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Citation:

Character of Coarse Woody Debris in a Castanopsis fissa-Diospyros morrisiana Formation in Lingnan Region, China

  • Received Date: 2015-11-27
  • [Objective] In order to understand the basic data and establish biomass regression equation of coarse woody debris(CWD) in a Castanopsis fissa-Diospyros morrisiana formation which was not influenced by ice storm, we carried out field investigation and sampling in Xiaokeng National Park, located in north of Guangdong.[Methods] We analyzed the basic characteristics and existing forms, distribution patterns in decay class and diameter of CWD in different landforms by plant plot investigation method.[Results] The results indicated that the total biomass of CWD was 8.25 t·hm-2, and the biomass in different decay class(1、2、3、4、5) occupied 41.07%,17.75%,13.89%,21.74%,5.55% respectively in the forest. The CWD was mainly composed of fallen logs and snags, followed by the large branches and stumps. Diameter structure of CWD concentrated in the range of 5~10 cm and 10~15 cm.[Conclusions] The spatial heterogeneity of CWD was high, but there was no significant difference in different landforms. Furthermore, biomass regression equation of CWD in different decay class levels were established by using 423 measured diameter and weight data of CWD.
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Character of Coarse Woody Debris in a Castanopsis fissa-Diospyros morrisiana Formation in Lingnan Region, China

  • 1. Research Institute of Tropical Foresty, Chinese Academy of Foresty, Guangzhou 510520, Guangdong, China
  • 2. Xiaokeng Forestry Farm of Qujiang District, Shaoguan City, Shaoguan 512162, Guangdong, China

Abstract: [Objective] In order to understand the basic data and establish biomass regression equation of coarse woody debris(CWD) in a Castanopsis fissa-Diospyros morrisiana formation which was not influenced by ice storm, we carried out field investigation and sampling in Xiaokeng National Park, located in north of Guangdong.[Methods] We analyzed the basic characteristics and existing forms, distribution patterns in decay class and diameter of CWD in different landforms by plant plot investigation method.[Results] The results indicated that the total biomass of CWD was 8.25 t·hm-2, and the biomass in different decay class(1、2、3、4、5) occupied 41.07%,17.75%,13.89%,21.74%,5.55% respectively in the forest. The CWD was mainly composed of fallen logs and snags, followed by the large branches and stumps. Diameter structure of CWD concentrated in the range of 5~10 cm and 10~15 cm.[Conclusions] The spatial heterogeneity of CWD was high, but there was no significant difference in different landforms. Furthermore, biomass regression equation of CWD in different decay class levels were established by using 423 measured diameter and weight data of CWD.

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