主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2016, Vol. 32 ›› Issue (3): 95-101.doi: 10.3969/j.issn.1673-503X.2016.03.014

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Effects of biochar application on soil physical properties:a review

ZHAO Jian-kun1, LI Jiang-zhou2, DU Zhang-liu1, WANG Yi-ding1, ZHANG Qing-zhong1   

  1. 1. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Yuxi Branch of Yunnan Tobacco Company, Yuxi 653100, China
  • Received:2016-01-25 Revised:2016-03-30 Online:2016-06-30 Published:2016-06-30

Abstract: The biochar characteristics,e.g.,specific density,surface structures and pore structures may potentially affect soil physical properties.This paper summarized the current research advances about the effect of biochar amendment on soil physical properties with respect to soil aggregation,structure,hydraulic and thermal properties.In general,biochar application reduces the soil bulk density and improves soil pore structure.However,the effects of biochar on soil aggregation and soil hydraulic characteristics show some uncertainty.Biochar application can modify soil temperature variation and reduce soil thermal conductivity and surface albedo,but the relevant mechanisms remain unclear.Additionally,the potential mechanisms that may reveal the changes in soil physical properties induced by biochar addition in terms of biochar types,pyrolysis conditions and soil texture are analyzed in this study and perspectives in future studies are also presented.

Key words: Biochar, Soil structure, Hydraulic characteristics, Soil thermal properties

CLC Number: