Biochar decreases soil N2O emissions in Moso bamboo plantations through decreasing labile N concentrations, N-cycling enzyme activities and nitrification/denitrification rates
Biochar decreases soil N2O emissions in Moso bamboo plantations through decreasing labile N concentrations, N-cycling enzyme activities and nitrification/denitrification rates
复制标题
生物炭通过降低不稳定氮浓度、氮循环酶活性和硝化/反硝化率来减少毛竹种植园的土壤 N2O 排放
DOI：
10.1016/j.geoderma.2019.04.025
复制
发表时间：
2019-08
期刊：
影响因子：
6.1
通讯作者：
Chang Scott X
中科院分区：
文献类型：
--
作者：
Song Yuze;Li Yongfu;Cai Yanjiang;Fu Shenglei;Luo Yu;Wang Hailong;Liang Chenfei;Lin Ziwen;Hu Shuaidong;Li Yongchun;Chang Scott X
生物炭的应用已被证明是有效的，在减轻土壤中的N2 O排放的农业土壤。然而，生物炭对亚热带人工林土壤N2 O排放的影响及其机制尚不清楚。本研究的目的是调查在24个月的田间试验中，生物炭施用量（0，5和15吨公顷-1）对毛竹（Phyllostachys edulis）种植园林土壤性质和N2 O排放的影响。生物质炭的施用显著降低了土壤N2 O的排放量（P< 0.05），且降低速率与生物质炭的施用量呈正相关。随着时间的推移，减少N2 O排放的生物炭的应用减少。生物炭不影响土壤温度（5cm深度），N2 O排放量与土壤含水量或土壤微生物量C之间没有显着关系。生物炭处理显著（P<0. 05）提高了土壤水溶性有机碳含量，降低了土壤NH 4 +-N、NO3−-N和水溶性有机氮（WSON）含量，降低了土壤脲酶和蛋白酶活性，降低了土壤总硝化和反硝化速率。土壤N2 O通量与土壤NH 4 +-N、NO3−-N和WSON浓度、土壤脲酶和蛋白酶活性、土壤总硝化速率和总反硝化速率均呈正相关（P< 0.05）。结构方程模型表明，生物炭的施用通过降低土壤总硝化和反硝化速率直接降低土壤N2 O排放，通过降低NH 4 +-N、NO3−-N、WSON浓度以及脲酶和蛋白酶活性间接降低土壤N2 O排放。研究表明，生物质炭的施用通过降低毛竹林土壤活性氮浓度、氮循环酶活性和硝化/反硝化速率来降低毛竹林土壤N2 O排放。研究结果表明，生物炭的施用可以有效地缓解亚热带人工林土壤N2 O的排放。
Biochar application has been shown to be effective in mitigating soil N2O emission in agricultural soils. However, the effect of biochar on soil N2O emission in subtropical plantations and the underlining mechanisms are poorly understood. The objective of this study was to investigate the effect of biochar application rates (0, 5 and 15 t ha−1) on soil properties and N2O emissions within a Moso bamboo (Phyllostachys edulis) plantation in a 24-month field trial. Biochar application significantly (P< 0.05) decreased soil N2O emission, with the reduction rate positively related to the biochar application rate. The reduction in N2O emission by biochar application diminished over time. Biochar did not affect soil temperature (at 5 cm depth), and there were no significant relationships between N2O emission and either soil moisture content or soil microbial biomass C. However, biochar application significantly (P< 0.05) increased the water soluble organic C but decreased soil NH4+-N, NO3−-N and water soluble organic N (WSON) concentrations, soil urease and protease activities, and soil gross nitrification and denitrification rates. Soil N2O flux was positively (P< 0.05) correlated with soil NH4+-N, NO3−-N and WSON concentrations, soil urease and protease activities, and soil gross nitrification and denitrification rates, regardless of the treatment. Structural equation modeling suggests that biochar application decreased soil N2O emissions directly by decreasing soil gross nitrification and denitrification rates, and indirectly by decreasing concentrations of NH4+-N, NO3−-N and WSON, and the activities of urease and protease. We conclude that biochar application decreased soil N2O emission in the Moso bamboo plantation by decreasing labile N concentrations, N-cycling enzyme activities and nitrification/denitrification rates. Our findings suggest that biochar application can be an effective method to mitigate soil N2O emission in subtropical plantations.
登录
查看更多内容
影响因子：
1.6
作者：
L. Zwieten;S. Kimber;S. Morris;A. Downie;E. Berger;J. Rust;C. Scheer
通讯作者：
L. Zwieten;S. Kimber;S. Morris;A. Downie;E. Berger;J. Rust;C. Scheer
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
影响因子：
6.2
作者：
Lu Xinhua;Li Yongfu;Wang Hailong;Singh Bhupinder Pal;Hu Shuaidong;Luo Yu;Li Jianwu;Xiao Yongheng;Cai Xiaoqing;Li Yongchun
通讯作者：
Li Yongchun
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：
10.1016/j.scitotenv.2017.12.081
发表时间：
2018-05
期刊：
The Science of the total environment
影响因子：
--
作者：
I. Wanyama;I. Wanyama;D. Pelster;D. Pelster;C. Arias‐Navarro;C. Arias‐Navarro;C. Arias‐Navarro;K. Butterbach‐Bahl;K. Butterbach‐Bahl;Louis V. Verchot;M. Rufino;M. Rufino
通讯作者：
I. Wanyama;I. Wanyama;D. Pelster;D. Pelster;C. Arias‐Navarro;C. Arias‐Navarro;C. Arias‐Navarro;K. Butterbach‐Bahl;K. Butterbach‐Bahl;Louis V. Verchot;M. Rufino;M. Rufino
影响因子：
4.9
作者：
W. Frankenberger;J. Johanson
通讯作者：
W. Frankenberger;J. Johanson