Thanks, Ann for setting this forum up.
I have been working with the arrowhead lidar data to create canopy cover and height models for lands on the west side of the Superior National Forest. My goal is to produce continuous canopy height and canopy cover rasters (at 20 or 25m cell size) across the entire Forest to help us better select stands to recon for future timber harvests, fuels reduction and wildlife habitat improvement. Just in the testing phases right now and trying to see what height and grid size parameters best represent the stands we're familiar with. I've been using FUSION to process the data. I haven't started using arc 10.1 yet but am looking into it to see if it can do the same things FUSION does better.
I'm wondering if anyone else is using the raw cloud data this way and if anyone has been thinking about (or summarizing) using the lidar data to estimate stand attributes such as basal area, volumes etc.
-Chad Kirschbaum, Silviculturist, Superior National Forest
NRCS and USFS are working on a project in the BWCAW trying to glean some correlations between stand height for ecological mapping purposes. According to RSAC (USFS GIS/RS people in Salt Lake) the only metric possible for this data set is canopy height. Not enough point density for other vegetative metrics. We have some test areas that are 5M by 5M. We have three test areas up near Ely.
-- Jeff Kroll, Soil Scientist, NRCS
I've heard from Jim and Casey about your project in the BW. Who have you talked to at RSAC? I've had them (Brent Mitchell) looking at the data too and they gave me three metrics that we could calculate with some reliability based on the mean post spacing- height, cover and veg density (mid-story), but as you said, they said it would be hard to relate to any specific plot data. I've ben looking at some of our fuels treatments and its looking promising for the midstory...more on that later. Maybe I could show you some of the results over a live meeting or Communicator if you are tied into those systems. Also, I'm working with a professor from MTU who is going to look at this question of correlating stand-level attributes. He has had some sucess in the past with lower quality lidar data. Feel free to call some time if you want to discuss more 218-365-7574.
I have also been making an attempt to produce a canopy cover from the LiDAR data with similar ambitions to do it for the entire state (or at least where data is currently available)! So far I have had some success with processing in Python/ArcGIS 10.0 but haven't made as much progress with it as I would have liked. I'm going to look in to FUSION now although I've never used it before. I think it would be great to collaborate on this, contact me if you are interested!
Molly Martin, Image Analyst, MN DNR Division of Forestry - Resource Assessment
Hi Chad! I have also been working on methodology to create a statewide canopy layer from the LiDAR data. So far I have used python with ArcGIS 10.0, let me know if you would like to collaborate! I have no experience with FUSION but will be happy to learn more about it. Thanks!
-Molly Martin, Image Analyst, MN DNR Forest Resource Assessment
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