桂林市公园土壤肥力调查与评价  

Investigation and assessment on park soil fertility in Guilin

作　　者：成兆文[1] 孙晓杰[1] 李冬秀 王嘉捷[1] 李全[1] 赵孝芹[1] 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林市七星景区管理处,广西桂林541004

出　　处：《桂林理工大学学报》2015年第2期370-375,共6页Journal of Guilin University of Technology

基　　金：广西科学研究与技术开发计划项目(桂科攻10123010-16);广西"八桂学者"建设工程专项项目;广西矿冶与环境科学实验中心项目(KH2012ZD004);广西危险废物处置产业化人才小高地项目

摘　　要：采集桂林市5个公园表层土壤（0～20cm），研究了土壤pH、有机质、碱解氮、速效磷、速效钾等肥力特性，参考全国第二次土壤普查分级标准并采用改进的内梅罗指数法综合评价了公园土壤的肥力特征。结果表明：桂林市公园土壤总体上呈弱碱性，pH处于7．5～8．5的土壤占76．92％；土壤有机质、碱解氮和速效钾含量主要分布在Ⅲ、Ⅳ级水平，分别占76．93％、71．80％和82．06％，整体均属于中等水平；土壤速效磷含量主要分布在I、Ⅱ级水平，占74．36％，整体属于高水平。改进的内梅罗指数法评价结果显示：桂林市公园土壤综合肥力指数在1．22～1．69，整体属于中等水平，碱解氮和有机质是各公园的主要限制因子。针对分析结果，建议采用公园植物落叶和化粪池粪渣共堆肥的方式来改良公园土壤。The soil surface samples (0 -20 cm)from five parks were collected in Guilin.The pH,organic matter,available nitrogen,available phosphorus and available potassium were analyzed.The integrated soil fer-tility was evaluated by Nemerow index and classification standard from the second national soil survey.Results indicated that the soil pH was weak,between 7.5 and 8.5.All account for 76.92%.The content of organic matter,available nitrogen and available potassium major distributing in Level Ⅲ and Ⅳ were 76.92%, 71.79% and 82.06%,respectively.And the content of available phosphorus major distributing in Level Ⅰ andⅡ was 74.36%.The soil fertility of five parks was evaluated by modified Nemerow Index.The soil fertility composite index was 1.22 -1.69,at medium fertility level.The major restrictive factors of these five parks are hydrolysis nitrogen content and organic matter content.According to the above analysis,suggestion of aerobic co-composting of park leaves and night soil was put forward to improve the soil fertility.

关 键 词：公园土壤 土壤肥力 内梅罗指数 桂林 

分 类 号：X825[环境科学与工程—环境工程]