摘要
选取6个代表站点,采用人工观测数据和自动站监测数据进行相关性分析、箱式图分析、对比差值计算以及对比差值的标准差、相对误差计算,结果表明:各站点误差较大的层次多出现在表层,代表站点中只有浦江一个站点的相对误差≤10%。目前,土壤湿度自动站只能反映土壤水分趋势变化情况。接着,进一步分析土壤湿度自动站数据不准确的原因,并对相关性较好的层次提出订正方法。
Six representative stations were selected to analyze the difference and relation between the data from artificial observation and the data from soil moisture automatic station.Through correlation analysis,box-plot analysis,as well as the comparison of their difference,standard deviation and relative error,the large error of all the stations mostly appeared in the subsurface layer was found.Among all of the six stations,the relative error of Pujiang was less than 10%.At present,soil moisture automatic station could only reflect the variation trend of soil moisture.At last,the reasons of the inaccuracy when using soil moisture automatic station data were analyzed.According to this situation,a method for calibrating the automatic monitoring data where the correlation showed well was proposed.
出处
《安徽农业科学》
CAS
北大核心
2011年第29期18066-18068,18147,共4页
Journal of Anhui Agricultural Sciences
基金
公益性行业科研专项(水利201001053)
川气课题项目(2010-应用-14)
关键词
土壤湿度自动站
土壤湿度
数据分析
对比差值
Soil moisture automatic station
Soil moisture
Data analysis
Comparison difference
