蒙古和西跨贝加尔沙漠、草原、草原林和森林生态系统的碳氮同位素区划

Q2 Agricultural and Biological Sciences

Geography, Environment, Sustainability Pub Date : 2023-10-08 DOI:10.24057/2071-9388-2023-2720

A. M. Khubanova, V. B. Khubanov, D. A. Miyagashev

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引用次数: 0

摘要

中亚的蒙古-跨贝加尔湖地区以其广泛的大陆内生态系统而闻名，从沙漠到草原到针叶林和山地苔原。本文介绍了外蒙古和西外贝加尔沙漠、草原和森林草原地区食草动物骨骼和牙齿组织中碳和氮同位素组成的数据。荒漠(戈壁)和半荒漠景观动物的碳同位素比值最大，δ 13c中位数(平均值)为-17.9‰。δ 13c的最小值以森林草原和森林景观(Transbaikalia)的草食性动物为最小值，中位数为-23‰。草原动物群(δ 13c中值为-21.7‰)的碳同位素组成处于中间值。从氮的同位素组成来看，生态系统的同位素-地球化学隔离不太明显。

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Zoning of Desert, Steppe, Steppe-Forest and Forest Ecosystems By Carbon And Nitrogen Isotope in Mongolia and Western Transbaikalia

The Mongolian–Transbaikalian region of the Central Asia is known for its wide range of intracontinental ecosystems from desert through steppe to taiga forest and mountain tundra. Data on the isotopic composition of carbon and nitrogen in the bone and dental tissues of herbivorous animals inhabiting the desert, steppe, and forest–steppe landscapes of Outer Mongolia and Western Transbaikalia are presented. The maximum values of the carbon isotope ratio are observed in animals from the desert (Gobi Desert) and the semi-desert landscapes, median (mean) δ 13 C is -17.9‰. The minimum values of δ 13 C were obtained by herbivorous animals of the forest-steppe and the forest landscapes (Transbaikalia), which median δ 13 C is -23‰. The fauna of the steppes (median δ 13 C is -21.7‰) has intermediate values of the carbon isotopic composition. According to the isotope composition of nitrogen, the isotope-geochemical isolation of ecosystems is less pronounced.

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来源期刊

Geography, Environment, Sustainability Social Sciences-Geography, Planning and Development

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is founded by the Faculty of Geography of Lomonosov Moscow State University, The Russian Geographical Society and by the Institute of Geography of RAS. It is the official journal of Russian Geographical Society, and a fully open access journal. Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” publishes original, innovative, interdisciplinary and timely research letter articles and concise reviews on studies of the Earth and its environment scientific field. This goal covers a broad spectrum of scientific research areas (physical-, social-, economic-, cultural geography, environmental sciences and sustainable development) and also considers contemporary and widely used research methods, such as geoinformatics, cartography, remote sensing (including from space), geophysics, geochemistry, etc. “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is the only original English-language journal in the field of geography and environmental sciences published in Russia. It is supposed to be an outlet from the Russian-speaking countries to Europe and an inlet from Europe to the Russian-speaking countries regarding environmental and Earth sciences, geography and sustainability. The main sections of the journal are the theory of geography and ecology, the theory of sustainable development, use of natural resources, natural resources assessment, global and regional changes of environment and climate, social-economical geography, ecological regional planning, sustainable regional development, applied aspects of geography and ecology, geoinformatics and ecological cartography, ecological problems of oil and gas sector, nature conservations, health and environment, and education for sustainable development. Articles are freely available to both subscribers and the wider public with permitted reuse.