The effect of ecological water delivery on the adaptability and regeneration of Tamarix populations in the lower reaches of Tarim River
The Tarim River is the largest inland river in our country.Its basin has formed a diverse natural ecosystem with water as the link from the upper reaches to the lower reaches.However,due to its location in an arid region,the ecological fragility within the basin has been a concern.With the increase in population and water consumption in the middle and upper reaches,the downstream ecological water use of the Tarim River was greatly squeezed,leading to year-round flow cessation,degradation of the ecological environment,and severe land desertification.Since 2000,our country has vigorously implemented ecological water diversion projects,providing artificial intermittent water supply to the downstream of the Tarim River for 20 consecutive years.This has significantly raised the groundwater level in the downstream area,greatly improving the vegetation and species diversity along the desert riverbanks,and making a huge contribution to the restoration and sustainability of the ecosystem in the downstream of the Tarim River.The article summarizes a large number of studies on the adaptive renewal and physiological responses of the Tamarix population in the lower reaches of the Tarim River since the implementation of the ecological water conveyance project.It focuses on the characteristics of Tamarix seedling growth adaptation and the reality of water and salt stress in the downstream area.It explores the relationship between the occurrence of Tamarix seedlings and ecological water overflow in the lower reaches of the Tarim River.It analyzes the reasons for the difficulty of natural renewal of Tamarix populations downstream.Based on this,it proposes a"strong-weak alternation"water conveyance model,aiming to more effectively utilize water overflow to achieve large-scale natural renewal of the Tamarix population in the lower reaches of the Tarim River,reduce the risk of population decline from the perspective of reproductive ecology,and enhance the stability of the desert riparian ecosystem.
the Tarim Riverecological water deliveryTamarix populationadaptability and regeneration
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