植物标志物在森林土壤碳循环研究中的应用  

APPLICATION OF PLANT BIOMARKERS TO STUDYING CARBON CYCLING IN FOREST SOIL SYSTEMS

作　　者：万晓华[1,2] 黄志群[1,2] 

机构地区：[1]湿润亚热带山地生态国家重点实验室培育基地,福州350007 [2]福建师范大学地理科学学院,福州350007

出　　处：《土壤学报》2013年第6期1207-1215,共9页Acta Pedologica Sinica

基　　金：福建师范大学"闽江学者"启动经费;教育部新世纪优秀人才支持计划(DB-168);福建省杰出青年基金项目(2060203)资助

摘　　要：森林土壤有机质的稳定机制对于森林长期碳吸存研究具有重要意义。土壤中难分解的生物大分子构成了土壤稳定性有机质库。稳定性土壤碳库主要来自于植物、动物、真菌和细菌,每一种土壤有机质的来源均有具体的天然生物标志物(biomarker)。本文回顾了近20年来植物标志物在土壤碳循环研究中的进展,概述了植物标志物在推断土壤有机质的植物来源以及有机质的分解程度方面的应用,并介绍了植物标志物的稳定性同位素分析在定量估算土壤有机质周转时间上的应用。本文还详细介绍了土壤中植物标志物的化学分析方法,为今后我国应用植物标志物开展土壤有机质研究提供参考。Soil organic matter （SOM） plays a vital role in long-term carbon sequestration in forest soil systems. A stable SOM pool consists of various recalcitrant biomacromolecules which mainly come from plants, animals, fungi and bacteria. These plant-or microbe-derived organic matters in the soil have their own source-specific natural biomarkers. A review is presented here of the advancement in the research on application of plant biomarkers to the study on soil carbon recycling in the past two decades, briefing on application of plant biomarkers to determination of plant sources and decom- position degree of SOM, and introducing application of stable isotopes of plant biomarkers to quantitatively estimating cyc- ling time of SOM. Besides, the review also introduces in detail methods for chemical analysis of plant biomarkers in the soil. Therefore, the review may serve as reference for future studies on application of plant biomarkers to researches on SOM in China.

关 键 词：植物生物标志物 木质素 脂类物质 土壤有机质 碳同位素 气相色谱-质谱联用仪 

分 类 号：S714.3[农业科学—林学]