Results 21 to 30 of about 314,663 (298)

Using Landsat Time-Series and LiDAR to Inform Aboveground Forest Biomass Baselines in Northern Minnesota, USA

open access: yesCanadian Journal of Remote Sensing, 2017
The publicly accessible archive of Landsat imagery and increasing regional-scale LiDAR acquisitions offer an opportunity to periodically estimate aboveground forest biomass (AGB) from 1990 to the present to align with the reporting needs of National ...
Ram K. Deo   +5 more
doaj   +1 more source

LOW-COST MAPPING OF FOREST UNDER-STOREY VEGETATION USING SPHERICAL PHOTOGRAMMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
This paper is an attempt to respond to the growing need and demand of 3D data in forestry, especially for 3D mapping. The use of terrestrial laser scanners (TLS) dominates contemporary literature for under-storey vegetation mapping as this technique ...
A. Murtiyoso   +3 more
doaj   +1 more source

Strict Forest Reserve Research in the Margin of the Carpathians, the Vár-hegy Case-Study [PDF]

open access: yes, 2013
Sixteen forest reserves are situated in the northern part of Hungary which belongs to the Carpathian region according to EURAC delimitation (Ruffini et al. 2006). These Hungarian forest reserves expand the natural forest remnant/forest reserve net of the
A Borhidi   +20 more
core   +1 more source

Use of UAV Photogrammetric Data for Estimation of Biophysical Properties in Forest Stands Under Regeneration

open access: yesRemote Sensing, 2019
The objective of this study was to assess the use of unmanned aerial vehicle (UAV) data for modelling tree density and canopy height in young boreal forests stands.
Stefano Puliti   +2 more
doaj   +1 more source

Photo Ecometrics for Forest Inventory

open access: yesAnnals of GIS, 1999
Abstract In this paper, we report the results obtained from the application of digital photogrammetry and hyperspectral data analysis for forest inventory purposes. Our long term goal is to provide low-cost yet accurate estimates of as many important forest biophysical parameters as can be measured and inferred with airborne digital cameras. Accuracies
Gong, Peng   +8 more
openaire   +2 more sources

Phenology Modelling and Forest Disturbance Mapping with Sentinel-2 Time Series in Austria

open access: yesRemote Sensing, 2020
Worldwide, forests provide natural resources and ecosystem services. However, forest ecosystems are threatened by increasing forest disturbance dynamics, caused by direct human activities or by altering environmental conditions.
Markus Löw, Tatjana Koukal
doaj   +1 more source

Expanded description and distribution of Opisthotropis tamdaoensis Ziegler, David & Vu, 2008 (Squamata, Natricidae), first record from Yunnan Province of China [PDF]

open access: yesBiodiversity Data Journal
The Tam Dao Mountain Stream Keelback, Opisthotropis tamdaoensis Ziegler, David & Vu, 2008, was previously described, based on one single holotype and subsequently expanded according to four newly-collected specimens from the type locality ...
Siyuan Zhao   +7 more
doaj   +3 more sources

Forest cover estimation in Ireland using radar remote sensing: a comparative analysis of forest cover assessment methodologies [PDF]

open access: yes, 2015
Quantification of spatial and temporal changes in forest cover is an essential component of forest monitoring programs. Due to its cloud free capability, Synthetic Aperture Radar (SAR) is an ideal source of information on forest dynamics in countries ...
Barrett, Brian   +5 more
core   +4 more sources

Stand Regeneration Characteristics of Beech and Fir Forests in Gorski Kotar Region

open access: yesSouth-East European Forestry, 2016
Background and Purpose: Beech-fir forests cover about 13% of forest land in Croatia, thus being a significant forest resource that is dominantly managed by uneven-aged selection management system.
Krunoslav Teslak   +4 more
doaj   +1 more source

Circular 69 [PDF]

open access: yes, 1989
LIST OF FIGURES -- LIST OF TABLES -- PREFACE -- CHAPTER 1— BACKGROUND & OVERVIEW: Alaska’s Native Lands: Alaska Native Claims Settlement Act Lands: Regional Corporations, Village Corporations, Additional ANCSA Land Entitlements, Former Native Reserve ...
Gasbarro, Anthony F., Miller, Ronald K.
core  

Home - About - Disclaimer - Privacy