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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">0536-1036</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Известия высших учебных заведений. Лесной журнал</journal-title>
        <journal-title xml:lang="en">Lesnoy Zhurnal (Russian Forestry Journal)</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name>Северный (Арктический) федеральный университет им. М.В. Ломоносова</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.37482/0536-1036-2026-1-90-102</article-id>
      <article-categories>
        <subj-group>
          <subject>ЛЕСНОЕ ХОЗЯЙСТВО</subject>
        </subj-group>
        <subj-group>
          <subject>FORESTRY</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="ru">Ветровалы в лесах юго-западной части Сахалина под воздействием циклонов</article-title>
        <trans-title-group xml:lang="en">
          <trans-title>Windfalls in the Forests of the Southwestern Sakhalin under the Influence of Cyclones</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Сабиров</surname>
            <given-names>Р.Н.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Сабиров</surname>
              <given-names>Р.Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Sabirov</surname>
              <given-names>Rinat N.</given-names>
            </name>
          </name-alternatives>
          <email>r.sabirov@imgg.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-3427-8572</contrib-id>
          <contrib-id contrib-id-type="researcherid">AAG-6821-2021</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Мелкий</surname>
            <given-names>В.А.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Мелкий</surname>
              <given-names>В.А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Melkiy</surname>
              <given-names>Vyacheslav А.</given-names>
            </name>
          </name-alternatives>
          <email>vamelkiy@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-8919-8508</contrib-id>
          <contrib-id contrib-id-type="researcherid">AAG-6771-2021</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Верхотуров</surname>
            <given-names>А.А.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Верхотуров</surname>
              <given-names>А.А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Verkhoturov</surname>
              <given-names>Аleksey А.</given-names>
            </name>
          </name-alternatives>
          <email>ussr-91@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-3826-7339</contrib-id>
          <contrib-id contrib-id-type="researcherid">JCO-4468-2023</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Институт морской геологии и геофизики ДВО РАН, ул. Науки, д. 1Б, г. Южно-Сахалинск, Россия, 693022</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Institute of Marine Geology and Geophysics Far Eastern Branch of the Russian Academy of Sciences, ul. Nauki, 1B, Yuzhno-Sakhalinsk, 693022, Russian Federation</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2026-02-20">
        <day>20</day>
        <month>02</month>
        <year>2026</year>
      </pub-date>
      <issue>1</issue>
      <fpage>90</fpage>
      <lpage>102</lpage>
      <history>
        <date date-type="received" iso-8601-date="2024-09-24">
          <day>24</day>
          <month>09</month>
          <year>2024</year>
        </date>
        <date date-type="accepted" iso-8601-date="2024-12-15">
          <day>15</day>
          <month>12</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2024-12-13">
          <day>13</day>
          <month>12</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© Сабиров Р.Н., Мелкий В.А., Верхотуров А.А., 2026</copyright-statement>
        <copyright-year>2026</copyright-year>
        <copyright-holder xml:lang="ru">Сабиров Р.Н., Мелкий В.А., Верхотуров А.А.</copyright-holder>
        <copyright-holder xml:lang="en">Sabirov R.N., Melkiy V.А., Verkhoturov А.А.</copyright-holder>
        <license xlink:href="https://creativecommons.org/licenses/by/4.0/">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <abstract xml:lang="ru">
        <p>Тропические циклоны, действующие в западной части Тихого океана в летне-осеннее время, периодически заходят далеко на север, трансформируясь во внетропические. В 2014–2015 гг. при прохождении циклонов в юго-западной части Сахалина были нарушены значительные площади лесов. Цель работы – исследовать масштабы и характер повреждений в лесных насаждениях, подвергнувшихся катастрофическим ветровалам при прохождении внетропических циклонов над юго-западными районами о-ва Сахалина. Оценка повреждений лесов проводилась как наземными, так и дистанционными методами. На пробных площадях, заложенных в различных типах леса, проводился перечет деревьев, установление необходимых лесотаксационных характеристик, а затем определение запасов сохранившегося древостоя и его погибшей части. Лесные насаждения по степени нарушенности ветровалами были подразделены на 3 категории: полная гибель древостоя или с большой долей погибших деревьев (выше 60 %), средней долей (30–60 %) и незначительной долей (менее 30 %) от их исходных объемов. Для пространственного анализа ветровальных прогалин использовались доступные снимки с космического аппарата Sentinel-2, полученные с 2016 по 2017 гг. Космические снимки исследуемой территории в комбинации каналов 11-8-4 подвергались классификации «с обучением». Обучающая выборка включала набор пикселей, представляющих изображение эталонных участков, на которых выполнялись полевые геоботанические и лесотаксационные исследования. В результате дешифрирования снимков выявлено, что суммарная площадь ветровалов в Холмском и Невельском районах юго-западной части о-ва Сахалина составила 22 735 га. Для исследуемой территории был рассчитан нормализованный относительный индекс растительности (NDVI) и проанализированы его значения с целью обособления участков с различной степенью повреждений. При этом установлено, что в юго-западной части Сахалина полностью или большой долей погибшие лесонасаждения занимают 19,85 % площади, в средней степени поврежденные – 41,86 %, незначительно поврежденные – 38,29 %.</p>
      </abstract>
      <trans-abstract xml:lang="en">
        <p>Tropical cyclones operating in the western Pacific Ocean in the summer and autumn periodically go far north, transforming into extratropical ones. In 2014–2015, significant areas of forests were disrupted during the passage of cyclones in the southwestern part of Sakhalin. The aim of the research has been to investigate the scale and nature of damage in forest stands subjected to catastrophic windfalls during the passage of extratropical cyclones over the southwestern regions of Sakhalin Island. Forest damage assessment has been carried out using both ground-based and remote sensing methods. In the sample plots established in various types of forest, the trees have been tallied, the necessary forest inventory characteristics have been established, and then the stocks of the remaining stand and its dead part have been determined. Forest stands have been divided into 3 categories according to the degree of damage caused by windfalls: complete loss of a stand or with a large (above 60 %), average (30–60 %) or insignificant (less than 30 %) proportion of dead trees from their original volumes. The available images from the Sentinel-2 spacecraft, obtained from 2016 to 2017, have been used for the spatial analysis of windfall glades. Satellite images of the study area in a combination of channels 11-8-4 have been classified “with training”. The training sample has included a set of pixels representing the image of reference sites where field geobotanical and forest inventory studies have been performed. As a result of image interpretation, it has been revealed that the total area of windfalls in the Kholmsky and Nevelsky Districts of the southwestern part of Sakhalin Island has amounted to 22,735 ha. For the study area, the normalized difference vegetation index (NDVI) has been calculated and its values have been analyzed to isolate areas with varying degrees of damage. At the same time, it has been established that in the southwestern part of Sakhalin, completely or largely dead forest stands occupy 19.85 % of the area, moderately damaged – 41.86 %, and slightly damaged stands account for 38.29 %.</p>
      </trans-abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>ветровал</kwd>
        <kwd>внетропические циклоны</kwd>
        <kwd>космические снимки</kwd>
        <kwd>геоинформационный анализ</kwd>
        <kwd>лесные земли</kwd>
        <kwd>древостой</kwd>
        <kwd>нарушенность</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>windfall</kwd>
        <kwd>extratropical cyclones</kwd>
        <kwd>satellite images</kwd>
        <kwd>geoinformation analysis</kwd>
        <kwd>forest lands</kwd>
        <kwd>stand</kwd>
        <kwd>disturbance</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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