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

doi:10.7677/ynzwyj201414005

Abstract

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

LI Xiong, YIN Xin, XI Hou-Cheng, ZHOU Xin-Mao, YANG Yong-Ping. Investigation and Analysis of Impact from High Frost on Vascular Plants in the Kunming Botanical Garden[J]. Plant Diversity, 2014, 36(05): 639-652.

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