[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(10):52-57.[doi:10.11942/j.issn1002-2767.2020.10.0052]
重庆城市绿地土壤质量变化趋势分析
- 文献标志码:
- A
- 摘要:
- 为了研究重庆城市绿地土壤的变化趋势,为城市园林规划、园林土壤的合理利用、日常管护以及解决因园林绿地土壤质量下降导致的生态环境问题提供了基础信息、理论依据和技术支撑。本文对2006-2019年在重庆城市累计采集的675份不同类型绿地表层土壤数据进行分析。结果表明:重庆城市绿地土壤pH和容重两个指标呈先增加后降低的趋势,可溶性盐总量呈稳定趋势,有机质、碱解氮、有效磷和速效钾呈先降低后增加的趋势;按照土壤质量合格率来分析,土壤pH、有机质和容重3个指标呈先降低后又逐渐恢复的趋势,碱解氮指标呈逐年增加的趋势,有效磷和速效钾两个指标呈先增加后又逐渐降低的趋势,可溶性盐总量趋于平稳;在2011和2019年重复点位对比中,土壤pH、有效磷、速效钾、容重和可溶性盐总量呈降低的趋势,全磷、有机质、碱解氮、全氮和全钾呈增加的趋势。
参考文献/References:
[1]陈洪.重庆市主城区城市绿地土壤质量评价研究[D].重庆:西南大学,2013.
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备注/Memo
收稿日期:2020-06-28