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Chinese Journal of Applied Ecology ›› 1995, Vol. 6 ›› Issue (2): 119-122.

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Vegetation recovery in subtropical monsoon evergreen broad-leaved forest Ⅱ Gas exchange of woody legumes

Sun Guchou, Zeng Xiaoping, Wei Chuanzhao, Yu Zuoyue   

  1. South China Institute of Botany, Academia Sinica, Guangzhou 510650
  • Received:1993-10-27 Revised:1994-05-30 Online:1995-04-25 Published:1995-04-25

Abstract: Monthly variation of photosynthetic rates of leaves was measured with woody legumesand native plants as Schima superba and S.wallichii.The daily gas exchange rates inleaves of these plants and subtropical evergreen broad leaved plants were also determinedin July and December.Native plants have a maximum photosynthetic rate in May or September, which decreases among this duration due to the violent solar radiation andhigh air temperature.Woody legumes as Acacia holosericea and A.auriculaeformis alsohave a higher photosynthetic rate, which shows that these plants can adapt to the localhot weather in summer.The daily accumulation of photosynthetic products is 8.59g, m-2for Cinnamomum burmani, 5.69 g m-2 for A.mangium and 7.46 g·m-2 for native plant S.superba in July.Therefore, mixing native plants or evergreen broad leaved trees withwoody legumes will be beneficial to the promotion of solar radiation utilization, increase of photosynthetic production and recovery of vegetation in subtropical evergreen broadleaved forest.

Key words: Gas exchange, Woody legume, Native plant, Vegetation recovery