Journal of East China Normal University(Natural Sc ›› 2011, Vol. 2011 ›› Issue (4): 45-52.

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Leaf frost sensitivity and percentage of electrolyte leakage of the evergreen woody species in Tiantong region, Zhejiang Province

ZHONG Qiang 1, KANG Meng 1, GUO Ming 1, WANG Xi-hua 1,2, WANG Liang-yan 3, YAN En-rong 1,2   

  1. 1. Department of Environment Science, East China Normal University, Shanghai 200062, China; 2. Tiantong National Station of Forest Ecosystem, Chinese National Ecosystem Observation and Research Network, Ningbo Zhejiang 315114, China; 3. Tiantong National Forest Park, Ningbo Zhejiang 315114, China
  • Received:2010-04-01 Revised:2010-07-01 Online:2011-07-05 Published:2011-11-12

Abstract: In this study, leaf percentage of electrolyte leakage was examined by using respectively 26 ℃, 0 ℃ and -5 ℃ temperate treatments, to reflect the leaf frost sensitivity for 59 evergreen woody plants in Tiantong region, Zhejiang province. The objective was to select frost-resistant woody plants for establishing frost-tolerant plantations. The results showed: (1) the most evergreen woody plants acclimatized themselves to 0 ℃, indicating few leaf damage; whereas, -5 ℃ treatment led to a significant increase of leaf percentage of electrolyte leakage for all plants, suggesting a heavy leaf damage; (2) among three dominant families of plants, the frost-resistance was higher in Lauraceae and Fagaceae than in Symplocaceae; and (3) evergreen broadleaf plants was more frost-resistant than conifer species. Therefore, the frost-resistant plants belonging to Lauraceae and Fagaceae families should be preference species in afforestation.

Key words: relative conductivity, cold resistance, life form, evergreen broad-leaved forests

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