长白山阔叶红松林的零平面位移和粗糙度

生态学杂志 ›› 2004, Vol. ›› Issue (5): 84-88,115.

长白山阔叶红松林的零平面位移和粗糙度

赵晓松^1,2, 关德新¹, 吴家兵¹, 金昌杰¹, 韩士杰¹

1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;
2. 中国科学院研究生院, 北京, 100039

收稿日期:2004-02-27 修回日期:2004-07-01 出版日期:2004-10-10
通讯作者: 赵晓松,女,1980年出生,在读硕士.研究方向为生态气候学.发表论文数篇.
基金资助:
国家自然科学基金项目(30370293);中国科学院知识创新工程重大资助项目(KZCX1SW0101A1)

Zero-plane displacement and roughness length of the mixed forest of broad-leaved and Korean-pine in Changbai Mountain

ZHAO Xiaosong^1,2, GUAN Dexin¹, WU Jiabing¹, JIN Changjie¹, HAN Shijie¹

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2004-02-27 Revised:2004-07-01 Online:2004-10-10

摘要/Abstract

摘要： 根据长白山阔叶红松林气象观测塔上16个月的风速、温度、湿度及气压的连续观测资料,根据中性层结条件下风速随高度的对数变化规律,利用廓线法中的牛顿迭代法计算了该森林的零平面位移d和粗糙度z₀,结果表明,d和z₀均存在着较明显的季节变化,在生长季d较大,z₀较小,而非生长季恰好相反,标准化的零平面位移d/h和粗糙度z₀/h在生长季和非生长季平均分别为0.867,0.764和4.47×10^-2,3.59×10^-2。与叶面积指数对比分析发现,d/h和z₀/h与叶面积指数分别存在正相关和负相关的关系。敏感性分析表明,牛顿迭代法求d和z₀对风速的精度要求较高,需要精度高的仪器和长期的数据积累。

关键词: 大气CO₂浓度升高, 土壤微生物

Abstract: Based on logarithm law of wind profile under neutral stratification,zero-plane displacement d and roughness length z₀ of the mixed forest of broad-leaved and Korean-pine in Changbai Mountain were calculated with Newton iteration according to the 16 months profile measurements of wind speed,air temperature,humidity and pressure.The results showed that d and z₀ had obvious seasonal variation.In growing season was relatively high and z₀ was lower.Normalized values,d/h and z₀/h,were in the magnitude of 0.867,0.764 and 4.47?10^-2,3.59?10^-2 in growing season and dormant season, respectively. d/h and z₀/h were positively and negatively correlated with leaf area indexes of the forest.Sensitive analysis showed that the iteration approach of calculating d and z₀ demanded high precision measurements of wind speed in the profiles.This work should be based on the long term measurements with high-precision instruments.

Key words: Atmospheric CO₂ enrichment, Soil microbes

中图分类号:

S716

赵晓松, 关德新, 吴家兵, 金昌杰, 韩士杰. 长白山阔叶红松林的零平面位移和粗糙度[J]. 生态学杂志, 2004, (5): 84-88,115.

ZHAO Xiaosong, GUAN Dexin, WU Jiabing, JIN Changjie, HAN Shijie. Zero-plane displacement and roughness length of the mixed forest of broad-leaved and Korean-pine in Changbai Mountain[J]. cje, 2004, (5): 84-88,115.

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