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生物炭对土CH4、N2O排放的影响
引用本文:周凤,许晨阳,王月玲,林云,王强,张彤彤,耿增超.生物炭对土CH4、N2O排放的影响[J].环境科学,2017,38(9):3831-3839.
作者姓名:周凤  许晨阳  王月玲  林云  王强  张彤彤  耿增超
作者单位:西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100
基金项目:杨凌示范区科技计划项目(2015SF-03)
摘    要:为了探讨生物炭对土CH4、N2O排放的影响,采用田间小区试验,测定了生物炭不同添加量(0、20、40、60、80 t·hm-2)下冬小麦田CH4、N2O的吸收/排放通量、小麦产量、土壤有机碳、土壤含水率及不同土层土壤温度.结果表明,CH4、N2O的吸收/排放通量随生育期不同变化明显.添加生物炭后,CH4累积吸收量增加了12.88%~71.61%,当添加量≥ 40 t·hm-2时,增"汇"作用达到显著水平,且添加量为40 t·hm-2时CH4累积吸收量最高;N2O累积排放量和全球增温潜势与对照相比没有显著差异;温室气体强度降低了13.24%~22.14%.添加生物炭提高了冬小麦产量,增产幅度为1.72%~32.19%,当添加量 ≥ 40 t·hm-2时,麦田增产效果达到显著水平,40 t·hm-2生物炭为麦田增产的最适添加量.同时,添加生物炭显著提高了土壤有机碳和土壤含水率,与对照相比,分别增加了1.42~2.69倍、7.08%~11.96%.综合来看,试验土表现为CH4汇和N2O源的功能,40 t·hm-2是其适宜的生物炭添加量.

关 键 词:生物炭  CH4吸收  N2O排放  全球增温潜势  温室气体强度
收稿时间:2016/12/24 0:00:00
修稿时间:2017/4/5 0:00:00

Effect of Biochar on CH4 and N2O Emissions from Lou Soil
ZHOU Feng,XU Chen-yang,WANG Yue-ling,LIN Yun,WANG Qiang,ZHANG Tong-tong and GENG Zeng-chao.Effect of Biochar on CH4 and N2O Emissions from Lou Soil[J].Chinese Journal of Environmental Science,2017,38(9):3831-3839.
Authors:ZHOU Feng  XU Chen-yang  WANG Yue-ling  LIN Yun  WANG Qiang  ZHANG Tong-tong and GENG Zeng-chao
Institution:Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China and Key Laboratory of Plant Nutrition and Agrienvironment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
Abstract:
Keywords:biochar  CH4 uptake  N2O emission  global warming potential  greenhouse gas intensity
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