Comparison of hydrological and ecological effects on stems and leaves of wild Pennisetum alopecuroides and Cynodon dactylon.

This paper studied growth condition,hydrological and ecological effects of above ground part of wild Pennisetum alopecuroides and Cynodon dactylon.Results showed that wild P.alopecuroides was evidently better than C.dactylon(CK) in stand formation speed,time,height and above ground biomass;the maximum interception rate and amount of wild P.alopecuroides were 45.35% and 5.12 mm,higher than the control;the effective retaining water rate and amount of litter layer of wild P.alopecuroides were 304.88% and 0.19 mm,lower than the control;its stems and leaves coverage could reduce ground temperature and maintain soil water,much more effective than the control.