{
  "abstract": "目的探究枯水期水库氮素的空间分布特征及内源氮释放潜力。方法于2025年12月对杨家园水库7个采样点的3层水柱及表层沉积物进行采样，分析水体不同形态氮（总氮、氨氮、硝态氮、亚硝态氮）及理化参数（ORP、TOC、pH等），测定沉积物中总氮、铵态氮和硝态氮含量。结果沿入库口至坝前，水体TN浓度由2.70 mg/L（Y1底层）升至3.44 mg/L（Y7底层），沉积物TN由910 mg/kg（Y1）升至2 130 mg/kg（Y7），呈显著沿程累积。水库氮形态垂向分布总体来看受局部氧化还原条件和混合状态共同调控，存在明显的空间异质性。Spearman相关分析显示，总氮、氨氮主要受TDS、ALK和pH调控（|r|≈0.5~0.6），硝态氮、亚硝态氮与理化参数相关性弱，揭示枯水期氮素分布的复杂性与多因子耦合特征。沉积物有机氮与水体TN呈极显著正相关（r=0.93， p<0.01），沉积物硝态氮与水体硝态氮呈极显著正相关（r=0.93， p<0.01），证实“有机氮矿化→氨氮释放→硝化转化→硝氮交换”的界面交换路径。主成分分析提取2个主成分（累计方差贡献率76.9%），识别出“氮富集因子”和“氧化还原调控因子”。结论枯水期杨家园水库氮素主要受内源释放控制，沉积物有机氮是主要氮库，坝前区为内源释放高风险区，需加强监测。",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "唐玲巧"
    },
    {
      "name": "焦树林"
    },
    {
      "name": "李曾"
    },
    {
      "name": "宋方园"
    },
    {
      "name": "胡萍萍"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3pvpmxjkwkwv8.bib",
  "cited_by": 0,
  "doi": null,
  "fulltext_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.027/",
  "id": "3pvpmxjkwkwv8",
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    "1009-2242"
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  "landing_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.027/",
  "language": "zh",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "GE1-350"
    ],
    [
      "lcc",
      "S"
    ]
  ],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "Editorial Department of Journal of Soil and Water Conservation",
  "ris": "https://research.draconitic.com/paper/3pvpmxjkwkwv8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:47Z",
      "native_id": "cd93d0e345774d718a542d801b991a3f",
      "source": "doaj",
      "url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.027/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "lcc:GE1-350",
      "subfield": "environmental-science"
    }
  ],
  "title": "岩溶峡谷型水库枯水期氮素的空间赋存特征及其环境驱动因子",
  "title_text": "岩溶峡谷型水库枯水期氮素的空间赋存特征及其环境驱动因子",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:47Z",
  "url": "https://research.draconitic.com/paper/3pvpmxjkwkwv8",
  "venue": "Shuitu Baochi Xuebao",
  "versions": []
}