摘要
通过城郊对比分析法,应用1959-2007年气候统计指标值表征西安城区的干岛效应,引入突变分析法及历年西安城区的人口数,对近49a西安城区干岛效应历年、季节变化特征及原因进行了分析。结果表明:西安干岛效应年变化趋势呈二次曲线下垂型,最大降湿达-9%,存在1992年突变年;西安干岛效应季节变化,春季最强,冬季次之,夏、秋季最弱;西安城区干岛效应与人口数量之间有较强的线性关系,春季的城市发展影响干岛效应最大。本研究结果可增加西安城市气候变化规律内容,直接应用于城市的规划、管理中。
Through comparative analysis of suburb areas using statistical indicators of climate from 1959-2007,the dry island effect was characterized in urban Xi＇an.With the introduction of mutation analysis and population of urban Xi＇an over the years,we analyzed characteristics of seasonal variations and causes of the dry island effect in urban Xi＇an of nearly 49 years.The results summarized as follows： years of Xi＇an dry island effect showed a quadratic trend of sagging type,the lowest humidity down to-9%,mutations existed in 1992;the intensity of dry island effect of urban Xi＇an varied with seasons,the strongest in spring,the second in winter,summer,autumn were the weakest.Xi＇an dry island effect showed a strong linear relationship with population and the urban development in spring had the biggest impact on the dry island effect.The research results can enrich the content of the regularity of Xi＇an urban climate change,which can be applied to the urban planning and management directly.
出处
《水土保持研究》
CSCD
北大核心
2011年第5期197-200,共4页
Research of Soil and Water Conservation
基金
国家重大基础预研项目(2005CCA05300)
关键词
干岛效应
城市发展
西安市
dry island effect
urban development
urban Xi＇an
