The effects of soil and water conservation （SWC） on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lack...The effects of soil and water conservation （SWC） on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lacking for hilly red soil region of southern China. Experiments were conducted in the hilly red soil region of southern China for seven years in three rtmoffplots, each of which represented different SWC forest-grass measures. Principal component analysis and multiple regression techniques were used to relate the aboveground biomass （representing soil productivity） to soil properties. Based on the final regression equations, soil organic carbon content （Sot） is significantly correlated with soil productivity under the condition of forest-grass measures, whereas pH value and cation exchange capacity （Cee） are the main factors for soil productivity without SWC. Therefore, SWC plays an important role in sequestering Soc and improving soil productivity.展开更多
[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...[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。展开更多
基金Project(40971170) supported by the National Natural Science Foundation of ChinaProject(NCET-09-330) supported by the Program for New Century Excellent Talents in University of China
文摘The effects of soil and water conservation （SWC） on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lacking for hilly red soil region of southern China. Experiments were conducted in the hilly red soil region of southern China for seven years in three rtmoffplots, each of which represented different SWC forest-grass measures. Principal component analysis and multiple regression techniques were used to relate the aboveground biomass （representing soil productivity） to soil properties. Based on the final regression equations, soil organic carbon content （Sot） is significantly correlated with soil productivity under the condition of forest-grass measures, whereas pH value and cation exchange capacity （Cee） are the main factors for soil productivity without SWC. Therefore, SWC plays an important role in sequestering Soc and improving soil productivity.
文摘[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。
