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GRS Completes First (2016) Kuskokwim River Forest Inventory Field Season

July 31, 2016 - For Immediate Release

Geographic Resource Solutions completed its first BLM Alaska Forest Inventory field season in the middle Kuskokwim River drainage.  Field sampling took place over a five-week period, beginning on June 13th and ending on July 16th,  during which field staff sampled 148 field sites while traveling approximately 210 miles from east to west along the Kuskokwim River.  Sample stands were selected for use in GRS's subsequent application of their Discrete Classification Mapping Methodology (DCMM) based on the processing of Landsat 8 imagery from 2014 and 2015.  Sample stands were selected on the basis of image stratification results that identified the largest homogeneous areas of the different spectrally determined strata that represented the different forestlands in the middle Kuskokwim River drainage.  Sample sites were accessed from points traveled to by boat along the river(s) and then cross-country hiking.

GRS staff implemented the line-point transect sampling methodology to develop the usual species/landscape feature-specific canopy cover estimates, but which GRS has adapted to also develop forest inventory estimates that include species-specific estimates of trees/acres, heighth, cubic volume, and biomass (dry tons/acre).  All trees, shrubs, herbaceous and non-vascular plants were recorded, as well as landscape features that represented abiotic site features related to the sampled plant communities.  Integrated in this sampling approach were Brown's transects to estimate both counts of both coarse by decay class and fine woody debris by fuel class.  The resulting sample area summary data produced species-specific estimates of canopy cover, quadratic mean diameter, trees/acre, average heighth, cubic volume/acre, and biomass (dry tons)/acre.

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GRS Completes Second (2017) Kuskokwim River Forest Inventory Field Season

July 31, 2017 - For Immediate Release

Geographic Resource Solutions completed its second BLM Alaska Forest Inventory field season in the eastern portion of the middle Kuskokwim River drainage.  Field sampling took place over a three-week period, beginning on July 10th and ending on July 29th,  during which field staff sampled 66 field sites and visited an additional 14 field sample areas while traveling approximately 270 miles starting in Lime Village along the Stony River and then continuing along the Kuskokwim River and portions of the Swift, Cheeneetnuk, and Selatna rivers, sampling as far east on the Kuskokwim River as 10 miles north of the mouth of the Selatna River.  Sample stands were selected for use in GRS's subsequent application of their Discrete Classification Mapping Methodology (DCMM) based on the processing of Landsat 8 imagery from 2015 and 2016.  Sample stands were selected on the basis of image stratification results that identified the largest homogeneous areas of the different spectrally determined strata that represented the different forestlands in the middle Kuskokwim River drainage.  Sample sites were accessed from points traveled to by boat along the river(s) and then cross-country hiking.

GRS staff implemented the line-point transect sampling methodology to develop the usual species/landscape feature-specific canopy cover estimates, but which GRS has adapted to also develop forest inventory estimates that include species-specific estimates of trees/acres, heighth, cubic volume, and biomass (dry tons/acre).  All trees, shrubs, herbaceous and non-vascular plants were recorded, as well as landscape features that represented abiotic site features related to the sampled plant communities.  Integrated in this sampling approach were Brown's transects to estimate both counts of both coarse by decay class and fine woody debris by fuel class.  The resulting sample area summary data produced species-specific estimates of canopy cover, quadratic mean diameter, trees/acre, average heighth, cubic volume/acre, and biomass (dry tons)/acre.

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GRS Awarded BLM Alaska Forest Inventory Serivces Contract


November 12, 2015 - For Immediate Release

Geographic Resource Solutions (GRS) was recently awarded a 5-year Blanket Purchase Agreement by the Bureau of Land Management, Alaska (BLM ALaska) to provide forest inventory and mapping services.  In awarding this contract, BLM Alaska recognized that the integrated field inventory and mapping methodologies that GRS has developed can be used in forest inventory applications to estimate and map tree volume and biomass, in addition to the species-specific canopy cover, fire fuel, and plant association/alliance type mapping similar to the results GRS produced during the Galena Forest Biomass Inventory and Planning Project and the Tonsina Valley Forest Inventory and Mapping Projects.

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UN-FAO Resource Sampling Study Recommends Use of Line-point Transect and GRS Densitometer


October 30, 2015 - For Immediate Release

"The line-point transect forest cover assessment method was the most accurate,least expensive, and most easily applied among the four methods tested. This method is scientifically accurate and records forest canopy and floor cover as a set."

This is the major conclusion of a recent study undertaken by the Food and Agriculture Organization of the United Nations (FAO) when they recently presented the results of their study "Testing Field Methods for Assessing the Forest Protective Function for Soil and Water" this past September at the XVI World Forestry Congress held in Durban, South Africa.  In conjunction with this study the FAO has also published a second paper "Field Guide for Rapid Assessment of Forest Protective Function for Soil and Water" that describes their recommended use of the line- point transect and GRS Densitometer to assess forest ecosystems.

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ESA 2014: GRS NVCS Mapping - The Future is Now !!


Recently completed National Vegetation Classification (NVCS) vegetation/land cover map data sets for Lassen Volcanic National Park and Redwood National and State Parks include species-specific cover mapping and NVCS detailed associations and alliances.  These new map data sets represent the future of NVCS vegetation mapping and should be considered "state-of-the-art."

