The influence of tree thinning on grass dry matter yield,with and without grazing by herbivore game species in the Marakele Park,South Africa
In semi‐arid savannas of South Africa an increase in woody plant density ( bush encroachment) results in the suppression of grasses.Bush encroachment is of great concern in the Marakele Park and a mechanical tree thinning program was applied during 2002/03.There were, however,concerns about the effectiveness of this measure,especially in view of high numbers of grazing game species that were re‐introduced into the park.The objective of the study was to quantify the effect of the mechanical tree thinning on grass dry matter (DM) yield in areas protected from and exposed to grazing.
bush encroachment grasses productivity savanna
G.N.Smit F.C.Pienaar
Department of Animal,Wildlife and Grassland Sciences,University of the Free State,P.O.Box 339,Bloem fontein 9300,South Africa.
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）