Will, It may not be 150, but in our plot it seems to be consistently 120-130+. And these are young trees (for cypress <120 years old), few over 1 m, over 600/ha, high basal area- 70m2/ha.
When I looked at the Parks canopy map, very few areas were over 100 feet tall. That just isn't accurate. Bruce On Sat, Mar 7, 2009 at 12:34 PM, Will Blozan <[email protected]> wrote: > > Paul, Bruce, > > I briefly looked at the LiDAR data at Congaree last visit and found some > glaring "errors". The highest forest canopy was generally the pine groves > but one tupelo/cypress swamp had a 150'+ canopy over dozens of acres. That > is simply not possible. > > Will F. Blozan > President, Eastern Native Tree Society > President, Appalachian Arborists, Inc. > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Paul Jost > Sent: Saturday, March 07, 2009 12:23 PM > To: [email protected] > Subject: [ENTS] Re: Lidar data availability and possible application > > > Bruce, > > I don't expect LiDAR to measure tree heights very accurately, especially in > free USGS data. I hope that it can help locate potential tall trees that > can be found on the ground and then measured accurately by ENTS methods. It > > could help focus searches on large public lands that would otherwise take > many lifetimes to effectively explore. > > Paul > > ----- Original Message ----- > From: "Bruce Allen" <[email protected]> > To: <[email protected]> > Sent: Saturday, March 07, 2009 6:49 AM > Subject: [ENTS] Re: Lidar data availability and possible application > > > > In the Congaree, Lidar doesn't seem to pick up the highest small > branches. If you looked at the Park Services canopy height map it > just doesn't seem to pick up the max height effectively. > > Bruce > > On Fri, Mar 6, 2009 at 11:32 PM, Paul Jost <[email protected]> wrote: >> >> Gary, >> >> With regards to the application of LiDAR data to our tall tree searches, >> when I've worked out the bugs as much as reasonably possible, I'll post >> some >> screen shots and some info on the process so that others can do the same >> thing for FREE!! It should be in the next week or so.... >> >> Paul >> >> ----- Original Message ----- >> From: <[email protected]> >> To: <[email protected]> >> Sent: Friday, March 06, 2009 8:26 PM >> Subject: [ENTS] Re: Lidar data availability and possible application >> >> >>> Thanks Paul. I am enjoying your posts. >>> >>> Gary >>> Sent via BlackBerry from T-Mobile >>> >>> -----Original Message----- >>> From: Paul Jost <[email protected]> >>> >>> Date: Fri, 06 Mar 2009 18:45:03 >>> To: <[email protected]> >>> Subject: [ENTS] Re: Lidar data availability and possible application >>> >>> >>> >>> Gary, >>> >>> I'm using free LiDAR data from the USGS product page with free FUSION >>> software from the U. of Washington. >>> >>> Paul >>> >>> ----- Original Message ----- >>> From: <[email protected]> >>> To: <[email protected]> >>> Sent: Friday, March 06, 2009 6:34 PM >>> Subject: [ENTS] Re: Lidar data availability and possible application >>> >>> >>>> Paul, >>>> >>>> Just joining the list after a hiatus and I am interested in what you are >>>> doing. I have ArcGIS 9.3 and now a Magellan Mbile Mapper 6. Did you buy >>>> the LIDAR? >>>> >>>> Gary >>>> Sent via BlackBerry from T-Mobile >>>> >>>> -----Original Message----- >>>> From: Paul Jost <[email protected]> >>>> >>>> Date: Fri, 06 Mar 2009 18:28:27 >>>> To: <[email protected]> >>>> Subject: [ENTS] Re: Lidar data availability and possible application >>>> >>>> >>>> >>>> Josh, >>>> >>>> I've been working on the Wright Creek LiDAR data and need to finish >>>> working >>>> on optimizing the generation of the bare earth topographical layer from >>>> the >>>> LiDAR data. Preliminary work shows quite a few trees in the 140's, a few >>>> in >>>> the 150's, and possibly one around 171 feet tall. This software is >>>> pretty >>>> cool. I can measure individual trees, color by tree height, etc. >>>> >>>> I need to verify if any are outliers or noise but would like to ground >>>> check >>>> some. I also haven't checked out much of the creek yet. Did you GPS any >>>> of >>>> the trees when you were there? If so, can you enter a user coordinate >>>> system in your GPS? I'm working in State Plane for NC in feet, the form >>>> that the LiDAR data comes in. I can give you info on how to set up user >>>> coordinate systems in your GPS if you used it there. Otherwise, I'll >>>> have >>>> to find a way to convert the coordinates myself - easier to do with the >>>> more >>>> expensive GIS software. >>>> >>>> Paul >>>> >>>> ----- Original Message ----- >>>> From: "Josh Kelly" <[email protected]> >>>> To: "ENTSTrees" <[email protected]> >>>> Sent: Monday, March 02, 2009 3:56 PM >>>> Subject: [ENTS] Re: Lidar data availability and possible application >>>> >>>> >>>>> >>>>> Paul, >>>>> >>>>> Let me know how using the LIDAR data around Santeetlah goes. If you >>>>> find any great trees, I could ground truth them next time I return to >>>>> the area. I'm quite sure there are 160' poplars in the area (second >>>>> growth) and maybe some 170's. >>>>> >>>>> Josh >>>>> > >>>>> >>>> >>>> >>>> >>>> >>>> >>>> > >>>> >>> >>> >>> >>> >>> >>> > >>> >> >> >> >> > >> > > > > -- > Bruce P. Allen > Springfield, NH > > > > > > > > > > -- Bruce P. Allen Springfield, NH --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
