Abstract

Changes in the phytomass of the ecosystems of Northern Eurasia were traced based on the results of modeling and analysis of multispectral satellite imagery (MODIS archives 2000–2020). It was established that, since the end of the 20th century, an increase in reserves has been noted caused by climate change (an increase in the concentration of CO₂, annual mean temperatures, etc.). Application of the GIS-information products based on the MODIS-projective vegetation cover (MODIS/006/MOD44B), evapotranspiration and the thermal field (MOD16A2), and biological production (MOD17A3HGF) allowed us to conduct retrospective modeling of the trend in the aboveground carbon reserves (tC/ha). It was revealed that in the years 2000–2020, a slight trend remained of an increase in the phytomass of forest ecosystems (1.2–6.0%), floodplain, and mountain meadows and shrubs (8.1–9.8%). In the last 17 years, a negative trend has been observed in treeless biomes: –6.0% in tundra, –9.0% in meadow and typical steppes, and –11.3% in deserted steppes. Multidirectional changes in carbon reserves of the aboveground phytomass of biomes, in addition to the internal (succession) and external (climate and anthropogenic transformation: forest felling, landscape fires, etc.) factors, are also due to the synergy of their action.

中文翻译：

---

21世纪欧亚大陆北部地上疫病的变化。

摘要

根据多光谱卫星图像的建模和分析结果（MODIS档案2000–2020），追踪了北欧亚大陆生态系统的植物群落变化。可以确定的是，自20世纪末以来，气候变化导致了储量的增加（CO ₂浓度的增加）。，年平均温度等）。基于MODIS投影植被（MODIS / 006 / MOD44B），蒸散量和热场（MOD16A2）以及生物生产（MOD17A3HGF）的GIS信息产品的应用使我们能够对地上趋势进行回顾性建模碳储量（tC / ha）。结果表明，在2000–2020年间，森林生态系统的植物群落（1.2–6.0％），洪泛区，山地草甸和灌木（8.1–9.8％）的增加仍存在轻微趋势。在过去的17年中，在无树的生物群落中观察到了负面趋势：苔原为–6.0％，草甸和典型草原为–9.0％，荒漠草原为–11.3％。生物群落地上植物区系碳储量的多方向变化，