Responses of soil greenhouse gas emissions to different application rates of biochar in a subtropical Chinese chestnut plantation
Responses of soil greenhouse gas emissions to different application rates of biochar in a subtropical Chinese chestnut plantation
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亚热带板栗园土壤温室气体排放对不同生物炭施用量的响应
DOI：
10.1016/j.agrformet.2019.03.001
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发表时间：
2019-06
影响因子：
6.2
通讯作者：
Li Yongchun
中科院分区：
文献类型：
--
作者：
Lu Xinhua;Li Yongfu;Wang Hailong;Singh Bhupinder Pal;Hu Shuaidong;Luo Yu;Li Jianwu;Xiao Yongheng;Cai Xiaoqing;Li Yongchun
生物炭的应用被认为是减少土壤温室气体排放的有效措施。然而，不同生物炭施用量对人工林土壤温室气体排放的影响及其与生物炭引起的土壤环境因子变化的关系尚不清楚。研究了板栗人工林不同竹叶生物炭施用量对土壤温室气体排放的响应。通过为期两年的田间试验，确定了B0（对照）、B2、B5和B10处理下，生物炭施用量分别为0、2、5和10 t ha - 1时土壤温室气体排放和关键土壤性质随时间的变化。施用生物炭显著（P< 0.05）降低了土壤N2O排放量（从2.60 t ha - 1yr - 1减少到2.11 t ha - 1yr - 1），增加了土壤ch4吸收率（从3.13 t ha - 1yr - 1增加到4.22 t ha - 1yr - 1），但没有改变土壤co2排放量。随着生物炭施用量的增加，生物炭对土壤温室气体排放的抑制作用增强，第一年的抑制作用大于第二年。施用生物炭降低了土壤NH4+-N、NO3——N和水溶性有机氮（WSON）的浓度，提高了土壤水溶性有机碳（WSOC）和微生物生物量C （MBC）的浓度。各处理土壤温室气体排放与土壤温度呈极显著相关（P< 0.01），与土壤含水量无显著相关（P< 0.01）。仅在B0、B2和B5处理下，土壤co2和N2O排放量以及土壤ch4吸收量与WSOC浓度呈正相关（P< 0.05）。土壤MBC与土壤co2排放量（仅在B0和B2处理下）、土壤MBC与土壤N2O排放量（仅在B0、B2和B10处理下）呈显著相关（P< 0.05）。结果表明，施用生物炭可以改变温室气体排放与土壤WSOC和MBC浓度之间的关系。各处理土壤N2O排放量与NH4+-N、NO3−-N和WSON浓度呈显著正相关（P< 0.05）。本研究表明，管理实践（即在土壤中施用生物炭）通过改变板栗人工林的关键土壤性质来减少土壤温室气体排放，这对缓解亚热带人工林土壤温室气体排放具有重要意义。
Biochar application has been proposed as an effective measure to mitigate greenhouse gas (GHG) emissions from soil. However, the effects of different biochar application rates on soil GHG emissions and their linkages with biochar-induced changes in soil environmental factors remain unclear in managed plantations. This study examined the responses of soil GHG emissions to different application rates of bamboo leaf biochar in a Chinese chestnut plantation. A two-year field trial was conducted to determine the changes in soil GHG emissions and key soil properties over time in B0 (control), B2, B5 and B10 treatments, representing biochar application rates of 0, 2, 5 and 10 t ha−1, respectively. Biochar application significantly (P< 0.05) decreased soil N2O emissions (from 2.60 to 2.11 t ha−1yr−1) and increased soil CH4uptake (from 3.13 to 4.22 t ha−1yr−1), but did not change soil CO2emissions. The biochar inhibition effect on soil GHG emissions increased with increasing biochar application rates, with greater inhibition in the first year than in the second year. Biochar application also decreased the concentrations of soil NH4+-N, NO3–-N and water-soluble organic N (WSON), but increased the concentrations of water-soluble organic C (WSOC) and microbial biomass C (MBC). Regardless of the treatments, the soil GHG emissions were significantly (P< 0.01) correlated with soil temperature, but not with soil moisture content. Soil CO2and N2O emissions, and soil CH4uptake were positively (P< 0.05) correlated with WSOC concentration under the B0, B2 and B5 treatments only. A significant relationship (P< 0.05) was observed between soil MBC and soil CO2emissions (only for the B0 and B2 treatments), and soil MBC and soil N2O emissions (only for the B0, B2 and B10 treatments). The results suggest that biochar application rates can alter the relationships between GHG emissions and soil WSOC and MBC concentrations. The soil N2O emissions were positively (P< 0.05) correlated with the NH4+-N, NO3−-N and WSON concentrations in all treatments. This study demonstrated that the management practice (i.e.biochar application to soil) decreased soil GHG emissions in a Chinese chestnut plantationviachanges in key soil properties, with implications for the mitigation of soil GHG emissions in subtropical plantations.
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影响因子：
11.4
作者：
Singh, Bhupinder Pal;Cowie, Annette L.;Smernik, Ronald J.
通讯作者：
Smernik, Ronald J.
影响因子：
2.9
作者：
Shan Yin;Xianxian Zhang;J. Pumpanen;Guangrong Shen;Xiancheng Feng;Chunjiang Liu
通讯作者：
Shan Yin;Xianxian Zhang;J. Pumpanen;Guangrong Shen;Xiancheng Feng;Chunjiang Liu
影响因子：
9.7
作者：
Eleanor Y. Reed;D. Chadwick;P. Hill;Davey L. Jones
通讯作者：
Eleanor Y. Reed;D. Chadwick;P. Hill;Davey L. Jones
微生物化学计量灵活性调节稻草矿化及其在水稻土中的启动效应
影响因子：
9.7
作者：
Zhu Zhenke;Ge Tida;Luo Yu;Liu Shoulong;Xu Xingliang;Tong Chengli;Shibistova Olga;Guggenberger Georg;Wu Jinshui
通讯作者：
Wu Jinshui
DOI：
10.1111/gcbb.12219
发表时间：
2015-09
期刊：
GCB Bioenergy
影响因子：
--
作者：
M. Ventura;G. Alberti;M. Viger;J. R. Jenkins;C. Girardin;S. Baronti;A. Zaldei;G. Taylor;C. Rumpe
通讯作者：
M. Ventura;G. Alberti;M. Viger;J. R. Jenkins;C. Girardin;S. Baronti;A. Zaldei;G. Taylor;C. Rumpe