Results 11 to 20 of about 521,602 (165)

Comparison of the influence of some stand structural parameters on black pine seedling density and growth

Turkish Journal of Forestry, 2019
Due to the difficulties in natural regeneration of black pine (Pinus nigra Arnold) forests, the influences of different stand structural parameters on regeneration success should be well understood.
Emirhan KÖSEOĞLU, Ferhat KARA
doaj   +1 more source

Lodgepole Pine and White Spruce Thinning in Alberta―A Review of North American and European Best Practices

Land, 2023
A significant portion of the harvested land base in western Canada is becoming old enough or entering a phase where thinning is a legitimate forest management option. A comprehensive review of the existing knowledge of commercial thinning (CT) treatments
Mark Baah-Acheamfour, Amanda Schoonmaker, Mark Dewey, Brian Roth   +3 more
doaj   +1 more source

Impactos da redução da pluviometria na biomassa aérea da Floresta Amazônica Impacts of a reduction in precipitation in the aerial biomass of the Amazon Forest

Revista Brasileira de Engenharia Agrícola e Ambiental, 2012
Este estudo foi desenvolvido na Floresta Nacional de Caxiuanã, Pará, Brasil, com o objetivo de se analisar os efeitos da redução da precipitação pluvial na biomassa aérea e a mortalidade das árvores na área basal de uma floresta tropical, dentro do ...
Glayson F. B. das Chagas, Vicente de P. R. da Silva, Antonio C. L. da Costa, Vanessa de A. Dantas   +3 more
doaj   +1 more source

Spatiotemporal trends of black walnut forest stocking under climate change

Frontiers in Forests and Global Change, 2022
Basal area is a key measure of forest stocking and an important proxy of forest productivity in the face of climate change. Black walnut (Juglans nigra) is one of the most valuable timber species in North America.
Aziz Ebrahimi, Akane O. Abbasi, Jingjing Liang, Douglass F. Jacobs   +3 more
doaj   +1 more source

THE BULGE IN THE BASAL PLANE AREA OF CUPRATE SUPERCONDUCTORS [PDF]

International Journal of Modern Physics B, 2005
The bulge in the doping dependence of the basal plane area of cuprate superconductors is shown to be an effect of the particular inhomogenous electronic structure created by the dense packing of paired self-protected singlets (PSPS) in CuO 2 lattices.
openaire   +3 more sources

A survey on the accuracy of the inventory method of sample plots with 1000m2 area under random-systematic network for estimation of amount and distribution of stand volume, basal area and tree number in diameter classes [PDF]

تحقیقات جنگل و صنوبر ایران, 2007
After performing the first and Second 20-years periods of forest projects, even with proper execution of the programs, most of them have many problems yet.
Mohammad Amini, Hashem Habashi, Roja Amini   +2 more
doaj  

Flora e estrutura da vegetação arbustivo-arbórea de uma área de caatinga do Seridó, RN, Brasil Flora and structure of the tree and shrub vegetation of the caatinga at Seridó, Rio Grande do Norte State, Brazil

Acta Botânica Brasílica, 2005
Para testar a hipótese de que a vegetação do Seridó é aberta e de baixo porte, mesmo em local preservado, foi feito o levantamento fitossociológico de uma área na Estação Ecológica do Seridó, Serra Negra do Norte, RN, Brasil.
Isaac Lucena de Amorim, Everardo V.S.B. Sampaio, Elcida de Lima Araújo   +2 more
doaj   +1 more source

Biodiversity conservation through indigenous agricultural practices: Woody species composition, density and diversity along an altitudinal gradient of Northern Ethiopia

Cogent Food & Agriculture, 2019
The greatest human impact on the forest ecosystems such as loss of forest area, habitat fragmentation, and soil degradation leads to decline biodiversity.
Yikunoamlak Gebrewahid, Selemawi Abrehe
doaj   +1 more source

Fitossociologia e similaridade florística entre trechos de Cerrado sentido restrito em interflúvio e em vale no Jardim Botânico de Brasília, DF Phytossociology and floristic similarity between plateau and valley `Cerrado` woody vegetation in the Brasília Botanic Gardens, Federal District, Brazil

Acta Botânica Brasílica, 2004
Este estudo teve como objetivo verificar a composição florística, densidade e área basal do componente lenhoso do cerrado sentido restrito em duas situações num gradiente topográfico, designadas interflúvio (I) e vale (V), no Jardim Botânico de Brasília,
Mônica Souza da Fonseca, Manoel Cláudio da Silva Júnior   +1 more
doaj   +1 more source

Potential of Modern Photogrammetry Versus Airborne Laser Scanning for Estimating Forest Variables in a Mountain Environment

Remote Sensing, 2019
Digital stereo aerial photographs are periodically updated in many countries and offer a viable option for the regular update of information on forest variables.
Sami Ullah, Matthias Dees, Pawan Datta, Petra Adler, Mathias Schardt, Barbara Koch   +5 more
doaj   +1 more source