短柄五加蒸腾作用及其与生理生态因子相关性的初步研究

doi:10.11707/j.1001-7488.20030227

Scientia Silvae Sinicae ›› 2003, Vol. 39 ›› Issue (2): 158-161.doi: 10.11707/j.1001-7488.20030227

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PRELIMINARY STUDIES ON TRANSPIRATION OF ACANTHOPANAX BRACHYPUS AND RELATIONSHIP WITH PHYSIOECOLOGICAL FACTORS

Yue Chunlei,Jiang Hong,Zhu Yinmei

Zhejiang Forestry Academy Hangzhou310023;Institute of Geographical Science and Natural Resources Research, CAS Beijing100101;College of Environmental and Resource Science,Zhejiang University Hangzhou310029

Received:2001-04-09 Revised:1900-01-01 Online:2003-03-25 Published:2003-03-25

Abstract

Abstract:

The transpiration characteristics of Acanthopanax brachypus and their relationship with the ecological factors of photosynthetic active radiation (PAR), air temperature and air relative humidity etc, were studied in two habitats of open land and under-forest in this paper. The transpiration curve of Acanthopanax brachypus in two habitats belonged to single-peak type. The maximum transpiration rate and diurnal average transpiration rate of Acanthopanax brachypus on open land were higher than those in forest. PAR was the most important ecological factor affecting the transpiration rate in forest. On open land, air temperature and relative humidity had significant effects on the transpiration rate; PAR had a little effect on transpiration rate. Water use efficiency on open land was higher than that in forest. Based on the preliminary analysis of water physiological ecology of Acanthopanax brachypus, it was concluded that open land with better water conditions was suitable for its growth.

Key words: Endangered plant, Acanthopanax brachypus, Transpiration, Water use efficiency

Yue Chunlei;Jiang Hong;Zhu Yinmei. PRELIMINARY STUDIES ON TRANSPIRATION OF ACANTHOPANAX BRACHYPUS AND RELATIONSHIP WITH PHYSIOECOLOGICAL FACTORS[J]. Scientia Silvae Sinicae, 2003, 39(2): 158-161.

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PRELIMINARY STUDIES ON TRANSPIRATION OF ACANTHOPANAX BRACHYPUS AND RELATIONSHIP WITH PHYSIOECOLOGICAL FACTORS

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