应用生态学报2018，Vol.29Issue(1)：314-320,7.DOI:10.13287/j.1001-9332.201801.024
生物炭对土壤有机碳矿化的激发效应及其机理研究进展
Priming effect of biochar on the minerialization of native soil organic carbon and the mechanisms: A review
摘要
Abstract
In recent years,studies on carbon sequestration of biochar in soil has been in spotlight owing to the specific characteristics of biochar such as strong carbon stability and well developed pore structure.However,whether biochar will ultimately increase soil carbon storage or promote soil carbon emissions when applied into the soil? This question remains controversial in current academic circles.Further research is required on priming effect of biochar on mineralization of native soil organic carbon and its mechanisms.Based on the analysis of biochar characteristics,such as its carbon composition and stability,pore structure and surface morphology,research progress on the priming effect of biochar on the decomposition of native soil organic carbon was reviewed in this paper.Furthermore,possible mechanisms of both positive and negative priming effect,that is promoting and suppressing the mineralization,were put forward.Positive priming effect is mainly due to the promotion of soil microbial activity caused by biochar,the preferential mineralization of easily decomposed components in biochar,and the co-metabolism of soil microbes.While negative priming effect is mainly based on the encapsulation and adsorption protection of soil organic matter due to the internal pore structure and the external surface of biochar.Other potential reasons for negative priming effect can be the stabilization resulted from the formation of organic-inorganic complex promoted by biochar in the soil,and the inhibition of activity of soil microbes and its enzymes by biochar.Finally,future research directions were proposed in order to provide theoretical basis for the application of biochar in soil carbon sequestration.关键词
生物炭/土壤有机碳/激发效应/矿化作用/固碳Key words
biochar/soil organic carbon/priming effect/mineralization/carbon sequestration引用本文复制引用
陈颖,刘玉学,陈重军,吕豪豪,汪玉瑛,何莉莉,杨生茂..生物炭对土壤有机碳矿化的激发效应及其机理研究进展[J].应用生态学报,2018,29(1):314-320,7.基金项目
本文由国家自然科学基金项目(41701334)、浙江省自然科学基金项目(LY14D010005,LY16D010004)、浙江省重点研发计划项目(2015C03020)、国家公益性行业(农业)科研专项(201303095)和苏州市科技计划项目(SYN201411)资助 This work was supported by the National Natural Science Foundation of China (41701334),the Zhejiang Provincial Natural Science Foundation(LY14D010005,LY16D010004),the Zhejiang Provincial Key Research and Development Program (2015C03020),the Special Fund for Agro-scientific Research in the Public Interest of China (201303095) and the Suzhou Science & Technology Plan Project(SYN201411). （41701334）
