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A. P. Shevyrnogov M. Yu. Chernetskiy G. S. Vysotskaya 《Izvestiya Atmospheric and Oceanic Physics》2013,49(9):1047-1056
It is found that the nonlinear positive Normalized Difference Vegetation Index (NDVI) trend of mountain taiga in the south of Krasnoyarsk Krai has been negative since 1999–2000. A comparison with the boreal belt of northern Eurasia showed that, though still nonnegative, the positive trend has distinctly decreased to nearly a plateau. A trend analysis of radiation temperature of the surface revealed that the temperature shows a decreasing trend for the selected region of mountainous taiga and an increasing trend for northern Eurasia. We compared air-temperature data from the Yermakovskoe meteorological station to eliminate a preliminary data-processing error. Regression analysis demonstrated a fairly high degree of correlation. Also, we found a quite high degree of correlation between time series and trends of air temperature and NDVI. Trends in air temperature in northern Eurasia according to NCEP-DOE Reanalysis 2 data also confirm the trend found on the basis of satellite data. 相似文献
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Degermendzhi A. G Vysotskaya G. S. Somova L. A. Pisman T. I. Shevyrnogov A. P. 《Doklady Earth Sciences》2020,493(2):658-660
Doklady Earth Sciences - The tundra was divided into different classes depending on the temperature and precipitation in accordance with the Holdridge classification. Dry, moist, wet, and rainy... 相似文献
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