Plant Diversity ›› 2014, Vol. 36 ›› Issue (05): 639-652.doi: 10.7677/ynzwyj201414005

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Investigation and Analysis of Impact from High Frost on Vascular Plants in the Kunming Botanical Garden

LI Xiong-1、2、3, YIN Xin-4, XI Hou-Cheng-5, ZHOU Xin-Mao-6, YANG Yong-Ping-1、2   

  1. 1 Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; 2 Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; 3 University of Chinese Academy of Sciences, Beijing 100049, China; 4 School of Life Sciences, Yunnan University, Kunming 650091, China; 5 Guiyang Botanical Garden of Medicinal Plants, Guiyang 550002, China; 6 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
  • Received:2014-01-07 Online:2014-09-25 Published:2014-03-28
  • Supported by:

    国家自然科学基金项目 (31170256)

Abstract:

High frost, a common natural disaster, means heavy damage to plants with temperature dropped below 0℃. In midDecember 2013, Kunming suffered from severe frosts, resulting in largeareadamage of the plants, which brought huge losses. To provide a reference for scientifically and reasonably preventing and reducing frost freezing to garden plants, it is necessary to understand resistance of various plant catagories to extreme cold hazards. In this paper, a sample survey on 225 plant species from 90 families was performed for victimized plants in Kunming Botanical Garden. With the statistical analysis of the relationship between damage degree and plant systematics, morphology, distribution or other factors, we drew several conclusions. For example, ferns had a relatively poor frost resistance while gymnosperms mostly were strong, and angiosperms showed larger differences in frost resistance; annual herbaceous and evergreen woody had a stronger resistance than perennial herbaceous and deciduous woody respectively; native species exhibited greater resistance than introduced species. According to the results, some suggestions were given for protecting existing garden plants and constructing new landscapings. That is based on the strength of frost resistance of different plants, on one hand to give the garden plants a positive and effective protection and prevention measures against frost damage, on the other hand to select species suitable for planting combined environmental conditions with characters of plants.

Key words: High frost, Extreme low temperature, Kunming, Subtropical evergreen broadleaf forest, Frost resistance

CLC Number: 

  • Q 948.112.2