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Forest and Grassland Resources Research >

2019 , Vol. 0 >Issue 2: 142 - 146

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2019.02.021

Research Bulletin

Water Loss Characteristics of Excised-leaves of 15 Evergreen Woody Plants in Kunming,Yunnan Province

  • Shiyou LI ,
  • Jing LUO ,
  • Qiaorong ZHANG ,
  • Ting JIANG ,
  • Kunlun WANG ,
  • Qiuhua Wang ,
  • Yane HU
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  • 1. School of Fire Science and Technology,Southwest Forestry University,Kunming 650224,China
    2. Key Laboratory of Forest Disaster Warning and Control,Kunming 650224,China

Received date: 2019-01-06

  Revised date: 2019-03-31

  Online published: 2020-09-22

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Abstract

Based on the phenomenon that the broad-leaved forest was as flammable as Pinus.yunnaneneis forest,P.armandii forest,P.yunnanensis var. pygmaea forest under certain conditions,the excised-leaves of 15 evergreen woody plants collected from Ternstroemia gymnanther,Illicium simonsii,Camellia pitardii,Cinnamomum glanduliferum,Rhododendron siderophyllum,Castanopsis orthacantha,Lithocarpus mairei,Cyclobalanopsis glaucoides,Rhododendron spinuliferum,Myrica nana,R.decorum,Michelia yunnanensis,P.yunnaneneis,P.armandii,P.yunnanensis var. pygmaea respectively were sampled to study the water loss characteristics in Kunming,Yunnan province.The mass of each fresh samples and its mass heated in 0.5h,1h,1.5h,2h,3h,4h,5h,17h at 80 ℃ were weighed.The water loss characteristics of 15 samples were analyzed according to the water loss rate of each sample in each period,the water loss rate of each sample in each second and absolute moisture content of each sample in each period.The results showed that the water loss rate of 15 samples was fast firstly then turned to be slow and coniferous leaf samples hold water better than broad-leaved samples.From the perspective of water loss,3 kinds of coniferous leaves were slower than 12 kinds of broad leaves and the flame retardancy was opposite.The water loss rate of excised-leaves under the action of heat can be used as an indicator to evaluate the plants combustibility.

Key words： Kunming area; woody plant; excised-leaf; rate of water loss; water loss characteristics

Cite this article

Shiyou LI , Jing LUO , Qiaorong ZHANG , Ting JIANG , Kunlun WANG , Qiuhua Wang , Yane HU . Water Loss Characteristics of Excised-leaves of 15 Evergreen Woody Plants in Kunming,Yunnan Province[J]. Forest and Grassland Resources Research, 2019 , 0(2) : 142 -146 . DOI: 10.13466/j.cnki.lyzygl.2019.02.021

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