[1]WU Yan-wen,ZHANG Jin-chi,GU Zhe-yan,et al.Study on Photosynthesis-transpiration Characteristics of Two Broadleaf Woody Plant Species in the Forests of Baishanzu[J].Research of Soil and Water Conservation,2014,21(06):204-210.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 06
Page number:
204-210
Column:
Public date:
2014-12-28
- Title:
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Study on Photosynthesis-transpiration Characteristics of Two Broadleaf Woody Plant Species in the Forests of Baishanzu
- Author(s):
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WU Yan-wen, ZHANG Jin-chi, GU Zhe-yan, LIU Xin, HAN Cheng
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Nanjing Forestry University, Nanjing 210037, China
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- Keywords:
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Baishanzu; net photosynthetic rate; transpiration rate; physiological factor; ecological factor
- CLC:
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S718.43
- DOI:
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- Abstract:
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Photosynthesis and transpiration play the significant roles in the evaluation of ecological benefits from a forest ecosystem. In order to determine their photosynthesis and transpiration characteristics at canopy level, this paper conducted some measurements with Li-6400 portable photosynthetic apparatus on two typical tree species in the forest ecosystem of Fengyang Mountain. Results show that the main factors influencing Pn of Stewartia acutisepala were WUE and PYR, meanwhile, the main factors influencing Pn of Pterostyrax corymbosus were Ci and PYR. In the process of daily variation of Pn, the value of Stewartia acutisepala was always higher than Pterostyrax corymbosus. It can be judged that the photosynthesis of Stewartia acutisepala was stronger than Pterostyrax corymbosus. Additionally, the main factors influencing Tr of Stewartia acutisepala were Gs and PAR, while the main factors influencing Tr of Pterostyrax corymbosus were Gs and RH. According to daily variation of Tr, the transpiration of Stewartia acutisepala was stronger than Pterostyrax corymbosus. According to the analysis of WUE, the carbon water balance ability of Stewartia acutisepala was better than Pterostyrax corymbosus. Therefore, the adaptability of Stewartia acutisepala to this habitat was superior to Pterostyrax corymbosus, and the former was more widely distributed.