Results 41 to 50 of about 7,885 (162)

About the benefits of poststratification in forest inventories

Journal of Forest Science, 2007
A large virtual population is created based on the GIS data base of a forest district and inventory data. It serves as a population where large scale inventories with systematic and simple random poststratified estimators can be simulated and the gains ...
J. Saborowski, J. Cancino
doaj   +1 more source

Standards for large-scale forest inventories. A comparative study for Italy

Forest@, 2004
A comparison has been made between methodologies for forest inventories in Italy, considering aspects as design, sampling units, attributes, forest definitions, statistical methods, estimation models, information quality.
doaj  

Effects of sample tree selection and calculation methods on the accuracy of field plot values in area-based forest inventories

Silva Fennica
Accurate field plot data on forest attributes are crucial in area-based forest inventories assisted by airborne laser scanning, providing an essential reference for calibrating predictive models.
Lennart Noordermeer, Terje Gobakken, Johannes Breidenbach, Rune Eriksen, Erik Næsset, Hans Ole Ørka, Ole M. Bollandsås   +6 more
doaj   +1 more source

Impacts of Unsustainable Mahogany Logging in Bolivia and Peru

Ecology and Society, 2004
Although bigleaf mahogany [Swietenia macrophylla King (Meliaceae)] is the premier timber species of Latin America, its exploitation is unsustainable because of a pattern of local depletion and shifting supply.
Roberto F. Kometter, Martha Martinez, Arthur G. Blundell, Raymond E. Gullison, Marc K. Steininger, Richard E. Rice   +5 more
doaj   +1 more source

CLASSIFICAÇÃO DA VEGETAÇÃO SECUNDÁRIA EM ESTÁGIOS DE REGENERAÇÃO DA MATA ATLÂNTICA EM SANTA CATARINA

Ciência Florestal, 2013
This study was designed to determine the criteria and the parameters needed for the inventory and the classification of the secondary forest in the Atlantic coast of Santa Catarina state, in Brazil.
Alexandre Siminski, Alfredo Celso Fantini, Mauricio Sedrez Reis   +2 more
doaj  

Adding Tree Rings to North America's National Forest Inventories: An Essential Tool to Guide Drawdown of Atmospheric CO2. [PDF]

Bioscience, 2022
Evans MEK, DeRose RJ, Klesse S, Girardin MP, Heilman KA, Alexander MR, Arsenault A, Babst F, Bouchard M, Cahoon SMP, Campbell EM, Dietze M, Duchesne L, Frank DC, Giebink CL, Gómez-Guerrero A, García GG, Hogg EH, Metsaranta J, Ols C, Rayback SA, Reid A, Ricker M, Schaberg PG, Shaw JD, Sullivan PF, GaytÁn SAV.   +26 more
europepmc   +1 more source

Traditional and TLS-based forest inventories of beech and pine forests located in Sila National Park: A dataset. [PDF]

Data Brief, 2021
Puletti N, Grotti M, Ferrara C, Scalercio S.   +3 more
europepmc   +1 more source

Forest Carbon Inventory

Banko Janakari, 1970
DOI: 10.3126/banko.v20i2.4795Banko Janakari Vol.20(2) 2010 pp.1 ...
openaire   +2 more sources

ESTIMATING PRECISION OF SYSTEMATIC SAMPLING IN FOREST INVENTORIES

Ciência e Agrotecnologia, 2015
The sampling technique commonly used in forest inventories is the systematic sampling. This study aimed to evaluate the estimator of the variance of the mean proposed by Cochran for a systematic sampling technique in forests with high and low percentages
José Marcio de Mello, Henrique Ferraço Scolforo, Marcel Régis Raimundo, José Roberto Soares Scolforo, Antônio Donizette de Oliveira, Antônio Carlos Ferraz Filho   +5 more
doaj   +1 more source

Multi-source inventory of the forests of the Hebei Forestry Bureau, Heilongjiang, China

Silva Fennica, 2001
A multi-source forest inventory method is applied to the estimation of forest resources in the area of the Hebei Forest Bureau in Heilongjiang province in North-East China.
Tomppo, Erkki, Korhonen, Kari, Heikkinen, Juha, Yli-Kojola, Hannu   +3 more
doaj   +1 more source