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. 2007 Mar 13;104(12):4820–4823. doi: 10.1073/pnas.0611338104

Fig. 3.

Fig. 3.

Correlation coefficients. (A) Correlation between first differences of LAI and solar radiation. The first differences of LAI [ΔLAI(t)] are calculated as LAI(t + 1) − LAI(t), where t is months in the timeline March 2000 to May 2005. The number of data points is 62 for each pixel. Correlation coefficients greater than 0.25 or less than −0.25 are shown (P < 0.05). The analysis was performed for rainforest pixels with LAI amplitudes greater than 0.66 or less than −0.66; this threshold (|0.66|) is the smallest LAI difference discernable with the MODIS LAI data set (see SI Materials and Methods). (B) Correlation between first differences of LAI and precipitation.