灌溉排水学报2018，Vol.37Issue(3)：103-109,7.DOI:10.13522/j.cnki.ggps.2017.0271
山东省参照作物腾发量时空变异分布特征
Temporal and Spatial Distribution Characteristics of Reference Crop Evapotranspiration in Shandong Province
摘要
Abstract
[Objective]Analyze the temporal and spatial characteristics and influencing factors of ET0 in Shan-dong Province.[Method]Daily climatic data in 24 meteorological stations were used to calculate ET0 by FAO-56 Penman-Monteith equation. In addition, statistical analysis and inverse distance weighted interpolation of ArcGIS were applied to quantitative analysis and qualitative analysis of the spatial-temporal characteristics of ET0.[Re-sult]Over 1961—2011, the average ET0 was 1161 mm in Shandong province, which showed a decreasing trend and the distribution difference was mainly influenced by aerodynamic factors. Within the year, ET0 was concen-trated, with the largest ET0 in May and June, accounting for 27％of the whole year. ET0 was significantly affected by temperature and humidity from May to September, yet sunshine hours and wind speed were the main influenc-ing factors from October to April. In space, ET0 decreased from northwest to southeast. In northeast land, ET0 was mainly affected by temperature and sunshine time, while mainly affected by the humidity, wind speed along the southeast coast. In space, there was significantly negative correlation between ET0 and humidity. The average rela-tive error of ET0 estimated by humidity was 2％.[Conclusion]By analyzing spatial characteristics of ET0, the main control factor was determined by the humidity.关键词
参照作物腾发量/山东省/时空分布/相关分析/反距离权重Key words
reference crop evapotranspiration/Shandong Province/temporal and spatial distribution/correlation analysis/inverse distance weighted分类
农业科技引用本文复制引用
谭秀翠,王刚,刁艳芳,董洁..山东省参照作物腾发量时空变异分布特征[J].灌溉排水学报,2018,37(3):103-109,7.基金项目
高等学校博士学科点专项科研基金项目(20133702120016) （20133702120016）
