短期封育对伊犁绢蒿荒漠群落特征的影响

摘要

本研究以新源县和呼图壁县典型的伊犁绢蒿(Seriphidium transiliense)荒漠为研究对象,采用野外调查的方法,测定封育区和放牧区伊犁绢蒿荒漠植被生态经济类群、群落特征及其多样性,研究不同气候区荒漠群落特征对封育的响应规律,为草地资源的合理利用提供一定的基础资料和科学依据.结果表明:1)封育围栏内,草原植物群落的高度、盖度、密度和生物量有大幅度提高,显著高于围栏外(P<0.05);2)在封育围栏内,草地群落 Pielou均匀度指数增大,香浓指数和Patrick指数减小,伊犁绢蒿荒漠植被恢复明显.%We studied the response of desert community characteristics to fencing in different climatic zones, which was aimed at providing certain basic information and scientific basis for the rational utilization of grass-land resources.Seriphidium transiliense deserts in Xinyuan and Hutubi counties were selected as the research areas,and the eco-economic group,community characteristics,and its diversity were analyzed using a field-survey sampling method.The results showed that:1)The height,cover,density,and biomass of the grass-land community increased significantly,which was significantly higher than those outside the fence;2)Under the fence,Pielou's evenness index of grassland communities increased,while the fragrant index and Patrick in-dex decreased,and the desert vegetation comprising S.transiliense recovered remarkably.