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Abstract. The taiga ecosystem in northeastern Siberia, a nitrogen-limited ecosystem on permafrost with a dry climate, changed during the extreme wet event in 2007. We investigated the normalized difference vegetation index (NDVI) as a satellite-derived proxy of needle production and compared it with ecosystem parameters such as soil moisture water equivalent (SWE), foliar C/N ratio, δ13C and δ15N, and ring width index (RWI) at the Spasskaya Pad Experimental Forest Station in Russia for the period from 1999 to 2019. Historical variations in NDVI showed a large difference between typical larch forest (unaffected) and the sites affected by the extreme wet event in 2007 because of high tree mortality at affected sites under extremely high SWE and waterlogging, resulting in a decrease in NDVI. Before 2007, the NDVI in a typical larch forest showed a positive correlation with SWE and a negative correlation with foliar C/N. These results indicate that not only the water availability (high SWE) in the previous summer and current June but also the soil N availability increased needle production. NDVI was also positively correlated with RWI, resulting from similar factors controlling them. However, after the wet event, NDVI was negatively correlated with SWE, while NDVI showed a negative correlation with foliar C/N. These results indicate that after the wet event, high soil moisture availability decreased needle production, which may have resulted from lower N availability. Needle δ15N was positively correlated with NDVI before 2007, but after the wet event, needle δ15N decreased. This result suggests damage to roots and/or changes in soil N dynamics due to extremely high soil moisture.

The introduction of the principles of sustainable development into the world system of higher education began 30 years ago. It is one of the global trends now. The accumulated international experience is quite extensive and could be used in the development of the national concept of sustainable development of Russian higher education. The article is devoted to the analysis of the sustainable development networks interactions in higher education in the world and in Russia. Special attention paid to various stability ratings of universities. The experience of sustainable program implementation has been revealed on the example of the University of Hokkaido, one of the seven national corporations in the system of higher education of Japan. The experience of energy and resource-saving measures in the North-Eastern Federal University (Yakutsk, Russia) including the energy performance contract, is presented. The necessity of actualization of the national project of sustainable development of higher education institutions of Russia and the development of a national rating of the sustainability adapted to the legal framework and budgeting is substantiated.

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