ENTS, It would be cool if we could get some LiDar maps on the ENTS website. Like of Kilmer, Congaree, etc.
JP On Jan 14, 11:10 pm, Steve Galehouse <[email protected]> wrote: > Paul- > > I downloaded and extracted the LiDar LAS Tiled files from > thehttp://gis1.oit.ohio.gov/geodatadownload/osip.aspxserver from the seventh > column after county name(I'm focusing on Summit County right now); from > which column should I download the aerial photos from(second option > mentioned, same server as above)? I have downloaded and installed Fusion. > Thanks for our help--- > > Steve > > > > On Mon, Jan 11, 2010 at 9:39 PM, Paul Jost <[email protected]> wrote: > > Steve, > > > You need to download the 2m point cloud Lidar data for your part of > > northern Ohio at: > >http://lidar.cr.usgs.gov/LIDAR_Viewer/ > > or the Lidar LAS files from here: > >http://gis1.oit.ohio.gov/geodatadownload/osip.aspx > > > Then, you need to download the aerial photo of the corresponding area from > > one of these links: > >http://edcsns17.cr.usgs.gov/EarthExplorer/ > >http://gis1.oit.ohio.gov/geodatadownload/osip.aspx > > You may need to modify the world files for either the Lidar or imagery > > files to get them into the same units (feet vs. meters) and coordinates > > (UTM, etc.) Every state is slightly different with regards to imagery > > formats and coordinate systems used, so the process may be slightly > > different for each state. > > > Finally, download the USFS Fusion software at: > >http://forsys.cfr.washington.edu/fusion/fusionlatest.html > > and the tutorials at: > >http://www.fs.fed.us/eng/rsac/fusion/ > > > Run through them until you are comfortable with the process, then apply > > them to your data. The command line filters need to be tweaked to a larger > > grid to be used with the coarser public data, and some of the other > > parameters should be tweaked, too. Create *.bat batch files like the old > > DOS days to run the scripts for the files all at once and to save settings, > > or perform the lines individually with a shortcut/link. > > > You will need a reasonable fast computer with at least 2GB of memory, > > preferably more. You may need to disable your virus scanner when doing this > > so that the processor doesn't get slowed down by trying to scan these large > > files. Don't have email or other applications active while processing large > > files. > > > When you are ready, I might be of help with setup and procedural issues. > > > Paul > > > ----- Original Message ----- > > *From:* Steve Galehouse <[email protected]> > > *To:* [email protected] > > *Sent:* Monday, January 11, 2010 7:38 PM > > *Subject:* Re: [ENTS] Re: Joyce Kilmer Memorial Forest LiDAR > > ground-truthing expedition 1-2010 > > > Will- > > > Great trees! I envy the forests in the Southern Appalachians--we have Mixed > > Mesophytic Lite here in N Ohio. How accessible are the LiDAR data for other > > parts of the country? > > > Steve > > > On Mon, Jan 11, 2010 at 8:16 PM, Will Blozan > > <[email protected]>wrote: > > >> James, > > >> I too hope the tree is there and that tall! I'll include it in a > >> "potential > >> Rucker" when I get the final numbers from Jess. We can also do a historic > >> Rucker- the tallest hemlock is now stone dead. > > >> Will F. Blozan > >> President, Eastern Native Tree Society > >> President, Appalachian Arborists, Inc. > > >> "No sympathy for apathy" > > >> -----Original Message----- > >> From: [email protected] [mailto:[email protected]] On > >> Behalf Of James Parton > >> Sent: Monday, January 11, 2010 7:51 PM > >> To: ENTSTrees > >> Subject: [ENTS] Re: Joyce Kilmer Memorial Forest LiDAR ground-truthing > >> expedition 1-2010 > > >> Will, ENTS. > > >> I have always planned on re-visiting and re-measuring that pine I > >> measured there almost two years ago. At the time I measured that pine > >> I was very new to height measuring and still needed much honing on my > >> skills. Still, that tree was really tall. An old scraggly fellow. I > >> don't think my measurements are off that much but still I agree with > >> Will in recommending a re-measure of it. Hopefully it has not fell. I > >> got an e-mail from Josh Kelly stating " There is a 161' LiDAR hit > >> quite near James' point. I reckon there could be a tall tree there. > >> The point is at least 150' off the trail. ", So LiDAR may indeed show > >> a tall tree at or near that location. I gave Will an approximate > >> location but the tree cannot be missed from the trail, unless it is > >> gone! > > >> Another thing I have noted to Will. Joy and I came out barely before > >> dark. Measuring in twilight can be challenging and could intoduce > >> error. But I hope on a re-measure my figure comes out close, or better > >> yet dead-on! > > >> Another thing I would like to see. Joyce Kilmer Memorial Forest excels > >> in large-girth trees. With my data, Jess's data etc shurely we can do > >> a Rucker Girth Index. That I would like to see! > > >> James Parton > > >> On Jan 11, 6:43 pm, "Will Blozan" <[email protected]> wrote: > >> > ENTS, > > >> > Last week, I was invited to accompany Josh Kelly, Jess Riddle, and Hugh > >> > Irwin on a trip to Joyce Kilmer Memorial Forest in Graham County, NC. > >> The > >> > purpose of the trip was spawned by some unusually high