Kriging to estimate vegetation cover - simple, ordinary or universal?

Discussion created by caterwaul on Jan 14, 2014
Latest reply on Jan 14, 2014 by mboeringa2010
I'm trying to do a prediction map of vegetation cover. I've estimated moss cover in a number of plots in a forest stand and wish to predict the cover where data hasn't been collected. I figured kriging could work, but I'm quite a rookie and if someone would point me in the right direction I would be very grateful! I've read that Kriging performed on data that have no geographic trend is called ??????simple kriging?????? if the mean is known or ??????ordinary kriging?????? if the mean is unknown but I don't fully understand the meaning. I tried to do both simple and ordinary kriging (by just clicking "next" all the time...) and got quite different results. With simple Kriging I got a bulls eye effect but not with ordinary kriging, that map was much smoother. Does anyone have an idea on what method is most suitable for my purpose?

Thanks in advance!