Characteristics Of Transboundary Aquifer In Heilongjiang (Amur) River Basin

Heilongjiang(Amur)River is an international river in northeast China and adjacent areas,crossing China,Mongolia and Russia.There are three transboundary aquifers in the Heilongjiang(Amur)basin,namely,the Erguna Central Mongolia-Russia transboundary aquifer,the Jibuxun Plain China-Russia transboundary aquifer and the middle and lower reaches of Heilongjiang.The Erguna China-Mongolia-Russia transboundary aquifer is located at the junction of China,Mongolia and Russia,including the Erguna river and shilka River,tributaries of Heilongjiang River.The Sino-Russian transboundary aquifer is located in the plain area of the main stream of Heilongjiang River,Jieya River and Buliya River,with China and Russia on both sides.The sino-Russian transboundary aquifer in the middle and lower reaches of Heilongjiang is located at the confluence of heilongjiang main stream,Wusuli River and Songhua River.Through combing relevant data,the geological,hydrogeological and drainage characteristics of each transboundary aquifer are analyzed,and the amount of groundwater resources is estimated.The following conclusions are drawn:(1)Heilongjiang(Amur)River basin,as a giant basin,involves 8 first-level administrative regions of 3 countries,China,Mongolia and Russia.Most of the national boundaries are divided by the Main river of Heilongjiang.The sino-Russian transboundary aquifer area is the largest in the middle and lower reaches of Heilongjiang.The boundary length of the trans-boundary aquifer between Mongolia and Russia in Erguna is the longest.Among the three transboundary aquifers,the average annual temperature of the Sino-Russian transboundary aquifers in the middle and lower reaches of Heilongjiang is significantly higher than that of the other two.The rainfall of the Sino-Russian transboundary aquifer in Jibuxun Plain and the sino-Russian transboundary aquifer in the middle and lower reaches of Heilongjiang Province is higher than that of the Sino-Mongolian and Russian transboundary aquifer in Erguna.(2)The groundwater types of the three transboundary aquifers in heilongjiang(Amur river)basin are the most widely distributed quaternary pore water aquifer group,and the thickness range of the Sino-Russian transboundary aquifers in the middle and lower reaches of Heilongjiang is the largest.(3)The static groundwater reserves,natural groundwater recharge and natural groundwater recharge modulus of three transboundary aquifers are calculated and compared.The natural groundwater recharge of the Irguna central Mongolia-Russia transboundary aquifer,the Jierbuxun Plain China-Russia transboundary aquifer and the Middle and lower reaches of Heilongjiang Province are 74.06×108m3/a,46.04×108m3/a and 219.43 × 108m3/a,respectively.The natural recharge modules of groundwater are 3.25×104m3/km2·a,4.72×104m3/km2·a,and 8.08×104m3/km2·a,respectively.