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园林绿化废弃物覆盖对城市绿地土壤肥力影响

杜田甜 孙向阳 李素艳 周伟 郑燚 范志辉

杜田甜, 孙向阳, 李素艳, 周伟, 郑燚, 范志辉. 园林绿化废弃物覆盖对城市绿地土壤肥力影响[J]. 北京林业大学学报, 2021, 43(10): 110-117. doi: 10.12171/j.1000-1522.20200402
引用本文: 杜田甜, 孙向阳, 李素艳, 周伟, 郑燚, 范志辉. 园林绿化废弃物覆盖对城市绿地土壤肥力影响[J]. 北京林业大学学报, 2021, 43(10): 110-117. doi: 10.12171/j.1000-1522.20200402
Du Tiantian, Sun Xiangyang, Li Suyan, Zhou Wei, Zheng Yi, Fan Zhihui. Effects of landscaping waste mulching on soil fertility of urban green space[J]. Journal of Beijing Forestry University, 2021, 43(10): 110-117. doi: 10.12171/j.1000-1522.20200402
Citation: Du Tiantian, Sun Xiangyang, Li Suyan, Zhou Wei, Zheng Yi, Fan Zhihui. Effects of landscaping waste mulching on soil fertility of urban green space[J]. Journal of Beijing Forestry University, 2021, 43(10): 110-117. doi: 10.12171/j.1000-1522.20200402

园林绿化废弃物覆盖对城市绿地土壤肥力影响

doi: 10.12171/j.1000-1522.20200402
基金项目: 北京市自然科学基金项目(6202021)
详细信息
    作者简介:

    杜田甜。主要研究方向:土壤生态。Email:371799084@qq.com 地址:100083 北京市海淀区清华东路35号北京林业大学林学院

    责任作者:

    孙向阳,教授,博士生导师。主要研究方向:土壤学。Email: sunxy@bjfu.edu.cn 地址:同上

  • 中图分类号: S714.5

Effects of landscaping waste mulching on soil fertility of urban green space

  • 摘要:   目的  本研究旨在探讨园林绿化废弃物覆盖对城市绿地土壤肥力影响,以期为园林绿化废弃物资源化利用解决城市绿地土壤问题提供依据。  方法  本研究以北京市典型城市绿地土壤−圆明园为研究对象,通过野外试验设置4种不同处理:不覆盖(CK)、上层木片 + 下层堆置15 d的园林绿化废弃物堆肥(处理A)、上层木片 + 下层堆置30 d的园林绿化废弃物堆肥(处理B)、上层木片 + 下层堆置60 d的园林绿化废弃物堆肥(处理C),进行室内分析测定,结合修正的内梅罗指数法计算土壤综合肥力指数,运用Pearson相关性及逐步回归分析,分析不同覆盖处理对土壤综合肥力的影响。  结果  0 ~ 10 cm土层中,C覆盖处理显著提高土壤有效磷、速效钾含量(P < 0.05);10 ~ 20 cm土层中,C覆盖处理显著提高土壤速效钾含量(P < 0.05)。土壤综合肥力指数显示,C覆盖处理显著提高0 ~ 10 cm土层的综合肥力(P < 0.05)。修正的内梅罗指数法中Fimin值及逐步回归分析表明,土壤综合肥力限制因子为土壤密度及有效磷,土壤综合肥力最主要影响因子为有机质,其次为土壤有效磷及土壤密度。  结论  综上,园林绿化废弃物覆盖对土壤理化性质及综合肥力有不同程度的影响,结果显示处理C为最佳覆盖方案,今后研究中要着重注意土壤肥力主要影响因子(土壤有机质、土壤密度及有效磷)的动态变化及改善。

     

  • 图  1  不同处理土壤肥力因子特征

    图柱上方大写字母表示不同处理在0 ~ 10 cm土层差异显著性(P < 0.05),小写字母表示不同处理在10 ~ 20 cm土层差异显著性(P < 0.05)。下同。Uppercase letters on the bar indicat significant difference between varied treatments in 0−10 cm soil layer (P < 0.05), while lowercase letters indicate significant difference between varied treatments in 10−20 cm soil layer (P < 0.05). The same below.

