Dedicated to the historical development of the West Liaohe River, one of the three origins of China s 5,000 years of civilization, an academic symposium was recently held in Tongliao, North China s Inner Mongolia Autonomous Region.
Most of the world s saline-alkaline soils are located in arid and semiarid regions that have low rainfall and high evaporation levels, which facilitates the formation of salty land.
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