小麦群体空气动力学特征和水平脉动风速湍流统计特征

中国农业气象

小麦群体空气动力学特征和水平脉动风速湍流统计特征

陈德兴;陶炳炎;崔永丽;

南京气象学院,南京气象学院,南京气象学院中国科学院上海植物生理研究所

出版日期:1988-12-10 发布日期:1988-12-10

RESEARCH OF WHEAT CANOPY AERODYNAMIC FEATURES AND TURBULENT STATISTICAL CHARACTERISTICS

Chen Dexing Tao Binyiaa Chui Yongli (Nanjing institute of meteorology)

Online:1988-12-10 Published:1988-12-10

摘要/Abstract

摘要： 本文利用小麦群体上的风速、温度梯度观测资料,群体冠层的水平脉动风速实测资料,以及小麦群体特征资料,分析了小麦群体的空气动力参数的变化规律,以及水平脉动风速的湍流统计特征。

关键词: NULL

Abstract: Using the wind and air temperature profiles measured above wheat communities and wheat canopy characteristic elements(height of plant and LAI et al.)data,the analysis is made of the wheat canopy aerodynamic features.The results show that d,z0,and u■ depend on canopy characteristics and wind speed.Meanwhile the analysis of turbulent statistics in horizontai wind speed within wheat canopy is conducted.The results suggest that L,i,and σ~3 increase end ǖ decreases with the depth in canopy.Inaddition,the turbulent spectrum at high frequency is approximately in accordance with the“-5/3”power law.

Key words: NULL, NULL

陈德兴;陶炳炎;崔永丽;. 小麦群体空气动力学特征和水平脉动风速湍流统计特征[J]. 中国农业气象.

Chen Dexing Tao Binyiaa Chui Yongli (Nanjing institute of meteorology). RESEARCH OF WHEAT CANOPY AERODYNAMIC FEATURES AND TURBULENT STATISTICAL CHARACTERISTICS[J]. Chinese Journal of Agrometeorology.