Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields

Soil bioavailable micronutrients have a significant impact on soil fertility, soil quality, maize production, and even environmental quality. However, minimal research has been conducted to characterize the spatial patterns of soil bioavailable micronutrients at the large spatial extent within the m...

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Autores principales:	Hongfen Zhu, Haoxi Ding, Rutian Bi, Meiting Hou
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Scale effect Local effect Residue Bioavailable micronutrient Large spatial extent Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/15fb9df365fd4dd18bc18a3907c3eb69
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spelling	oai:doaj.org-article:15fb9df365fd4dd18bc18a3907c3eb692021-12-01T04:58:48ZLarge-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields1470-160X10.1016/j.ecolind.2021.108071https://doaj.org/article/15fb9df365fd4dd18bc18a3907c3eb692021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007366https://doaj.org/toc/1470-160XSoil bioavailable micronutrients have a significant impact on soil fertility, soil quality, maize production, and even environmental quality. However, minimal research has been conducted to characterize the spatial patterns of soil bioavailable micronutrients at the large spatial extent within the maize filed and to reveal the relative control of environmental factors on them at the global and local scale. In the study, topsoil samples (0–20 cm of plough depth, totaling 4,448) were collected from maize field to determine the spatial heterogeneity of soil bioavailable micronutrients including iron (Fe), manganese (Mn), copper (Cu), zinc (Zn) and boron (B), and to assess the relative effect of environmental indicators on them. Based on the 2-dimensional empirical mode decomposition (2D-EMD), the spatial pattern of micronutrients at the residues and their relationships with influencing indicators were explored. The results demonstrated that the distribution of Fe and Mn had the dominant longitudinal zonality, the distribution of Cu and Zn had the prominent vertical zonality, and the spatial characteristic of B did not exhibit any particular pattern at the large spatial extent. Based on the stepwise multivariate linear regression with the residues, environmental indicators had less global effect on the distribution of soil bioavailable micronutrients. However, based on the combination of geographically weighted regression (GWR) and 2D-EMD, environmental indicators had a good and significant interpretation on the dynamics of micronutrients bioavailability, which ranged from 53% to 75% in the study area. Specifically, the impact of environmental indicators on Fe, Mn, and Zn were greater, and the impact of human activities on B was greater. Our findings indicated that the local and scale effects on the soil available micronutrients should be integrated into the prediction methods, and the combined method of GWR and 2D-EMD would be a good choice for the high-quality digital mapping at large spatial extent.Hongfen ZhuHaoxi DingRutian BiMeiting HouElsevierarticleScale effectLocal effectResidueBioavailable micronutrientLarge spatial extentEcologyQH540-549.5ENEcological Indicators, Vol 130, Iss , Pp 108071- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Scale effect Local effect Residue Bioavailable micronutrient Large spatial extent Ecology QH540-549.5
spellingShingle	Scale effect Local effect Residue Bioavailable micronutrient Large spatial extent Ecology QH540-549.5 Hongfen Zhu Haoxi Ding Rutian Bi Meiting Hou Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
description	Soil bioavailable micronutrients have a significant impact on soil fertility, soil quality, maize production, and even environmental quality. However, minimal research has been conducted to characterize the spatial patterns of soil bioavailable micronutrients at the large spatial extent within the maize filed and to reveal the relative control of environmental factors on them at the global and local scale. In the study, topsoil samples (0–20 cm of plough depth, totaling 4,448) were collected from maize field to determine the spatial heterogeneity of soil bioavailable micronutrients including iron (Fe), manganese (Mn), copper (Cu), zinc (Zn) and boron (B), and to assess the relative effect of environmental indicators on them. Based on the 2-dimensional empirical mode decomposition (2D-EMD), the spatial pattern of micronutrients at the residues and their relationships with influencing indicators were explored. The results demonstrated that the distribution of Fe and Mn had the dominant longitudinal zonality, the distribution of Cu and Zn had the prominent vertical zonality, and the spatial characteristic of B did not exhibit any particular pattern at the large spatial extent. Based on the stepwise multivariate linear regression with the residues, environmental indicators had less global effect on the distribution of soil bioavailable micronutrients. However, based on the combination of geographically weighted regression (GWR) and 2D-EMD, environmental indicators had a good and significant interpretation on the dynamics of micronutrients bioavailability, which ranged from 53% to 75% in the study area. Specifically, the impact of environmental indicators on Fe, Mn, and Zn were greater, and the impact of human activities on B was greater. Our findings indicated that the local and scale effects on the soil available micronutrients should be integrated into the prediction methods, and the combined method of GWR and 2D-EMD would be a good choice for the high-quality digital mapping at large spatial extent.
format	article
author	Hongfen Zhu Haoxi Ding Rutian Bi Meiting Hou
author_facet	Hongfen Zhu Haoxi Ding Rutian Bi Meiting Hou
author_sort	Hongfen Zhu
title	Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
title_short	Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
title_full	Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
title_fullStr	Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
title_full_unstemmed	Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
title_sort	large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/15fb9df365fd4dd18bc18a3907c3eb69
work_keys_str_mv	AT hongfenzhu largeextentspatialheterogeneityofsoilbioavailablemicronutrientsandtherelativerolesofenvironmentalindicatorsonthemwithinmaizefields AT haoxiding largeextentspatialheterogeneityofsoilbioavailablemicronutrientsandtherelativerolesofenvironmentalindicatorsonthemwithinmaizefields AT rutianbi largeextentspatialheterogeneityofsoilbioavailablemicronutrientsandtherelativerolesofenvironmentalindicatorsonthemwithinmaizefields AT meitinghou largeextentspatialheterogeneityofsoilbioavailablemicronutrientsandtherelativerolesofenvironmentalindicatorsonthemwithinmaizefields
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Large-extent spatial heterogeneity of soil bioavailable micronutrients and the relative roles of environmental indicators on them within maize fields

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