Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region
Abstract The study established experimental transects in undisturbed areas of the Caohai Nature Reserve in Weining, Guizhou Province. The study aims to examine complete successional transects in different landscapes: non-karst, karst, and vegetation restoration, using the spatiotemporal substitution...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-024-84576-w |
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| author | Yunjie Wu Yujie Wu Peiran He Qian Meng Runze Wang Mingyi Zhang Guo Yuan Yue Zhao Xin Tian |
| author_facet | Yunjie Wu Yujie Wu Peiran He Qian Meng Runze Wang Mingyi Zhang Guo Yuan Yue Zhao Xin Tian |
| author_sort | Yunjie Wu |
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| description | Abstract The study established experimental transects in undisturbed areas of the Caohai Nature Reserve in Weining, Guizhou Province. The study aims to examine complete successional transects in different landscapes: non-karst, karst, and vegetation restoration, using the spatiotemporal substitution method. It analyzes the distribution patterns of Total potassium (TK) and Avail potassium (AK) in the soil and employs a Generalized Linear Mixed Model (GLMM) to investigate the effects of geomorphology, soil aggregates, and their interactions on the changes in soil potassium(K) elements. Furthermore, it explores the synergistic effects of K cycling during the vegetation restoration process in karst soils. The findings indicated that: (1) In karst areas, the overall TK content was higher than in non-karst areas, while the AK content in the topsoil was higher in non-karst areas. The TK content in the karst areas tended to approach that of the vegetation restoration zone. (2) After restoration, the dominant plants changed from Gramineae to Gramineae + Asteraceae, and the vegetation richness increased, thereby improving the soil fertility and potassium fixation capacity. (3) The GLMM showed that the karst landscape had a significant effect on the TK and AK contents of surface soil. In the early stage of vegetation restoration, the joint effect of soil and vegetation affected the TK and AK contents in soil. |
| format | Article |
| id | doaj-art-d844e7116b614b32be7e215fe8d1f620 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-d844e7116b614b32be7e215fe8d1f6202025-01-19T12:24:07ZengNature PortfolioScientific Reports2045-23222025-01-0115111610.1038/s41598-024-84576-wSpatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst regionYunjie Wu0Yujie Wu1Peiran He2Qian Meng3Runze Wang4Mingyi Zhang5Guo Yuan6Yue Zhao7Xin Tian8College of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityGuizhou Institute of BiologyGuizhou Provincial Department of Ecology and EnvironmentCollege of Eco-Environmental Engineering, The Institute of Karst Wetland Ecology, Guizhou Minzu UniversityAbstract The study established experimental transects in undisturbed areas of the Caohai Nature Reserve in Weining, Guizhou Province. The study aims to examine complete successional transects in different landscapes: non-karst, karst, and vegetation restoration, using the spatiotemporal substitution method. It analyzes the distribution patterns of Total potassium (TK) and Avail potassium (AK) in the soil and employs a Generalized Linear Mixed Model (GLMM) to investigate the effects of geomorphology, soil aggregates, and their interactions on the changes in soil potassium(K) elements. Furthermore, it explores the synergistic effects of K cycling during the vegetation restoration process in karst soils. The findings indicated that: (1) In karst areas, the overall TK content was higher than in non-karst areas, while the AK content in the topsoil was higher in non-karst areas. The TK content in the karst areas tended to approach that of the vegetation restoration zone. (2) After restoration, the dominant plants changed from Gramineae to Gramineae + Asteraceae, and the vegetation richness increased, thereby improving the soil fertility and potassium fixation capacity. (3) The GLMM showed that the karst landscape had a significant effect on the TK and AK contents of surface soil. In the early stage of vegetation restoration, the joint effect of soil and vegetation affected the TK and AK contents in soil.https://doi.org/10.1038/s41598-024-84576-wKarstPotassiumSoil nutrientEcological factorVegetation restoration |
| spellingShingle | Yunjie Wu Yujie Wu Peiran He Qian Meng Runze Wang Mingyi Zhang Guo Yuan Yue Zhao Xin Tian Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region Scientific Reports Karst Potassium Soil nutrient Ecological factor Vegetation restoration |
| title | Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region |
| title_full | Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region |
| title_fullStr | Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region |
| title_full_unstemmed | Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region |
| title_short | Spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest China’s karst region |
| title_sort | spatial characteristics of soil potassium in the early stage of vegetation restoration and influencing factors in southwest china s karst region |
| topic | Karst Potassium Soil nutrient Ecological factor Vegetation restoration |
| url | https://doi.org/10.1038/s41598-024-84576-w |
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