渾善達克沙地榆的生態(tài)學特性與保護策略

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Abstract：As a cryptic vegetation type in the temperate steppe，the sparse forest grassand of sand elm（Ulmus pumila L.var.sabulosa） in the Otindag Sandy Land have played a crucial role in wind prevention，sand fixation，soil improvement，and biodiversity maintenance. In recent years，climate change and intense human activities have caused a significant decline in the sand elm population，and this trend continues to worsen.However，current research has not systematically investigated the ecological characteristics and conservation strategies of the sand elm population. In this paper，we explored the physiological and ecological characteristics， reproductive strategies，symbiotic relationships，and responses of sand elm to climatic and anthropogenic distur bances，and proposed conservation measures accordingly. The results showed that sand elm employed a variety of ecological strategies to cope with disturbances，but its future development largely dependson the influence of human activities.Conservation measures should consider the ecological characteristics of sand elm，focusing on enhancing ecosystem stability through monitoring plots，increasing biodiversity，and reducing wind and sand erosion.Future research should explore how to balance ecological protection with regional economic development，and investigate the integration of eco-tourism and other emerging industries to promote the restoration and sustainable development of sand elm.

Key Words：Otindag Sandy Land； Ulmus pumila L. var. sabulosa；Elm sparse forest grassland ；Ecological adap tation；Ecological strategy

位于內(nèi)蒙古錫林郭勒高原中部的渾善達克沙地是我國最大的沙地之一，面積約 萬 。（剩余16709字）