China Vitae

Biography

Yu Tianren, male, Han nationality, is a native of Yunchen, Shandong Province. He graduated from the Northwest Agriculture Institute in 1945.

Following the principles of electroanalysis chemistry and characters of soil, Yu Tianren developed soil electroanalysis. He illustrated the physical and chemical nature centered on oxidization and deoxidization in rice soil, which enabled him to identify conditions of oxidization and deoxidization developed from the qualitative stage to the quantitative stage and illustrated the relationship between quantity factors and intensity factors.

Yu revealed the electrochemical nature of changeable charge soil, enriched and modified some soil chemical theories originated from constant charge soil and contributed to the establishment of a soil chemical system combined with characters of these two soils. He establish a soil chemical system centered on the relationship of electrified particles (colloid charge, ion, proton and electrons) and their chemical performances through 3 monographs which had character and was correlated, enabling this system to become an independent branch.

Yu is an academician of the Chinese Academy of Sciences.