Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau
Nitrification and denitrification are key microbiological processes in the soil nitrogen cycle and are the main biological sources of N2O emissions from soils. In this work, we measured gross nitrification and denitrification rates of northern Tibet alpine grassland ecosystems during the growing sea...
Published in: | Arctic, Antarctic, and Alpine Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | https://doi.org/10.1657/1938-4246-44.2.188 |
id |
ftchinacadscimhe:oai:ir.imde.ac.cn:131551/4409 |
---|---|
record_format |
openpolar |
spelling |
ftchinacadscimhe:oai:ir.imde.ac.cn:131551/4409 2023-05-15T14:14:03+02:00 Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau Lu, Xuyang Yan, Yan Fan, Jihui Wang, Xiaodan 2012 https://doi.org/10.1657/1938-4246-44.2.188 英语 eng ARCTIC ANTARCTIC AND ALPINE RESEARCH Lu, Xuyang,Yan, Yan,Fan, Jihui,et al. Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2012,44(2):188-196. doi:10.1657/1938-4246-44.2.188 4 Nitrification Denitrification Alpine Grassland The Tibetan Plateau 土壤学 Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography NET NITROGEN MINERALIZATION FLOODED SUBTROPICAL SOIL MICROBIAL BIOMASS-C N MINERALIZATION N2O EMISSIONS NITRIC-OXIDE FOREST SOILS TEMPERATURE RATES MOISTURE Environmental Sciences Geography Physical Article 期刊论文 2012 ftchinacadscimhe https://doi.org/10.1657/1938-4246-44.2.188 2022-12-19T18:17:39Z Nitrification and denitrification are key microbiological processes in the soil nitrogen cycle and are the main biological sources of N2O emissions from soils. In this work, we measured gross nitrification and denitrification rates of northern Tibet alpine grassland ecosystems during the growing season and evaluated the influence of soil environmental factors. The results showed that the soil inorganic nitrogen concentration and gross nitrification and denitrification rates of both alpine meadow and alpine steppe varied obviously across the season. During the growing season mean values of gross nitrification and denitrification rates of the alpine meadow site were 3.0 and 2.3 times greater than those of the alpine steppe site, respectively. Both gross nitrification and denitrification rates were not significantly correlated with the determined soil characteristics which include soil microbial biomass, inorganic nitrogen, and soil temperature, except that gross nitrification seemed associated with the microsite where soil moisture was higher. Our results demonstrate that soil moisture can explain partly the higher soil nitrogen (N) transformation rates in alpine meadow sites, but soil N transformation microorganisms and enzyme activities studies covering prolonged observation periods are still needed to clarify the key soil environmental factors that control gross nitrification and denitrification processes in alpine grassland ecosystems. Article in Journal/Newspaper Antarctic and Alpine Research Arctic IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Arctic, Antarctic, and Alpine Research 44 2 188 196 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Nitrification Denitrification Alpine Grassland The Tibetan Plateau 土壤学 Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography NET NITROGEN MINERALIZATION FLOODED SUBTROPICAL SOIL MICROBIAL BIOMASS-C N MINERALIZATION N2O EMISSIONS NITRIC-OXIDE FOREST SOILS TEMPERATURE RATES MOISTURE Environmental Sciences Geography Physical |
spellingShingle |
Nitrification Denitrification Alpine Grassland The Tibetan Plateau 土壤学 Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography NET NITROGEN MINERALIZATION FLOODED SUBTROPICAL SOIL MICROBIAL BIOMASS-C N MINERALIZATION N2O EMISSIONS NITRIC-OXIDE FOREST SOILS TEMPERATURE RATES MOISTURE Environmental Sciences Geography Physical Lu, Xuyang Yan, Yan Fan, Jihui Wang, Xiaodan Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
topic_facet |
Nitrification Denitrification Alpine Grassland The Tibetan Plateau 土壤学 Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography NET NITROGEN MINERALIZATION FLOODED SUBTROPICAL SOIL MICROBIAL BIOMASS-C N MINERALIZATION N2O EMISSIONS NITRIC-OXIDE FOREST SOILS TEMPERATURE RATES MOISTURE Environmental Sciences Geography Physical |
description |
Nitrification and denitrification are key microbiological processes in the soil nitrogen cycle and are the main biological sources of N2O emissions from soils. In this work, we measured gross nitrification and denitrification rates of northern Tibet alpine grassland ecosystems during the growing season and evaluated the influence of soil environmental factors. The results showed that the soil inorganic nitrogen concentration and gross nitrification and denitrification rates of both alpine meadow and alpine steppe varied obviously across the season. During the growing season mean values of gross nitrification and denitrification rates of the alpine meadow site were 3.0 and 2.3 times greater than those of the alpine steppe site, respectively. Both gross nitrification and denitrification rates were not significantly correlated with the determined soil characteristics which include soil microbial biomass, inorganic nitrogen, and soil temperature, except that gross nitrification seemed associated with the microsite where soil moisture was higher. Our results demonstrate that soil moisture can explain partly the higher soil nitrogen (N) transformation rates in alpine meadow sites, but soil N transformation microorganisms and enzyme activities studies covering prolonged observation periods are still needed to clarify the key soil environmental factors that control gross nitrification and denitrification processes in alpine grassland ecosystems. |
format |
Article in Journal/Newspaper |
author |
Lu, Xuyang Yan, Yan Fan, Jihui Wang, Xiaodan |
author_facet |
Lu, Xuyang Yan, Yan Fan, Jihui Wang, Xiaodan |
author_sort |
Lu, Xuyang |
title |
Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
title_short |
Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
title_full |
Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
title_fullStr |
Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
title_full_unstemmed |
Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau |
title_sort |
gross nitrification and denitrification in alpine grassland ecosystems on the tibetan plateau |
publishDate |
2012 |
url |
https://doi.org/10.1657/1938-4246-44.2.188 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_relation |
ARCTIC ANTARCTIC AND ALPINE RESEARCH Lu, Xuyang,Yan, Yan,Fan, Jihui,et al. Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2012,44(2):188-196. doi:10.1657/1938-4246-44.2.188 |
op_rights |
4 |
op_doi |
https://doi.org/10.1657/1938-4246-44.2.188 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
44 |
container_issue |
2 |
container_start_page |
188 |
op_container_end_page |
196 |
_version_ |
1766286545532223488 |