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杉木人工林土壤氮矿化对长期氮添加和季节的响应

杨仕明 蔡乾坤 刘文飞 吴建平

杨仕明, 蔡乾坤, 刘文飞, 吴建平. 杉木人工林土壤氮矿化对长期氮添加和季节的响应[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20210403
引用本文: 杨仕明, 蔡乾坤, 刘文飞, 吴建平. 杉木人工林土壤氮矿化对长期氮添加和季节的响应[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20210403
YANG Shiming, CAI Qiankun, LIU Wenfei, WU Jianping. Response of soil N mineralization to long-term N addition and season in Cunninghamia lanceolata plantation[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20210403
Citation: YANG Shiming, CAI Qiankun, LIU Wenfei, WU Jianping. Response of soil N mineralization to long-term N addition and season in Cunninghamia lanceolata plantation[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20210403

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杉木人工林土壤氮矿化对长期氮添加和季节的响应

doi: 10.11833/j.issn.2095-0756.20210403
基金项目: 国家自然科学基金资助项目(31570444,31360175);江西省教育厅科技项目(KJLD12097,GJJ14744)
详细信息
    作者简介: 杨仕明(ORCID: 0000-0003-1600-7365),从事全球变化生态学和土壤生态学研究。E-mail: 1571166316@qq.com
    通信作者: 吴建平(ORCID: 0000-0002-5784-834X),教授,博士生导师,从事全球变化生态学和土壤生态学研究。E-mail: jianping.wu@ynu.edu.cn
  • 中图分类号: S718.5

Response of soil N mineralization to long-term N addition and season in Cunninghamia lanceolata plantation

  • 摘要:   目的  探讨长期氮沉降和季节变化对杉木Cunninghamia lanceolata人工林无机氮及氮素转化速率的影响。  方法  以福建省三明市沙县官庄国有林场亚热带人工杉木林为研究对象,开展长期(10 a)氮添加梯度(对照:N0;低氮:N1;中氮:N2;高氮:N3)野外控制实验,通过野外原位培养方法测定氮添加对净氮矿化、硝化和淋溶的影响。  结果  ①氮添加显著提高了铵态氮(NH4 +-N)、硝态氮(NO3 -N) 和总无机氮质量分数,从大到小均呈现为N3、N2、N1、N0的趋势,且铵态氮质量分数均高于硝态氮。②氮素转化速率随氮添加梯度而增大,高氮显著促进了氮素转化(P<0.05)。③季节显著影响氮素转化(P<0.05),净氮矿化速率、硝化速率与淋溶速率均表现为夏季高、冬季低的季节动态。  结论  氮添加显著增加了土壤无机氮与氮素转化速率,土壤pH、碳氮比(C/N)和土壤温度可能是研究区氮添加驱动氮素转化的主要因子。在杉木人工林的经营与管理中需要更多关注土壤养分和氮素转化速率对外源氮输入的响应。图2表3参40
  • 图  1  0~10 cm土层铵态氮、硝态氮和无机氮质量分数

    Figure  1  Mass fractions of ammonium, nitrate and inorganic N in 0−10 cm soil layer

    图  2  0~10 cm土层土壤净氮矿化速率、硝化速率和淋溶速率

    Figure  2  Soil N mineralization, nitrification and leaching rates in the 0−10 cm soil layer

    表  1  不同氮添加处理土壤主要理化和养分性质

    Table  1.   Main soil physicochemical and nutrient properties under different N addition

    处理pH有机质/(g∙kg−1)全氮/(g∙kg−1)C/N铵态氮/(mg∙kg−1)
    N04.28±0.19 a30.57±2.89 a1.35±0.14 c13.3±2.0 a27.14±4.58 d
    N14.14±0.24 b27.13±3.07 b1.57±0.17 b10.1±1.4 b32.19±6.56 c
    N24.00±0.22 c26.82±3.19 b1.62±0.19 ab 9.7±1.7 bc39.13±6.35 b
    N33.85±0.16 d25.32±3.34 b1.67±0.18 a 8.9±1.7 cd44.51±6.25 a
    处理铵态氮比例/%硝态氮/(mg∙kg−1)硝态氮比例/%铵态氮/硝态氮无机氮/(mg∙kg−1)
    N068.912.27±2.51 d31.12.239.41±4.79 d
    N163.018.67±3.76 c37.01.750.86±7.55 c
    N263.023.51±5.49 b37.01.762.64±6.78 b
    N358.431.67±5.12 a41.61.476.17±8.26 a
      说明:数值为平均值±标准误,同列不同字母表示差异显著(P<0.05),铵态氮比例为铵态氮占无机氮比例,硝态氮比例为硝态氮占     无机氮比例
    下载: 导出CSV

