US pulp and paper volume in the week was up 13.3%, Canada 2.7% higher and Mexico down 35.9%.
North American lumber and wood products rail freight for the week at 5,752 carloads rose 17.2% above a year ago and through 13 weeks at 65,296 carloads was up 7.3%, AAR showed.
Primary forest products carloads were down 10.6% and 5.1% respectively.
Total North American rail volume for the first 13 weeks of 2011 on 13 reporting US, Canadian and Mexican railroads totaled 4.896 million carloads, up 4.2% compared with the same point last year. The comparison week from 2010 includes the Good Friday holiday.