短期封育对伊犁绢蒿荒漠群落特征的影响

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(P0.05);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。

Effect of short-term fencing on Seriphidium transiliense desert community characteristics

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.