Journal of Tropical Oceanography ›› 2025, Vol. 44 ›› Issue (6): 155-164.doi: 10.11978/2025013CSTR: 32234.14.2025013

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Forest biomass and carbon storage of different mangrove communities in Shenzhen, China

SU Chunqing(), GAO Yuhui, LUO Xinwu, HAN Mengmeng, GONG Yanzhang, ZHENG Weiguo()   

  1. Guangdong Wenke Green Technology Corp., Ltd., Guangdong Landscape and Ecological Restoration Engineering Technology Research Center, Shenzhen 518111, China
  • Received:2025-01-22 Revised:2025-03-06 Online:2025-11-10 Published:2025-12-03
  • Contact: ZHENG Weiguo. email:
  • Supported by:
    Shenzhen Municipal Science and Technology Plan Project(KCXFZ202002011006491)

Abstract:

To explore the community characteristics and carbon accumulation function of mangroves under different coastal conditions in Shenzhen, we measured plant growth indices, soil organic carbon, and plant carbon content in three mangrove wetlands: Bao'an Xiwan Mangrove, Dapeng Luzui Mountain Mangrove, and Futian Mangrove National Nature Reserve. The biomass and soil carbon density of different communities were compared. The results showed that Kandelia obovata, Sonneratia caseolaris, and Sonneratia apetala were the constructive, dominant or associated species in the three mangrove communities of Shenzhen. The vegetation carbon density was highest in the K. obovata (88.03 t·hm-2) and S. caseolaris+S. apetala (233.56 t·hm-2) communities in the Xiwan Mangrove. The Futian Mangrove Reserve exhibited the highest soil organic carbon and soil carbon density (63.10 g·kg-1, 134.65 t·hm-2), though its soil water content and bulk density were significantly lower than the other two sites. The Dapeng Luzui Mangrove community showed the richest species composition and highest soil bulk density, but had relatively smaller plant height, DBH, and biomass. Among all communities, the S. apetala community displayed the greatest tree height, DBH, and vegetation carbon density, yet the lowest soil organic carbon content and soil carbon density. The soil organic carbon content in Futian’s natural K. obovata stand was higher than in other native and exotic mangroves. Among nine mangrove species, K. obovata showed the highest organic carbon content in stems, leaves, and fruits, while Acanthus ilicifolius had the lowest. In terms of carbon content in different plant organs, K. obovata and Bruguiera gymnorrhiza had the highest carbon content in fruits, whereas other mangrove species had higher carbon content in stems and leaves.

Key words: mangrove, biomass, soil carbon density, plant carbon content, Shenzhen

CLC Number: 

  • S718.54