【作者】 赵莉莉； 刘寿东； 胡凝；

【Author】 ZHAO Li-li et al (Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044)

【机构】 浙江省建德市气象局； 南京信息工程大学；

【摘要】 [目的]验证二维通量积分法估算水稻花粉源强的可行性。[方法]利用2008年南京开花期稻田水稻花粉扩散的源强实验资料,分析花粉在稻田上方的分布规律和影响因素,利用二维通量积分法计算源强大小,分析源强大小的影响因素。[结果]水稻花粉在源内的分布规律不受品种、田块面积的影响,在下风方始终呈现倒"S"型,水稻冠层上方花粉浓度随高度增加而递减。影响花粉分布的主要因素是稻田上方风的分布状况,而花粉数量则受到生物学和气象条件的双重影响。花粉扩散中源强大小仅为开花总量的1.8%,符合实际扩散状况。[结论]二维通量积分法是水稻花粉源强估算简单而有效的方法。更多还原

【Abstract】 [Objective] Study the distribution law of pollen above the field, demonstrate the feasibility of 2-D Flux integration. [Method] Use the date obtained from dispersal experiment, analyze the distribution law and influencing factors,then use 2-D flux integral method to calculate the source strength and analyze the result. [Results] The law of pollen diffusion above the field is unaffected by species and area. It always shows the inversed "S" type on the leeward,pollen concentration above canopy was showed power exponent decreased with the height increasing.Pollen distribution is influenced by the wind above the field, but pollen amount was influenced by the biological factors and meteorological condition. [Conclusion] The 2-D Flux integration is an easy and effective method for estimating the source strength.更多还原