Re-weighting CEAP Grazingland Points for the LRR H Region

Tuesday, February 4, 2020 - 12:30pm to 1:00pm
Event Type: 

Speaker: Guoliang Ma

Abstract: In this presentation, I'll describe the reweighting project for LRR H which borrows strength from the most recent NRI data on rangelands so that the collected rangeland points can represent well non-Federal rangelands. Altogether 3696 points are reweighted. They are the unique points collected during 2004-2014 on-site NRI rangeland surveys. To estimate change, NRI rangeland surveys have repeated data points, but only the most recent observations of those points are used for this project. To calculate the variance or standard error of the estimates, a delete-a-group jackknife replication variance estimation is used.