典型红树林湿地土壤有机碳组分特征及影响因素  

Characteristics and Influencing Factors of Soil Organic Carbon Components in Typical Mangrove Wetlands

作　　者：杨泽宇 肖石红 马姣娇 高常军[2] 魏龙[2] 李佳鸿 何东进[3,4] YANG Zeyu;XIAO Shihong;MA Jiaojiao;GAO Changjun;WEI Long;LI Jiahong;HE Dongjin(College of Mycology and Ecology,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002,P.R.China;Guangdong Provincial Key Laboratory of Forest Cultivation,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou Guangdong 510520,P.R.China;College of Forestry,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002,P.R.China;Fujian Agricultural Vocational and Technical College,Fuzhou Fujian 350303,P.R.China)

机构地区：[1]福建农林大学菌草与生态学院,福建福州350002 [2]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东广州510520 [3]福建农林大学林学院,福建福州350002 [4]福建农业职业技术学院,福建福州350303

出　　处：《西部林业科学》2025年第1期126-134,共9页Journal of West China Forestry Science

基　　金：广东省林业科技项目(2023KYXM09)。

摘　　要：为探讨易氧化有机碳、可溶性有机碳、微生物生物量碳与土壤有机碳和其他理化指标间关系,以广东珠海淇澳岛内典型红树林群落(秋茄、桐花树、银叶树、8 a无瓣海桑、13 a无瓣海桑、18 a无瓣海桑、无瓣海桑+木榄)为研究对象,测定其0~40 cm土层的土壤基本理化性质、有机碳及组分含量,分析典型红树林群落土壤有机碳及组分的主要影响因素。结果显示:(1)7个红树林群落土壤容重均值为0.57~0.87 g·cm^(-3),pH值均值为5.30~6.97,土壤全氮、全磷、全钾含量均值分别为1.05~2.43、0.38~1.26、14.83~22.73 g·kg^(-1)。7个红树林群落土壤有机碳含量均值为17.18~42.71 g·kg^(-1),易氧化有机碳、可溶性有机碳、微生物生物量碳含量均值分别为0.54~2.06 g·kg^(-1)、43.33~125.33 mg·kg^(-1)、243.78~701.40 mg·kg^(-1)。(2)土壤有机碳与可溶性有机碳,可溶性有机碳与微生物生物量碳含量均呈极显著正相关(P<0.01);土壤有机碳与微生物生物量碳含量呈显著正相关(P<0.05);土壤有机碳、可溶性有机碳、微生物生物量碳含量均与土壤易氧化有机碳含量呈极显著负相关(P<0.01)。(3)土壤有机碳及组分的主要影响因素是群落类型、地理位置、根系投入,不同群落类型下土壤理化性质的差异也会对土壤有机碳及组分产生直接或间接影响,土壤有机碳不同组分间也相互影响。To explore the relationship between easily soil readily oxidized organic carbon,dissolved organic carbon,microbial biomass and soil organic carbon,other physicochemical indicatorsin mangroves,the basic physical and chemical properties of the 0-40 cm soil,as well as the contents of organic carbon and its components in typical mangrove communities(Kandelia obovata,Aegiceras corniculatum,Heritiera littoralis,Sonneratia apetala of 8 years,Sonneratia apetala of 13 years,Sonneratia apetala of 18 years,and Sonneratia apetala+Bruguiera gymnorrhiza)were determined in Qi’ao Island,Zhuhai,Guangdong Province.The principal influencing factors of soil organic carbon and its components in typical mangrove communities were analyzed.The results indicated:(1)The average soil bulk density of the seven mangrove communities was 0.57-0.87 g·cm^(-3).The average pH value was 5.30-6.97.And the average soil total nitrogen,total phosphorus and total potassium contents were 1.05-2.43 g·kg^(-1),0.38-1.26 g·kg^(-1),and 14.83-22.73 g·kg^(-)1,respectively.The average soil organic carbon content of the seven mangrove communities ranged from 17.18 g·kg^(-1) to 42.71 g·kg^(-1).And the average contents of soil readily oxidized organic carbon,dissolvable organic carbon,and microbial biomass carbon were 0.54-2.06 g·kg^(-1),43.33-125.33 mg·kg^(-1),and 243.78-701.40 mg·kg^(-1),respectively.(2)The soil organic carbon is extremely significantly positively correlated with the dissolved organic carbon(P<0.01),and the dissolved organic carbon is extremely significantly positively correlated with the microbial biomass carbon content(P<0.01);the soil organic carbon is significantly positively correlated with the microbial biomass carbon content(P<0.05);the soil organic carbon,dissolved organic carbon,and microbial biomass carbon content are all extremely significantly negatively correlated with the content of easily oxidizable organic carbon in the soil(P<0.01).(3)The main influencing factors of soil organic carbon and its components are community

关 键 词：红树林 土壤有机碳 有机碳组分 影响因素 

分 类 号：S714[农业科学—林学]