基于最小数据集的油茶林土壤质量评价  

Soil Quality Evaluation of Youcha(Camellia)Forests Based on Minimum Data Set

作　　者：罗蜜 潘波[3] 王会利[3] 劳贵连 方贵凤 江海涛 Luo Mi;Pan Bo;Wang Huili;Lao Guilian;Fang Guifeng;Jiang Haitao(Key Laboratory of Environment Change and Resources Use in Beibu Gulf,Ministry of Education,Nanning Normal University,Nanning,Guangxi 530001,China;Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation,Nanning Normal University,Nanning,Guangxi 530001,China;Guangxi Forestry Research Institute,Nanning,Guangxi 530002,China;Beihai City Government Service Center,Beihai,Guangxi 536000,China;Guangxi State-owned Weidu Forest Farm,Laibin,Guangxi 546100,China)

机构地区：[1]南宁师范大学,北部湾环境演变与资源利用教育部重点实验室,广西南宁530001 [2]南宁师范大学,广西地表过程与智能模拟重点实验室,广西南宁530001 [3]广西壮族自治区林业科学研究院,广西南宁530002 [4]北海市政务服务中心,广西北海536000 [5]广西壮族自治区国有维都林场,广西来宾546100

出　　处：《广西林业科学》2024年第4期438-446,共9页Guangxi Forestry Science

基　　金：中央引导地方科技发展资金项目(桂科ZY21195026);广西林业科技项目(桂林科字[2021]第3号);科技创新基地建设项目(桂科ZY21195026);广西科技基地和人才专项项目(桂科AD23026073)。

摘　　要：为给油茶(Camellia)林土壤质量提升和改善提供理论支撑,测定土壤pH值及有机质、全氮、全磷、全钾、水解氮、有效磷、速效钾、代换性钙、代换性镁、有效铜、有效锌、有效硼、有效铁和有效锰含量,采用主成分分析法和聚类分析法建立最小数据集,基于土壤质量指数(SQI)对油茶林土壤质量进行评价。结果表明,油茶林养分属于中等水平,土壤pH值为4.77,酸化现象明显。基于主成分分析法建立最小数据集的评价指标包括全氮、有效磷、代换性镁、有效铜和有效锰含量。基于主成分分析法建立最小数据集计算的油茶林SQI为0.249~0.684,均值为0.459,土壤质量等级以Ⅱ~Ⅴ级为主,无Ⅰ级土壤。与聚类分析法相比,基于主成分分析法建立最小数据集能提取大部分数据信息,可有效评价油茶林土壤质量。In order to provide theoretical support for enhancement and improvement of soil qualities of Youcha(Camellia)forests,soil pH and contents of organic matter,total nitrogen,total phosphorus,total potassium,hydrolyzable nitrogen,available phosphorus,available potassium,substitutional calcium,substitutional magnesium,available copper,available zinc,available boron,available iron and available manganese were determined.Principal component analysis(PCA)and cluster analysis(CA)were used to establish minimum data sets.Soil quality of Youcha forests was evaluated based on soil quality index(SQI).Results showed that nutrients in Youcha forests belonged to medium levels.Soil pH value was 4.77,with obvious acidification.Evaluation indexes in minimum data set established by PCA included contents of total nitrogen,available phosphorus,substitutional magnesium,available copper and available manganese.SQI of Youcha forests calculated by minimum data set established by PCA ranged from 0.249 to 0.684,with mean of 0.459.Soil quality level mainly distributed fromⅡtoⅤ,without levelⅠ.Minimum data set established by PCA could extract most of data information compared with CA and could effectively evaluate soil quality of Youcha forests.

关 键 词：主成分分析 聚类分析 最小数据集 土壤质量指数 油茶林 

分 类 号：S715.3[农业科学—林学]