中文摘要：

利用廓线法计算了黑河中上游地区盈科农田站、冰沟稀疏草地站、阿柔牧场站和大冬树山垭口积雪观测站的总体输送系数和地表粗糙度。结果表明，地表粗糙度与植被覆盖度和高度以及下垫面的性质有关，夏季地表粗糙度大小是农田站最大，其次是牧场站和稀疏草地站，高寒草甸站最小。下垫面状况还影响动量总体输送系数对稳定度的依赖程度，地表粗糙度大的地区强于地表粗糙度小的地区。

英文摘要：

The momentum bulk transfer coefficient and roughness length are calculated by the profile- flux method at Yingke oasis, Binggou sparse grass, Arou meadow and Dadongshu Mountain Yakou snow stations in upper and middle reaches of Heihe River basin. The results show that the roughness length is related to underlying surface properties and vegetation coverage and height. The maximum and roughness lengths appeared at Yingke oasis station and Yakou snow station, respectively in sun pared with values at Arou meadow station and Binggou sparse grass station. The land cover pro fluence the relativity of momentum bulk transfer coefficient on stability. At different statioi roughness length is the better relativity of one. bulk transfer coefficient to stability than the little