    表  2  氮添加和季节影响氮质量分数的双因素方差分析

    Table  2.   Effects of N addition, season, and their interactions on N mass fraction as indicated by two-way ANOVAs

    处理
    P
    铵态氮硝态氮无机氮
    氮添加   0.000*0.000*0.000*
    季节    0.015*0.005*0.889
    氮添加×季节0.9940.9440.999
      说明:*表示处理间差异显著(P<0.05)
    下载: 导出CSV

    表  3  氮添加和季节影响氮素转化速率的双因素方差分析

    Table  3.   Effects of N addition, season, and their interactions on N transformation rates as indicated by two-way ANOVAs

    处理
    P
    矿化速率硝化速率淋溶速率
    氮添加   0.000*0.001*0.042*
    季节    0.000*0.000*0.000*
    氮水平×季节0.012*0.6930.955
      说明:*表示处理间差异显著(P<0.05)
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-01
  • 修回日期:  2021-08-14

杉木人工林土壤氮矿化对长期氮添加和季节的响应

doi: 10.11833/j.issn.2095-0756.20210403
    基金项目:  国家自然科学基金资助项目(31570444,31360175);江西省教育厅科技项目(KJLD12097,GJJ14744)
    作者简介:

    杨仕明(ORCID: 0000-0003-1600-7365),从事全球变化生态学和土壤生态学研究。E-mail: 1571166316@qq.com

    通信作者: 吴建平(ORCID: 0000-0002-5784-834X),教授,博士生导师,从事全球变化生态学和土壤生态学研究。E-mail: jianping.wu@ynu.edu.cn
  • 中图分类号: S718.5

摘要:   目的  探讨长期氮沉降和季节变化对杉木Cunninghamia lanceolata人工林无机氮及氮素转化速率的影响。  方法  以福建省三明市沙县官庄国有林场亚热带人工杉木林为研究对象,开展长期(10 a)氮添加梯度(对照:N0;低氮:N1;中氮:N2;高氮:N3)野外控制实验,通过野外原位培养方法测定氮添加对净氮矿化、硝化和淋溶的影响。  结果  ①氮添加显著提高了铵态氮(NH4 +-N)、硝态氮(NO3 -N) 和总无机氮质量分数,从大到小均呈现为N3、N2、N1、N0的趋势,且铵态氮质量分数均高于硝态氮。②氮素转化速率随氮添加梯度而增大,高氮显著促进了氮素转化(P<0.05)。③季节显著影响氮素转化(P<0.05),净氮矿化速率、硝化速率与淋溶速率均表现为夏季高、冬季低的季节动态。  结论  氮添加显著增加了土壤无机氮与氮素转化速率,土壤pH、碳氮比(C/N)和土壤温度可能是研究区氮添加驱动氮素转化的主要因子。在杉木人工林的经营与管理中需要更多关注土壤养分和氮素转化速率对外源氮输入的响应。图2表3参40

English Abstract

杨仕明, 蔡乾坤, 刘文飞, 吴建平. 杉木人工林土壤氮矿化对长期氮添加和季节的响应[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20210403
引用本文: 杨仕明, 蔡乾坤, 刘文飞, 吴建平. 杉木人工林土壤氮矿化对长期氮添加和季节的响应[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20210403
YANG Shiming, CAI Qiankun, LIU Wenfei, WU Jianping. Response of soil N mineralization to long-term N addition and season in Cunninghamia lanceolata plantation[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20210403
Citation: YANG Shiming, CAI Qiankun, LIU Wenfei, WU Jianping. Response of soil N mineralization to long-term N addition and season in Cunninghamia lanceolata plantation[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20210403

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