摘要
为了解庐山土壤黑碳(BC)的分布特征及其影响因素,于2018年和2019年在黄山松林、人工扁柏林、次生灌草丛、常绿-落叶阔叶混交林、常绿阔叶林的典型样地采集土壤剖面样品共计56个。采用重铬酸盐氧化法(BCcr)和热氧化法(BCcto)测定土壤黑碳含量,同时测定土壤总有机碳(TOC)含量。结果表明:庐山土壤BCcr含量在1.05-19.86g·kg-1之间,平均值5.74g·kg-1;BCcto含量在0.42-4.50g·kg-1之间,平均值1.90g·kg-1;TOC含量在1.87-84.24g·kg-1之间,平均值为26.94g·kg-1。土壤黑碳含量随土层深度增加而降低,BC/TOC比值随土层深度增加而增大。BCcr与TOC之间存在显著的相关性(P<0.01)。采用BC/TOC比值法对黑碳判源,结果表明生物质燃烧为庐山土壤黑碳主要来源。
With the purpose of understanding the distribution characteristics and influencing factors of soil black carbon in Lushan mountain,we collected a total of 56 soil profile samples in the typical plots of Pinus taiwanensis Hayata,planted forest of Chamaecyparis obtusa(Sieb.et Zucc.)Endl.,secondary shrub-grassland,deciduous and evergreen broadleaved forest,evergreen broad-leaf forest in 2018 and 2019.The contents of black carbon in soil were determined by bichromate oxidation(BCcr)and thermal oxidation(BCcto),and soil total organic carbon(TOC)content was also determined.The results showed that:BCcr content in Lushan mountain ranged from 1.05 to 19.86 g·kg^(-1),with an average of 5.74 g·kg^(-1).BCcto content ranged from 0.42 to 4.50 g·kg^(-1),with an average of 1.90 g·kg^(-1),and TOC content ranged from 1.87 to 84.24 g·kg^(-1),with an average of 26.94 g·kg^(-1).The content of black carbon decreased with the increase of soil depth.Black carbon was enriched in humus layer.The ratio of BC/TOC increases with the increase of soil depth.There was a significant correlation between BCcr and TOC(P<0.01).The BC/TOC ratio method was used to identify the source of black carbon.The results showed that the main source of black carbon in Lushan mountain was biomass combustion.
作者
崔梦凡
汪青
封伟豪
张平究
李茂蝶
刘小佳
CUI Meng-fan;WANG Qing;FENG Wei-hao;ZHANG Ping-jiu;LI Mao-die;LIU Xiao-jia(School of Geography and Tourism,Anhui Normal University,Wuhu 241003,China;Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin,Anhui Province,Wuhu 241003,China)
出处
《安徽师范大学学报（自然科学版）》
2022年第2期154-159,共6页
Journal of Anhui Normal University(Natural Science)
基金
安徽省自然科学基金项目(1608085QD84)
安徽师范大学博士科研启动基金项目(2018XJJ42).
关键词
庐山
土壤黑碳
分布特征
垂直迁移
Lushan mountain
soil black carbon
distribution characteristics
vertical migration
作者简介
崔梦凡(1997—),女,河南洛阳市人,硕士研究生;通讯作者:汪青(1982—),男,安徽泾县人,博士,副教授,主要研究方向为土壤黑碳的生物地球化学过程.
