Vegetative pattern and soil relationship in a tropical grassland of Khao Yai National Park [Thailand]
1988
Sura Pattanakiat
Seven main community types were found in this study area; pure Imperata cylindrica Beauv., Imperata cylindrica Beauv. mixed with Eupatorium odoratum Linn., Imperata cylindrica Beauv. mixed with Saccharum fusum Roxb., Imperata cylindrica Beauv. mixed with Eupatorium odoratum Linn. and Saccharum fusum Roxb, Imperata cylindrica Beauv. mixed with Hedyotis capitellata Wall., Imperata cylindrica Beauv. mixed with Eriocaulon henryanum Ruhle, and Imperata cylindrica Beauv. mixed with Cratoxylum formosum (Jack) Dyer and Holarrhena antidysenterica Wall. For the chemical properties of soil at 0-5 cm. depth, biomass was highly correlated with the amount of phosphorus in negative mean while at 10-15 cm. of soil depth, biomass was highly positive correlated with pH and negative with potassium. At 20-25 cm. of soil depth, the biomass was positively correlated with pH. At 45-50 cm. of soil depth, the biomass was highly positive correlated with pH and negative with phosphorus.
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