    Figure  1.  Characteristics of soil fertility factors under different treatments

    表  1  供试土壤不同土层主要理化性质

    Table  1.   Main physicochemical properties of different soil layers of the tested soil

    深度
    Depth/cm
    土壤密度
    Soil bulk density
    (BD)/(g·cm−3)
    pH有机质
    Soil organic matter
    (SOM)/(g·kg−1)
    全氮
    Total nitrogen
    (TN)/(g·kg−1)
    碱解氮
    Available nitrogen
    (AN)/(mg·kg−1)
    有效磷
    Available phosphorus
    (AP)/(mg·kg−1)
    速效钾
    Available potassium
    (AK)/(mg·kg−1)
    0 ~ 101.538.0121.920.89148.451.64200.40
    10 ~ 201.688.0116.460.73 95.964.32112.02
    下载: 导出CSV

    表  2  土壤养分含量分级标准

    Table  2.   Classification criterion of soil nutrients

    级别 GradeSOM/(g·kg−1)TN/(g·kg−1)AN/(mg·kg−1)AP/(mg·kg−1)AK/(mg·kg−1)评价 Evaluation
    1 > 40 > 2.00 > 150 > 40 > 200 很高 Very high
    2 30 ~ 40 1.50 ~ 2.00 120 ~ 150 20 ~ 40 150 ~ 200 高 High
    3 20 ~ 30 1.00 ~ 1.50 90 ~ 120 10 ~ 20 100 ~ 150 中上 Slightly above average
    4 10 ~ 20 0.75 ~ 1.00 60 ~ 90 5 ~ 10 50 ~ 100 中下 Slightly below average
    5 6 ~ 10 0.50 ~ 0.75 30 ~ 60 3 ~ 5 30 ~ 50 低 Low
    6 < 6 < 0.50 < 30 < 3 < 30 很低 Very low
    下载: 导出CSV

    表  3  不同处理土壤各属性肥力系数与综合肥力系数

    Table  3.   Soil property fertility coefficient and comprehensive fertility coefficient of different treatments

    处理 Treatment深度 Depth/cmFi$ {\overline F_i}$F
    SOMBDpHANAPAKTN
    A 0 ~ 10 2.573 1.715 2.043 2.839 0.728 3.000 1.777 2.096 1.346AB
    10 ~ 20 2.005 1.334 1.620 1.972 0.509 3.000 1.284 1.675 1.061a
    B 0 ~ 10 2.756 1.143 2.063 2.918 0.885 3.000 1.934 2.100 1.374AB
    10 ~ 20 1.901 0.941 1.760 1.956 0.383 2.918 1.295 1.594 1.004a
    C 0 ~ 10 2.527 1.376 1.910 2.898 1.200 3.000 1.600 2.073 1.428A
    10 ~ 20 2.201 1.226 1.787 2.011 0.679 2.844 1.406 1.736 1.134a
    CK 0 ~ 10 2.192 0.976 1.947 2.440 0.346 3.000 1.418 1.760 1.088B
    10 ~ 20 1.709 0.880 1.940 1.644 0.970 2.036 1.116 1.471 1.018a
    注:F为土壤综合肥力指数,Fi为土壤各个肥力指标的分肥力指数,$ {\overline F_i}$为土壤各个肥力指标的分肥力指数平均值。Notes: F is the comprehensive soil fertility index, Fi is the fertility index of each fertility index of the soil, and $ {\overline F_i}$ is the average value of fertility index of each fertility index of soil.
    下载: 导出CSV

    表  4  覆盖处理及土层深度的双因素分析

    Table  4.   Two-factor analysis of mulch treatment and soil depth

    指标
    Index
    覆盖处理
    Mulching treatment (M)
    深度
    Depth (D)
    M × D
    SOM 0.106 0.000** 0.507
    BD 0.085 0.015* 0.579
    pH 0.498 0.002** 0.091
    AN 0.132 0.000** 0.899
    AP 0.187 0.193 0.008**
    AK 0.000** 0.000** 0.025*
    TN 0.08 0.000** 0.367
    F 0.085 0.000** 0.553
    注:*表示差异水平显著(P < 0.05);**表示差异水平极显著(P < 0.01)。Notes: * indicates significant difference (P < 0.05); ** indicates extremely significant difference (P < 0.01).
    下载: 导出CSV

    表  5  土壤各指标之间相关性

    Table  5.   Correlations among soil indexes

    指标 IndexSOMBDPHANAPAKTNF
    SOM 1
    BD −0.581** 1
    PH −0.508* 0.025 1
    AN 0.844** −0.470* −0.581** 1
    AP 0.396 −0.140 −0.318 0.286 1
    AK 0.631** −0.554** −0.321 0.725** 0.344 1
    TN 0.929** −0.417* −0.585** 0.896** 0.356 0.626** 1
    F 0.995** −0.591** −0.517** 0.847** 0.466* 0.655** 0.922** 1
    注:*表示显著相关(P < 0.05);**表示极显著相关(P < 0.01)。Notes: * indicates significant correlation (P < 0.05); ** indicates extremely significant correlation (P < 0.01).
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-12-17
  • 修回日期:  2021-05-10
  • 网络出版日期:  2021-09-16
  • 刊出日期:  2021-10-30

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