Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China

Abstract Soil available phosphorus (SAP) and soil available potassium (SAK) are important elements in the growth of plants. However, limited data are available regarding the vertical distribution of SAP and SAK in deep soil profiles. In this study, we investigated the vertical variations in SAP and...

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Autores principales:	Hanyang Tian, Jiangbo Qiao, Yuanjun Zhu, Xiaoxu Jia, Ming’an Shao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2ba9cebb3e114fd0982cb91790050ee0
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spelling	oai:doaj.org-article:2ba9cebb3e114fd0982cb91790050ee02021-12-02T14:06:25ZVertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China10.1038/s41598-021-82677-42045-2322https://doaj.org/article/2ba9cebb3e114fd0982cb91790050ee02021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82677-4https://doaj.org/toc/2045-2322Abstract Soil available phosphorus (SAP) and soil available potassium (SAK) are important elements in the growth of plants. However, limited data are available regarding the vertical distribution of SAP and SAK in deep soil profiles. In this study, we investigated the vertical variations in SAP and SAK in the critical zone on the Loess Plateau (50–200 m), China, by using classical statistical and geostatistical methods. The soil samples were collected from the top of the soil profile down to the bedrock by soil core drilling at five typical sites. SAP decreased throughout the profile. Whereas the SAK exhibited an increasing trend at all sites. The mean SAP concentration ranged from 0.94 to 32.56 mg kg–1 at the sampling sites and the SAK concentration ranged from 44.51 to 229.31 mg kg–1. At all of the sampling sites, SAK was significantly positively correlated with the depth and clay content, but there was a significantly negative correlation between the SAK and the sand content. The exponential model could fit most variograms of SAP and SAK at all sampling sites. The results obtained in this study to improve our comprehension of the SAP or SAK distribution conditions on the Loess Plateau, which is important for reasonable fertilizer application and vegetation planting practices.Hanyang TianJiangbo QiaoYuanjun ZhuXiaoxu JiaMing’an ShaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hanyang Tian Jiangbo Qiao Yuanjun Zhu Xiaoxu Jia Ming’an Shao Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
description	Abstract Soil available phosphorus (SAP) and soil available potassium (SAK) are important elements in the growth of plants. However, limited data are available regarding the vertical distribution of SAP and SAK in deep soil profiles. In this study, we investigated the vertical variations in SAP and SAK in the critical zone on the Loess Plateau (50–200 m), China, by using classical statistical and geostatistical methods. The soil samples were collected from the top of the soil profile down to the bedrock by soil core drilling at five typical sites. SAP decreased throughout the profile. Whereas the SAK exhibited an increasing trend at all sites. The mean SAP concentration ranged from 0.94 to 32.56 mg kg–1 at the sampling sites and the SAK concentration ranged from 44.51 to 229.31 mg kg–1. At all of the sampling sites, SAK was significantly positively correlated with the depth and clay content, but there was a significantly negative correlation between the SAK and the sand content. The exponential model could fit most variograms of SAP and SAK at all sampling sites. The results obtained in this study to improve our comprehension of the SAP or SAK distribution conditions on the Loess Plateau, which is important for reasonable fertilizer application and vegetation planting practices.
format	article
author	Hanyang Tian Jiangbo Qiao Yuanjun Zhu Xiaoxu Jia Ming’an Shao
author_facet	Hanyang Tian Jiangbo Qiao Yuanjun Zhu Xiaoxu Jia Ming’an Shao
author_sort	Hanyang Tian
title	Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
title_short	Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
title_full	Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
title_fullStr	Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
title_full_unstemmed	Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China
title_sort	vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the loess plateau, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2ba9cebb3e114fd0982cb91790050ee0
work_keys_str_mv	AT hanyangtian verticaldistributionofsoilavailablephosphorusandsoilavailablepotassiuminthecriticalzoneontheloessplateauchina AT jiangboqiao verticaldistributionofsoilavailablephosphorusandsoilavailablepotassiuminthecriticalzoneontheloessplateauchina AT yuanjunzhu verticaldistributionofsoilavailablephosphorusandsoilavailablepotassiuminthecriticalzoneontheloessplateauchina AT xiaoxujia verticaldistributionofsoilavailablephosphorusandsoilavailablepotassiuminthecriticalzoneontheloessplateauchina AT minganshao verticaldistributionofsoilavailablephosphorusandsoilavailablepotassiuminthecriticalzoneontheloessplateauchina
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Vertical distribution of soil available phosphorus and soil available potassium in the critical zone on the Loess Plateau, China

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