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Changes in Soil Phosphorus and Nitrogen During Slash-and-Burn Clearing of a Dry Tropical Forest

^a Dep. of Biological Sciences, Univ. of Denver, Denver, CO 80208 USA
^b Dep. of Agronomy and Soil Sci., Univ. of Hawaii, Manoa Beaumont Research Center, 461 West Lanikaula St., Hilo, HI 96720 USA

View larger version (11K): [in a new window]   Fig. 1 Soil depth vs. temperature in the top 6 cm of soil during slash-and-burn conversion of a tropical dry forest to agriculture. Standard error bars represent variation in depth to which soils were heated and recorded by six temperature-sensitive paints ( )

View larger version (25K): [in a new window]   Fig. 2 Comparison of pre-burn and post-burn pools of plant-available P (resin P, NaHCO3 P) and non-plant-available organic (NaOH P, NaOH + sonication P) plus occluded P in 0- to 5-cm depth soils. Standard error bars were based on plots for burned treatment and samples for the unburned control forest