Analysis of Community Characteristics and Plant Diversity in Different Degraded Stages of Seriphidium transillense Desert

【 Objective 】 To explore the vegetation characteristics and biodiversity of degradation succession in desert in spring in the hope of providing some basic data for the establishment of ecological restoration and sustainable utilization plan.【 Method 】The Seriphidium transiliense desert was taken as the research object, and the community characteristics and vegetation biodiversity indexes in lightly degraded and heavily degraded desert were studied though field investigation.【 Result 】(1) The community height decreased by 20.8%, and the community density increased by 6.1 times with the degree of degraded succession increased (P<0.05), but the response of community cover and aboveground biomass on degradation was not significantly diffident (P>0.05). (2) Patrick richness index, Simpson dominant index, Shannon-Wiener diversity index and Pielou evenness index significantly increased by 73.5%, 52.1%, 91.3% and 26.9% with the increased degree of degraded succession (P<0.05), respectively. 【 Conclusion 】During the process of degeneration succession, the Seriphidium transiliense desert is tending towards low and dwarfing vegetation population and complicated community.