Soil Characteristics of Leucaena Leucocephala Stands with Different Densities

Abstract

Soil characteristics of Leucaena leucocephala stands with different densities were studied. The results showed that soil pH, total P and available K were significantly smaller than the controls, whereas their total N was significantly greater than the control in all density stands. Compared with the controls, soil organic matter was significantly increased in 2 trees·m2 stand, soil total K significantly decreased and available N significantly increased in 4 and 8 trees·m2 stands; Soil available P significantly increased in 2 trees·m2 stand. Soil Urease activity in 4 and 8 trees·m2 stands was significantly greater than the control, phosphatase activity was significantly smaller than the control in 2 trees·m2 stand, whereas catalase activity was significantly smaller than the controls in the three density stands.