Variation of Main Phenophases in Phenological Calendar in East China and Their Response to Climate Change

Figure 4

Linear correlation analysis between the beginning time of phenological season and the mean temperature of the previous 60 days in 1987–2012. (a) Spring, Shanghai: (, ); Nanjing: (, ); and Hefei: (, ). (b) Summer, Shanghai: (, ); Nanjing: (, ); and Hefei: (, ). (c) Autumn, Shanghai: (, ); Nanjing: (, ); and Hefei: (, ). (d) Winter, Shanghai: (, ); Nanjing: (, ); and Hefei: (, ).

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