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浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2012, Vol. 38 Issue (3): 329-335    DOI: 10.3785/j.issn.1008-9209.2012.03.014
农业科学     
生物质炭在土壤中的降解特征
章明奎1， 顾国平2， 王阳3
1.浙江大学 环境与资源学院 浙江省亚热带土壤与植物营养重点研究实验室，浙江 杭州 310058；
2.绍兴市农业科学院，浙江 绍兴 312003；3.温州科技职业学院，浙江 温州325006
Degradation characteristic of different biochar materials in soil environments.
ZHANG Mingkui1, GU Guoping2, WANG Yang3
1. Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China； 2. Shaoxing Academy of Agricultural Sciences, Shaoxing, Zhejiang 312003, China; 3. Wenzhou Vocational College of Science and Technology, Wenzhou, Zhejiang 325006, China
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摘要： 添加生物质炭至土壤中进行室内培养试验，模拟研究生物质炭在土壤环境中的降解特征。结果表明：生物质炭在土壤环境中有较高的稳定性，其降解的半衰期约为玉米秸秆等普通植物生物质的20多倍，但生物质炭在土壤中的稳定性低于活性炭；生物质炭的稳定性与其本身的化学组成有关，随含碳量的增加而增加；淹水条件比非淹水条件下生物质炭具有更高的稳定性，说明在水田中施用生物质炭更有利用于土壤碳的固定，具更高的增碳效果；由生物质炭引入的黑碳物质在土壤中随培养时间的延长，其颗粒逐渐变小，由轻组分逐渐向重组分转化。
Abstract: An incubation experiment over three years was conducted to investigate  the effects of water regimes (unsaturated and alternating saturatedunsaturated conditions) and differences in black carbon (BC) materials, produced by carbonizing corn residues and bamboo at different temperatures (300, 450, and 600 ℃ ) on biocharC degradation. Changes of residual biochar materials in the incubated soil under different conditions were characterized. The results showed that the biochar materials in the soil were very stable. The halflife time of the biochar materials was about 20 times higher than that of corn stalk material, but it was lower than that of activated carbon. The stability of the biochar materials in the soil was related to the chemical compositions  of the biochar materials, and increased with increasing C contents in the added materials. The stability was higher under the alternating watersaturatedunsaturated conditions than under waterunsaturated condition, which suggested that paddy soil had more benefit condition to fixation of carbon sequestration. As duration of the added biochar in the soil increased, distribution of black carbon from the biochar materials in the soil was gradually transformed from coarse particle into fine one, and from light fractions into heavy ones. These results are of practical value to those considering biochar as a tool for atmospheric C sequestration.
出版日期: 2012-05-24
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章明奎
顾国平
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引用本文:

章明奎， 顾国平， 王阳. 生物质炭在土壤中的降解特征[J]. 浙江大学学报(农业与生命科学版), 2012, 38(3): 329-335.

ZHANG Mingkui, GU Guoping, WANG Yang. Degradation characteristic of different biochar materials in soil environments.. , 2012, 38(3): 329-335.

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http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2012.03.014    或    http://www.zjujournals.com/agr/CN/Y2012/V38/I3/329

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