Research progress on soil amendments for controlling soil erosion in red soil region of southern China
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摘要:
[目的] 分析土壤改良剂在防治南方红壤区土壤侵蚀中的研究进展，为南方红壤区土壤侵蚀防治和管理提供依据。[方法] 基于RStudio和ArcGIS可视化分析工具，构建以“土壤改良剂”“土壤侵蚀”和“南方红壤区”为主题的关键词组合，检索中国知网和Web of Science数据库中1999—2024年发表的相关文献。以发文数量、研究机构、发文期刊、改良剂应用频率、试验方法与施用年限、研究地点以及关键词聚类演变为研究对象，开展定量分析。[结果] ①1999—2024年，利用土壤改良剂防治侵蚀相关文献数量快速增长，反映出学者对该领域的关注不断增强。②秸秆、有机肥和生物炭在提高土壤有机质含量、增强团聚体稳定性及水分保持能力方面表现出显著效果，成为最为频繁使用的材料。③相关研究主要集中在江西、湖南等土壤侵蚀严重的地区。④土壤改良剂分为天然改良剂、合成改良剂、天然—合成共聚物改良剂和生物改良剂4大类，在增强土壤团聚体稳定性、抗侵蚀性能、水分保持能力和生态恢复方面的应用效果显著。[结论] 在南方红壤区，建议未来研究重点关注改良剂与环境因子（如气候、土壤类型等）的交互作用，开发新型复合改良剂，全面评估其长期生态效应，以促进农业生态系统的可持续管理。
Abstract:
[Objective] The research progress of soil conditioners in preventing and controlling soil erosion in the red soil area of southern China was analyzed， in order to provide theoretical references for the control and management of soil erosion in the red soil area of southern China. [Methods] Based on RStudio and ArcGIS visualization tools， Keyword combinations centered on ‘soil amendments’ ‘soil erosion’ and ‘red soil regions of southern China’ were constructed to retrieve relevant literature published between 1999 and 2024 from the China National Knowledge Infrastructure and Web of Science databases. A quantitative analysis was conducted， focusing on the number of publications， research institutions， journals， application frequency of amendments， experimental methods and application durations， study locations， and evolution of keywords. [Results] ① From 1999 to 2024， there was a rapid increase in the number of publications related to soil amendments for erosion control， reflecting the growing interest among researchers in this field. ② Straw， organic fertilizers and biochar emerged as the most frequently used materials because of their effectiveness in improving soil organic matter content， enhancing aggregate stability， and increasing water retention capacity. ③ Related studies were primarily focused on regions with severe soil erosion， such as Jiangxi and Hunan provinces. ④ Soil amendments could be categorized into four major types： natural， synthetic， natural-synthetic copolymer， and biological amendments. The practical effects of soil amendments in enhancing soil aggregate stability， erosion resistance， water retention capacity and ecological restoration were obvious. [Conclusion] In the red soil regions of southern China， future studies should focus on the interaction between improvers and environmental factors （such as climate and soil type）， to develop new types of compound soil amendments， and comprehensively evaluate their long-term ecological effects to promote the sustainable management of agricultural ecosystems.