不同土地利用类型下土壤养分在土壤剖面中的分布特征

摘要

[ Objective ] The research aimed to study the effects of land use on soil nutrients distribution and seasonal variation in different profile, [ Method] The impacts of land use types on soil nutrients conditions were analyzed systematically in Chaihe Basin. [ Result] Soil total nitrogen , total phosphorus, organic matter were significantly affected by land use, and the contents of facility agriculture and traditional agriculture were the highest. The profile distribution of total nitrogen, total phosphorus, organic matter generally presented a declining trend, and the declining trend of facility agriculture and traditional agriculture were stronger. [ Conclusion ] Season had significant influence on soil nutrient content.%[目的]研究土地利用方式和季节变化对土壤养分剖面分布的影响.[方法]以柴河流域为例,系统分析了设施农业、传统农业、林地、坡耕地、落荒地5种土地利用方式下土壤养分状况.[结果]不同土地利用方式对土壤全氮、全磷、有机质含量有显著的影响,以传统农业和设施农业含量最高.不同土地利用方式土壤养分由表层至底层呈下降趋势,尤以设施农业和传统农业2种受人类活动影响剧烈类型土壤下降更快.[结论]季节对土壤养分含量有显著影响.