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[1]Liu Fang,Xia Dong,Ma Jiaxin,et al.Change Characteristics of Organic Carbon Components and Stoichiometric Ratios of Carbon, Nitrogen and Phosphorus in the Early Stage of Vegetation Succession in Artificial Slope Restoration[J].Research of Soil and Water Conservation,2024,31(02):68-75.

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Change Characteristics of Organic Carbon Components and Stoichiometric Ratios of Carbon, Nitrogen and Phosphorus in the Early Stage of Vegetation Succession in Artificial Slope Restoration

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 02 Page number: 68-75 Column: Public date: 2024-03-20

Title:: Change Characteristics of Organic Carbon Components and Stoichiometric Ratios of Carbon, Nitrogen and Phosphorus in the Early Stage of Vegetation Succession in Artificial Slope Restoration

Author(s):: Liu Fang^1,3, Xia Dong^1,3,4, Ma Jiaxin^3,4, Luo Ting^2,3, Yan Shuxing^1,3, Zhang Sen⁵; (1.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, China; 2.College of Civil Engineering & Architecture, China Three Gorges University, Yichang, Hubei 443002, China; 3.Hubei Engineering Research Center of Cement-based Ecological Restoration Technology, Three Gorges University, Yichang, Hubei 443002, China; 4.College of Biological & Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, China; 5.College of......)

Keywords:: early stage of succession; manually repaired slope; organic carbon component; carbon; nitrogen and phosphorus content; stoichiometric ratio of carbon; nitrogen and phosphorus

CLC:: X825

DOI:: -

Abstract:: [Objective] The aims of this study are to study the effects of climate factors on soil organic carbon components, carbon, nitrogen and phosphorus contents and their stoichiometric ratios in the early stage of artificial slope restoration, to reveal the effects of climate factors on soil organic carbon components, carbon, nitrogen and phosphorus contents and their stoichiometric ratios in the early stage of artificial slope restoration, and to provide guidance and suggestions for the maintenance of artificial slope restoration in the later stage and ensure the positive succession of artificial slope restoration. [Methods] Slope soil samples artificially repaired by vegetated concrete with the same initial base material preparation and similar plant preparation were collected from Zhanjiang, Wuzhou, Yichang, Nanyang, Jiaozuo, Weifang and Jiacha. Data of organic carbon components, carbon, nitrogen and phosphorus of soil samples were obtained through determination. Redundancy analysis was adopted. The effects of climate factors on soil organic carbon component, carbon, nitrogen and phosphorus content and stoichiometric ratio in the early stage of slope restoration were studied. [Results] The F₁ content of artificial repaired slope varied from 1.10 to 3.64 g/kg at the initial stage of succession. The variation range of F₂ content was 1.33 ～ 3.04 g/kg. The content of F₃ varied from 2.02 to 3.34 g/kg. The content of F₄ ranged from 10.86 to 15.24 g/kg. TOC content ranged from 15.52 to 24.71 g/kg. TN content ranged from 0.61 to 0.93 g/kg. TP content ranged from 0.81 to 1.22 g/kg. C:N ranged from 23.55 to 27.95. C:P ranged from 17.26 to 23.09. N:P ranged from 0.72 to 0.98. C:N:P ranged from 17.26:0.75:1 to 24.81:0.95:1. [Conclusion] In the early stage of the artificial restoration slope, carbon and phosphorus are medium and above, and nitrogen is insufficient. The organic carbon component is mainly inert organic carbon and the organic carbon has strong stability. The main influencing factors on organic carbon components were mean annual temperature, species richness and mean annual precipitation. The main factors affecting soil carbon, nitrogen and phosphorus contents and their stoichiometric ratios were annual mean temperature, species richness, pH and bulk density.

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Last Update: 2024-04-20