{"title":"Vital Structure of the Larix gmelinii Population in an Urban Environment","authors":"G. Yu. Morozova","doi":"10.1134/s199542552470029x","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The changes in the life status of <i>Larix gmelinii</i> along the gradient of urbanized ecotypes were considered on the basis of the population analysis and morphometric approach. <i>L. gmelinii</i> growing under different conditions differed in a number of size and growth characteristics of the photosynthetic activity. The highest values were found in plants growing in public gardens and on city streets under conditions of high insolation. Population analysis of <i>L</i>. <i>gmelinii</i> in an urbanized environment was carried out on the basis of quantitative parameters that characterized the growth and morphogenesis of plants (annual growth, indicators of photosynthetic activity). The determining set of characters for the vitality analysis of <i>L</i>. <i>gmelinii</i> consisted of biologically significant characters with a high degree of variability: length of shoot growth (C<sub>V</sub> varied from 39.09 to 68.86%), weight of needles at annual growth (C<sub>V</sub> 51.81–120.52%), weight of annual shoot (C<sub>V</sub> 67.73–119.85). The vitality structure of the populations of the species in the vegetative ontogenetic state changed from depressive to equilibrium, with the population quality index changing from 0.2 to 0.333. The analysis of landscaping of the city transport highways demonstrated that local populations of <i>L. gmelinii</i> in the generative ontogenetic state were of a prosperous type, with the population quality index varying slightly from 0.47 to 0.49. The plasticity of the species and a high viability of <i>L. gmelinii</i> due to the resistance to air pollution and unpretentiousness to soil conditions support a broad application of the larch for landscaping of urban areas.</p>","PeriodicalId":50619,"journal":{"name":"Contemporary Problems of Ecology","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Contemporary Problems of Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1134/s199542552470029x","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ECOLOGY","Score":null,"Total":0}
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Abstract
The changes in the life status of Larix gmelinii along the gradient of urbanized ecotypes were considered on the basis of the population analysis and morphometric approach. L. gmelinii growing under different conditions differed in a number of size and growth characteristics of the photosynthetic activity. The highest values were found in plants growing in public gardens and on city streets under conditions of high insolation. Population analysis of L. gmelinii in an urbanized environment was carried out on the basis of quantitative parameters that characterized the growth and morphogenesis of plants (annual growth, indicators of photosynthetic activity). The determining set of characters for the vitality analysis of L. gmelinii consisted of biologically significant characters with a high degree of variability: length of shoot growth (CV varied from 39.09 to 68.86%), weight of needles at annual growth (CV 51.81–120.52%), weight of annual shoot (CV 67.73–119.85). The vitality structure of the populations of the species in the vegetative ontogenetic state changed from depressive to equilibrium, with the population quality index changing from 0.2 to 0.333. The analysis of landscaping of the city transport highways demonstrated that local populations of L. gmelinii in the generative ontogenetic state were of a prosperous type, with the population quality index varying slightly from 0.47 to 0.49. The plasticity of the species and a high viability of L. gmelinii due to the resistance to air pollution and unpretentiousness to soil conditions support a broad application of the larch for landscaping of urban areas.
期刊介绍：
Contemporary Problems of Ecology is a multidisciplinary periodical that publishes original works on the following subjects: theoretical and methodical issues of ecology, regional aspects of ecology, regional ecological disasters, structure and functioning of ecosystems, anthropogenic transformation of ecosystems. All basic aspects of modern ecology, including the most complicated interactions between living organisms and their environment, are presented. Some of the journal issues are dedicated to global changes in biological diversity at various levels of organization (populations, species, ecosystems) principles and methods of nature conservation.
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