Хангай, Хэнтийн нурууны Сибирь хушны боргоцой болон үрийн зарим үзүүлэлтүүдийн ялгаа. (Mongolian)

Pinus sibirica is spread over 612.7 thousand hectares or 5.2 percent of the 13.8 million hectares of forest areas in the northern part of Mongolia between 68˚30`and 46˚30` north latitude. The forest with Cedar is important effective for surface water runoff, and protects soil from erosion, increases river flow, improves climate, absorbs carbon through plant photosynthesis, creates a habitat for animals, plants, and microorganisms, and maintains permafrost, emits phytoncides and cleans the air. In our research, 12 sample plots of Cedar forests of Khangai and Khentii mountains were established and 6 parameters of general characteristics of cones and seeds were compared. Therefore, the indicator of the Cedar cone in the Khangai mountains are higher than in the Khentii mountains. Conversely, the number of seeds and scales in one cone of Khentii mountains are higher than the Khangai mountains. 1000 seed weight and number of scales in Cedar cones are inversely related to geographic location, and the width of the cones is positively and directly related to the fact that could be that the altitude of Khentii mountains is 1400-1700m from above sea level, and the Cedar of the Khangai mountains grows at an average height if 2000m from above sea level. [ABSTRACT FROM AUTHOR]

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