Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China
Microbial nitrogen (N) transformations play a key role in regulating N cycling in grassland ecosystems. However, there is still little information on how management of semi-arid grassland such as mowing and/or N fertilizer application affects microbial activity and N transformations. In a field expe...
Published in: | European Journal of Soil Science |
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ftchiacadscibcas:oai:ir.ibcas.ac.cn:2S10CLM1/25819 2023-05-15T15:16:42+02:00 Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China Wang, C. Butterbach-Bahl, K. He, N. Wang, Q. Xing, X. Han, X. 2015 http://ir.ibcas.ac.cn/handle/2S10CLM1/25819 https://doi.org/10.1111/ejss.12231 英语 eng WILEY EUROPEAN JOURNAL OF SOIL SCIENCE http://ir.ibcas.ac.cn/handle/2S10CLM1/25819 doi:10.1111/ejss.12231 cn.org.cspace.api.content.CopyrightPolicy@7047ec9f Soil Science SUB-ARCTIC MEADOW TERRESTRIAL ECOSYSTEMS N-MINERALIZATION BIOMASS REMOVAL SOIL RESPONSES FERTILIZATION RESPIRATION LIMITATION FOREST Science Citation Index Expanded (SCI-EXPANDED) Article 期刊论文 2015 ftchiacadscibcas https://doi.org/10.1111/ejss.12231 2023-02-20T16:51:09Z Microbial nitrogen (N) transformations play a key role in regulating N cycling in grassland ecosystems. However, there is still little information on how management of semi-arid grassland such as mowing and/or N fertilizer application affects microbial activity and N transformations. In a field experiment in northern China, N was added at a rate of 10 g N m(-2) year(-1) as NH4NO3 to mown and unmown plots (4 x 4 m(2)) and in situ rates of net ammonification (R-amm), nitrification (R-nit) and mineralization (R-min) were followed at monthly intervals for the vegetation growth periods in the years 2006-2009. In addition, we also measured soil microbial biomass carbon (MBC) and nitrogen (MBN), microbial respiration (MR) and peak above-ground biomass in August of each measurement year. Driven by the pronounced inter-annual variability of rainfall, all the properties investigated varied markedly across years. Nevertheless, we were able to demonstrate that over the 4 years N addition significantly stimulated R-nit, R-min and MBN, on average, by 288, 149 and 11.6%, respectively. However, N addition decreased MBC significantly as well as the ratio of MBC:MBN by, on average, 10 and 23%, respectively, whereas an effect of N addition on MR could not be demonstrated. Mowing decreased MBN, MR and qCO(2) significantly by 9, 28 and 24%, respectively, but no effects were found on microbial net N transformation rates and MBC. N addition and mowing interactively affected R-amm and R-min, and MBN, MBC:MBN. In summary, our results indicate a positive effect of N addition but a negative effect of mowing on microbial N transformation in this C4 grassland in northern China. Article in Journal/Newspaper Arctic Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) Arctic European Journal of Soil Science 66 3 485 495 |
institution |
Open Polar |
collection |
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) |
op_collection_id |
ftchiacadscibcas |
language |
English |
topic |
Soil Science SUB-ARCTIC MEADOW TERRESTRIAL ECOSYSTEMS N-MINERALIZATION BIOMASS REMOVAL SOIL RESPONSES FERTILIZATION RESPIRATION LIMITATION FOREST Science Citation Index Expanded (SCI-EXPANDED) |
spellingShingle |
Soil Science SUB-ARCTIC MEADOW TERRESTRIAL ECOSYSTEMS N-MINERALIZATION BIOMASS REMOVAL SOIL RESPONSES FERTILIZATION RESPIRATION LIMITATION FOREST Science Citation Index Expanded (SCI-EXPANDED) Wang, C. Butterbach-Bahl, K. He, N. Wang, Q. Xing, X. Han, X. Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
topic_facet |
Soil Science SUB-ARCTIC MEADOW TERRESTRIAL ECOSYSTEMS N-MINERALIZATION BIOMASS REMOVAL SOIL RESPONSES FERTILIZATION RESPIRATION LIMITATION FOREST Science Citation Index Expanded (SCI-EXPANDED) |
description |
Microbial nitrogen (N) transformations play a key role in regulating N cycling in grassland ecosystems. However, there is still little information on how management of semi-arid grassland such as mowing and/or N fertilizer application affects microbial activity and N transformations. In a field experiment in northern China, N was added at a rate of 10 g N m(-2) year(-1) as NH4NO3 to mown and unmown plots (4 x 4 m(2)) and in situ rates of net ammonification (R-amm), nitrification (R-nit) and mineralization (R-min) were followed at monthly intervals for the vegetation growth periods in the years 2006-2009. In addition, we also measured soil microbial biomass carbon (MBC) and nitrogen (MBN), microbial respiration (MR) and peak above-ground biomass in August of each measurement year. Driven by the pronounced inter-annual variability of rainfall, all the properties investigated varied markedly across years. Nevertheless, we were able to demonstrate that over the 4 years N addition significantly stimulated R-nit, R-min and MBN, on average, by 288, 149 and 11.6%, respectively. However, N addition decreased MBC significantly as well as the ratio of MBC:MBN by, on average, 10 and 23%, respectively, whereas an effect of N addition on MR could not be demonstrated. Mowing decreased MBN, MR and qCO(2) significantly by 9, 28 and 24%, respectively, but no effects were found on microbial net N transformation rates and MBC. N addition and mowing interactively affected R-amm and R-min, and MBN, MBC:MBN. In summary, our results indicate a positive effect of N addition but a negative effect of mowing on microbial N transformation in this C4 grassland in northern China. |
format |
Article in Journal/Newspaper |
author |
Wang, C. Butterbach-Bahl, K. He, N. Wang, Q. Xing, X. Han, X. |
author_facet |
Wang, C. Butterbach-Bahl, K. He, N. Wang, Q. Xing, X. Han, X. |
author_sort |
Wang, C. |
title |
Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
title_short |
Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
title_full |
Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
title_fullStr |
Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
title_full_unstemmed |
Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China |
title_sort |
nitrogen addition and mowing affect microbial nitrogen transformations in a c4 grassland in northern china |
publisher |
WILEY |
publishDate |
2015 |
url |
http://ir.ibcas.ac.cn/handle/2S10CLM1/25819 https://doi.org/10.1111/ejss.12231 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
EUROPEAN JOURNAL OF SOIL SCIENCE http://ir.ibcas.ac.cn/handle/2S10CLM1/25819 doi:10.1111/ejss.12231 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@7047ec9f |
op_doi |
https://doi.org/10.1111/ejss.12231 |
container_title |
European Journal of Soil Science |
container_volume |
66 |
container_issue |
3 |
container_start_page |
485 |
op_container_end_page |
495 |
_version_ |
1766347004615589888 |