生态环境学报Issue(9)：1528-1533,6.
淮河中上游参考作物腾发量趋势变化及其成因
Trends in reference evapotranspiration and the main causes during 1959-2009 in Upper and Middle Huaihe River Basin, China
摘要
Abstract
Reference evapotranspiration (ET0) is driven by mean temperature (Tm), actual vapor pressure (ea), wind speed (u2) and net radiation (Rn). The understanding of impacts on climate changes can be obtained by analyzing on changes of ET0 trend and these meteorological variables. In this study, spatial and temporal changes of ET0 and major meteorological variables during 1959-2009 in Upper and Middle Huaihe River Basin were characterized by using Mann-Kendell (MK) test. The partial correlation analysis was used to find the correlation between the ET0 and major meteorological variables. An attribution analysis was used to calculate the contributions of input variables to ET0. The results showed that most stations for annual ET0 had significant decreasing trends at 90%confidence level. In seasonal scale, ET0 in all stations especially in northwestern part showed significant decreasing trends in summer. Significant decreasing ET0 trends were always detected in northwestern part in other three seasons. The regional annual and summer ET0 were in decreasing trends after 1970 and become significant after 1975. From the partial correlation analysis, ea played negative dominating role for ET0 while Tm, Rn and u2 had high positive influence for ET0. Although mean temperature was dominated by significant increasing trends in annual and seasonal scale and gave positive influence to ET0, decreasing annual and summer wind speed and sunshine duration led to the decreasing of annual and summer ET0.关键词
ET0/趋势分析/淮河流域/气候变化Key words
reference evapotranspiration/trends analysis/the Huaihe River Basin/climate change分类
农业科技引用本文复制引用
郝振纯,安贵阳,王加虎,鞠琴,李永坤..淮河中上游参考作物腾发量趋势变化及其成因[J].生态环境学报,2013,(9):1528-1533,6.基金项目
国家重点基础研究发展计划项目（2010CB951101）；国家自然科学基金项目（41371047，41101015，41101016，41271042）；中国科学院战略性先导科技专项项目-应对气候变化的碳收支认证及相关问题 （）
