主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2018, Vol. 34 ›› Issue (6): 156-160.doi: 10.3969/j.issn.1673-503X.2018.06.019

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Variation characteristics of soil heat flux in Panjin reed wetland

LV Guo-hong, WANG Xiao-ying, JIA Qing-yu, WEN Ri-hong, XIE Yan-bing   

  1. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China
  • Received:2017-12-04 Revised:2018-01-31 Online:2018-12-31 Published:2018-12-31

Abstract: Taking reed wetland in Panjin as study testbed,the dynamic variation of soil heat flux at different soil depths and the effect of soil temperature on soil heat flux were analyzed.The results show that diurnal and annual variations of soil heat flux present an "S" curve pattern for different soil depths.The amplitude of diurnal variation of soil heat flux obviously decreased along with the soil depth.Daily-averaged soil heat fluxes show high values at 5 cm depth,followed by that at 10 cm depth and 15 cm depth.For soil heat flux in four seasons,the maximum value of daily-averaged soil heat flux is in spring,followed by that in summer and autumn,with the lowest value in winter.The diurnal variations of soil heat flux show the same characteristic under different weather types.The amount of soil heat flux under different weather types in order from largest to smallest is sunny days > cloudy days > rainy days.Soil temperature at 15 cm depth affects the soil heat flux of different depths significantly.The correlation coefficient between soil temperature at 15 cm depth and soil heat flux of different depths become larger along with the depth of the soil layer.

Key words: Reed wetland, Soil heat flux, Soil temperature

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