1Trlica M J, Rittenhanse L R.Grazing and plant perfor-mance[J].Ecologi- cal Application, 1993,3(1) : 21-23.
2Dyer M 1, Turner C L, Seastedt T R.Herbivore and its consequences[J]. Ecological Application, 1993,3(1) : 10.
3Mcnaughton S J.Grazing as an optimization process:grass ungulate rela- :ionships in the Serengeti [J].American Nmuralist, 1979,5:691-703.
4McNanghton S J.Compensatory plant growth as a response to herbivory[J]. Oikos, 1983,40: 329-336.
5McNaughton S J.Grazing lawns:Animals in herds, planform, and coevo- lution[J].American Naturalist. 1984,124 : 863-886.
6Me Naughton S J.Serengefi migritory wildebeest facilitation of energy fol- low by grasing[J].Seienee, 1976, 191 : 92-94.
7Dyer M I.The effects of red-winged Blauk birds on biomass produetion of am grains[J].J.of Ap-plied Ecology, 1975,12 : 719--726.
8Belsky A J.Does hebivory benefit plants A review of the evidenee[]].The American Naturalist, 1986,127(6):871-891.
9Milehunas D G., Lanemcoth W K.Quantita-tive effects of grazing onvege- ation and soils over aglobal range of enviroments[J].Eeol. Monogr., 1993, 53 : 327-366.
10Oesterheld M, McNaughton S J.Effects of stress and time for recover), on the mnount of compensatory growth after grazing[J].Oecologia, 1991,85 : 305 -313.
