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Taxonomic and Geographic Distribution of Total Phosphorus in Florida Surface Soils

^a Institute of Geography and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China
^b Soil and Water Science Dept., University of Florida, Gainesville, FL 32611-0290

View larger version (75K): [in a new window]   Fig. 1. Distributions of Florida soil orders based on the state soil geographic database at a scale of 1:250000 and selected Florida cooperative soil survey program soil sampling sites. White areas are water bodies. Numerous neighboring sampling sites appear coincident at this map scale. White areas are water bodies.

View larger version (30K): [in a new window]   Fig. 2. Cumulative probability curves for total P in 448 Florida surface soils based on soil orders. Dashed lines represent upper baseline concentrations (UBC). Numbers in parenthesis are sample number for each soil order.

View larger version (18K): [in a new window]   Fig. 3. Cumulative probability curves for total P in Florida surface soils: disturbed vs. undisturbed soils. Numbers in parenthesis are sample number for each soil category.

View larger version (73K): [in a new window]   Fig. 4. Map of estimates of total soil P for Florida soil suborders based on the state soil geographic database at a scale of 1:250000 and geographic distribution of potential P elevated sites for disturbed and undisturbed soils. White areas are water bodies.

View larger version (55K): [in a new window]   Fig. 5. Maps of Florida showing factors influencing total P contents in surface soils. (a) Total Fe. (b) Total Al. (c) Phosphate deposits. (d) Commercial phosphate fertilizer application rates.