摘要
本研究以北部湾茅岭江河口无瓣海桑、桐花树、茳芏盐沼、光滩为研究对象,分析0~60 cm土壤有机碳垂直与水平分布特征,并探讨潮沟对土壤有机碳空间分布格局的影响。结果表明:0~60 cm土壤有机碳含量为6.12~51.06 g/kg[平均值为(28.41±8.80)g/kg]。其中无瓣海桑土壤有机碳含量最高,含量为14.30~78.30 g/kg[平均值为(37.94±6.46)g/kg];桐花树次之;光滩最低,含量为3.50~36.10 g/kg[平均值为(9.42±3.64)g/kg]。垂直方向上各土层深度有机碳平均含量为无瓣海桑>桐花树>茳芏盐沼>光滩,无瓣海桑与桐花树有机碳含量最大值出现在40~60 cm,茳芏盐沼和光滩出现在0~10 cm。潮沟作为纵向与横向水文连通的载体,是影响红树林土壤有机碳分布的重要因子。从林内到林缘,无瓣海桑土壤有机碳含量整体呈现逐渐减少的特点。
In this study,the vertical and horizontal distribution characteristics of 0-60 cm soil organic carbon were analyzed in the Maoling River estuary of Beibu Gulf,where Sonneratia apetala,Aegiceras corniculatum,Cyperus malaccensis,and bare flat were studied,The influence of tidal creek on the spatial distribution pattern of soil organic carbon was also explored.The results showed that the soil organic carbon content of 0-60 cm was 6.12-51.06 g/kg[mean value(28.41±8.80)g/kg].The highest soil organic carbon content was Sonneratia apetala,which ranged from 14.30-78.30 g/kg[mean value(37.94±6.46)g/kg],followed by Aegiceras corniculatum,and the smallest in bare flat(3.50-36.10)g/kg,with a mean value of(9.42±3.64)g/kg.The average soil organic carbon content in the vertical direction was Sonneratia apetala>Aegiceras corniculatum>Cyperus malaccensis>bare flat.The maximum values of organic carbon content were found at 40-60 cm for Sonneratia apetala and Aegiceras corniculatum,and at 0-10 cm for Cyperus malaccensis and bare flat.From the forest interior to the forest edge,the overall organic carbon content of Sonneratia apetala soil showed a gradual decrease.Within the study area,tidal channel flume is an important factor influencing the distribution of organic carbon in mangrove soils.
作者
林俊良
田义超
张亚丽
白小梅
张强
陶进
杨芸珍
杨永伟
LIN Junliang;TIAN Yichao;ZHANG Yali;BAI Xiaomei;ZHANG Qiang;TAO Jin;YANG Yunzhen;YANG Yongwei(School of Resources and Environment,Beibu Gulf University,Qinzhou 535011,China;Key Laboratory of Marine Geographic Information Resources Development and University,Qinzhou 535011,China)
出处
《海洋环境科学》
CAS
CSCD
北大核心
2024年第3期339-347,共9页
Marine Environmental Science
基金
国家自然科学基金项目(42261024)
广西高校中青年教师科研基础能力提升项目(2022KY0412)
广西林业科技推广示范工程(桂林科研[2022]4号)
广西高校人文社科重点研究基地重大项目(JDZD202214)。
关键词
红树林湿地
土壤有机碳
空间分布
北部湾茅岭江河口
mangrove wetland
soil organic carbon
spatial distribution
Maoling River estuary of Beibu Gulf
