多年围栏封育对高寒草甸产草量的影响

EFFECTS OF ENCLOSE ON THE ALPINE MEADOW FORAGE YIELD

文章分析了连续围栏封育对高寒草甸类草地产草量的影响。结果表明,围栏封育后高寒草甸草地植物鲜重、可食牧草和禾本科牧草鲜重都较放牧样地显著增加(p≤0.05),而放牧地的莎草科牧草鲜重和不可食牧草鲜重较围栏封育样地显著增加(P≤0.05)。其中,2014年度,围栏封育样地的植被盖度、株高较放牧样地分别显著增加了16.67%和147.92%(P≤0.05)。封育5a的草地产草量较放牧样地显著增加了10.86%,围栏封育后,莎草科牧草鲜重、禾本科牧草鲜重都要显著高于放牧样地。可见,封育措施利于高寒草甸植被的恢复,应积极推广封育措施。

the paper analyzed enclose on the alpine meadow biomass. The results showed alpine meadow grassfresh weight, edible grass fresh weight and Gramineae grass fresh weight were significantly increased after enclosed. Cyperaceae grass fresh weight and forbs fresh weights of grazing sample plot were significantly increasedthan enclose sample plot（P≤0.05）. Vegetation coverage and height of enclose sample plot were increased 16.67%, 149.72% than grazing sample plot（P≤0.05）. Aboveground biomass of enclose five years sample plotwere significantly increased 10. 86% than grazing sample plot（ P≤0. 05）. Cyperaceae and Gramineae grassfresh weight of enclose sample plot were significantly higher than grazing sample plot. Short-term Enclose wasbenefited for grassland recovery.