{
  "abstract": "目的科学评估深层土壤水分亏缺的发育风险，对黄土塬区主导经济林苹果园的水分管理、更新调控与可持续经营具有重要意义。为此，亟须揭示该区不同林龄苹果园深层土壤水分亏缺的时空演变和垂向分异特征。方法在洛川塬选取农地、不同林龄（幼、中、老）苹果园，于2021—2025年开展0~5 m土壤体积含水量（SWC）的原位观测，分析1~5 m土层土壤含水量亏缺（ΔSWC）动态及土壤储水量亏缺（ΔSWS）关键层位。结果监测期内，农地深层SWC阶段性增加，果园整体趋于干燥，幼龄果园后期干燥明显，中龄果园水分亏缺持续，老龄果园SWC阶段性回升；以农地为参照，果园1~5 m平均土壤含水量亏缺普遍存在且垂向异质性明显，亏缺强度为中龄（2.5%）>老龄（1.3%）>幼龄（0.2%），其中，中龄果园亏缺的土层最厚（2~5 m）；2021—2025年，3个林龄果园1~5 m平均ΔSWC均显著下降（p<0.001，R²>0.74），中龄果园下降最快（斜率为-0.003 5），表明土壤水分亏缺持续加剧，并随林龄增长呈先增强后减弱的变化规律；不同土层ΔSWS显示，4~5 m土层是各林龄果园土壤水分亏缺的关键层位，幼、中、老龄果园对应ΔSWS分别为-9.0、-17.3、-13.2 mm。结论果园水分亏缺评估应同时考虑林龄和关键亏缺层位，并将土壤水分承载力作为栽植密度和果树更新的重要依据。",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "石骁驰"
    },
    {
      "name": "王云强"
    },
    {
      "name": "童永平"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/at7s1vs6a8jqr.bib",
  "cited_by": 0,
  "doi": null,
  "fulltext_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.012/",
  "id": "at7s1vs6a8jqr",
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  "landing_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.012/",
  "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/at7s1vs6a8jqr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:42Z",
      "native_id": "257c84d2cb91490a90c94e8aac12992e",
      "source": "doaj",
      "url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.012/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "lcc:GE1-350",
      "subfield": "environmental-science"
    }
  ],
  "title": "黄土塬区不同林龄苹果园深层土壤水分亏缺的时空变化特征",
  "title_text": "黄土塬区不同林龄苹果园深层土壤水分亏缺的时空变化特征",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:42Z",
  "url": "https://research.draconitic.com/paper/at7s1vs6a8jqr",
  "venue": "Shuitu Baochi Xuebao",
  "versions": []
}