Analysis of Ecological Wetland of Erzi Lake in Manzhouli in Inner Mongolia Autonomous Region

【摘要】：正Erzi Lake wetland ecology natural protected field is located in Manzhoulimunicipality in Hulun-beieralliance in Inner MongoliaAutonomous Region.This area is in the middle latitudesbinnentief land. Hailar River is the master riverin the vicinity.The topography presents south higher and north lower in total. The geomorphic typeof wetland belongs to Hailaralluvial plain.The region belongs to drought and semiarid distributing area in our country,yet can also forms a large area of wetland.The main reasons are the peculiar-geography circumstance and geology condition.The mode of occurrence,pattern,intake,runoff and discharge of ground water,water abundance and water quality of water-bearing stratum are all limited by geological structure,formation lithology,landform,hydrology and meteorological condition.The groundwater in this region can be divided into three types.The first is dash diluvial pore water of Quaternary system.The second is bed rock ablated crack water of low mountain area.The third is clastic rockcrackpore water of low mountain area.The main provisionresource of the groundwater in this region is that the atmospheric precipitationinfil-trating vertically and providing directly,the side gaining of groundwater in neighbor region,the supplement of surface water and the alluvial aquifer of Quaternary system supplying vertically to coal measure strata abated crack aquifer.The main discharge condition is Hailar Riverrunoff,soil evaporation and pit draining-discharging groundwater.The origin includes adequate water resource supplement and the harmful runoff and discharge.This paper analyzes particularly the district geology structure,formation,hydrogeology and research on the origin of the Erzi Lake ecology wetland from hydrogeology angle particularly.