Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands
Nitrogen (N) is a major limiting element for productivity in temperate grasslands, particularly during early spring when soil N availability is low and the vegetative demand for it is high. Therefore, knowing whether and how plant species adopt different N acquisition strategies during the winter-sp...
Published in: | Soil Biology and Biochemistry |
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PERGAMON-ELSEVIER SCIENCE LTD
2018
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Online Access: | http://ir.ibcas.ac.cn/handle/2S10CLM1/20666 https://doi.org/10.1016/j.soilbio.2018.04.020 |
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ftchiacadscibcas:oai:ir.ibcas.ac.cn:2S10CLM1/20666 2023-05-15T15:19:14+02:00 Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands Ma, Linna Liu, Guofang Xu, Xiaofeng Xin, Xiaoping Bai, Wenming Zhang, Lihua Chen, Shiping Wang, Renzhong 2018 http://ir.ibcas.ac.cn/handle/2S10CLM1/20666 https://doi.org/10.1016/j.soilbio.2018.04.020 英语 eng PERGAMON-ELSEVIER SCIENCE LTD SOIL BIOLOGY & BIOCHEMISTRY http://ir.ibcas.ac.cn/handle/2S10CLM1/20666 doi:10.1016/j.soilbio.2018.04.020 cn.org.cspace.api.content.CopyrightPolicy@1a459cfb Early spring Microbial biomass N-15 labeling Plant-soil feedback Plant N uptake Temperate grassland Soil Science SOIL MICROBIAL BIOMASS INORGANIC NITROGEN ARCTIC TUNDRA POPULATION-DYNAMICS COMMUNITY STRUCTURE SEASONAL DYNAMICS ALPINE ECOSYSTEM LEYMUS-CHINENSIS NORTHERN CHINA CARBON Article 期刊论文 2018 ftchiacadscibcas https://doi.org/10.1016/j.soilbio.2018.04.020 2022-06-12T18:14:06Z Nitrogen (N) is a major limiting element for productivity in temperate grasslands, particularly during early spring when soil N availability is low and the vegetative demand for it is high. Therefore, knowing whether and how plant species adopt different N acquisition strategies during the winter-spring transitional period is essential for understanding ecosystem functioning in temperate grasslands. In this study, parallel experiments with N-15 tracer were conducted to examine plant N acquisition strategies during winter-spring transition in a meadow and a typical steppe in northern China. We found that soil microbes immobilized 20% of the N-15 tracer during the spring thawing period at both sites, and then released half of it back to the soil before late spring, confirming that soil microbes competed effectively with the plant roots for mineral N in early spring. Perennial bunch grasses adopted an active N acquisition strategy at the beginning of the spring thawing period. In contrast, perennial forbs and rhizome grasses began to take up N in the middle of the spring thawing period, and they acquired more N than the bunch grasses. However, sagebrushes and legumes accounted for little N-15 recovery, indicating their dependence on internal N accumulation or N fixation. At the ecosystem level, no significant difference in the magnitude of plant N-15 uptake was observed between the meadow steppe and typical steppe, although the plant biomass N in the meadow steppe was twice that of the typical steppe during the thawing period. This was attributed to the higher soil inorganic N and faster net N mineralization rate in the meadow steppe than in the typical steppe. Our results suggest that temporal niche differentiation in N acquisition during early spring may facilitate species coexistence in temperate grasslands despite strong plant-microbe or plant-plant competition for N. The divergent N acquisition strategies at the species level and convergent N acquisition strategies at the ecosystem level should be considered ... Article in Journal/Newspaper Arctic Tundra Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) Arctic Soil Biology and Biochemistry 122 150 159 |
institution |
Open Polar |
collection |
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences) |
op_collection_id |
ftchiacadscibcas |
language |
English |
topic |
Early spring Microbial biomass N-15 labeling Plant-soil feedback Plant N uptake Temperate grassland Soil Science SOIL MICROBIAL BIOMASS INORGANIC NITROGEN ARCTIC TUNDRA POPULATION-DYNAMICS COMMUNITY STRUCTURE SEASONAL DYNAMICS ALPINE ECOSYSTEM LEYMUS-CHINENSIS NORTHERN CHINA CARBON |
spellingShingle |
