荆门和桂林灌溉试验站蒸发皿蒸发变化规律及其影响因素的初步分析  

Recent Changes in Pan Evaporation and the Possible Climate Factors in Jingmen Irrigation and Drainage Experiment Station and Guilin Irrigation and Drainage Experiment Station

作　　者：代俊峰[1] 邓欢[1] 杨欣[1] 方荣杰[1] 李新建 

机构地区：[1]桂林理工大学环境科学与工程学院,广西桂林541004 [2]桂林市农田灌溉试验中心站,广西桂林541005

出　　处：《中国农村水利水电》2011年第1期40-45,49,共7页China Rural Water and Hydropower

基　　金：广西科技攻关(0895004-3-1);广西科学基金(0991026);广西环境工程与保护评价重点实验室基金(0701Z006);广西教育厅科研项目(200812LX181);广西高校人才小高地建设"环境工程"创新团队资助计划(桂教人[2007]71号)国家自然基金(51009031)

摘　　要：以湖北荆门灌溉试验站和广西桂林灌溉试验站的蒸发皿蒸发和气象要素实测资料为例,采用线性趋势线法分析蒸发皿蒸发量的变化趋势以及气温、降雨量、风速、日照时数、日较差和相对湿度等6个气象因子的变化趋势,采用单因素相关分析和多元线性回归分析,研究了气象因子对蒸发皿蒸发的影响。分析结果表明,荆门灌溉试验站1973-2003年蒸发皿蒸发呈下降趋势,其主要影响因素是相对湿度的增大、风速的减小和日较差的减小,桂林农田灌溉试验站1980-2003年蒸发皿蒸发呈上升趋势,其主要影响因素是日较差的增大。Based on the measured data during 1973-2003 in Jingmen Irrigation and Drainage Experiment Station and 1980-2003 in Guilin Irrigation and Drainage Experiment Station,the trend of pan evaporation change and influencing climate factors in recent 30 years is analyzed by using the linear tendency linear method;and the relationship between pan evaporation and average air temperature,precipitation,average wind speed,the sunlight time,average relative humidity,and diurnal temperature range are also analyzed by using single factor correlation analysis and multiple regression analysis.It is obvious that the decreasing trend of pan evaporation exists in Jingmen Irrigation and Drainage Experiment Station in recent 31 years,and the influence of average relative humidity,wind speed and diurnal temperature range change are dominant.And it is found that the increase in pan evaporation in Guilin Irrigation and Drainage Experiment Station in recent 24 years is mainly caused by the diurnal temperature range change.

关 键 词：蒸发皿蒸发 气象因素 变化趋势 相关分析 

分 类 号：TV11[水利工程—水文学及水资源]