Rock-Eval热分解法及其在土壤有机碳研究中的应用  

Rock-Eval thermal analysis method for soil organic carbon measurement-A review

作　　者：张延[1] 高燕 张旸 Gregorich Edward 李秀军[1] 陈学文[1] 张士秀[1] 梁爱珍[1] ZHANG Yan;GAO Yan;ZHANG Yang;GREGORICH Edward;LI Xiujun;CHEN Xuewen;ZHANG Shixiu;LIANG Aizhen(Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;University of Chinese Academy of Sciences,Beijing 100049,China;Ottawa Research and Development Centre,Central Experimental Farm,Agriculture and Agri-Food Canada,Ottawa,ON K1A 0C6,Canada)

机构地区：[1]中国科学院东北地理与农业生态研究所黑土区农业生态重点实验室,吉林长春130102 [2]中国科学院大学,北京100049 [3]加拿大农业与农业食品部渥太华研究中心,渥太华K1A 0C6

出　　处：《土壤与作物》2022年第3期282-289,共8页Soils and Crops

基　　金：国家自然科学基金(42101277,41877095);吉林省科技发展计划自然科学基金(YDZJ202101ZYTS011);吉林省科技发展计划“中青年科技创新领军人才及团队”(20200301022RQ);中国科学院黑土区农业生态重点实验室开放基金项目(2020ZKHT-06)。

摘　　要：土壤有机碳的稳定性影响土壤固碳潜力,如何提取土壤活性及稳定性碳组分用以定量表征土壤有机碳稳定性,是土壤固碳研究领域的关键科学问题。当前,提取土壤有机碳活性及稳定性组分的方法多样,包括物理、化学及生物手段,导致结果难以比较,同时存在耗时长、成本高及操作步骤繁琐等缺点。所以,亟需一种高效、可信度高且应用广泛的测定方法。对比分析不同热分解技术的优缺点,包括热裂解气相-质谱联用测定技术、热重分析技术、差示扫描量热分析技术及Rock-Eval(RE)热分解方法,普遍认为RE方法操作简单、耗时短、成本低、结果易于分析,可信度较高,可以很好地表征土壤有机碳稳定性,有利于土壤有机碳研究的横向对比。本文通过Citespace软件综述了RE方法在土壤学和有机碳研究中发展过程,梳理了其应用现状及进展。提出RE方法有助于通过建立不同土地利用方式、气候带以及不同土壤质地间活性及稳定性碳库的比较网络体系,完善我国土壤碳库监测系统。Soil organic carbon(SOC)sequestration potential is relevant to its stability.How to extract the labile and stable carbon fractions is essential to quantitatively characterize the SOC stability.At present,various methods,including physical,chemical and biological methods are being used to extract the labile and stable carbon fractions,however,it is difficult to compare the results generated from different methodologies.Meanwhile,those methods have disadvantages such as time-consuming,high cost,and complex operation process.Hence,it is urgent to seek an efficient and reliable method,which also can be widely applied in research areas.The present review compares different thermal analysis methods including Pyrolysis Gas Chromatography Mass Spectroscopy(PC/MS),Thermogravimetry(TG),Differential Scanning Calorimetry(DSC)and Rock-Eval(RE).RE method is the least time consuming with lowest cost,and can reflect SOC stability representatively and efficiently,which has been applied on the comparison across studies.Citespace is employed to assess the development of RE method and its application status.The RE method is useful to construct the SOC monitoring system in China by establishing a comparative network system to investigate labile and stable carbon pools under different land use patterns,climatic zones,and different soil textures.

关 键 词：土壤有机碳 热分解 ROCK-EVAL 活性及稳定性碳 

分 类 号：S151.95[农业科学—土壤学]