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Vegetation degradation in a permafrost region as seen from space: Noril'sk (1961-1999)статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Tutubalina O.V., Rees W.G.
- Журнал: Cold Regions Science and Technology
- Том: 32
- Номер: 2-3
- Год издания: 2001
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 191
- Последняя страница: 203
- DOI: 10.1016/S0165-232X(01)00049-0
- Аннотация: The presence and distribution of airborne and surface contaminants can often be inferred from their effects on vegetation, and this is particularly true in areas of frozen ground where the vegetation is especially vulnerable. In this paper, we take as a study area the region around the city of Noril'sk in northern Siberia. Non-ferrous metal smelting has been carried out extensively in Noril'sk since the 1930s, and it is now one of the world's largest producers of nickel. The principal contaminants, which are extensive, are sulphur dioxide and heavy metals. Heat contamination from buildings and industrial activity is also significant in the immediate surroundings of the city where it has led to degradation of permafrost. We describe two approaches to the use of satellite imagery to monitor vegetation degradation in the Noril'sk region. The first of these compares a panchromatic spy satellite image from 1961 with a multispectral satellite image acquired 34 years later to quantify the gross changes in land cover around Noril'sk. This analysis shows a decrease of approximately 80 km(2) in the vegetated area around the city. The second approach is a regional multitemporal study based on the use of the Normalised Difference Vegetation Index, to which we apply a new correction for phenological variation. This analysis is used to identify a previously unreported area of vegetation decrease to the southwest of Noril'sk. (C) 2001 Elsevier Science B.V. All rights reserved.
- Добавил в систему: Тутубалина Ольга Валерьевна