Journal of Guangxi Normal University(Natural Science Edition) ›› 2018, Vol. 36 ›› Issue (4): 151-158.doi: 10.16088/j.issn.1001-6600.2018.04.019

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Tolerance Evaluation and Physiological Responses of the ClonalPlant Alchornea trewioides in Karst Rocky Mountains

ZHANG Yajun1, MA Jiangming1,2*, SU Jing1, QIN Jiashuang1, MO Yanhua1   

  1. 1. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection,Ministry of Education,Guilin Guangxi 541006, China;
    2.University Key Laboratory of Karst Ecology and Environmental Change ofGuangxi Province (Guangxi Normal University), Guilin Guangxi 541004, China
  • Received:2017-10-25 Published:2018-10-20

Abstract: Compared with the undisturbed treatment, the effects of human disturbance (burning disturbance and cutting disturbance) on the physiological indices of the clonal plant Alchornea trewioides naturally growing in karst rocky mountains were investigated. Measurements included contents of chlorophyll, malonaldehyde (MDA) and osmoregulation substance in the plant leaves. The results indicated that among the three disturbance treatments, the highest chlorophyll content was found in the cutting disturbance treatment, the cell membrane has a relatively high degree of damage in the undisturbed treatment, and the best osmoregulation ability was found in the burning disturbance treatment. According to a comprehensive evaluation based on subordinate function of fuzzy mathematics, A. trewioides with burning disturbance had the best tolerance among the three disturbances, with a lower tolerance in cutting disturbance, and the lowest tolerance in undisturbed, so intermediate disturbance was beneficial to the propagation of A. trewioides.

Key words: karst stony mountain, disturbances, physiological index, tolerance evaluation

CLC Number: 

  • Q945.79
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