摘要:The climate system and terrestrial ecosystems interact as they change. In northern Eurasia
these interactions are especially strong, span all spatial and timescales, and thus have
become the subject of an international program: the Northern Eurasia Earth
Science Partnership Initiative (NEESPI). Without trying to cover all areas of these
interactions, this paper introduces three examples of the principal micrometeorological,
mesometeorological and subcontinental feedbacks that control climate–terrestrial ecosystem
interactions in the boreal zone of northern Eurasia. Positive and negative feedbacks of
forest paludification, of windthrow, and of climate-forced displacement of vegetation zones
are presented. Moreover the interplay of different scale feedbacks, the multi-faceted nature
of ecosystems–climate interactions and their potential to affect the global Earth system are
shown. It is concluded that, without a synergetic modeling approach that integrates all
major feedbacks and relationships between terrestrial ecosystems and climate,
reliable projections of environmental change in northern Eurasia are impossible,
which will also bring into question the accuracy of global change projections.