The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau

The degradation of the grassland system has severely threatened the safety of the ecological environment and animal husbandry. The supplement of key substances lost due to degradation is widely used to accelerate the restoration of the degraded grassland ecosystem. In this study, we investigated the...

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Autores principales:	Jinsheng Li, Yinquan Zhao, Xinqing Shao, Ding Huang, Jianying Shang, Hui Li, Yixuan He, Kesi Liu
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	alpine grassland degradation biochar soil physicochemical property microbial community Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/ba8a7db318da4301b6ab2f846530a273
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spelling	oai:doaj.org-article:ba8a7db318da4301b6ab2f846530a2732021-11-30T10:09:20ZThe Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau1664-462X10.3389/fpls.2021.765041https://doaj.org/article/ba8a7db318da4301b6ab2f846530a2732021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpls.2021.765041/fullhttps://doaj.org/toc/1664-462XThe degradation of the grassland system has severely threatened the safety of the ecological environment and animal husbandry. The supplement of key substances lost due to degradation is widely used to accelerate the restoration of the degraded grassland ecosystem. In this study, we investigated the effects of biochar and nitrogen addition on soil properties and microorganisms of degraded alpine grassland. The experimental treatments consisted of the control without any addition, only nitrogen addition (10 gN/m2), only biochar addition (4.00 kg/m2 biochar), and the mixed addition of biochar and nitrogen (4.00 kg/m2 biochar and 10 gN/m2 nitrogen, respectively). Adding N alone did not significantly change the pH, total organic carbon (TOC), total nitrogen (TN), microbial biomass (MB), and the composition proportion of microbes of the soil, but increased the contents of soil water content (SWC), NH4+-N, NO3–-N, available phosphorus (AP), and the biomass of bacteria and fungi. The addition of biochar or the mixture of biochar and nitrogen increased the contents of pH, TOC, TN, MB, SWC, NH4+-N, NO3–-N, AP, bacteria, and fungi in the soil and changed the structure of the soil microbial community. The increasing intensity of AP, bacteria, and fungi under the addition of biochar or the mixture of biochar and nitrogen was significantly greater than that under N addition alone. These results indicated that the separated addition of nitrogen and biochar and the mixed addition of biochar and nitrogen all improved the soil condition of the moderate–severe degraded alpine grassland, but the mixed addition of biochar and nitrogen could be a better strategy to remediate the degraded alpine grassland.Jinsheng LiYinquan ZhaoXinqing ShaoDing HuangJianying ShangHui LiYixuan HeKesi LiuKesi LiuKesi LiuFrontiers Media S.A.articlealpine grasslanddegradationbiocharsoil physicochemical propertymicrobial communityPlant cultureSB1-1110ENFrontiers in Plant Science, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	alpine grassland degradation biochar soil physicochemical property microbial community Plant culture SB1-1110
spellingShingle	alpine grassland degradation biochar soil physicochemical property microbial community Plant culture SB1-1110 Jinsheng Li Yinquan Zhao Xinqing Shao Ding Huang Jianying Shang Hui Li Yixuan He Kesi Liu Kesi Liu Kesi Liu The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
description	The degradation of the grassland system has severely threatened the safety of the ecological environment and animal husbandry. The supplement of key substances lost due to degradation is widely used to accelerate the restoration of the degraded grassland ecosystem. In this study, we investigated the effects of biochar and nitrogen addition on soil properties and microorganisms of degraded alpine grassland. The experimental treatments consisted of the control without any addition, only nitrogen addition (10 gN/m2), only biochar addition (4.00 kg/m2 biochar), and the mixed addition of biochar and nitrogen (4.00 kg/m2 biochar and 10 gN/m2 nitrogen, respectively). Adding N alone did not significantly change the pH, total organic carbon (TOC), total nitrogen (TN), microbial biomass (MB), and the composition proportion of microbes of the soil, but increased the contents of soil water content (SWC), NH4+-N, NO3–-N, available phosphorus (AP), and the biomass of bacteria and fungi. The addition of biochar or the mixture of biochar and nitrogen increased the contents of pH, TOC, TN, MB, SWC, NH4+-N, NO3–-N, AP, bacteria, and fungi in the soil and changed the structure of the soil microbial community. The increasing intensity of AP, bacteria, and fungi under the addition of biochar or the mixture of biochar and nitrogen was significantly greater than that under N addition alone. These results indicated that the separated addition of nitrogen and biochar and the mixed addition of biochar and nitrogen all improved the soil condition of the moderate–severe degraded alpine grassland, but the mixed addition of biochar and nitrogen could be a better strategy to remediate the degraded alpine grassland.
format	article
author	Jinsheng Li Yinquan Zhao Xinqing Shao Ding Huang Jianying Shang Hui Li Yixuan He Kesi Liu Kesi Liu Kesi Liu
author_facet	Jinsheng Li Yinquan Zhao Xinqing Shao Ding Huang Jianying Shang Hui Li Yixuan He Kesi Liu Kesi Liu Kesi Liu
author_sort	Jinsheng Li
title	The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
title_short	The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
title_full	The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
title_fullStr	The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
title_full_unstemmed	The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau
title_sort	mixed addition of biochar and nitrogen improves soil properties and microbial structure of moderate–severe degraded alpine grassland in qinghai-tibet plateau
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/ba8a7db318da4301b6ab2f846530a273
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The Mixed Addition of Biochar and Nitrogen Improves Soil Properties and Microbial Structure of Moderate–Severe Degraded Alpine Grassland in Qinghai-Tibet Plateau

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