摘要
为解决冬季土壤蒸发影响因子之间存在的多重相关性问题,以哈尔滨地区为例,采用主成分分析法对2008年11月至2009年3月的相对湿度、水汽压、气压、风向、风速、地面温度和气温等7个主要影响因子进行了分析评价。结果表明:哈尔滨地区冬季土壤蒸发量的变化是众多影响因子综合作用下相协调的结果。其中地温、气温、气压和水汽压是主要影响因素,研究结果为哈尔滨地区制定灌溉制度提供了参考依据。
In order to solve the problem of multiple correlation among influence factors of soil evaporation in winter, taking Harbin for example, principal component analysis was adopted to analyze and evaluate these seven main influence factors such as relative humidity, vapor pressure, atmospheric pressure, wind direction, wind speed, ground temperature and air temperature. The result shows that the change of soil evaporation in winter of Harbin is the result of harmonization under the combined effect of many influential factors, and ground temperature, air temperature, vapor pressure and atmospheric pressure are the main factors. The research achievements can provide reference for making irrigation program of Harbin.
出处
《黑龙江水专学报》
2010年第1期93-96,共4页
Journal of Heilongjiang Hydraulic Engineering College
基金
黑龙江省科技攻关项目(GB06B106-7)
关键词
主成分分析
北方寒区
土壤蒸发
影响因子
principal component analysis
northern cold area
soil evaporation
influential factor