LiDAR canopy > >> height > >> > "hits" in fly-over data Josh had been reviewing. The data set included > >> > several hits in the mid to upper 170's and a few over 180'. Past ENTS > >> trips > >> > to JKMF have not located heights of the magnitude indicated by the data > >> > except for some white pines in the upper 160's and mid 170's. A pine > >> > measured by James Parton in 2008 at 176' is the tallest tree known from > >> this > >> > forest relic, and needs a re-visit to substantiate its current > >> condition. > >> > The current LiDAR data does not indicate a tree of such height in the > >> area; > >> > perhaps it has fallen. > > >> > In general though, most prior trips focused on the "Poplar Loop" in the > >> > productive flats of the lower, heavily visited cove. Canopy heights of > >> > 140-165', though impressive, were not exceptional. Thus, the extreme > >> canopy > >> > hits caused quite a stir in us southern Appalachian tree hunters! > > >> > The main target was a small cove to the south of the famous Poplar Loop > >> > Trail. The LiDAR data indicated a pocket of exceptionally tall and > >> tightly > >> > clustered trees. Josh had seen the area in the summer and was stunned to > >> see > >> > it was not in the old-growth section but an old clear cut near the > >> homestead > >> > of the prior owners of the tract. In the summertime clutter of leaves > >> Josh > >> > was able to substantiate that the trees were indeed tall but would need > >> to > >> > be visited when the leaves were off for best measurements. > > >> > To get to the cove we proceeded off trail from the Poplar Loop and > >> headed > >> up > >> > a small ravine. At the base of the ravine Jess spotted a fine pignut > >> hickory > >> > 10'1" X 141.1' tall. As we progressed further up the ravine I spotted > >> > another pignut of similar size. This one scaled 10'10" X 142.7' tall. > >> The > >> > ravine offered more tall trees; one of the most impressive was another > >> > pignut with perfect form. I shot up in the crown from below and realized > >> it > >> > would exceed 150'- a height that is quite impressive for the species. > >> Jess > >> > zeroed the base as I went upslope to measure the height. WOW! This > >> slender > >> > tree turned out to be 9'10" X 157.5' tall! > > >> > Jess located a huge snag of a tuliptree that had fallen and the immense > >> bulk > >> > had slid down the slope quite a distance. White ash reached 12'4" in > >> girth > >> > and up to 130.7' tall, and also in this cove were a 14'3" X 166.1' > >> tuliptree > >> > and a 8'6" X 130.1' sugar maple. But stealing the show in the upper > >> reaches > >> > of this cove rimmed with frozen cascades was a large bitternut, 9'2" X > >> > 150.3'. Second new species for the site over 150'! > > >> > Having exhausted the tall tree resources of this small cove, we > >> slide-sloped > >> > with great difficulty over the frozen ground into another small cove. We > >> > found nothing of significance in this one and proceeded on to the "hot > >> > spot". We crested the ridge and WHAM! Shafts of arrow straight tuliptree > >> and > >> > other hardwoods dominated the deep but narrow ravine. There was so much > >> > potential in this dense pocket it was hard to know where to start. We > >> began > >> > by shooting up into the crowns to seek out the tall ones and then > >> consulted > >> > the GPS points for the "hits" of tall canopy we were after. Jess was > >> > exclaiming of straight up laser shots into the young trees of 55 yards > >> > (165')! Jess and I stayed upslope to perform the height routines while > >> Josh > >> > and Hugh measured girth and GPS points of the trees. > > >> > The LiDar data was filtered to only show points over 160 feet so shorter > >> > trees- even though exceptional for the species- would not even show up. > >> Thus > >> > "hiding" in the tall forests of tuliptree were trees that don't quite > >> make > >> > it as tall but are none-the-less record breaking for the species. This > >> was > >> > the case with the first tree I measured in the hot spot. This was a > >> black > >> > cherry that looked really tall yet was obviously shorter than the > >> tuliptrees > >> > around it. I found a solid sighting position while Josh measured the > >> girth. > >> > Well, this tree shattered the former height record by 11 feet! At 152.2 > >> feet > >> > tall this tree is a new 150 club member! > > >> > Josh and Hugh would walk in the base of the ravine and state that, > >> according > >> > to the LiDAR data there should be a 175' tree within 10 feet or so. Sure > >> > enough, the LiDAR was dead-on. The 178 foot hit was also dead on, and > >> the > >> > 178.1 foot tree is now the tallest tree in JKMF and the second tallest > >> > currently known (The Rucker Tuliptree, formerly 178.2', has died back > >> from > >> > the extreme frost of 2008). In all we measured six tuliptrees over 170' > >> and > >> > there are probably a few more in this one small cove. > > >> > After detailed measurements of the tallest in the ravine we headed up a > >> flat > >> > cove to check out more hot spots and check out a 175' LiDAR return. On > >> the > >> > way Jess > > ... > > read more »- Hide quoted text - > > - Show quoted text -
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