基于涡度相关通量数据估算水稻光能利用率  

Light use efficiency estimation of rice using eddy covariance flux data

作　　者：费敦悦 郭建茂[1,2] 刘俊伟[1] 王迁[1] 

机构地区：[1]南京信息工程大学应用气象学院,南京210044 [2]南京信息工程大学气象灾害预报预警与评估协同创新中心/江苏省农业气象重点实验室,南京210044

出　　处：《气象科学》2018年第1期76-84,共9页Journal of the Meteorological Sciences

基　　金：江苏省重点研发计划(现代农业)项目(BE2015365);中国气象局预报预测核心业务发展专项(CMAHX20160311);公益性行业(气象)科研专项(GYHY201506018)

摘　　要：使用涡度相关通量数据估算安徽寿县农田水稻拔节至成熟期的光能利用率,并分析光能利用率的日变化和季节变化。研究表明:光能利用率的日动态呈现先降低后升高的单峰U型曲线,即早晚值较高,中午较低;季节变化总体呈现降低趋势。日变化中,光能利用率与温度呈正相关,与吸收的光合有效辐射呈显著负相关;季节变化中,光能利用率与温度呈弱正相关。The light use efficiency was used to estimate eddy covariance flux data of irrigated rice from jointing to mature period in Shouxian, Anhui Province, and the daily and seasonal variation of light use efficiency were also analyzed. The results suggest that the daily variation of light use efficiency first decreases then increases as a single peak U curve, which is higher at dawn and in the evening, lower at noon. Light use efficiency decreases with seasonal change. In daily variation, light use efficiency is posi- tively correlated with temperature, but negatively correlated with absorbed photosynthetic active radiation. In seasonal variation, light use efficiency is positively correlated with temperature.

关 键 词：光能利用率 水稻 涡度相关 

分 类 号：S161.1[农业科学—农业气象学]