Cargando…

Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures

The objective was to determine soil properties, and shoot nutrients and nutrient resorption of typical Eurasian steppe species Leymus chinensis in various legume mixtures (legume abundance was 0, 25, 50, and 75%). Mixtures with 25 or 50% legume significantly increased soil moisture and soil [N, P] a...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Qiang, Chen, Xiaoying, Zhou, Daowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199973/
https://www.ncbi.nlm.nih.gov/pubmed/30386354
http://dx.doi.org/10.3389/fpls.2018.01483
_version_ 1783365249708064768
author Li, Qiang
Chen, Xiaoying
Zhou, Daowei
author_facet Li, Qiang
Chen, Xiaoying
Zhou, Daowei
author_sort Li, Qiang
collection PubMed
description The objective was to determine soil properties, and shoot nutrients and nutrient resorption of typical Eurasian steppe species Leymus chinensis in various legume mixtures (legume abundance was 0, 25, 50, and 75%). Mixtures with 25 or 50% legume significantly increased soil moisture and soil [N, P] availabilities. Increasing legume abundance enhanced stem and total biomass of green L. chinensis shoots, further enhanced the proportion of stem biomass by 14–24% in senesced L. chinensis shoots. Legume mixtures, especially 50% legume, enhanced green and senesced organs N concentrations and N pools of L. chinensis. Similarly, mixtures with 25 or 50% legume enhanced P concentration and pool of senesced L. chinensis shoots, whereas both were decreased by 75% legume. As legume abundance increased, contribution ratios of stem to total N and P pools of senesced chinensis shoots increased from 25 to 32 and 25 to 33%, respectively. Mixtures, especially 25 or 50% legume, decreased N and P resorption efficiency (NRE) of L. chinensis shoots, whereas 75% legume increased PRE of L. chinensis. Total resorbed nutrients may remain stable under varying soil conditions for L. chinensis, and resorption of nutrients was symmetric between leaf and stem. In conclusion, legume abundance affected nutrient uptake and return of grass in mixed grasslands, but high legume abundance meant no low N resorption and high litter N content of grass. Furthermore, with increasing legume abundance, stems had more important roles in driving plant production, nutrient utilization, and nutrient return of L. chinensis.
format Online
Article
Text
id pubmed-6199973
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-61999732018-11-01 Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures Li, Qiang Chen, Xiaoying Zhou, Daowei Front Plant Sci Plant Science The objective was to determine soil properties, and shoot nutrients and nutrient resorption of typical Eurasian steppe species Leymus chinensis in various legume mixtures (legume abundance was 0, 25, 50, and 75%). Mixtures with 25 or 50% legume significantly increased soil moisture and soil [N, P] availabilities. Increasing legume abundance enhanced stem and total biomass of green L. chinensis shoots, further enhanced the proportion of stem biomass by 14–24% in senesced L. chinensis shoots. Legume mixtures, especially 50% legume, enhanced green and senesced organs N concentrations and N pools of L. chinensis. Similarly, mixtures with 25 or 50% legume enhanced P concentration and pool of senesced L. chinensis shoots, whereas both were decreased by 75% legume. As legume abundance increased, contribution ratios of stem to total N and P pools of senesced chinensis shoots increased from 25 to 32 and 25 to 33%, respectively. Mixtures, especially 25 or 50% legume, decreased N and P resorption efficiency (NRE) of L. chinensis shoots, whereas 75% legume increased PRE of L. chinensis. Total resorbed nutrients may remain stable under varying soil conditions for L. chinensis, and resorption of nutrients was symmetric between leaf and stem. In conclusion, legume abundance affected nutrient uptake and return of grass in mixed grasslands, but high legume abundance meant no low N resorption and high litter N content of grass. Furthermore, with increasing legume abundance, stems had more important roles in driving plant production, nutrient utilization, and nutrient return of L. chinensis. Frontiers Media S.A. 2018-10-17 /pmc/articles/PMC6199973/ /pubmed/30386354 http://dx.doi.org/10.3389/fpls.2018.01483 Text en Copyright © 2018 Li, Chen and Zhou. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Li, Qiang
Chen, Xiaoying
Zhou, Daowei
Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title_full Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title_fullStr Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title_full_unstemmed Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title_short Shoot Nutrient Content and Nutrient Resorption of Leymus chinensis in Various Legume Mixtures
title_sort shoot nutrient content and nutrient resorption of leymus chinensis in various legume mixtures
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199973/
https://www.ncbi.nlm.nih.gov/pubmed/30386354
http://dx.doi.org/10.3389/fpls.2018.01483
work_keys_str_mv AT liqiang shootnutrientcontentandnutrientresorptionofleymuschinensisinvariouslegumemixtures
AT chenxiaoying shootnutrientcontentandnutrientresorptionofleymuschinensisinvariouslegumemixtures
AT zhoudaowei shootnutrientcontentandnutrientresorptionofleymuschinensisinvariouslegumemixtures