改进的无作物潜水蒸发经验公式  

On the Development of Improved Empirical Formulas for Calculating the Phreatic Water Evaporation for Bare Land

作　　者：束龙仓[1] 荆艳东[1] 黄修东 余钟波[1,3] 王振龙[4] 

机构地区：[1]水文水资源与水利工程科学国家重点实验室/河海大学,南京210098 [2]青岛水文水资源勘测局,山东青岛266071 [3]内达华大学地球科学系,美国内达华89154 [4]安徽省水利水资源重点实验室,安徽蚌埠233000

出　　处：《吉林大学学报（地球科学版）》2012年第6期1859-1865,共7页Journal of Jilin University：Earth Science Edition

基　　金：教育部长江学者和创新团队发展计划资助项目(IRT0717);高等学校学科创新引智计划项目(B08048)

摘　　要：根据安徽省五道沟水文水资源实验站砂姜黑土和砂壤土2种原状土样1992—1994年的潜水蒸发实验观测数据,在分析无作物条件下潜水蒸发与各种影响因素关系、潜水蒸发系数与水面蒸发关系的基础上,采用非线性最小二乘法,以决定性系数、残差均值和方差为性能指标,对已有的潜水蒸发经验公式——阿维里扬诺夫公式和叶水庭公式进行了非线性回归拟合优度比较,并提出了2个公式的改进形式。结果表明,采用改进后的经验公式进行潜水蒸发的拟合和预测,较原有公式精度有明显提高。The undisturbed concretion black and sandy loam soil samples in the Wudaogou（Anhui Province,China） were selected to study the subsurface evaporation-filtration experimental system of the hydrology and water resources.Based on the observation data of phreatic water evaporation from 1992 to 1994 at this site,the relationships between phreatic water evaporation and influencing factors,and the relationships between the phreatic water evaporation coefficient and water surface evaporation were analyzed for bare lands.Based on the above analyses,the goodness of curve fitting of existed empirical formulas such as Ye Shuiting formula and Aviriyanover formula were tested and analyzed by using a nonlinear least squares algorithm,and the improved empirical formulas were developed.The results show that the fitting and prediction results of the improved formulas are much better than the existed formulas,and there is only one parameter to be determined in the improved formulas.

关 键 词：无作物 潜水蒸发 改进的经验公式 非线性回归 土壤 

分 类 号：P641.132[天文地球—地质矿产勘探]