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当前位置: 首页 > 文章 > 放牧对围栏封育高寒草甸植被特征和生产力的影响 甘肃农业大学学报 2016,51 (2) 104-110
Position: Home > Articles > Effect of grazing intensity and fence cultivating on vegetation characteristics of alpine meadow Journal of Gansu Agricultural University 2016,51 (2) 104-110

放牧对围栏封育高寒草甸植被特征和生产力的影响

作  者：
陈楠;李广;侯扶江
单  位：
兰州大学草地农业科技学院;甘肃农业大学资源与环境学院;甘肃农业大学林学院
关键词：
围栏封育;高寒草甸;自然放牧;植被特征
摘  要：
【目的】研究围栏封育条件下不同放牧强度对高寒草甸植被影响的特征.【方法】采用定位试验的方法,调查样地内的植物种类,测定植物高度、盖度、密度及地上、地下生物量.【结果】围栏封育后植被的平均高度、鲜草产量围栏内都比自然连续放牧显著增加,优势种多于自然连续放牧,且差异极显著(P<0.05),但群落密度差异不显著(P>0.05);在不同围栏放牧强度下,低放牧率植被盖度、密度均略高于高放牧率,但差异不显著(P>0.05).而低放牧率鲜草产量显著高于高放牧率(P<0.05).【结论】围栏封育和降低放牧率对高寒草甸退化的恢复和建设有重要的作用.
译  名：
Effect of grazing intensity and fence cultivating on vegetation characteristics of alpine meadow
作  者：
CHEN Nan;LI Guang;HOU Fu-jiang;College of Resources and Environmental Sciences,Gansu Agricultural University;College of Forestry,Gansu Agricultural University;Gansu Provincial Key laboratory of Arid Land Crop Science,Gansu Agricultural University;College of Pastoral Agriculture Science and Technology,Lanzhou University;
关键词：
fencing;;alpine meadow;;natural grazing;;vegetation characteristics
摘  要：
【Object】In order to explore the fence cultivating conditions on the impact of different grazing intensity on alpine meadow vegetation characteristics.【Method】Adopting the method of positioning experiment,investigating the plant species,measuring the height,density,aboveground biomass and underground biomass.【Results】The results showed that after fencing closure,the average height of vegetation,grass yield enclosures were better than natural continuous grazing increased significantly,more dominant than natural continuous grazing,and extremely significant difference(P<0.05),but community density difference was not significant(P >0.05);Under different intensive grazing,low grazing rate of vegetation coverage,high density were slightly higher than the grazing rate,but no significant difference(P>0.05).And a low rate of grazing forage yield was significant(P<0.05).【Conclusion】Fencing closure and reduced grazing rates play an important role of recovery construction of alpine meadow type rangeland.

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