Внутренняя Азия. Рубрика в журнале - Природа Внутренней Азии

Spatiotemporal patterns and trends of the Mongolian plateau wildfires

Yushan , Chi Wenfeng , Duwala , Zhang Hongyan , Wulantuya , Xu Kunpeng , Bao Yuhai

Статья научная

Based on the long-time series MODIS Fire Product, the spatiotemporal distributional patterns of the Mongolian Plateau wildfires were analyzed using ArcGIS. The future trend of the Mongolian Plateau wildfires was also examined with Hurst index. The study provided a scientific basis and reference for aspects such as the development of a secure ecological environment and the international ecological security. Results included: (1) The occurrence of Mongolian Plateau wildfires shows an upward trend in recent years, with alternating peaks and bottoms annually, and seasonal feature is that high occurrence in spring and autumn, low occurrence in summer and winter. (2) The wildfires of the Mongolian Plateau were also found to have a concentrate distribution, indicating that such behavior was not in a random process. Instead, certain factors may have contributed to their occurrence. (3) About 2/3 of the total burned area were in Mongolia, which located mainly in the grassland region near the eastern border, and in the forest and grassland region in the north. (4) The wildfires at the forest-grassland boundary area between eastem Mongolia and Inner Mongolia were found to be more persistent, while those at the area between the central north Mongolia and the Greater Khingan Mountains area in Inner Mongolia were found to be less persistent.

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Таксономические взаимоотношения двух видов рода Leymus hochst., на основе ISSR (Inter Simple Sequence Repeats) анализа

Бадмаева Наталья Карловна, Мезина Наталья Сергеевна, Агафонов Александр Викторович

Статья научная

Изучались филогенетические взаимосвязи двух видов рода Leymus: L. secalinus (Georgi) Tzvel и L. littoralis (Griseb.) Peschkova методом молекулярно-генетического анализа при помощи ISSR-праймеров. Результаты исследований выявили обособленность L. secalinus и ограниченность распространения вида северным побережьем озера Байкал. Также подтверждено мнение Г. А. Пешковой, что вид является эндемиком побережий оз. Байкал. Ареал вида L. littoralis более обширен, не ограничивается территорией Восточной Сибири России и охватывает территории Внутренней Монголии Китая, Монголию.

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