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[1]Bai Yonghui,Zha Xuan,Wu Weicheng,et al.Characteristics of Soil Particle Composition and Soil Nutrient Storage in Vegetated Granite Red Soil[J].Research of Soil and Water Conservation,2024,31(03):179-186.[doi:10.13869/j.cnki.rswc.2024.03.046]

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Characteristics of Soil Particle Composition and Soil Nutrient Storage in Vegetated Granite Red Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 03 Page number: 179-186 Column: Public date: 2024-04-30

Title:: Characteristics of Soil Particle Composition and Soil Nutrient Storage in Vegetated Granite Red Soil

Author(s):: Bai Yonghui^1,2, Zha Xuan³, Wu Weicheng¹, Zhou Feihua³; (1.Key Laboratory of Digital Lands and Resources of Jiangxi Province, East China University of Technology, Nanchang 330013, China; 2.School of Earth Sciences, East China University of Technology, Nanchang 330013, China; 3.School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China)

Keywords:: vegetation restoration model; soil particle composition; soil nutrient storage; granite red soil; erosion-degraded land

CLC:: S152.7

DOI:: 10.13869/j.cnki.rswc.2024.03.046

Abstract:: [Objective] The aims of this study are to investigate the relationship between soil particle composition and soil nutrients and the storage characteristics of soil nutrients under vegetation restoration of granite red soil, and to provide theoretical basis and practical guidance for vegetation restoration of granite red soil erosion and degradation. [Methods] Five vegetation restoration modes(ASG, CC, FSG, GGH, IFT), highly degraded land(HDL)and natural vegetation(NV)were selected as survey plots. The relationship between soil particle composition and soil nutrients and the characteristics of soil nutrient storage under vegetation restoration model were clarified, and the indicators of nutrient recovery in degraded red soil after vegetation restoration were identified by using field investigation and laboratory test method. [Results] Soil particle composition of 0—5 cm layer in granite degraded soil was improved by planting restoration model. The redundancy analysis showed that there was a significant positive correlation between soil clay and soil nutrients. The nutrient contents and reserves of soil organic carbon, total nitrogen, total potassium, available potassium, total phosphorus and available phosphorus in the red soil degraded land of 0—5 cm were increased by planting restoration mode. The organic carbon content of soil 0—5 cm and the organic carbon storage of soil 0—60 cm were in the same order as the total nutrient storage of soil 0—60 cm, the order was ASG>GGH> FSG>IFT>CC. [Conclusion] Soil clay is the key factor to increase soil nutrient content in 0—5 cm soil layer. Soil organic matter is an intuitive index to identify soil nutrient status in vegetation restoration mode. ASG is the best model to improve soil particle composition, increase soil nutrient contents, and soil nutrient storage.

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Last Update: 2024-04-30