地质通报2025，Vol.44Issue(7)：1294-1312,19.DOI:10.12097/gbc.2023.09.030
基于因子分析的广西平果市土壤地球化学分区及农业种植建议
Soil geochemical zoning based on factor analysis and recommendations for agricultural planting in Pingguo City,Guangxi
摘要
Abstract
This paper is the result of land geochemistry engineering.[Objective]This study aims to explore how to extract useful geochemical information from land quality geochemical survey data,which feature multiple analysis indicators and a large volume of information,and to provide recommendations for agricultural planting.[Methods]Factor analysis was conducted on the topsoil data from the 1∶250 000 land quality geochemical survey in Pingguo City,Guangxi.The main factors were extracted,and the samples were classified based on their factor scores.The geochemical zoning was subsequently carried out according to their spatial distribution characteristics.[Results]In the topsoil of the study area,40 indicators showed significant enrichment,and the average values of 44 indicators in karst areas were significantly higher than those in non-karst areas.A total of six geochemical zones were delineated.In the F1 area,37 indicators exhibited enrichment,reflecting the influence of carbonate rock parent materials and it is advisable to prioritize the development of agriculture with minimal environmental disturbance,such as economic forests and orchards.In the F2 area,biophilic elements exhibited enrichment,reflecting biogeochemical processes and anthropogenic factors,and it is recommended to focus on developing agriculture such as vegetables and tropical fruits.In the F3 area,low-temperature ore-forming elements exhibited enrichment,reflecting the influence of tectonic activity and mineralization,and it is suitable to develop agriculture such as economic forests,vegetables,and tropical fruits,taking local conditions into account.In the F4 area,Mo and Se exhibited enrichment,and further evaluation and development of selenium rich land resources can be carried out.In the F5 area,F and MgO exhibited enrichment,and it is advisable to prioritize the development of economic forests and water conservation forests.In the F6 area,39 indicators exhibited depletion,reflecting the influence of detrital rock parent materials,and it is advisable to develop agriculture such as economic forests,vegetables,and tropical fruits,taking local conditions into account.[Conclusions]Soil geochemical zoning based on factor analysis provides a"window"for understanding the geochemical distribution characteristics of soil elements from a macro perspective.It also offers a scientific basis for planting area planning,adjustment of agricultural planting structures,and development of characteristic agricultural products.关键词
因子分析/地球化学分区/土地质量地球化学调查/农业种植/岩溶/广西平果市Key words
factor analysis/geochemical zoning/land quality geochemical survey/agricultural planting/karst/Pingguo City,Guangxi分类
天文与地球科学引用本文复制引用
胡兆鑫,罗为群,谢运球,汤庆佳..基于因子分析的广西平果市土壤地球化学分区及农业种植建议[J].地质通报,2025,44(7):1294-1312,19.基金项目
国家重点研发计划课题《峰丛洼地关键带水土资源生态调控技术》(编号:2022YFF1300702)、中国地质调查局项目《滇黔桂岩溶区土地质量地球化学调查》(编号:DD20160324)、《南方岩溶区石漠化生态地质调查》(编号:DD20230453)、广西科技基地和人才专项《百色平果喀斯特生态系统广西野外科学观测研究站(科研能力建设)》(编号:桂科22-035-130-05) Supported by the projects of National Key Research and Development Program of China(No.2022YFF1300702),China Geological Survey(No.DD20160324,No.DD20230453)and Guangxi Scientific Base and Talents Project(No.Guike 22-035-130-05) （编号:2022YFF1300702）
