灌溉排水学报2012，Vol.31Issue(6)：126-128,3.
广西多站点参考作物蒸散量时空变化分析
Temporal and Spatial Variability of Reference Crop Evaporation in Guangxi Province
摘要
Abstract
Based on the measured data during 1957-2001 at 20 metrological observation stations in Guangxi Province, monthly reference crop evaporation (ET0) was calculated by Penman-Monteith formula. The inter-annual change characteristics of ET0 were analyzed using the coefficient of variation and extremum ratio. Also cumulative filter method, Kendall test method and R/S test method were used to investigate the change of ET0. The results showed that the annual ET0 was subject to dramatic change in Central Guangxi, and the minimal change existed in Southern Guangxi. The annual change of ET0 in the karst area was a little drastic than that in no-karst area. 5 percent ET0 of 20 metrological observation stations showed an increase trend, and 95 percent of that showed a decrease trend; furthermore, 63.1 percent ET0 displayed an obvious increase trend. Compared with the change trend in period of 1957-2001, the sites of ET0 increase trend raised from 5 percent up to 35 percent in the next period, and in the karst area there were more sites in which ET0 increased than in on-karst area.关键词
参考作物蒸散量/变化特征/变化趋势/Penman-Monteith公式Key words
ET0/change characteristic/variation trend/Penman-Monteith formula分类
天文与地球科学引用本文复制引用
关保多,代俊峰,杜君,韩培丽..广西多站点参考作物蒸散量时空变化分析[J].灌溉排水学报,2012,31(6):126-128,3.基金项目
基金项目：国家自然科学基金项目 （）
水资源与水电工程科学国家重点实验室开放基金 （）
