研究了4个不同施牦牛粪便的处理对高寒草甸植物群落多样性和生产力的短期影响。结果表明,(1)处理 S1,S2和 S3的植物群落盖度显著高于对照(S0)(P <0.05),各处理的植物群落高度与对照(S0)相比都呈上升趋势,且 S3与 S0差异显著(P <0.05)；(2)处理 S1、S2和 S3的 Pielou 均匀度指数与 S0相比逐渐下降,且 S2与 S0有显著差异(P <0.05)。处理 S1、S2和 S3的 Shannon-Wiener 物种多样性指数与 S0相比逐渐下降,且 S2与 S0差异极显著(P <0.01)。而 Simpson 物种多样性指数的变化则表现为无规律性。(3)施牦牛粪便后植物群落的地上总生物量出现增加趋势,且 S2,S3与 S0间达到差异显著(P <0.05)。%In order to find out the short-term impact of different yak manure fertilization gradient to plant di-versity and productivity in alpine meadow,this study compared the alpine meadow plant response characteristics in four different fertilizer treatments (S0 no fertilizer,S1 fertilization 0.1 1 kg/m2 ,S2,fertilization 0.33 kg/m2 , S3,fertilization 0.56/m2 ).The results showed that (1 )the vegetation cover degrees of fertilization treatments (S1,S2 and S3 )were significantly higher than that of S0 (P <0.05).Compared to S0,the vegetation heights of fertilization treatments (S1,S2 and S3 )were showing a rising trend,and there were significant differences be-tween S3 and S0 (P <0.05);(2)The Pielou index of S1,S2,S3 decreased compared with S0,and there were sig-nificantly differences between S2 and S0 (P <0.05).The Shannon-Wiene index and the Pielou index were basi-cally the same,but there were significantly differences between S2 and S0 (P <0.01).The changes of the Simp-son index has no regularity.(3)the total aboveground biomass of plant communities showed an increasing trend after fertilizing,and there were significant differences between S2,S3 and S0 (P <0.05).
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