Effect of grazing intensities on plant community structure and grassland pro- ductivity in desert steppe of Ningxia
The aim of this study was to evaluate the effect of grazing intensities（ 1.50 sheeps/hm＂ , U./3 sheeps/ hm2, 0.50 sheeps/hm2, 0 sheeps/hm2） on plant community structure and grassland productivity in desert steppe of Ningxia Province. The results showed that with the increase of grazing intensity, importance - value of high quality forage decreased obviously, while those of noxious weeds and unpalatable plants increased, and the be 0. 75 sheeps/hm2 according to the principle of sustainable development.
NETL
NSTL
万方数据
维普
