点及发展趋势。结果表明,该省气温显著升高,降水持续减少,湖淀干涸,湿地严重萎缩,河道断流,入海水量急剧减少,地下水环境由丰水区变成了特大超采区,草场面积减少,土地沙化面积扩大,区域环境干旱化形势非常严峻。气候变化和超负荷的水资源开发利用可能是河北地区干旱化的两个主要原因。
The feature and trend of the aridification in Hebei Province in the last 50 years was analyzed using hydrographic and meteorological data and so on. The results indicate that aridification of the regional environment has some features. The Local temperature has risen remarkably, rainfall has reduced continuously, some lakes and rivers have been dry, under ground water has been excessively exploited, and wetland and grassland have been shrunken while desertified land has been expanded. And then the driving factors of the aridification were discussed. Human being＇s activities, the atmospheric circulation, sea surface temperature and exceptional plateau firn were studied. Human being＇s activities have changed the components of atmosphere and the characters of land use and water resources were found to be important driving factors after having assessed the contribution to the aridification in Hebei Province. The further study shows that climate change and excessively water resources exploiting are the two major effect factors on the aridification in Hebei Province.
出处
《气候与环境研究》
CSCD
北大核心
2008年第3期309-317,共9页
Climatic and Environmental Research
基金
河北省科学院计划项目02111
关键词
河北省
干旱化
人类活动
气候变化
Hebei Province, aridification, human being＇s activities, climate change
