GUO Haiqiang, ZHAO Bin, CHEN Jiquan, YAN Yaner, LI Bo, CHEN Jiakuan. Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China[J]. Chinese Geographical Science, 2010, 20(1): 23-29. doi: 10.1007/s11769-010-0023-2
Citation: GUO Haiqiang, ZHAO Bin, CHEN Jiquan, YAN Yaner, LI Bo, CHEN Jiakuan. Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China[J]. Chinese Geographical Science, 2010, 20(1): 23-29. doi: 10.1007/s11769-010-0023-2

Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China

doi: 10.1007/s11769-010-0023-2
Funds:  Under the auspices of National Natural Science Foundation of China (No.30870409,40471087);Science and Technology Commission of Shanghai (No.07DZ12038-2);the Program for New Century Excellent Talents in University (No.NCET-06-0364) funded by the Ministry of Education of China
  • Received Date: 2009-05-21
  • Rev Recd Date: 2009-09-22
  • Publish Date: 2009-12-01
  • The energy budget and regulating factors were investigated over an estuarine wetland during one year of continuous measurement in 2006.The results show that the seasonal changes of the energy fluxes and Bowen ratio(β) were greatly affected by incoming shortwave radiation and canopy growth.During the non-growing season and early-growing season, sensible heat(H) dominated the energy flux, and β could reach a maximum of 2.5, while during most of the growing season, latent heat dominated the energy flux and β fluctuated from 0.4 to 1.0.The energy budget ratio in growing season was about 0.76, and the value would be higher if heat exchange during tidal flooding was in-cluded.During tidal flooding days, β was slightly higher than that at exposure days in most cases.Vegetation cover seems exert little effect on energy partitioning except in March when the standing dead grass intercepted the incoming radiation that might reach the soil surface and reduce the turbulence between soil and atmosphere, thus suppressing the evaporation from the soil though the soil mositure was high at that time.
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Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China

doi: 10.1007/s11769-010-0023-2
Funds:  Under the auspices of National Natural Science Foundation of China (No.30870409,40471087);Science and Technology Commission of Shanghai (No.07DZ12038-2);the Program for New Century Excellent Talents in University (No.NCET-06-0364) funded by the Ministry of Education of China

Abstract: The energy budget and regulating factors were investigated over an estuarine wetland during one year of continuous measurement in 2006.The results show that the seasonal changes of the energy fluxes and Bowen ratio(β) were greatly affected by incoming shortwave radiation and canopy growth.During the non-growing season and early-growing season, sensible heat(H) dominated the energy flux, and β could reach a maximum of 2.5, while during most of the growing season, latent heat dominated the energy flux and β fluctuated from 0.4 to 1.0.The energy budget ratio in growing season was about 0.76, and the value would be higher if heat exchange during tidal flooding was in-cluded.During tidal flooding days, β was slightly higher than that at exposure days in most cases.Vegetation cover seems exert little effect on energy partitioning except in March when the standing dead grass intercepted the incoming radiation that might reach the soil surface and reduce the turbulence between soil and atmosphere, thus suppressing the evaporation from the soil though the soil mositure was high at that time.

GUO Haiqiang, ZHAO Bin, CHEN Jiquan, YAN Yaner, LI Bo, CHEN Jiakuan. Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China[J]. Chinese Geographical Science, 2010, 20(1): 23-29. doi: 10.1007/s11769-010-0023-2
Citation: GUO Haiqiang, ZHAO Bin, CHEN Jiquan, YAN Yaner, LI Bo, CHEN Jiakuan. Seasonal Changes of Energy Fluxes in an Estuarine Wetland of Shanghai, China[J]. Chinese Geographical Science, 2010, 20(1): 23-29. doi: 10.1007/s11769-010-0023-2
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