| 山区林地粗糙度的推求 |
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| 引用本文： | 冯起,张艳武,苏永红,司建华,常宗强,席海洋,MIKAMI Masao.山区林地粗糙度的推求[J].中国沙漠,2006,26(6):1046-1051. |
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| 作者姓名： | 冯起 张艳武 苏永红 司建华 常宗强 席海洋 MIKAMI Masao |
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| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000
2. 日本运输省气象研究所大气与环境研究室,052-1556,日本 |
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| 基金项目： | 中国科学院知识创新工程项目;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 应用实测资料计算复杂地面森林冠层的动量、潜热和粗糙参数以及动量总体输送系数（CM）、热量总体输送系数（CH）和水汽总体输送系数（CE）的参数。使用最大相关法计算本地风的粗糙度Z0M与零通量面d0M,同样结果较满意。在假设θS=θRAD的情况下计算水汽粗糙度Z0H,表明斯坦顿系数S-1t=ln（Z0M/Z0H）/K比过去的调查结果大。温度的零通量计算结果为d0H=（11.9）,该值与d0M值（=12.8）相近。通过修改后方程计算表面湿度参数α,表面湿度参数α的值为0.61,该值与冠层的相对湿度相近。因此α的值可以用冠层顶部的相对湿度来计算。计算森林区粗糙度的方法和模型可推广应用到黑河流域。
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| 关 键 词： | 山区林地 粗糙度 模型 |
| 文章编号： | 1000-694X（2006）06-1046-05 |
| 收稿时间： | 2005-06-13 |
| 修稿时间： | 2005-08-22 |
Calculation of Roughness Parameters over Forest in a Hilly Region |
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| FENG Qi,ZHANG Yan-wu,SU Yong-hong,SI Jian-hua,CHANG Zong-qiang,XI Hai-yang,MIKAMI Masao.Calculation of Roughness Parameters over Forest in a Hilly Region[J].Journal of Desert Research,2006,26(6):1046-1051. |
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| Authors: | FENG Qi ZHANG Yan-wu SU Yong-hong SI Jian-hua CHANG Zong-qiang XI Hai-yang MIKAMI Masao |
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| Institution: | 1.Cold &; Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Meteorological Research Institute of Japan, Tsukuba 052-1556 |
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| Abstract: | Applying actually measured data we have calculated the bulk parameterization of momentum, apparent and latent heat fluxes, roughness as well as the related bulk transfer coefficients, CM, CH and CE in a hilly region with vegetation. In the study, the relative surface temperature and relative humidity profiles with canopy were also measured. By use of the maximum correlation method, the roughness length and zero-plane displacement for wind, Z0M and d0M, were determined. The roughness length for water vapor (Z0H) was evaluated by sassuming that θS=θRAD. The result indicates that the Stanton number, S-1t=ln(Z0M/Z0H)/K, shows larger value as compared with past investigations. And zero-plane displacement for temperature d0H(=11.9) was almost same value as d0M (=12.8). Base on the modified bulk formulation by use of the surface wetness parameter α, the value α was evaluated as 0.61, which agreed well with the relative humidity, near the canopy top. This calculation method and model could be applied in the Heihe river basin. |
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| Keywords: | forest in hilly region roughness length model |
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