NITROUS OXIDE AND CARBON DIOXIDE EMISSIONS FROM AGRICULTURAL SOIL AMENDED WITH DIFFERENT TYPES OF BIOCHAR AT THREE TEMPERATURES
NITROUS OXIDE AND CARBON DIOXIDE EMISSIONS FROM AGRICULTURAL SOIL AMENDED WITH DIFFERENT TYPES OF BIOCHAR AT THREE TEMPERATURES
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DOI：
10.3107/jesss.8.22
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Ngoc Van Hoang;M. Maeda
中科院分区：
文献类型：
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作者：
Ngoc Van Hoang;M. Maeda
一项实验室实验研究调查了在三种温度下不同咖啡废物生物炭材料对越南中部农业土壤中氧化亚氮（n2o）和二氧化碳（CO 2）排放的影响。用2%普通生物炭、2%功能性生物炭（吸附no3 -N的能力为20 g N kg -1）或不添加改性土壤，调整土壤持水量为60%，加入100 mg N- no3 kg -1干燥土壤，在25℃、30℃或35℃条件下好氧培养21天。分别在第1、3、5、7、14和21天测量n2o和co2排放量。结果表明：与功能生物炭相比，普通生物炭的co2排放量增加，而n2o排放量减少；在25℃时，生物炭对n2o和CO 2排放的影响为中性或正效应。在35℃时，与对照相比，生物炭修正减少了n2和CO 2的排放。不同生物炭处理的氮氧化物和二氧化碳排放量差异不大。此外，随着温度的升高，温度与n2o和CO 2排放量与非生物炭处理呈正相关，与生物炭处理呈负相关。这是因为温度可能会影响微生物过程的速率，介导呼吸和反硝化作用以及土壤-生物炭混合物对氮的动员
A laboratory experimental study was conducted to investigate the effects of different coffee waste biochar materials at three temperatures on nitrous oxide (N 2 O) and carbon dioxide (CO 2 ) emissions from agricultural soil in Central Vietnam. Soil amended with 2% normal biochar, 2% functional biochar (with a high NO 3 -N adsorption capacity of 20 g N kg -1 ) or no addition was adjusted at 60% water holding capacity, conditioned with 100 mg N-NO 3 kg -1 dried-soil and aerobically incubated at 25 o C, 30 o C or 35 o C for 21 days. N 2 O and CO 2 emissions were measured on days 1, 3, 5, 7, 14 and 21. Results showed that the addition of normal biochar caused more CO 2 emission but less N 2 O emission compared to the functional biochar application. At 25 o C, biochar amendment had a neutral or positive effect on N 2 O and CO 2 emissions. At 35 C, biochar amendment reduced N 2 O and CO 2 emissions compared to the control. However, there was little difference in N 2 O and CO 2 emissions among biochar treatments. In addition, with increasing temperature, a positive correlation between temperature and N 2 O and CO 2 emissions with the non-biochar amendment and a negative correlation between temperature and N 2 O with the biochar treatments were observed. This is because temperature probably affects the rate of microbial processes mediating respiration and denitrification and the soil-biochar mixture’s mobilization of N