On August 14, 2014, Dr. Janet Franklin of Arizona State University presented a summary of "the state of the art and the likely progress of uses of [National Vegetation Classification System] vegetation mapping."  Her presentation was the final portion of the Mapping with the National Vegetation Classification: Purpose, Value, and Method session at the Ecological Society of America Annual Meeting held in Sacramento, CA that was organized by Todd Keeler-Wolf1 and Julie Evens2.

In her summary slide Dr. Franklin showed a progression through time representing the idea that in the past lower resolution imagery provided more generalized NVCS types and that presently "new technologies and data sources," including higher resolution imagery enabled the development of "categorically fine-scale vegetation  information [NVCS classes].  She predicted that sometime in the future, species-specific cover modeling would become available due to improvements in technology, imagery, and processing.

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Stumpf Line-point Transect Methodology, Results, and Benefits Presentation at ESA, 2014


GRS has posted the Line-point Methodology Presentation made by Ken Stumpf of GRS, Director Of Resource Management Applications on August 13, 2014 at the Ecological Society of America Annual Meeting in Sacramento, CA., under the Densitometer - Canopy Cover Sampling of our Presentations, Publications, and Software subject.  This presentation was titled "A Venerable Range Management Field Data Collection Technique Used to Develop Plant Community Cover and Frequency Characteristics Provides Unexpected New Levels of Detailed Species-specific Information."

A version of the presentation with notes and comments is available at this link "A Venerable Range Management Field Data Collection Technique Used to Develop Plant Community Cover and Frequency Characteristics Provides Unexpected New Levels of Detailed Species-specific Information - with Comments".

For the description of this presentation from the ESA 2014 Annual Meeting website, please use this link.

For further information about these presentations or the materials contained within them, contact Ken at GRS by email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it or phone at (707)-822-8005.

 

 


Redwood National and State Parks Vegetation Classification and Mapping Project Completed !  More than Just a Color-coded Type Map!


December, 2013 - The Redwood National and State Parks Vegetation Classification and Mapping Project was completed by Geographic Resource Solutions (GRS) in late June, 2013.  Multiple map data sets representing both raster pixel classification efforts and aggregated stand level mapping efforts were developed under the guidelines of the NPS National Vegetation Mapping Program.  These data sets represent a new level of detailed, quantitative, species-specific information in addition to the standard National Vegetation Classification System (NVCS) type designation(s).  GRS's use of the Discrete Classification methodology also enabled the development of individual species-specific cover component estimates by size class, canopy layer, the "bird's-eye view, and in total; as well as estimates of quadratic mean diameter and stems per acre.

 An article excerpted from the Fall/Winter 2013 Kaleidoscope Newsletter of the NPS-Klamath Network that describes more about this project may be accessed at this link.

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GRS Releases Galena Forest (Biomass) Inventory and Management Plan Report


January, 2013 – In late January Geographic Resource Solutions (GRS) released the Galena Forest Inventory and Management Plan Report developed for a consortium of the Louden Tribal Council, the Galena School District, and the City of Galena, Alaska. This report describes the detailed vegetation/land cover/biomass inventory developed for approximately 1.25 million acres of wildlands in the vicinity of Galena that was used to estimate forest growth and biomass availability and project the magnitude and sustainability of future harvest levels through the end of this century. This information will provide the basis for a determination of the feasibility of developing biomass fueled power generation for the community of Galena. This Project was partially funded by grants from the Alaska Energy Authority and the Bureau of Land Management.

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GRS's ASPRS 2012 Presentations Posted

GRS has recently posted the two presentations made by Ken Stumpf of GRS, Director Of Remote Sensing Applications, under the Remote Sensing Page of our Presentations and Workshops subject.  These presentations were titled Accuracy Assessment, "The Emperor's New Clothes," and Other Fairy Tales and The Lassen Volcanic National Park Comparative Mapping Project - Preliminary Results.

Two versions of The Lassen Volcanic National Park Comparative Mapping Project - Preliminary Results were posted.  One version has notes that describe information shown on many of the slides, whereas the other version does not.

For further information about these presentations or the materials contained within them, contact Ken at GRS by email or phone.

 

GRS Presents Image Classification Workshop at ASPRS 2012 Convention

Ken Stumpf and John Koltun of Geographic Resource Solutions presented an image classification workshop titled Image Classification Considerations for the Development of Accurate, Detailed, and Quantitative Land Cover Map Data on Monday March 19th, 2012 from 7:45 am - 5:15 pm at the ASPRS 2012 Annual Conference in Sacramento, CA.

 

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Lassen National Park Accuracy Assessment Presentation Posted:

We have posted the slides from a recent land cover mapping accuracy assessment presentation at ASPRS based on work performed at Lassen Volcanic National Park by Ken Stumpf on our Remote Sensing Downloads page.

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2011 Alaska Mapping & Surveying Presentation Posted: Landcover Mapping In Alaska

We have posted the slides from a new land cover mapping presentation by Ken Stumpf on our Remote Sensing Downloads page.

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