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Mar Pollut Bull. 2019 Dec;149:110581. doi: 10.1016/j.marpolbul.2019.110581. Epub 2019 Sep 26.

Changes in mangrove community structures affecting sediment carbon content in Yingluo Bay of South China.

Author information

1
School of Management, Guangdong University of Technology, Guangzhou 510520, China; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. Electronic address: gdut_tony@163.com.
2
School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. Electronic address: eesgds@mail.sysu.edu.cn.
3
College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
4
Department of Geography, The University of Hong Kong, Hong Kong. Electronic address: mrpeart@hku.hk.
5
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China. Electronic address: zhangh73@wit.edu.cn.
6
Centre for Environmental Policy, Imperial College London, South Kensington, London, UK. Electronic address: minerva.singh07@imperial.ac.uk.

Abstract

This study aimed to assess how sediment organic carbon (SOC) dynamics were affected by mangrove community structures. Sediment attributes and community structures of the Avicennia marina, Aegiceras corniculatum, Rhizophora stylosa, and Bruguiera gymnorrhiza communities were analyzed, based upon field investigation in Yingluo Bay of South China. Aboveground biomass (AGB), belowground biomass (BGB) and tree height obviously increased with the self-thinning process, while basal area significantly decreased. The self-thinning exponent was 1.382 for AGB and 1.254 for BGB, conforming to the 4/3 self-thinning rule. However, self-thinning exponent for basal area was only 0.4866. SOC content non-linearly increased with the increase of AGB, BGB, and tree height. Mangrove-derived carbon increased through in situ organic material inputs with mangrove growth. The negative correlation between tree density and SOC content was not in line with the previous studies for planted mangroves. SOC dynamics of natural mangroves may be partially different from planted mangroves.

KEYWORDS:

Biomass; Community structure; Mangrove forest; Sediment carbon content; Self-thinning process; South China

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