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Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China

Soil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosys...

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Autores principales: Jiao, Shuying, Li, Junran, Li, Yongqiang, Xu, Ziyun, Kong, Baishu, Li, Ye, Shen, Yuwen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7683548/
https://www.ncbi.nlm.nih.gov/pubmed/33230220
http://dx.doi.org/10.1038/s41598-020-77303-8
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author Jiao, Shuying
Li, Junran
Li, Yongqiang
Xu, Ziyun
Kong, Baishu
Li, Ye
Shen, Yuwen
author_facet Jiao, Shuying
Li, Junran
Li, Yongqiang
Xu, Ziyun
Kong, Baishu
Li, Ye
Shen, Yuwen
author_sort Jiao, Shuying
collection PubMed
description Soil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosystem to induce soil degradation and carbon loss. The objective of this study is to evaluate the variation of soil texture, aggregates stability, and soil carbon affected by land uses. For each land use unit, we collected soil samples from five replicated plots from “S” shape soil profiles to the depth of 50 cm (0–5, 5–10, 10–20, 20–30, and 30–50 cm). The results showed that the grassland had the lowest overall sand content of 39.98–59.34% in the top 50 cm soil profile. The content of soil aggregates > 0.25 mm (R(0.25)), mean weight diameter and geometric mean diameter were significantly higher in grassland than those of the arable and forest land. R(0.25,) aggregate stability in arable land in the top 30 cm were higher than that of forest land, but lower in the soil profile below 20 cm, likely due to different root distribution and agricultural practices. The carbon management index (CMI) was considered as the most effective indicator of soil quality. The overall SOC content and CMI in arable land were almost the lowest among three land use types. In combination with SOC, CMI and soil physical properties, we argued that alfalfa grassland had the advantage to promote soil quality compared with arable land and forest land. This result shed light on the variations of soil properties influenced by land uses and the importance to conduct proper land use for the long-term sustainability of the saline-alkali reclamation region.
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spelling pubmed-76835482020-11-24 Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China Jiao, Shuying Li, Junran Li, Yongqiang Xu, Ziyun Kong, Baishu Li, Ye Shen, Yuwen Sci Rep Article Soil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosystem to induce soil degradation and carbon loss. The objective of this study is to evaluate the variation of soil texture, aggregates stability, and soil carbon affected by land uses. For each land use unit, we collected soil samples from five replicated plots from “S” shape soil profiles to the depth of 50 cm (0–5, 5–10, 10–20, 20–30, and 30–50 cm). The results showed that the grassland had the lowest overall sand content of 39.98–59.34% in the top 50 cm soil profile. The content of soil aggregates > 0.25 mm (R(0.25)), mean weight diameter and geometric mean diameter were significantly higher in grassland than those of the arable and forest land. R(0.25,) aggregate stability in arable land in the top 30 cm were higher than that of forest land, but lower in the soil profile below 20 cm, likely due to different root distribution and agricultural practices. The carbon management index (CMI) was considered as the most effective indicator of soil quality. The overall SOC content and CMI in arable land were almost the lowest among three land use types. In combination with SOC, CMI and soil physical properties, we argued that alfalfa grassland had the advantage to promote soil quality compared with arable land and forest land. This result shed light on the variations of soil properties influenced by land uses and the importance to conduct proper land use for the long-term sustainability of the saline-alkali reclamation region. Nature Publishing Group UK 2020-11-23 /pmc/articles/PMC7683548/ /pubmed/33230220 http://dx.doi.org/10.1038/s41598-020-77303-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Jiao, Shuying
Li, Junran
Li, Yongqiang
Xu, Ziyun
Kong, Baishu
Li, Ye
Shen, Yuwen
Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title_full Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title_fullStr Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title_full_unstemmed Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title_short Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China
title_sort variation of soil organic carbon and physical properties in relation to land uses in the yellow river delta, china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7683548/
https://www.ncbi.nlm.nih.gov/pubmed/33230220
http://dx.doi.org/10.1038/s41598-020-77303-8
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