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- East Asian Monsoon and paleoclimatic data analysis:a vegetation point of view

mcith_eastf01.JPG Figure 1  Location of studied site and modern vegetation zones in China (after Jiang et al., 2006). I, Cold-temperate conifer forest; II,
Temperate mixed conifer-broadleaved forest; III, Warm-temperate broadleaved deciduous forest; IV, Subtropical evergreen broadleaved
forest; V, Tropical rainforest and seasonal rainforest; VI, Steppe; VII, Desert; VIII, Tibet-Qinghai cold and highland vegetation. The dashed
and solid arrows indicate winter monsoon and the dominant direction of the summer monsoon precipitation belt, respectively.

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mcith_eastf02.JPG Figure 2  Comparison of a few proxies ans the climatic reconstructions in Lake Bayanchagan (Inner Mongolia, China). (A) total pollen (105 grains ml−1) and Pediastrum concentration (104 grains ml−1), 18O of authigenic carbonate multiplied by −1; (B) tree scores, i.e. sum of the square root of the arboreal taxa percentages; (C) first principal component of the three proxies of (A); (D) mean temperature of the oldest month reconstruction; (E) mean temperature of the warmest month reconstruction; (F) total annual precipitation; (G) , the ratio between actual and equilibrium evapotranspiration. The climate reconstructions are represented with the uncertainties, given by the range of
the analogues. After Jiang et al. (2008)1.

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mcith_eastf03.JPG Figure 3  Validation of the inverse BIOME4 modelling on the 601 samples of the modern database of China and Eurasia. The six reconstructed
variables are compared to the observed climate: MTCO (mean temperature of the coldest month reconstruction), present value = −20C, (MTWA) mean temperature of the warmest month reconstruction, present value = 17C, (GDD) growing degree days abve 5C, present value = 1500 days, (), the ratio between actual and equilibrium evapotranspiration, present value = 30%, (MAT) mean annual temperature, present value = 3C, (MAP) total annual precipitation, present value = 350 mm.

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mcith_eastf04.JPG Figure 4  Reconstruction of the climate in China 6000 years ago using inverse modelling method: (), the ratio between actual and equilibrium evapotranspiration in %, (MAT) mean annual temperature C, (MAP) total annual precipitation in mm. All the values are given in departures from present climate. Large circles indicate high significance levels (95%), small circles indicate no significance.

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