Effect Of Elevated Expressway Replacing Sea-level Highway On Two-card Wetland Nature Reserve

There are a total of 1 sea level roads in the entire two card wetland,including 13.9km in the two card Wetland Nature Reserve,including 3 bridges,7 culverts,and a bridge channel 4.5km.Although the construction is of great significance for channel access,but may affect the ecological two Wetland Nature Reserve this special report according to the ecological change project,on the sea full of highway engineering change on the impact of the two card Wetland Nature Reserve.This paper first elaborates on the sea full of highway engineering change,including the basic situation of the project,content changes after the entire two card wetland project,project content area two card wetland conservation projects and related planning,coordination and project selection rationality,then on the two card of Wetland Nature Reserve introduced,including the basic situation,natural features,causes,as well as the construction of functional zoning project status,and then through the investigation of the ecological status assessment areas,points out there are ecological effects of the sea full of a road that is produced,changed the hydrology law of wetland,the wetland area decreased,destroy the landscape structure reduce the landscape function and convenient human into protected areas,exacerbated by the interference of birds,as well as the existing ecological problems,mainly the linear cutting damage The influence of human disturbance on the ecological environment of the protected area is becoming more and more obvious,such as the structure and function of the ecosystem,the ecological tourism and other human disturbance.There are several ways to improve the nature reserves after the engineering change.First,engineering will improve the connectivity of wetland ecosystems and eliminate the barrier effects of highways on surface water and wildlife.Second,when the original roadbed is replaced by a bridge,the land under the bridge will be restored to the grasslands or wetlands,so that the protected areas will increase the ecological land use.Third,people can't stop at the roadside as before,and enter the protected area through the roadbed slope,thus reducing the interference of human to the protected area.Therefore,it is advantageous to maintain the ecological integrity of the protected area.