水土保持研究2013，Vol.20Issue(4)：149-154,159,7.
极端干旱区夏季不同土地类型的小气候特征差异研究
Research on the Micro-climate Characteristic Differences of Different Underlying Surface in the Hyper-arid Zone in Summer
摘要
Abstract
The eigenvalues including daily variation amplitude,and vertical variation of air temperature,ground temperature,relative humidity,wind speed,and evaporation in 5 different land types were analyzed based on the observation of micro-climate factors.The results indicated that:the air temperature,wind speed,evaporation decrease progressively in the order of desert,gobi,cotton fields,corn fields,however,relative humidity increase gradually in that order.Generally,with the increase of height,wind speed of each surface decreases,and the ground temperature declines in company with depth.Except for maize field,air temperature and relative humidity of each surface become bigger,as the height builds up.Evaporation of five surfaces at night reduces abundantly,particularly the decline proportion of oasis,which is 86％.The ecotone with the transitional nature is similar to the desert,gobi in the climate eigenvalue and its change trend,amplitude.Even because of Gobi's relatively high altitude,the eigenvalue and changes amplitude of factors of ecotone are higher than that of gobi,lying between the desert and cotton field.For instance,the ecotone's air temperature is higher than gobi,cotton field,and lower than desert.Owing to the differences of water and vegetation coverage,the correlation between air temperature and ground temperature of desert,gobi are poorer; the maize and cotton field are in the middle; the ecotone is the best.关键词
极端干旱区/小气候/土地类型/特征/差异Key words
hyper-arid zone/ micro-climate/ land type/ characteristic/ differences分类
天文与地球科学引用本文复制引用
闫人华,熊黑钢,张芳,夏英辉..极端干旱区夏季不同土地类型的小气候特征差异研究[J].水土保持研究,2013,20(4):149-154,159,7.基金项目
国家自然科学基金(41171165,41261049) （41171165,41261049）
国家教育部"长江学者和创新团队发展计划"创新团队项目(IRT1180) （IRT1180）
