The driving forces of the ecosystem function change in Heihe wetland national nature reserve

In order to maximize the ecosystem functions of Heihe wetland national nature reserve,the present study analyzed the natural and human factors which affected the changes of wetland ecological functions,and clarified the main driving forces of the wetland area.The results showed that temperature increases in the natural factors was one of the driving forces on the wetland ecosystem environment.Meanwhile the increase of population,expanding of arable land and the rapid development of social economy were the most active factors that lead to the excessive exploitation of natural resources,and they were also the main driving forces that promoted the deterioration of wetland environment.In addition,during the development of the industry and agriculture,waste water and exhaust emissions caused serious wetland pollution,and overgrazing could bring about the wetland function abatement.The unreasonable utilization of water resources caused environmental degradation of wetland ecosystem.Finally,aiming at present problems,the paper put forward the measures to recovery the wetland ecosystem of Heihe Wetland.