Measurement and Analysis of Formation Conditions of Dew in Carex Lasiocarpa Marsh
openalex(2009)
摘要
In order to investigate the dew amounts and analysis formation conditions of dew by examining the correlations between dew amounts and meteorological factors in Carex lasiocarpa marsh in the Sanjiang Plain,the dew amounts and several meteorological factors were monitored during the growing season from June to September in 2005 and 2008 at the Sanjiang Mire Wetland Experimental Station,Chinese Academy of Sciences.Dew was collected by woodstick made by poplar tree in Carex lasiocarpa marsh and the amounts were estimated by subtraction method.The results indicated that average daily accumulated dew amounts reached the peak in August.The highest dew amounts in Carex lasiocarpa marsh were 0.201 mm/d,and the most frequent dew volume ranged from 0.08 mm/d to 0.14 mm/d.The amounts correlated positively with relative humidity,dew point temperature,and water vapor pressure.Whereas it correlated negatively with wind speed.The dew production in Carex lasiocarpa marsh more frequently occurred under the conditions of wind speed around 2.0 m/s,the water vapor pressure above 9 hPa;the relative humidity between 90% and 95% and dew point temperature above 6 ℃.
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关键词
dew amount,meteorological factor,Carex lasiocarpa marsh,correlation,the Sanjiang Plain
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