Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China
Trace elements in farmland soil are important indicators of soil quality and farmland health, and also maintain the nutrient balance and promote the healthy growth of plants. In this study, taking Conghua District of Guangzhou city as the study area, the effects of topography, soil, land use, and ot...
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MDPI AG
2022-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/2/478 |
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| author | Runyan Zou Yuting Zhang Yueming Hu Lu Wang Yingkai Xie Luo Liu Hao Yang Jie Liao |
| author_facet | Runyan Zou Yuting Zhang Yueming Hu Lu Wang Yingkai Xie Luo Liu Hao Yang Jie Liao |
| author_sort | Runyan Zou |
| collection | DOAJ |
| description | Trace elements in farmland soil are important indicators of soil quality and farmland health, and also maintain the nutrient balance and promote the healthy growth of plants. In this study, taking Conghua District of Guangzhou city as the study area, the effects of topography, soil, land use, and other factors on trace elements in soil were investigated, and the spatial variability of boron (B), manganese (Mn), molybdenum (Mo), copper (Cu), and zinc (Zn) in farmland soil in a typical red soil region were mapped using a geographically weighted regression (GWR) method. The pH and land economic index (LEI) were important factors affecting the changes in trace element concentrations in the five soils, and the Cu and Zn concentrations were clearly affected by human factors. In the study area, 86.99% of B measurements were classified as low and very low levels, 50.61% and 49.20% of Mo measurements were also low and very low, 71.79% of Mn measurements were classified as moderate, while 91.02% of Cu and 52.95% of Zn measurements were classified as high. After a cross validation, the GWR Kriging (GWRK) model results of each element were relatively stable, and the order of the fitting coefficient (R<sup>2</sup>) was Cu > Zn > B> Mn > Mo. This study clarifies the spatial distribution and influencing factors of soil microelements in the studied region. This information can be used to improve the nutrient imbalance, further guide agricultural production, strengthen the management of farmland, and improve the healthy productivity of cultivated land. |
| first_indexed | 2024-03-09T22:49:15Z |
| format | Article |
| id | doaj.art-3c6defb2f9aa40cc87f8fb29c146d215 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T22:49:15Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-3c6defb2f9aa40cc87f8fb29c146d2152023-11-23T18:22:43ZengMDPI AGAgronomy2073-43952022-02-0112247810.3390/agronomy12020478Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of ChinaRunyan Zou0Yuting Zhang1Yueming Hu2Lu Wang3Yingkai Xie4Luo Liu5Hao Yang6Jie Liao7College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, ChinaTrace elements in farmland soil are important indicators of soil quality and farmland health, and also maintain the nutrient balance and promote the healthy growth of plants. In this study, taking Conghua District of Guangzhou city as the study area, the effects of topography, soil, land use, and other factors on trace elements in soil were investigated, and the spatial variability of boron (B), manganese (Mn), molybdenum (Mo), copper (Cu), and zinc (Zn) in farmland soil in a typical red soil region were mapped using a geographically weighted regression (GWR) method. The pH and land economic index (LEI) were important factors affecting the changes in trace element concentrations in the five soils, and the Cu and Zn concentrations were clearly affected by human factors. In the study area, 86.99% of B measurements were classified as low and very low levels, 50.61% and 49.20% of Mo measurements were also low and very low, 71.79% of Mn measurements were classified as moderate, while 91.02% of Cu and 52.95% of Zn measurements were classified as high. After a cross validation, the GWR Kriging (GWRK) model results of each element were relatively stable, and the order of the fitting coefficient (R<sup>2</sup>) was Cu > Zn > B> Mn > Mo. This study clarifies the spatial distribution and influencing factors of soil microelements in the studied region. This information can be used to improve the nutrient imbalance, further guide agricultural production, strengthen the management of farmland, and improve the healthy productivity of cultivated land.https://www.mdpi.com/2073-4395/12/2/478soil environmental qualitytrace elementsspatial variationinfluence factordigital soil mapping |
| spellingShingle | Runyan Zou Yuting Zhang Yueming Hu Lu Wang Yingkai Xie Luo Liu Hao Yang Jie Liao Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China Agronomy soil environmental quality trace elements spatial variation influence factor digital soil mapping |
| title | Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China |
| title_full | Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China |
| title_fullStr | Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China |
| title_full_unstemmed | Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China |
| title_short | Spatial Variation and Influencing Factors of Trace Elements in Farmland in a Lateritic Red Soil Region of China |
| title_sort | spatial variation and influencing factors of trace elements in farmland in a lateritic red soil region of china |
| topic | soil environmental quality trace elements spatial variation influence factor digital soil mapping |
| url | https://www.mdpi.com/2073-4395/12/2/478 |
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