Quantitative characteristics of the dead logs of the rare and endangered Tsuga longibracteata forests

WANG Lei,HE Dongjin,YOU Huiming,LIU Jinshan,CAI Changtang,YOU Weibin XIAO Shihong,HU Jing,ZHENG Xiaoyan

Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2013, Vol. 37 ›› Issue (02) : 164-168.

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Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2013, Vol. 37 ›› Issue (02) : 164-168. DOI: 10.3969/j.issn.1000-2006.2013.02.030

Quantitative characteristics of the dead logs of the rare and endangered Tsuga longibracteata forests

  • WANG Lei1,HE Dongjin1*,YOU Huiming1,LIU Jinshan2,CAI Changtang2,YOU Weibin1 XIAO Shihong1,HU Jing1,ZHENG Xiaoyan1
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Abstract

The dynamic changes of diameter distribution, decay class, height/length distribution and volume distribution were studied in this paper. The results showed that:(1)The Tsuga longibracteata forests in Tianbaoyan National Nature Reserve was mainly composed of small-diameter dead logs which showed a reduction trend in diameter with altitude increasing.While mid diameter logs showed a downward trend in diameter with altitude increasing after the first increase with altitude increasing.And the amount of large diameter dead logs was the least.(2)The height/length ratio of dead logs mainly distributed at the range of 1-6 m.And with the height / length ratio increase,the proportion of dead logs in various altitude reduced.(3)The volume of dead logs in order was Ⅲ>Ⅳ>Ⅱ>Ⅴ>Ⅰ.(4)With the increase of diameter,the volume of dead logs was in order of mid diameter>large diameter>small diameter.

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WANG Lei,HE Dongjin,YOU Huiming,LIU Jinshan,CAI Changtang,YOU Weibin XIAO Shihong,HU Jing,ZHENG Xiaoyan. Quantitative characteristics of the dead logs of the rare and endangered Tsuga longibracteata forests[J]. Journal of Nanjing Forestry University (Natural Sciences Edition). 2013, 37(02): 164-168 https://doi.org/10.3969/j.issn.1000-2006.2013.02.030

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