贡觉县阿旺乡河道沿岸土壤养分状况分析  

Analysis of Soil Nutrients along the River in Awang Township of Gongjue County

作　　者：拉姆罗珍 袁宏[2] 洛桑塔青 王力[2] 王丽坤[2] Lamuluozhen;YUAN Hong;Luosangtaqing;WANG Li;WANG Likun(Tibet Autonomous Region Geological and Mineral Exploration and Development Bureau,No.6 Geological Brigade,Tibet Lhasa 851400,China;Sichuan Institute of Nuclear Industry Geological Survey,Sichuan Chengdu 610061,China)

机构地区：[1]西藏自治区地质矿产勘查开发局第六地质大队,西藏拉萨851400 [2]四川省核工业地质调查院,四川成都610061

出　　处：《西藏农业科技》2022年第3期74-80,共7页Tibet Journal of Agricultural Sciences

摘　　要：基于地统计学方法分析了贡觉县阿旺乡3条交汇河道沿岸土壤养分状况及空间分布特征,采用主成分分析法(PCA),利用土壤养分综合分值(IFI)对土壤肥力进行综合评价。结果表明:研究区土壤呈酸性,土壤有效磷、交换性钙、有效锌、Ca、Hg、有效铜表现为强变异性,土壤CEC、有机质、N、P、速效钾、有效钙、有效铁、锌、锰、硼、钼含量较丰富,大部分区域土壤IFI在三级及以上水平。总体而言,研究区土壤肥力状况良好。Based on geostatistics, the status and spatial distribution of soil nutrients along the confluence area of three rivers in Awang Township,Gongjue county were analyzed. The soil fertility was comprehensively evaluated by principal component analysis(PCA)and comprehensive score of soil nutrients(IFI). The results showed that the soil in the study area had acidic characteristics. Soil available phosphorus, exchangeable Ca, available Zn, Ca, Hg and available Cu showed strong variability. Soil CEC, organic matter N, P, available K, available Ca, available Fe, Zn, Mn, B and Mo are abundant, and the soil IFI in most areas is at Level 3 or above. Generally speaking, the soil fertility in the study area is good.

关 键 词：土壤 养分 克里金 PCA IFI 

分 类 号：S151.9[农业科学—土壤学]