Volume 28 Issue 4
Aug.  2011
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ZHANG Ying, ZHENG Xi-lai, WU Cheng-cheng, ZHANG Yu-rong. Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary[J]. Journal of Zhejiang A&F University, 2011, 28(4): 569-575. doi: 10.11833/j.issn.2095-0756.2011.04.008
Citation: ZHANG Ying, ZHENG Xi-lai, WU Cheng-cheng, ZHANG Yu-rong. Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary[J]. Journal of Zhejiang A&F University, 2011, 28(4): 569-575. doi: 10.11833/j.issn.2095-0756.2011.04.008

Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary

doi: 10.11833/j.issn.2095-0756.2011.04.008
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  • Corresponding author: ZHENG Xi-lai
  • Publish Date: 2011-08-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary

doi: 10.11833/j.issn.2095-0756.2011.04.008
    Corresponding author: ZHENG Xi-lai

Abstract: To enhance groundwater use efficiency and to discover variation in phreatic evaporation from Phragmites communis plots,field experiments were carried out in incubators with a water supply in the test field of Liao-he estuary from 9 August to 1 October,2009. 11 incubators were installed with different water depth. That is 10 cm above soil surface and 5,20,40 and 60 cm underground water respectly. The design that incubators No.6 to No.11 were set with no Phragmites communis while No.1 to No.5 with Phragmites communis was to get the transpiration,evaporation and evapotranspiration law of Phragmites communis compared with water surface and bare land. Results showed that:phreatic evaporation from Phragmites Communis plots in incubators with different groundwater depths was changed greatly with the weather. Daily phreatic evaporation could vary as much as 9.0 mm. Accumulative phreatic evaporation from Phragmites communis plots with different groundwater depths was larger than bare land. Accumulative phreatic evaporation from P. communis plots was 3.0 - 3.5 times bare land. Phreatic evaporation from Phragmites communis plots was similar to the water surface treatments. However,when atmospheric evaporation capacity increased to a certain extent,the increasing rate of phreatic evaporation intensity on land with and without Phragmites communis growing showed a decreasing trend. Finnaly,through parameter fitting,a good fit for the power function formula and exponential formula of phreatic evaporation were obtained. Therefore,these formulas were suitable for application in research on phreatic evaporation in the study area.[Ch,6 fig. 3 tab. 14 ref.]

ZHANG Ying, ZHENG Xi-lai, WU Cheng-cheng, ZHANG Yu-rong. Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary[J]. Journal of Zhejiang A&F University, 2011, 28(4): 569-575. doi: 10.11833/j.issn.2095-0756.2011.04.008
Citation: ZHANG Ying, ZHENG Xi-lai, WU Cheng-cheng, ZHANG Yu-rong. Phreatic evaporation in Phragmites communis wetlands of the Liao-he Estuary[J]. Journal of Zhejiang A&F University, 2011, 28(4): 569-575. doi: 10.11833/j.issn.2095-0756.2011.04.008

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