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FOREST RESOURCES WANAGEMENT ›› 2023›› Issue (2): 50-56.doi: 10.13466/j.cnki.lyzygl.2023.02.007

• Scientific Research • Previous Articles     Next Articles

Biomass Distribution Characteristics and Carbon Measurement Parameters of Chinese Fir Plantation

LAN Xiao(), HAO Haikun, HUANG Kaiyong(), CHEN Qin, DAI Jun, CHENG Lin, CHEN Shichang   

  1. Guangxi Forestry Research Institute,Nanning 530002,China
  • Received:2022-12-23 Revised:2023-03-21 Online:2023-04-28 Published:2023-06-26

Abstract:

The purpose of this study is to explore the biomass distribution regularity of Chinese fir plantation and establish its biomass prediction model,and to provide a basis for scientific prediction and reasonable evaluation of its carbon sequestration capacity.In the study,the Chinese fir plantations of different ages and different site conditions in the typical cultivation area in Guangxi were selected as the research objects,the characteristics of rhizome ratio,wood basic density,carbon content,biomass conversion and expansion factor were analyzed by means of field biomass survey and indoor measurement.The results showed that the stem biomass of Chinese fir at different ages was the highest (40.00%~67.40%),followed by the root (14.70%~22.70%).The average rhizome ratio was 0.263,and the average wood basic density was 300.5 kg/m3.There was no significant difference in the fitting effect of different relative growth equations on stem,bark,branch,above-ground biomass,underground biomass and total biomass.The average carbon content ofall organs was 50.57%,which increased with the increase of forest age.The relationship between stem biomass and stand volume was the best with power function,and the relationship between above-ground biomass,underground biomass,total biomass and volume was best with hyperbolic model.

Key words: Chinese fir, biomass, distribution, carbon metering parameters

CLC Number: