人工修复边坡植被演替初期有机碳组分及土壤生态化学计量特征  

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

作　　者：刘芳 夏栋[1,3,4] 马佳鑫[3,4] 罗婷 闫书星 张森 Liu Fang;Xia Dong;Ma Jiaxin;Luo Ting;Yan Shuxing;Zhang Sen(College of Hydraulic&Environmental Engineering,China Three Gorges University,Yichang,Hubei 443002,China;College of Civil Engineering&Architecture,China Three Gorges University,Yichang,Hubei 443002,China;Hubei Engineering Research Center of Cement-based Ecological Restoration Technology,Three Gorges University,Yichang,Hubei 443002,China;College of Biological&Pharmaceutical Sciences,China Three Gorges University,Yichang,Hubei 443002,China;College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan,Hebei 063210,China)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]三峡大学土木与建筑学院,湖北宜昌443002 [3]三峡大学水泥基生态修复技术湖北省工程研究中心,湖北宜昌443002 [4]三峡大学生物与制药学院,湖北宜昌443002 [5]华北理工大学建筑工程学院,河北唐山063210

出　　处：《水土保持研究》2024年第2期68-75,共8页Research of Soil and Water Conservation

基　　金：内蒙古自治区科技重大专项课题“改性湖泊底泥协同寒旱地区堆填场生态修复技术研究”(2021ZD0007-03);国家自然科学基金面上项目“干旱-碱性环境下丛枝菌根对植被混凝土生态修复植物抗逆性的影响”(51979147)。

摘　　要：[目的]研究人工修复边坡演替初期土壤有机碳组分、碳氮磷含量及其化学计量比,揭示气候因子对人工修复边坡演替初期土壤有机碳组分、碳氮磷含量及其化学计量比的影响,以期为后期人工修复边坡的养护提供指导和建议,确保人工修复边坡的正向演替。[方法]在湛江、梧州、宜昌、南阳、焦作、潍坊、加查采集了初期基材配制相同、植物配制相近,修复年限为2~4年的植被混凝土人工修复边坡土样,通过实验获得土样有机碳组分、碳、氮、磷的数据,采用冗余分析,开展气候因子对人工修复边坡演替初期土壤有机碳组分、碳氮磷含量及其化学计量比的影响研究。[结果]人工修复边坡演替初期F_(1)含量的变化范围为1.10~3.64 g/kg;F_(2)含量的变化范围为1.33~3.04 g/kg;F_(3)含量的变化范围为2.02~3.34 g/kg;F_(4)含量的变化范围为10.86~15.24 g/kg;TOC含量变化范围为15.52~24.71 g/kg;TN含量变化范围为0.61~0.93 g/kg;TP含量的变化范围为0.81~1.22 g/kg;C∶N变化范围为23.55~27.95;C∶P变化范围为17.26~23.09;N∶P的变化范围为0.72~0.98;C∶N∶P的变化范围为17.26∶0.75∶1~24.81∶0.95∶1。[结论]演替初期人工修复边坡碳磷表现为中等及以上,氮表现为缺乏;有机碳组分以惰性有机碳为主且有机碳稳定性较强。有机碳组分的主要影响因子为年平均温度、物种丰富度和年平均降水;土壤碳氮磷含量及其化学计量比主要影响因子为年平均温度、物种丰富度、pH和容重。[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 F_(1) content of artificial repaired slope varied from 1.10 to 3.64 g/kg at the initial stage of succession.The variation range of F_(2) content was 1.33~3.04 g/kg.The content of F_(3) varied from 2.02 to 3.34 g/kg.The content of F_(4) 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 ann

关 键 词：演替初期 人工修复边坡 有机碳组分 碳氮磷含量 碳氮磷化学计量比 

分 类 号：X825[环境科学与工程—环境工程]