河流水体中碳研究进展  

Research Progress on Carbon in River Waters

作　　者：丁冰岚 李新举[1] 姜德娟[2,3] DING Binglan;LI Xinju;JIANG Dejuan(College of Resources and Environment,Shandong Agricultural University,Tai an 271000,China;Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai 264003,China;Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China)

机构地区：[1]山东农业大学资源与环境学院,山东泰安271000 [2]中国科学院海岸带环境过程与生态修复重点实验室,山东烟台264003 [3]中国科学院烟台海岸带研究所,山东烟台264003

出　　处：《人民珠江》2020年第11期37-47,共11页Pearl River

基　　金：国家自然科学基金项目(41671473)。

摘　　要：河流是陆地碳向海洋和大气传输的重要通道,因此开展河流中碳的研究对理解全球碳循环具有重要意义。对河流水体中碳的研究进展进行了综述,主要包括:①河流碳含量时空分布、来源及影响因素;②河流碳来源识别方法;③河流碳通量估算方法;④河流二氧化碳分压p CO 2分布及影响因素。因所处气候条件及流经区域等的不同,河流中碳的含量、来源及通量存在明显差异;河流碳来源的识别方法主要包括碳氮比值、碳同位素、荧光光谱法和生物标志物法等,这些方法均有各自的优缺点,因此综合多种方法的应用通常可提高源解析结果的准确性;河流碳通量采用浓度与径流量的乘积进行估算,后人则根据当地河流特征对该方法进行了改进;在由陆地向海洋输送的过程中,河流碳也会以CO2的方式释放到大气中,因此了解河流pCO2分布对河流碳的生物地球化学循环过程研究具有重要意义。Rivers are an important channel for the transfer of terrestrial carbon to the ocean and atmosphere.Therefore,the study of river carbon is of great significance for understanding the global carbon cycle.This paper reviews the research progress of carbon in river water,including:Spatial and temporal distribution,sources and influencing factors of river carbon content;River carbon source identification method;River carbon flux estimation method;Distribution and influencing factors of river p CO 2.Due to the different climatic conditions and flowing regions,carbon content,source and flux in rivers are obviously different.The identification methods of river carbon sources mainly include C/N ratio,carbon isotope,fluorescence spectrometry and biomarker,which have their own advantages and disadvantages.Therefore,the comprehensive application of multiple methods can improve the accuracy of source apportionment analysis results.River carbon flux is estimated by the product of river concentration and runoff,which is improved based on local river characteristics by later researcher.In the process of transport from land to sea,river carbon will also be released into the atmosphere in the form of CO 2.Therefore,understanding the distribution of river p CO 2 is of great significance for the study of biogeochemical cycle of river carbon.

关 键 词：碳 来源 通量 PCO2 河流 

分 类 号：P593[天文地球—地球化学]