Zhongjie Yu


Zhongjie Yu
208 Thaw
4107 O'Hara Street
Pittsburgh, PA 15260



My PhD research involves the development of a dynamic flux chamber system that is capable of collecting soil-emitted nitric oxide (NO) for N isotope measurement. The measured δ15NO will be used in isotopic models to quantify N isotopic fractionations during microbial NO production and reduction, leading to insights into large-scale soil NO emission budget when coupled to the established isoscapes for atmospheric N deposition and other major NOx emission sources. The system will also be used to measure fluxes and N isotopic composition of soil nitrous oxide (N2O) and NO in the Nine Mile Run watershed, PA, to better understand the mechanisms underlying high N retention of urban watersheds.