应用生态学报2017，Vol.28Issue(7)：2379-2388,10.DOI:10.13287/j.1001-9332.201707.034
基于稳定碳同位素技术研究大气CO2浓度升高对植物-土壤系统碳循环的影响
Investigation on effects of elevated atmospheric CO2 concentration on plant-soil system carbon cycling: Based on stable isotopic technique
摘要
Abstract
Elevated atmospheric CO2 affects plant photosynthesis process and biomass accumulation,furthermore alters the distribution of photosynthetic carbon (C) above-and below-ground.The formation and turnover of soil organic carbon (SOC) depends on the input of photosynthetic C,so the change of plant physiology and metabolism caused by increasing CO2 concentration will further affect the balance of SOC pool.Therefore,stable isotope 13C technique is powerful for clarifying the influence of elevated atmospheric CO2 on C cycling in plant-soil system,including the distribution of photosynthetic C among plant organs,and the transformation and accumulation of photosynthetic C in soil.This review summarized research focused on the effects of elevated atmospheric CO2 on C cycling in terrestrial ecosystems based on 13C natural abundance or 13C tracing technique,including:1) isotopic fractionation effect in plant photosynthesis;2) the distribution of photosynthetic C in plant organs;3) the transformation and stabilization of photosynthetic C in SOC driven by microbial process.Clarifying the above processes and controlling mechanisms is essential to predict longterm influence of elevated CO2 on C cycling and evaluate the source-sink function of SOC in terrestrial ecosystems.关键词
CO2浓度升高/稳定同位素示踪/植物光合作用/土壤碳循环Key words
elevated atmospheric CO2 concentration/stable isotope tracing technique/plant photosynthesis/soil carbon cycling引用本文复制引用
张蕊,赵钰,何红波,张旭东..基于稳定碳同位素技术研究大气CO2浓度升高对植物-土壤系统碳循环的影响[J].应用生态学报,2017,28(7):2379-2388,10.基金项目
本文由国家自然科学基金重点项目(4163086)、中国科学院战略性先导科技专项B(XDB15040200)和中国科学院交叉创新团队计划项目资助 This work was supported by the Natural Science Foundation of China (4163086),the Strategic Priority Research Program B of the Chinese Academy of Sciences (XDB15040200) and the Interdisciplinary Innovation Team of the Chinese Academy of Sciences. （4163086）
