Effects of FACE on denitrification activity in paddy-field soil
A free-air CO<sub>2</sub> enrichment (FACE) experiment was used to investigate the effects of elevated atmospheric CO<sub>2</sub> concentration on soil denitrification activities. The FACE system was conducted under a rice/wheat rotation at Jiangdu, China. The numbers of deni...
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| Language: | English |
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Zhejiang University Press
2007-05-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2007.03.0284 |
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| author | WANG Shu-yi HAN Lin SHI Yi MEI Bao-lin ZHU Jian-guo |
| author_facet | WANG Shu-yi HAN Lin SHI Yi MEI Bao-lin ZHU Jian-guo |
| author_sort | WANG Shu-yi |
| collection | DOAJ |
| description | A free-air CO<sub>2</sub> enrichment (FACE) experiment was used to investigate the effects of elevated atmospheric CO<sub>2</sub> concentration on soil denitrification activities. The FACE system was conducted under a rice/wheat rotation at Jiangdu, China. The numbers of denitrifying bacteria, the activities of nitrate reductase and nitrite reductase was studied by sampling fresh soils from the fields with two different N fertilization levels (Usual N and Low N) and two rice straw incorporation levels [HR (half straw return) and NR (no straw return)] exposed to the elevated and ambient CO<sub>2</sub> during the rice-growing season in 2005. And the denitrification potential was determined at jointing stage. The results showed that elevated atmospheric CO<sub>2</sub> concentrations decreased denitrifying bacteria numbers, especially at UN and NR conditions (P<0.01). FACE had little impact on the activities of nitrate reductase and nitrite reductase. The study on DP (denitrification potential) showed that DP from FACE plots only arrived to 84.21% and 97.46% of ambients under LN and UN levels. The denitrification was restraind because of their competition between plant growing and microbial activity promoted by FACE. |
| format | Article |
| id | doaj-art-433b47e3b80a499bb62fb6fc10c924a3 |
| institution | DOAJ |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2007-05-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-433b47e3b80a499bb62fb6fc10c924a32025-08-20T03:16:18ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552007-05-013328428910.3785/1008-9209.2007.03.028410089209Effects of FACE on denitrification activity in paddy-field soilWANG Shu-yiHAN LinSHI YiMEI Bao-linZHU Jian-guoA free-air CO<sub>2</sub> enrichment (FACE) experiment was used to investigate the effects of elevated atmospheric CO<sub>2</sub> concentration on soil denitrification activities. The FACE system was conducted under a rice/wheat rotation at Jiangdu, China. The numbers of denitrifying bacteria, the activities of nitrate reductase and nitrite reductase was studied by sampling fresh soils from the fields with two different N fertilization levels (Usual N and Low N) and two rice straw incorporation levels [HR (half straw return) and NR (no straw return)] exposed to the elevated and ambient CO<sub>2</sub> during the rice-growing season in 2005. And the denitrification potential was determined at jointing stage. The results showed that elevated atmospheric CO<sub>2</sub> concentrations decreased denitrifying bacteria numbers, especially at UN and NR conditions (P<0.01). FACE had little impact on the activities of nitrate reductase and nitrite reductase. The study on DP (denitrification potential) showed that DP from FACE plots only arrived to 84.21% and 97.46% of ambients under LN and UN levels. The denitrification was restraind because of their competition between plant growing and microbial activity promoted by FACE.https://www.academax.com/doi/10.3785/1008-9209.2007.03.0284FACEdenitrification activitypaddy-field soil |
| spellingShingle | WANG Shu-yi HAN Lin SHI Yi MEI Bao-lin ZHU Jian-guo Effects of FACE on denitrification activity in paddy-field soil 浙江大学学报. 农业与生命科学版 FACE denitrification activity paddy-field soil |
| title | Effects of FACE on denitrification activity in paddy-field soil |
| title_full | Effects of FACE on denitrification activity in paddy-field soil |
| title_fullStr | Effects of FACE on denitrification activity in paddy-field soil |
| title_full_unstemmed | Effects of FACE on denitrification activity in paddy-field soil |
| title_short | Effects of FACE on denitrification activity in paddy-field soil |
| title_sort | effects of face on denitrification activity in paddy field soil |
| topic | FACE denitrification activity paddy-field soil |
| url | https://www.academax.com/doi/10.3785/1008-9209.2007.03.0284 |
| work_keys_str_mv | AT wangshuyi effectsoffaceondenitrificationactivityinpaddyfieldsoil AT hanlin effectsoffaceondenitrificationactivityinpaddyfieldsoil AT shiyi effectsoffaceondenitrificationactivityinpaddyfieldsoil AT meibaolin effectsoffaceondenitrificationactivityinpaddyfieldsoil AT zhujianguo effectsoffaceondenitrificationactivityinpaddyfieldsoil |