Results 71 to 80 of about 4,893 (212)

Topography constrains the climatic response of treeline migration in Taiwan's subalpine forests

Ecography, EarlyView.
Treelines are moving upslope, but the rates and drivers differ among different regions, globally. Many studies have examined the relationship between treeline movement and climate change, particularly rising temperature, while the role of topographical factors has received much less attention, despite the longstanding recognition of its importance.
Kuan‐Yu Chen, Jonathan Peereman, J. Aaron Hogan, Teng‐Chiu Lin   +3 more
wiley   +1 more source

Towards a universal lidar canopy height indicator

Canadian Journal of Remote Sensing, 2006
A light detection and ranging (lidar) canopy height study was conducted with 13 datasets collected using four different models of airborne laser terrain mapper (ALTM) sensors over 13 widely variable vegetation types ranging in average height from
Chris Hopkinson, Laura Chasmer, Kevin Lim, Paul Treitz, Irena Creed   +4 more
openaire   +1 more source

Regeneration failure, fire, topography, and climate interact to drive temperate wet forest landscapes into fire traps

Ecography, EarlyView.
Where early successional forests are more flammable than old‐growth forests, forested landscapes are vulnerable to shifting into ‘fire traps' through positive feedbacks, where fire leads to more fire. These feedbacks are amplified by increased flammability driven by climate change, the presence of non‐native flammable plant species, and slowed ...
George L. W. Perry, Craig E. Simpkins, Kiri Reihana, James M. R. Brock, Peter J. Bellingham   +4 more
wiley   +1 more source

Forest drought resistance distinguished by canopy height

Environmental Research Letters, 2018
How are the survival and growth of trees under severe drought affected by their size? While some studies have shown that large trees are more vulnerable to drought than smaller trees, others found that small trees are the more vulnerable. We explored the potential relationships between canopy height and forest responses to drought indicated by tree ...
Peipei Xu, Tao Zhou, Chuixiang Yi, Wei Fang, George Hendrey, Xiang Zhao   +5 more
openaire   +2 more sources

Faster growing and more functionally diverse: global change alters functional trait composition of mountain plant communities in the European Alps

Ecography, EarlyView.
Understanding how global change reshapes mountain plant communities is essential for predicting biodiversity and ecosystem function in a warming world. Using resurvey data from over 1400 non‐forest vegetation plots across the European Alps, we show that community‐weighted means of key functional traits capturing important dimensions of plant ecological
Sergey Rosbakh, Sabine B. Rumpf, Stefan Dullinger   +2 more
wiley   +1 more source

Performance evaluation and improvement of ICESat-2 and GEDI forest canopy height retrievals in Northeast China

GIScience & Remote Sensing
The advent of new-generation spaceborne Light Detection and Ranging (lidar) systems, exemplified by the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) and Global Ecosystem Dynamics Investigation (GEDI), has opened up an unprecedented opportunity ...
Cancan Yang, Daoli Peng, Nan Zhang, Mingjie Chen, Weisheng Zeng, Xiangnan Sun, Longwei Li, Weitao Li   +7 more
doaj   +1 more source

Accuracy Assessment of GEDI Terrain Elevation and Canopy Height Estimates in European Temperate Forests: Influence of Environmental and Acquisition Parameters

Remote Sensing, 2020
Lidar remote sensing has proven to be a powerful tool for estimating ground elevation, canopy height, and additional vegetation parameters, which in turn are valuable information for the investigation of ecosystems.
Markus Adam, Mikhail Urbazaev, Clémence Dubois, Christiane Schmullius   +3 more
doaj   +1 more source

Global analysis suggests nitrogen deposition as an underestimated driver of vegetation greening

Ecography, EarlyView.
The local effects of atmospheric nitrogen deposition on plants are well established, yet a global empirical analysis of nitrogen deposition effects on vegetation dynamics is missing. Here, we assess how nitrogen deposition, alongside other global change drivers such as fire, and changes in temperature, precipitation and human land use, is related to ...
Jonas Trepel, Joe Atkinson, Oliver Baines, Matthew Kerr, Elizabeth le Roux, Hannah Rubin, Jens‐Christian Svenning, Robert Buitenwerf   +7 more
wiley   +1 more source

Wall‐to‐wall Amazon forest height mapping with Planet NICFI, Aerial LiDAR, and a U‐Net regression model

Remote Sensing in Ecology and Conservation
Tree canopy height is a key indicator of forest biomass, productivity and structure, yet measuring it accurately at regional or larger scales, whether from the ground or remotely, remains challenging.
Fabien H. Wagner, Ricardo Dalagnol, Griffin Carter, Mayumi C. M. Hirye, Shivraj Gill, Le Bienfaiteur Sagang Takougoum, Samuel Favrichon, Michael Keller, Jean P. H. B. Ometto, Lorena Alves, Cynthia Creze, Stephanie P. George‐Chacon, Shuang Li, Zhihua Liu, Adugna Mullissa, Yan Yang, Erone G. Santos, Sarah R. Worden, Martin Brandt, Philippe Ciais, Stephen C. Hagen, Sassan Saatchi   +21 more
doaj   +1 more source

Tracking Southern China’s Forest Growth from Space

Journal of Remote Sensing
Forest canopy height reflects the vertical structure of forests and gives indications on the growth capacity of trees and the level of forest biomass.
Jingyi Chang, Xiaowei Tong, Martin Brandt, Wenmin Zhang, Yuemin Yue, Jun Lu, Siyu Liu, Lu Zhai, Kelin Wang   +8 more
doaj   +1 more source