Volume 29 Issue 1
Feb.  2012
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ZHANG Jun, WEN Guo-sheng, ZHANG Ming-ru, LIU Xin-xin. Autumnal water features of eight tree species in Zhejiang[J]. Journal of Zhejiang A&F University, 2012, 29(1): 35-40. doi: 10.11833/j.issn.2095-0756.2012.01.007
Citation: ZHANG Jun, WEN Guo-sheng, ZHANG Ming-ru, LIU Xin-xin. Autumnal water features of eight tree species in Zhejiang[J]. Journal of Zhejiang A&F University, 2012, 29(1): 35-40. doi: 10.11833/j.issn.2095-0756.2012.01.007

Autumnal water features of eight tree species in Zhejiang

doi: 10.11833/j.issn.2095-0756.2012.01.007
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  • Corresponding author: WEN Guo-sheng
  • Received Date: 2011-04-02
  • Rev Recd Date: 2011-05-05
  • Publish Date: 2012-02-20
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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Autumnal water features of eight tree species in Zhejiang

doi: 10.11833/j.issn.2095-0756.2012.01.007
    Corresponding author: WEN Guo-sheng

Abstract: To determine the value of photosynthetic rate (Pn),transpiration rate (Tr),and water feature parameters [osmotic potential at turgorloss peint (p),water potential at water saturation point (0),(rate of bound water in cell) (VP /V0),relatire content of water (CRW),and bulk modulus of elasticity ()] of eight tree species,namely Schima superba,Castanopsis sclerophylla,Lithocarpus glabra,Lithocarpus harlandii,Photinia serrulata,Loropetalum chinense var. rubrum,Podocarpus nagi,and Elaeocarpus sylvestris,in the Zhejiang hilly area during autumn,a Li-Cor (Li)-6400 photosynthesis system,a pressure chamber,and pressure- volume (P-V) technology were utilized. A correlation analysis of the parameters was conducted. Results of the correlation analysis showed significant (P < 0.05) relationships between VP /V0 and (r = 0.809),VP /V0 and 0 (r = -0.732),VP /V0 and p (r = 0.801). The highest peak water use efficiency (WUE) was found in S. superba (28.52 mmolmol-1) and the lowest with C. sclerophylla (12.92 mmolmol-1). The highest water use efficiency per day was with Lithocarpus glabra (10.44 mmolmol-1),where as the lowest was for C. sclerophylla (4.03 mmolmol-1). Comparing the five water parameters,the order of water absorption capacity was S. superba > Loropetalum chinense var. rubrum > Lithocarpus harlandii > C. sclerophylla > Lithocarpus glabra > E. sylvestris > Photinia serrulata > Podocarpus nagi;whereas the order of dehydration tolerance was S. superba > Loropetalum chinense var. rubrum > Lithocarpus harlandii > C. sclerophylla > Lithocarpus glabra > E. sylvestris > Photinia serrulata > Podocarpus nagi. [Ch,1 fig. 4 tab. 10 ref.]

ZHANG Jun, WEN Guo-sheng, ZHANG Ming-ru, LIU Xin-xin. Autumnal water features of eight tree species in Zhejiang[J]. Journal of Zhejiang A&F University, 2012, 29(1): 35-40. doi: 10.11833/j.issn.2095-0756.2012.01.007
Citation: ZHANG Jun, WEN Guo-sheng, ZHANG Ming-ru, LIU Xin-xin. Autumnal water features of eight tree species in Zhejiang[J]. Journal of Zhejiang A&F University, 2012, 29(1): 35-40. doi: 10.11833/j.issn.2095-0756.2012.01.007

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