Early spring Microbial biomass N-15 labeling Plant-soil feedback Plant N uptake Temperate grassland Soil Science SOIL MICROBIAL BIOMASS INORGANIC NITROGEN ARCTIC TUNDRA POPULATION-DYNAMICS COMMUNITY STRUCTURE SEASONAL DYNAMICS ALPINE ECOSYSTEM LEYMUS-CHINENSIS NORTHERN CHINA CARBON Ma, Linna Liu, Guofang Xu, Xiaofeng Xin, Xiaoping Bai, Wenming Zhang, Lihua Chen, Shiping Wang, Renzhong Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
topic_facet |
Early spring Microbial biomass N-15 labeling Plant-soil feedback Plant N uptake Temperate grassland Soil Science SOIL MICROBIAL BIOMASS INORGANIC NITROGEN ARCTIC TUNDRA POPULATION-DYNAMICS COMMUNITY STRUCTURE SEASONAL DYNAMICS ALPINE ECOSYSTEM LEYMUS-CHINENSIS NORTHERN CHINA CARBON |
description |
Nitrogen (N) is a major limiting element for productivity in temperate grasslands, particularly during early spring when soil N availability is low and the vegetative demand for it is high. Therefore, knowing whether and how plant species adopt different N acquisition strategies during the winter-spring transitional period is essential for understanding ecosystem functioning in temperate grasslands. In this study, parallel experiments with N-15 tracer were conducted to examine plant N acquisition strategies during winter-spring transition in a meadow and a typical steppe in northern China. We found that soil microbes immobilized 20% of the N-15 tracer during the spring thawing period at both sites, and then released half of it back to the soil before late spring, confirming that soil microbes competed effectively with the plant roots for mineral N in early spring. Perennial bunch grasses adopted an active N acquisition strategy at the beginning of the spring thawing period. In contrast, perennial forbs and rhizome grasses began to take up N in the middle of the spring thawing period, and they acquired more N than the bunch grasses. However, sagebrushes and legumes accounted for little N-15 recovery, indicating their dependence on internal N accumulation or N fixation. At the ecosystem level, no significant difference in the magnitude of plant N-15 uptake was observed between the meadow steppe and typical steppe, although the plant biomass N in the meadow steppe was twice that of the typical steppe during the thawing period. This was attributed to the higher soil inorganic N and faster net N mineralization rate in the meadow steppe than in the typical steppe. Our results suggest that temporal niche differentiation in N acquisition during early spring may facilitate species coexistence in temperate grasslands despite strong plant-microbe or plant-plant competition for N. The divergent N acquisition strategies at the species level and convergent N acquisition strategies at the ecosystem level should be considered ... |
format |
Article in Journal/Newspaper |
author |
Ma, Linna Liu, Guofang Xu, Xiaofeng Xin, Xiaoping Bai, Wenming Zhang, Lihua Chen, Shiping Wang, Renzhong |
author_facet |
Ma, Linna Liu, Guofang Xu, Xiaofeng Xin, Xiaoping Bai, Wenming Zhang, Lihua Chen, Shiping Wang, Renzhong |
author_sort |
Ma, Linna |
title |
Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
title_short |
Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
title_full |
Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
title_fullStr |
Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
title_full_unstemmed |
Nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
title_sort |
nitrogen acquisition strategies during the winter-spring transitional period are divergent at the species level yet convergent at the ecosystem level in temperate grasslands |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2018 |
url |
http://ir.ibcas.ac.cn/handle/2S10CLM1/20666 https://doi.org/10.1016/j.soilbio.2018.04.020 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
SOIL BIOLOGY & BIOCHEMISTRY http://ir.ibcas.ac.cn/handle/2S10CLM1/20666 doi:10.1016/j.soilbio.2018.04.020 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@1a459cfb |
op_doi |
https://doi.org/10.1016/j.soilbio.2018.04.020 |
container_title |
Soil Biology and Biochemistry |
container_volume |
122 |
container_start_page |
150 |
op_container_end_page |
159 |
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1766349411935322112 |