Results 201 to 210 of about 80,832 (264)

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Increase in plant productivity in the tundra in Sweden is not related to increasing presence of warm‐adapted vascular plant species

Ecography, EarlyView.
Over the past decades, Arctic and alpine biomes have warmed faster than the global average. Substantial vegetation changes have been reported as a response to this warming, including increased productivity and the spread of warm‐adapted (thermophilic) species that are less resistant to grazing pressure into higher latitudes and altitudes.
Tim Horstkotte, Jakob Assmann, Henrik Hedenås, Signe Normand, Johan Olofsson   +4 more
wiley   +1 more source

Stochastic and deterministic processes influencing mountain mire diatom communities across spatial scales

Ecography, EarlyView.
Understanding how deterministic and stochastic processes influence the shape of microorganism community assembly across different spatial scales is essential for disentangling biodiversity patterns. Mires are nutrient‐poor and heterogeneous wetlands that form isolated habitats supporting highly diverse diatom assemblages, particularly in mountainous ...
Fernanda Gonzalez‐ Saldias, Angel Rain‐ Franco, Joan Gomà, Jorge García‐ Girón, Aaron Pérez‐ Haase   +4 more
wiley   +1 more source

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

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Simulation of vegetation cover on sidewalks in Denmark

Pest Management Science, 2004
Abstract Data from five 3‐year experiments comparing different strategies of non‐chemical weed control were analysed in order to set up a model that could be used for simulating further strategies. The treatments included different frequencies and effects of weed control using flaming, steaming and weed brushing.
Kristensen, K., Hansen, P. K., Kristoffersen, P.   +2 more
openaire   +2 more sources

Transformed difference vegetation index (TDVI) for vegetation cover mapping

IEEE International Geoscience and Remote Sensing Symposium, 2003
In this study, we present a new vegetation index, the TDVI: transformed difference vegetation index. This index shows the same sensitivity as the soil adjusted vegetation index (SAVI) to the optical proprieties of bare soil subjacent to the cover. It does not saturate like NDVI and SAVI and it shows an excellent linearity as a function of the rate of ...
Abderrazak Bannari, H. Asalhi, Philippe M. Teillet   +2 more
openaire   +1 more source

Vegetation cover of the Shantar Islands

Geography and Natural Resources, 2012
We consider the compositional and structural regularities of the vegetation cover on the islands of the Shantar Archipelago and analyze the present state of vegetation.
S. D. Shlotgauer, M. V. Kryukova
openaire   +1 more source

Vegetation and Land Cover

2018
Four main factors, namely climatic situation, phytogeographical regions, varied topography , and the impact of human activity are considered responsible for the changes in distribution and character of the natural vegetation. The extensive Iranian plateau displays quite a variation in such a way that 167 families of vascular plants and 1215 genera ...
Ali Farzaneh, Morteza Ebrahimi Rastaghi
openaire   +1 more source

Relationships between percent vegetation cover and vegetation indices

International Journal of Remote Sensing, 1998
In this paper, percent vegetation cover is estimated from vegetation indices using simulated Advanced Very High Resolution Radiometer (AVHRR) data derived from in situ spectral reflectance data. Spectral reflectance measurements were conducted on grasslands in Mongolia and Japan.
TS. Purevdorj, R. Tateishi, T. Ishiyama, Y. Honda   +3 more
openaire   +1 more source

Vegetation cover and occurrence of salamanders in the western Mediterranean

Integrative Zoology, 2021
AbstractThe Mediterranean region possesses a rich diversity of salamanders, which also exhibit a high degree of ecological diversification. It is assumed that the presence of salamanders is dependent on the level of vegetation cover in terrestrial habitats, but the strength of this association is likely to vary among species.
Daniel, Escoriza, Axel, Hernandez
openaire   +2 more sources