Biochar's stability and effect on the content, composition and turnover of soil organic carbon

被引：214
作者：
Han, Lanfang [1 ,2 ]
Sun, Ke [2 ]
Yang, Yan [2 ]
Xia, Xinghui [2 ]
Li, Fangbai [3 ]
Yang, Zhifeng [1 ]
Xing, Baoshan [4 ]
机构：
[1] Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangzhou 510006, Peoples R China
[2] Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China
[3] Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Publ Lab Environm Sci & Technol, Guangzhou 510650, Peoples R China
[4] Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA
来源：
GEODERMA | 2020年 / 364卷
基金：
中国博士后科学基金; 中国国家自然科学基金; 国家重点研发计划;
关键词：
Biochar; Stability; Organic carbon; Soil aggregate; Humic substance; MANURE-DERIVED BIOCHAR; BLACK CARBON; PYROLYSIS TEMPERATURE; MICROBIAL COMMUNITY; MOLECULAR-STRUCTURE; AGGREGATE STABILITY; AQUEOUS-SOLUTION; WATER-RETENTION; SLOW PYROLYSIS; AMENDED SOILS;
D O I：
10.1016/j.geoderma.2020.114184
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Extensive application of biochar to soil exerts a profound effect on organic carbon (OC) in soils. However, the impact of biochar on the content and composition of OC has not been comprehensively summarized. This review provided a detailed examination on the stability of biochar and its effect on the amount, composition and turnover of soil OC, with key limitations and issues recognized. The direct input of labile and stable OC of biochar to soil OC pool, and indirect effects of biochar on soil OC by affecting soil physicochemical and biological properties were discussed. Both low stability of biochar and biochar-Induced strong positive priming effect on OC mineralization were commonly observed in sandy soil added with biochar produced from manure at low temperature. The stable OC of biochar was composed of both aromatic OC and the OC fractions stabilized by soil minerals. Biochar mainly increased the formation of macro-aggregates, and this promotion was more intense for clayey soil added with manure-based low temperature-biochar. Additionally, potential influential mechanisms were proposed to explain the effect of biochar addition on amount and composition of humic substances in soils. This review will shed lights on the effect of biochar application on the amount, composition and turnover of native soil OC, and improve the understanding of the ecological effect of biochar on the soil functions.
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页数：17
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