A FINE HARVEST IN THE STUDY OF ENVIRONMENTAL EVOLUTION WATER-AND-SOIL MOVEMENT IN THE YELLOW RIVER VALLEY

摘要

ThiS work was one of the key State-funded projects for natural sciences during the period from 1988-1992 under the joint sponsorship of the CAS,the State Planning Commission,the Institute of Geography and the Yellow River Harnessing Committee under the Ministry of Water Conservancy.The project involves some 140 scientists from 19 research units,such as institutes and universities.Its purpose is to make clear the vicissitudes of environmental evolution and water-and-soil changes in the Yel-