In a recent experiment, we grew Acacia mangium under five light intensities: 4, 7, 25, 50 and 100% side by side with four other rainforest species under conditions free of water stress. Acacia mangium outgrew all the other species as expected, not only under 100% light but also under 50% and 25%. It had the highest leaf turnover rate due to its short leaf life span, which is about 300 days at 4% light dropping to 100 days at 100% light. Its leaf life span drops at a rate of 40 days for each doubling of light intensity. Compared to the next fastest growing species, Shorea roxburghii, Acacia mangium grows 4 times as fast but takes up 15 times as much N, 10 times as much P and 16 times as much K.
Our paper has been published in the Journal of Tropical Forest Science 20 (3) 218-234 (2008). P.S. Tong and F.S.P. Ng: Effect of light intensity on growth, leaf production, leaf lifespan and leaf nutrient budgets of Acacia mangium, Cinnamomum iners, Dyera costulata, Eusideroxylon zwageri and Shorea roxburghii.