Search found 96 matches

by MarkGraham
Tue Mar 30, 2021 10:31 pm
Forum: Alleghenies and Ridge and Valley Areas
Topic: Tionesta Scenic Area
Replies: 0
Views: 66

Tionesta Scenic Area

The Tionesta Scenic Area has a nice trail through older pines and remaining hemlocks.

The attached is LiDAR from circa 2008, there are many trees 120-130 feet and a few touching 140.

Has anyone been through here in the last few years. I heard it was hit hard by a couple storms and HWA.
by MarkGraham
Tue Mar 30, 2021 9:10 pm
Forum: Old Growth and Primary Forests
Topic: Old-growth forest carbon sinks overestimated
Replies: 2
Views: 179

Re: Old-growth forest carbon sinks overestimated

The best forestry practices to fight the Industrial Age increase in atmospheric carbon: 1. Double stand rotations, in other words let trees get bigger in managed forests before they are cut. 2. Assist countries having large amounts of tropical forest to not slash and burn for new farm land but inste...
by MarkGraham
Thu Jan 21, 2021 11:13 am
Forum: Delaware
Topic: New NE height records in Alapocas Run State Park??
Replies: 1
Views: 307

Re: Alapocas Run State Park, along the Brandywine River

These are LiDAR color height maps for the two areas with tall trees, the gps shown at bottom is approximate center of the tall trees area. I added twenty foot contour lines, the very tallest trees in the south of the park are along a steep contour so the height is likely overstated some. But still 1...
by MarkGraham
Thu Jan 14, 2021 6:31 pm
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

Yes that is fine. Good that big forest to the west is protected.
by MarkGraham
Wed Jan 13, 2021 10:01 pm
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

Attached is 2007 LiDAR color height map for Stateline area. Looking at GE which has 2019 photo, all the trees are still there. Red is over 150, orange over 125, yellow over 100. There are several areas with trees over 150, with tallest LiDAR indicated height in 2007 of 159 feet. For tree height, if ...
by MarkGraham
Wed Jan 13, 2021 9:38 am
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

I created the GE overlay from ArcGIS, using the color height map I created in ArcGIS from the circa 2008 LAS point cloud file available on NOAA elevation data.

Sure, I can run LiDAR for a couple other locations. Let me know the approximate GPS coordinates and the size of the grove.
by MarkGraham
Mon Jan 11, 2021 4:05 pm
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

Here's the entire area for which I downloaded and ran the LiDAR. Green is over 75 feet, yellow over 100 feet, and orange over 125 feet.
by MarkGraham
Mon Jan 11, 2021 3:05 pm
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

I will email you GE overlay file. When loading into GE select open vs import. Then the color height map is yellow over 100, orange over 125, and red over 150 (but didn't note any red). If I missed an area let me know and I will download and run the 2008 LiDAR. To do this I use NOAA Elevation Data an...
by MarkGraham
Mon Jan 11, 2021 12:55 pm
Forum: PA - Cook Forest SP
Topic: Anders Run Natural Area
Replies: 0
Views: 324

Anders Run Natural Area

I found this posting on the Native Tree Society trip reports for Anders Run Natural Area. http://www.nativetreesociety.org/fieldtrips/penna/anders_run_natural_area.htm This area is near Warren, Pa, about 35 miles north of Cooks Forest, and is well described on web sites. There is some old growth and...
by MarkGraham
Mon Jan 11, 2021 11:47 am
Forum: Alleghenies and Ridge and Valley Areas
Topic: Undiscovered Old-Growth near Woodward PA??
Replies: 27
Views: 1864

Re: Undiscovered Old-Growth near Woodward PA??

Hello everyone, I hope everyone has been having good holidays, :D I recently found a old book in my small library called, "Seeing Pennsylvania" written by John T. Faris, and published in 1919. Faris goes over the great natural wonders of the whole state of PA, and even describes primeval forest tha...

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