Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems
Phosphorus (P) availability in soils is often constrained by its accumulation in non-labile phosphorus (NLP) forms, limiting its accessibility to plants. This study examines how soil physical properties, chemical characteristics, and climatic conditions influence phosphorus fractionation and the tra...
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2025-01-01
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| author | Chun Lu Soh Sugihara Satoshi Noma Haruo Tanaka Ryosuke Tajima Shingo Matsumoto Dai Hirose Xueyan Zhang Ning Wang Takuya Ban |
| author_facet | Chun Lu Soh Sugihara Satoshi Noma Haruo Tanaka Ryosuke Tajima Shingo Matsumoto Dai Hirose Xueyan Zhang Ning Wang Takuya Ban |
| author_sort | Chun Lu |
| collection | DOAJ |
| description | Phosphorus (P) availability in soils is often constrained by its accumulation in non-labile phosphorus (NLP) forms, limiting its accessibility to plants. This study examines how soil physical properties, chemical characteristics, and climatic conditions influence phosphorus fractionation and the transformation of NLP into plant-available labile phosphorus (LP). Utilizing global structural equation modeling (SEM), we found that silt content enhances organic phosphorus fractions, including NaHCO<sub>3</sub>-Po and NaOH-Po. In the upper 30 cm of soil, pH decreases the availability of NaHCO<sub>3</sub>-Po and NaOH-Po while stabilizing NLP, highlighting its essential role in phosphorus cycling under acidic conditions. In deeper soil layers, pH facilitates phosphorus mobilization from NLP pools, with effects varying across fractions. Long-term studies on Japanese <i>Vaccinium</i> soils reveal that pH and electrical conductivity (EC) management significantly promote NLP-to-LP conversion, primarily through NaOH-Po, thereby improving phosphorus use efficiency. These findings underscore the critical importance of prioritizing chemical property management over physical modifications to optimize nutrient cycling, preserve soil fertility, and reduce reliance on external phosphorus inputs in agricultural systems. Our study emphasizes the need for integrated approaches to achieve sustainable phosphorus management in both natural and managed ecosystems. |
| format | Article |
| id | doaj-art-4b314e391fcb493fb193900427b3d41b |
| institution | Kabale University |
| issn | 2223-7747 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj-art-4b314e391fcb493fb193900427b3d41b2025-01-24T13:46:41ZengMDPI AGPlants2223-77472025-01-0114218910.3390/plants14020189Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland EcosystemsChun Lu0Soh Sugihara1Satoshi Noma2Haruo Tanaka3Ryosuke Tajima4Shingo Matsumoto5Dai Hirose6Xueyan Zhang7Ning Wang8Takuya Ban9United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, JapanInstitute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, JapanUnited Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, JapanInstitute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, JapanGraduate School of Agricultural Science, Tohoku University, Sendai 980-8572, JapanGraduate School of Natural Science and Technology, Shimane University, Shimane 690-8504, JapanSchool of Pharmacy, Nihon University, Chiba 274-8555, JapanCollege of Agriculture, Ningxia University, Yinchuan 750021, ChinaNingxia Baixin Agriculture Technology Development Co., Ltd., Yinchuan 750021, ChinaUnited Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, JapanPhosphorus (P) availability in soils is often constrained by its accumulation in non-labile phosphorus (NLP) forms, limiting its accessibility to plants. This study examines how soil physical properties, chemical characteristics, and climatic conditions influence phosphorus fractionation and the transformation of NLP into plant-available labile phosphorus (LP). Utilizing global structural equation modeling (SEM), we found that silt content enhances organic phosphorus fractions, including NaHCO<sub>3</sub>-Po and NaOH-Po. In the upper 30 cm of soil, pH decreases the availability of NaHCO<sub>3</sub>-Po and NaOH-Po while stabilizing NLP, highlighting its essential role in phosphorus cycling under acidic conditions. In deeper soil layers, pH facilitates phosphorus mobilization from NLP pools, with effects varying across fractions. Long-term studies on Japanese <i>Vaccinium</i> soils reveal that pH and electrical conductivity (EC) management significantly promote NLP-to-LP conversion, primarily through NaOH-Po, thereby improving phosphorus use efficiency. These findings underscore the critical importance of prioritizing chemical property management over physical modifications to optimize nutrient cycling, preserve soil fertility, and reduce reliance on external phosphorus inputs in agricultural systems. Our study emphasizes the need for integrated approaches to achieve sustainable phosphorus management in both natural and managed ecosystems.https://www.mdpi.com/2223-7747/14/2/189structural equation modeling (SEM)phosphorus fractionationnon-labile phosphorus (NLP)labile phosphorus (LP) |
| spellingShingle | Chun Lu Soh Sugihara Satoshi Noma Haruo Tanaka Ryosuke Tajima Shingo Matsumoto Dai Hirose Xueyan Zhang Ning Wang Takuya Ban Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems Plants structural equation modeling (SEM) phosphorus fractionation non-labile phosphorus (NLP) labile phosphorus (LP) |
| title | Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems |
| title_full | Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems |
| title_fullStr | Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems |
| title_full_unstemmed | Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems |
| title_short | Phosphorus Dynamics in Managed and Natural Soils: SEM-PLS Analysis of <i>Vaccinium</i>, Forest, and Grassland Ecosystems |
| title_sort | phosphorus dynamics in managed and natural soils sem pls analysis of i vaccinium i forest and grassland ecosystems |
| topic | structural equation modeling (SEM) phosphorus fractionation non-labile phosphorus (NLP) labile phosphorus (LP) |
| url | https://www.mdpi.com/2223-7747/14/2/189 |
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