Satellite observations of high northern latitude vegetation productivity changes between 1982 and 2008: ecological variability and regional differences
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...Large areas in temperate North America and Asia ex- perienced warming combined with reductions in precipita- tion over the period 1990–2009 (Fig....
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...Browning has occurred as a consequence of regional drought, wildfire, and insect outbreak, and their interaction, especially in North America (Beck and Goetz, 2011)....
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...A particular focus is on the impacts of climate variation and change on land ecosystems at the regional scale, as extreme climate events occurred during the period of 1990–2009 across many re- gions of the world, including North America (southwestern USA, 2000–2002), Europe (2003), Amazonia (2005), and eastern Australia (2001–2008), raising considerable attention in the ecological community regarding the consequences of recent climate variability on ecosystem structure and func- tion (Allen et al., 2010) and the carbon cycle (Ciais et al., 2005; Van der Molen et al., 2011; Reichstein et al., 2013)....
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...However, DGVMs agree on simulating a small negative trend in wild- fire flux across boreal North America and tundra....
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...In some regions models sim- ulate a positive trend in NPP but an even larger positive trend in RH (eastern Europe, southeastern USA, Amazonia, south- ern China, North America tundra)....
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...Also, impacts of climate change on vegetation density and health, such as the browning of boreal forests (Beck and Goetz, 2011; Verbyla, 2011), have been observed in high-latitude regions....
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