Results 21 to 30 of about 233,460 (267)

Forest structure and carbon dynamics in Amazonian tropical rain forests [PDF]

Oecologia, 2004
Living trees constitute one of the major stocks of carbon in tropical forests. A better understanding of variations in the dynamics and structure of tropical forests is necessary for predicting the potential for these ecosystems to lose or store carbon, and for understanding how they recover from disturbance.
Vieira, Simone, de Camargo, Plinio Barbosa, Selhorst, Diogo, da Silva, Roseana, Hutyra, Lucy, Chambers, Jeffrey Q, Brown, I Foster, Higuchi, Niro, dos Santos, Joaquim, Wofsy, Steven C, Trumbore, Susan E, Martinelli, Luiz Antonio   +11 more
openaire   +5 more sources

Forest Biomass Mapping Using Continuous InSAR and Discrete Waveform Lidar Measurements: A TanDEM-X/GEDI Test Study

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article addresses the implementation of an above ground biomass (AGB) estimation scheme relying on the height-to-biomass allometry at stand level in the context of the synergistic use of continuous TanDEM-X (bistatic) interferometric synthetic ...
Changhyun Choi, Matteo Pardini, John Armston, Konstantinos P. Papathanassiou   +3 more
doaj   +1 more source

Integrating terrestrial and airborne laser scanning for the assessment of single-tree attributes in Mediterranean forest stands

European Journal of Remote Sensing, 2018
The development of laser scanning technologies has gradually modified methods for forest mensuration and inventory. The main objective of this study is to assess the potential of integrating ALS and TLS data in a complex mixed Mediterranean forest for ...
Francesca Giannetti, Nicola Puletti, Valerio Quatrini, Davide Travaglini, Francesca Bottalico, Piermaria Corona, Gherardo Chirici   +6 more
doaj   +1 more source

Using inventory variables for practical biodiversity assessment in plantation stands

Forest Systems, 2022
Aim of study: Practically and simply assessing biodiversity by using inventory variables in four types of forest plantation stands (mixed and pure) including species such are chestnut, blue gum and maritime pine.
Marija Cosovic
doaj   +1 more source

Large Scale Structure in the Lyα Forest [PDF]

Symposium - International Astronomical Union, 1997
We have conducted a survey of the Lyα forest in the redshift domain 2.15 < z < 3.37 in front of nine QSOs within a 1o field to probe spatial structure along planes perpendicular to the line-of-sight. We find evidence for correlations of the Lyα absorption line wavelengths in the whole redshift range, and, at z > 2.8, of their equivalent widths.
G. Williger, A. Smette, C. Hazard, J. Baldwin, R. McMahon   +4 more
openaire   +1 more source

Associations between canopy openness, butterfly resources, butterfly richness and abundance along forest trails in planted and natural forests

European Journal of Entomology, 2017
Increasing the biodiversity in plantations of trees is an important issue because plantations have replaced many natural and semi-natural ecosystems worldwide.
Atsushi OHWAKI, Saki MAEDA, Masahiko KITAHARA, Takashi NAKANO   +3 more
doaj   +1 more source

Differences in the structure, species composition and diversity of primary and harvested forests on Changbai Mountain, Northeast China

Journal of Forest Science, 2010
Broadleaved-Korean pine (Pinus koraiensis) mixed forest is a typical vegetation type in the eastern Eurasian continent. We compared the structure, composition and diversity of a primary forest and a logged forest for effective management and regeneration
DONGKAI SU, DAPAO YU, LI ZHOU, XIAOKUI XIE, ZHENGGANG LIU, LIMIN DAI   +5 more
doaj   +1 more source

Forest restoration thinning accelerates development of old‐growth characteristics in the coastal Pacific Northwest, USA

Conservation Science and Practice, 2023
A century of industrial‐scale management has transformed vast swaths of forest land across the Pacific Northwest (PNW), USA, from ancient forests with complex structure and diverse habitats to young forests with simple structure and dominated by few ...
Michael J. Case, Ailene K. Ettinger, Kavya Pradhan   +2 more
doaj   +1 more source

Using Model Analysis to Unveil Hidden Patterns in Tropical Forest Structures

Frontiers in Ecology and Evolution, 2021
When ordinating plots of tropical rain forests using stand-level structural attributes such as biomass, basal area and the number of trees in different size classes, two patterns often emerge: a gradient from poorly to highly stocked plots and high ...
Nicolas Picard, Frédéric Mortier, Pierre Ploton, Jingjing Liang, Géraldine Derroire, Jean-François Bastin, Narayanan Ayyappan, Fabrice Bénédet, Faustin Boyemba Bosela, Connie J. Clark, Thomas W. Crowther, Nestor Laurier Engone Obiang, Éric Forni, David Harris, Alfred Ngomanda, John R. Poulsen, Bonaventure Sonké, Pierre Couteron, Sylvie Gourlet-Fleury   +18 more
doaj   +1 more source

Retention of harvest residues promotes the accumulation of topsoil organic carbon by increasing particulate organic carbon in a Chinese fir plantation

Forest Ecosystems
Background: As commonly used harvest residue management practices in subtropical plantations, stem only harvesting (SOH) and whole tree harvesting (WTH) are expected to affect soil organic carbon (SOC) content.
Jiamin Yang, Ke Huang, Xin Guan, Weidong Zhang, Renshan Li, Longchi Chen, Silong Wang, Qingpeng Yang   +7 more
doaj   +1 more source