麦田能量平衡及潜热分配特征分析

Energy balance and latent beat flux partition in wheat field.

用波文比-能量平衡法(BREB)分析了冬小麦返青后麦田能量平衡和潜热分配的变化特征及影响因素。在平衡过程中,土壤含水量和叶面积指数(LAI)是决定能量分配的关键因素。并分析了返青后土壤蒸发随叶面积指数变化的规律。

Based on the Bowen Ratio-Energy Balance Method (BREB),this paper analyzes the variational characteristic of the energy balance components and the latent energy partition in the winter wheat field after the wheat regreen. The soil moisture content and leaf area index (LAI) are the critical factors in energy partition process. Besides,the variation of evaporation from soil as related to leaf area index has also been calculated and analyzed.