LOS ANGELES, Dec. 3 (Xinhua) -- At least one-quarter of all nitrogen oxide (NOx) emissions in California's Salton Sea air basin came from soil, according to a new study from the University of California, Davis.
Using isotopic analysis, the study found that annual total soil emissions for the basin were about 11 tons per day on average, which is 10 times larger than the state's current inventory for soil NOx emissions in the region, according to the study published recently in the Nature journal Scientific Reports.
