Synanthropization and species diversityof floodplain ecosystems of the Ob-Irtysh basin, Russia

Q4 Environmental Science
E. Popova
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引用次数: 1

Abstract

Currently, the phytocenoses of the Irtysh floodplain are experiencing intense anthropogenic pressures due to the intensive development of the oil and gas industry, as well as the urbanization of the territory. This paper focuses on the structure and species composition of the 27 studied areas in the floodplain ecosystems of the Ob-Irtysh basin. As a result of the research, we found 111 species of vascular plants from 33 families in plant communities. The areas belong to meadows and forest vegetation are represented by (1) birch forests (33%), (2) pine forests (10%), (3) fir forests (8%), (4) aspen forests (4%) and (5) associations of meadows (45%). Furthermore, we conducted a comparative analysis of the studied phytocenoses according to the Drude scale. To determine the anthropogenic transformation of the flora and individual plant communities, we determined the synanthropization index (the ratio of synanthropic species to the total number of species). In the synanthropic flora fraction, we distinguished 45 species belonging to 12 families, with the most multispecies being Apiaceae, Scrophulariaceae, Compositeae, Ranunculaceae, Poaceae, Fabaceae, Plantaginaceae. The synanthropization index of the studied phytocenoses ranges from 6.6% to 81.2%. The largest number of synanthropic species occurs in meadow associations, the content of synanthropes is greater than 50%, the structure is becoming more superficial, and the productivity and stability of plant communities are changing. The study of the horizontal structure of grass stands of meadow phytocenoses makes it possible to find the variability of different years, the change of dominant species and the stability of the species composition. Currently, researchers are paying considerable attention to the analysis of the structure of the herbage, since its study is of great theoretical and practical importance in clarifying phytocenotic relations.
俄罗斯鄂-额尔齐斯河流域洪泛区生态系统的同位化和物种多样性
目前,额尔齐斯河洪泛区的植物群落正经历着巨大的人为压力,这是由于石油和天然气工业的密集发展以及该地区的城市化。本文对额尔齐斯河流域27个研究区洪泛平原生态系统的结构和物种组成进行了研究。研究结果表明,在植物群落中发现维管植物33科111种。森林植被以白桦林(33%)、松林(10%)、冷杉林(8%)、白杨林(4%)和草甸群落(45%)为代表。此外,我们根据德鲁德量表对所研究的植物糖进行了比较分析。为了确定植物区系和单个植物群落的人为转化,我们确定了共生化指数(共生物种与物种总数的比值)。在共生区系中,共鉴定出12科45种,种类最多的是Apiaceae、Scrophulariaceae、Compositeae、Ranunculaceae、Poaceae、Fabaceae、Plantaginaceae。共生指数在6.6% ~ 81.2%之间。草甸群落中共生物种数量最多,共生物种含量大于50%,结构向表层化转变,植物群落的生产力和稳定性正在发生变化。通过对草甸植物群落水平结构的研究,可以发现不同年份的变异、优势种的变化和物种组成的稳定性。目前,牧草的结构分析备受关注,因为其研究对阐明植物共生关系具有重要的理论和实践意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acta Biologica Sibirica
Acta Biologica Sibirica Environmental Science-Nature and Landscape Conservation
CiteScore
1.20
自引率
0.00%
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0
审稿时长
12 weeks
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