| 农田林网化地区近地面层廓线特征研究 |
| |
| 引用本文： | 王述礼,朱廷曜.农田林网化地区近地面层廓线特征研究[J].应用生态学报,1994,5(2):133-137. |
| |
| 作者姓名： | 王述礼 朱廷曜 |
| |
| 作者单位： | 中国科学院沈阳应用生态研究所 |
| |
| 摘 要： | 大面积林网化地区近地面层大气的系留气球观测发现，近地面层大气的风、温、湿分为两层，即下边界层和扰动边界层，其厚度和廓线分布与理查逊数有关，在中性天气条件下均满足对数分布规律，边界层（特别是扰动边界层）内的摩擦速度Ｕ．＂与旷野对比点的摩擦速度Ｕ０增大１个数量级，而粗糙度Ｚ＂０增大２个数量级，甚至更大。
|
| 关 键 词： | 边界层，摩擦速度，粗糙度，廓线分布，理查逊数 |
Profile characteristics or near-surface layer in farmland windbreak network region |
| |
| ang Shuli,Zhu Tingyao and Guan Dexin.Profile characteristics or near-surface layer in farmland windbreak network region[J].Chinese Journal of Applied Ecology,1994,5(2):133-137. |
| |
| Authors: | ang Shuli Zhu Tingyao and Guan Dexin |
| |
| Abstract: | Observations of wind speed, temperature and humidity over large windbreak network are.with tethered ballon found that near-surface layer can be divided into two layers, lower boundary layer and turbulent boundary layer. Their thicknesses and profile distribution are related to Richardson number (Ri). All profiles under neutral stratification are satisfied with logarithmic law.In these layers, especially in turbulent boundary layer,the friction velocities U." are increased by one order of magnitude than that in open land,and the roughnesses Z"0 by two ones or more. |
| |
| Keywords: | Boundary layer Friction velocity Roughness Profile distribution Richardson number |
| 本文献已被 CNKI 维普 等数据库收录！ |
