| 不同生物质炭输入水平下黄绵土N_2O日排放特性 |
| |
| 引用本文： | 宋敏,齐鹏,蔡立群,张仁陟,Stephen Yeboah,武均,王旭燕,潘占东.不同生物质炭输入水平下黄绵土N_2O日排放特性[J].干旱地区农业研究,2017,35(4):137-144. |
| |
| 作者姓名： | 宋敏 齐鹏 蔡立群 张仁陟 Stephen Yeboah 武均 王旭燕 潘占东 |
| |
| 作者单位： | 1. 甘肃农业大学资源与环境学院,甘肃兰州730070;甘肃省干旱生境作物学重点实验室,甘肃兰州730070;甘肃省节水农业工程技术研究中心,甘肃兰州730070;广东医科大学,广东东莞523808;2. 甘肃农业大学资源与环境学院,甘肃兰州730070;甘肃省干旱生境作物学重点实验室,甘肃兰州730070;甘肃省节水农业工程技术研究中心,甘肃兰州730070;3. 甘肃农业大学资源与环境学院,甘肃兰州730070;甘肃省干旱生境作物学重点实验室,甘肃兰州730070;甘肃省节水农业工程技术研究中心,甘肃兰州730070;CSIR-Crops Research Institute,Kumasi,999064,Ghana |
| |
| 基金项目： | 甘肃省自然科学基金,省部共建国家重点实验室培育基地开放基金课题 |
| |
| 摘 要： | 在陇中黄土高原干旱半干旱区,采用小区定位试验与室内盆栽模拟试验相结合的方法,对不同生物质炭输入水平下旱作黄绵土N_2O的日排放通量及其影响因子进行连续观测,并确定1天中不同生物质炭处理水平下的最佳观测时间。结果表明:6个生物质炭输入水平处理下(0、10、20、30、40、50 t·hm~(-2)),旱作黄绵土全天表现为N_2O的排放源;无生物质炭添加处理的N_2O排放通量均显著高于其他各处理,随输入水平增加呈U型变化规律,当生物质炭输入水平为30 t·hm~(-2)时,更有利于N_2O气体的增汇减排;各处理N_2O日总排放通量均在白天所占比例最高;温度是环境因子相对稳定条件下N_2O气体排放的主要影响因子,N_2O的排放与地表温度及10 cm土层地温呈不同程度的正相关关系;10 cm土层地温与生物质炭输入量呈显著正相关关系;N_2O气体的最佳同期观测时间为8∶00—9∶00。
|
| 关 键 词： | 黄绵土 生物质炭 N2O排放 |
Diurnal variations of N2O gases emission in loessial soil under biochar application |
| |
| SONG Min,QI Peng,CAI Li-qun,ZHANG Ren-zhi,Stephen Yeboah,WU Jun,WANG Xu-yan,PAN Zhan-dong.Diurnal variations of N2O gases emission in loessial soil under biochar application[J].Agricultural Research in the Arid Areas,2017,35(4):137-144. |
| |
| Authors: | SONG Min QI Peng CAI Li-qun ZHANG Ren-zhi Stephen Yeboah WU Jun WANG Xu-yan PAN Zhan-dong |
| |
| Affiliation: | College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China; Guangdong Medical University, Dongguan, Guangdong 523808, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China; CSIR-Crops Research Institute, Kumasi, 999064, Ghana,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China and College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China; Gansu Province Research Center of Water-saving Agricultural Engineering Technology, Lanzhou, Gansu 730070, China |
| |
| Abstract: | Biochar is a carbon-rich solid product by heating of biomass in an oxygen-limited environment.Biochar application is supposed to have the potential for greenhouse gas mitigation.The aim of this study was to determine the effects of biochar on nitrous oxide (N2O) emissions.The treatments consisted of six different biochar levels,including TI (0 t·hm-2),BT1 (10 t·hm-2),BT2 (20 t·hm-2),BT3 (30 t·hm-2),BT4 (40 t·hm-2),and BT5 (50 t·hm-2),with a randomized complete block design with three replieatiom.Soil moisture and temperature were measured as well as N2O.The results showed that the N2O fluxes had significant difference in diurnal variations among biochar treatments.The loessial soil is a source of N2O emission,and similarly the the loessial soil of the other biochar treatments.The N2O flux emission of soil without biochar input was significantly higher than other treatments.With the increase in the application rate,the accumulate flux emission of N2O showed a "U" type change pattern,and the rate of 30 t· hm-2 showed the better depression effect on N2O gas emission.The total daily emission fluxes of N2O in each treatment were the highest in the daytime.The combination of water and heat caused by the biochar might be the main cause of the different of the whole day N2O gas emission.Temperature is the main influence factor of N2O gas emission under the condition of relatively stable environment.The soil temperature in 10 cm depth increased with increasing the application rate of biochar.The optimal observation duration of the N2O gas is 8 a.m.to 9 a.m. |
| |
| Keywords: | loessial soil biochar N2O emission |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《干旱地区农业研究》浏览原始摘要信息 |
|
点击此处可从《干旱地区农业研究》下载全文 |
|
