{
  "abstract": "目的揭示洪水事件对半干旱区间歇性河流CO₂和CH₄排放的响应特征及控制机制。方法以内蒙古半干旱区典型间歇性河流塔布河一次洪水事件为研究对象，采用静态箱法连续监测河床裸露期（S1）沉积物-大气界面、洪水前期（S2）和洪水后期（S3）水-大气界面的CO₂与CH₄通量，同步测定水文、水质和沉积物理化指标，并结合Spearman秩相关分析、冗余分析（RDA）和偏最小二乘结构方程模型（PLS-SEM）探讨温室气体排放的主要驱动因素及作用路径。结果洪水过程显著改变河道水动力、水体理化环境和沉积物结构，CO₂与CH₄排放呈明显不同步响应。河床裸露期FCO₂处于较高水平［（564.90±147.29）mg/（m²·h）］，洪水前期明显下降，洪水后期略有回升；FCH₄则在洪水前期迅速升高并形成峰值［（0.62±0.03）mg/（m²·h）］，随后逐渐下降并趋于稳定。相关性分析表明，FCO₂与溶解氧（DO）呈显著负相关（p<0.01），并与pH呈较显著负相关（p<0.05）；FCH₄与黏粒、粉粒呈极显著正相关，与粗砂呈负相关。RDA结果表明，黏粒、pH和悬浮泥沙浓度（SSC）是解释CO₂与CH₄通量变化的关键环境因子。PLS-SEM结果进一步表明，FCO₂主要受pH、SSC和总溶解性固体（TDS）等水体理化因子影响，FCH₄则更多受沉积物粒径组成及其衍生过程控制。结论短历时洪水事件通过改变界面状态、水体理化环境和表层沉积物粒径组成，驱动间歇性河流CO₂与CH₄通量的不同步响应。CO₂排放更敏感于水体环境变化和界面交换过程，而CH₄排放更易受到复水扰动和表层沉积物改变的影响。研究结果表明，在半干旱区间歇性河流碳排放核算中，应区分不同水文阶段并分别考虑CO₂和CH₄的差异化响应。",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "韩伟杰"
    },
    {
      "name": "左合君"
    },
    {
      "name": "郭建英"
    },
    {
      "name": "刘心宇"
    },
    {
      "name": "杨振奇"
    },
    {
      "name": "贺慧芳"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bxa0x512fwed0.bib",
  "cited_by": 0,
  "doi": null,
  "fulltext_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.025/",
  "id": "bxa0x512fwed0",
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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.2026.05.025/",
  "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"
    ]
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  "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/bxa0x512fwed0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:44Z",
      "native_id": "2f6b03b889374a6689e5474af9b763ad",
      "source": "doaj",
      "url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.025/"
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  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "lcc:GE1-350",
      "subfield": "environmental-science"
    }
  ],
  "title": "洪水事件驱动下间歇性河流CO₂与CH₄的排放特征及控制机制",
  "title_text": "洪水事件驱动下间歇性河流CO₂与CH₄的排放特征及控制机制",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:44Z",
  "url": "https://research.draconitic.com/paper/bxa0x512fwed0",
  "venue": "Shuitu Baochi Xuebao",
  "versions": []
}