In order to understand the impact of different grassland utilization patterns on species diversity and grassland productivity in Jinyang County,five types of grassland utilization patterns(grazing prohibition,grass-stock balance,artificial grassland,returning graz-ing to grassland,and no returning grazing to grassland)were studied in this paper.The results showed that there were 66 species which be-long to 23 families,55 genera in all the plots.The largest number of families,genera and species was found in grass-animal balance are-a,followed by the forbidden grazing plot,the returning grazing plot,the non-returning grazing plot and the artificial grass plot.Gramine-ae,Rosaceae and Leguminosae accounted for the largest proportions,which accounted for 36.65%,25.52%and 13.65%,respectively.The largest number of species was found in the grass-stock balance plot,but the smallest number was founded in the artificial grass plot.The number of species was significantly different in each grassland utilization patterns(P<0.05).There were significant differences in the vegetation coverage of the utilization patterns(P<0.05);the highest yield of grass was found in prohibited grazing plot.grass yield of re-turning grazing plot,artificial grass plot,grass-animal balance plot and non-grazing-grazing plot were decreased by 7.54%,43.50%,46.84%and 57.81%respectively,compared with the prohibited grazing plot.There were significant differences in grass yield among dif-ferent grassland utilization patterns(P<0.05).The effects of different grassland utilization patterns had significant effects on grassland pro-ductivity.
grassland use patternsvegetation coveragegrass yieldproductivityspecies diversity
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万方数据
