青海湖流域湿地小气候特征

doi:10.13866/j.azr.2019.01.21

Abstract

Abstract: In this paper,the characteristics of microclimate in an alpine wetland were analyzed based on the meteorological data observed by Wanyanshan and Xiaobohu weather stations in the alpine wetland ecosystem in the Qinghai Lake Basin.The results showed that the solar radiation in the Qinghai Lake Basin was high.The maximum value of reflected radiation occurred in April,and the values of global radiation,atmospheric long wave radiation,surface long wave radiation,net radiation and soil heat flux were all high in summer but low in winter.The annual surface albedo in the Wayanshan wetland was 0.26,and the average surface albedo in summer was 0.2 and lower than that in the Longbao wetland and at Xidatan and Wudaoliang.The maximum values of specific humidity at Wayanshan and Xiaobohu weather stations occurred in summer,and the minimum ones in winter.Precipitation occurred mainly in the period from May to September,accounting for more than 90% of the annual precipitation.The maximum values of air temperature and 5 cm deep ground temperature at the two stations occurred in August,and the lowest ones in January.Influenced by the difference of thermal properties between the lake and land,the prevailing wind at Xiaobohu Weather Station was westerly wind in daytime and east wind at night all the year round.Affected by the topography,however,the prevailing wind at Wayanshan Weather Station was southwest wind all the year round.

Key words: alpine wetland, radiation flux, surface albedo, temperature, specific humidity, Qinghai Lake Basin

GAO Li-ming, ZHANG Le-le, CHEN Ke-long. Microclimate in an Alpine Wetland in the Qinghai Lake Basin[J].Arid Zone Research, 2019, 36(1): 186-192.

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Microclimate in an Alpine Wetland in the Qinghai Lake Basin

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