Results 61 to 70 of about 224,955 (211)

Interception of the Fukushima reactor accident-derived137Cs, 134Cs and 131I by coniferous forest canopies [PDF]

, 2012
The Fukushima Daiichi nuclear power plant accident resulted in extensive radioactive contamination of the surrounding forests. In this study, we analyzed fallout 137Cs, 134Cs, and 131I in rainwater, throughfall, and stemflow in coniferous forest ...
Gomi Takashi, Kato Hiroaki, Onda Yuichi, 恩田 裕一   +3 more
core   +1 more source

UPSCALING OF SOLAR INDUCED CHLOROPHYLL FLUORESCENCE FROM LEAF TO CANOPY USING THE DART MODEL AND A REALISTIC 3D FOREST SCENE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Solar induced chlorophyll a fluorescence (SIF) has been shown to be an excellent proxy of photosynthesis at multiple scales. However, the mechanical linkages between fluorescence and photosynthesis at the leaf level cannot be directly applied at canopy ...
W. Liu, W. Liu, W. Liu, J. Atherton, M. Mõttus, A. MacArthur, H. Teemu, K. Maseyk, I. Robinson, E. Honkavaara, A. Porcar-Castell   +10 more
doaj   +1 more source

Vegetation hot spot signatures from synergy of DSCOVR EPIC, Terra MISR, MODIS and geostationary sensors [PDF]

, 2019
It has been widely recognized that the hotspot region in Bidirectional Reflectance Factors (BRF) of vegetated surfaces represents the most information-rich directions in the directional distribution of canopy reflected radiation.
Knjazihhin, Juri, Myneni, Ranga B., She, Xiaojun   +2 more
core  

Detecting Long-Term Urban Forest Cover Change and Impacts of Natural Disasters Using High-Resolution Aerial Images and LiDAR Data

Remote Sensing, 2020
Urban forests provide ecosystem services; tree canopy cover is the basic quantification of ecosystem services. Ground assessment of the urban forest is limited; with continued refinement, remote sensing can become an essential tool for analyzing the ...
Raoul Blackman, Fei Yuan
doaj   +1 more source

Net below canopy fluxes in Canarian laurel forest canopies

Journal of Hydrology, 2002
Bulk precipitation, stemflow and throughfall were collected in a Canarian laurel forest (North Tenerife), and chemically analysed to determine the net below canopy fluxes. Annual negative fluxes were found for H þ ,N O 3 ,S O 4 and Cl 2 and annual positive fluxes for Ca 2þ ,M g 2þ ,K þ ,N a þ , HCO3 ,P O 42 and DOC.
Jesús R. Aboal, M.Soledad Jiménez, Domingo Morales, José M. Hernández   +3 more
openaire   +1 more source

Die Baumkronenspinnen (Araneae) des Leipziger Auwaldes [PDF]

, 2012
The canopy spiders of the floodplain forest in Leipzig have become a focus of ecological studies in recent years. In 2006 we sampled 30 tree canopies in the ‘Burgaue’ nature reserve with pyrethrum knock-down fogging, recording 502 adult spiders belonging
Floren, Andreas, Otto, Stefan
core  

Canopy Height Estimation Using Sentinel Series Images through Machine Learning Models in a Mangrove Forest

Remote Sensing, 2020
Canopy height serves as a good indicator of forest carbon content. Remote sensing-based direct estimations of canopy height are usually based on Light Detection and Ranging (LiDAR) or Synthetic Aperture Radar (SAR) interferometric data.
Sujit Madhab Ghosh, Mukunda Dev Behera, Somnath Paramanik   +2 more
doaj   +1 more source

Impact of landuse change on ecohydrological function of canopy in Brant`s oak (Quercus brantii Lindl.) forest in Ghale-gol watershed, Lorestan [PDF]

تحقیقات جنگل و صنوبر ایران, 2016
Ecohydrological functions of canopy are significantly influenced by landuse change. This study was conducted across four current landuse types within the Gale-gol watershed (Khorramabad, Lorestan), including semi-natural forest, disturbed forest, forest ...
somayeh Ghorbani, Mohammad Hojjati, khosro Sagheb Talebi, Sha'ban Shataee   +3 more
doaj   +1 more source

Forest disturbance and recovery: A general review in the context of spaceborne remote sensing of impacts on aboveground biomass and canopy structure [PDF]

, 2009
Abrupt forest disturbances generating gaps \u3e0.001 km2 impact roughly 0.4–0.7 million km2a−1. Fire, windstorms, logging, and shifting cultivation are dominant disturbances; minor contributors are land conversion, flooding, landslides, and avalanches ...
Chambers, Jeffrey Q, Clark, D B, Frolking, Steve, Hurtt, George C, Palace, Michael W, Shugart, H H   +5 more
core   +3 more sources

An approach to detect and map forest canopy layers in Swiss mountain forests using nationwide airborne laser scanning data

International Journal of Applied Earth Observations and Geoinformation
Understanding vertical forest structure is essential for forest management and is strongly linked to ecosystem functioning. In countries with protective forests, sustainable management is key to protecting humans and infrastructure from natural hazards ...
Alexander Bast, Martina L. Hobi, Christian Ginzler, Livia Piermattei, Christoph Fischer, Petia S. Nikolova, Leon J. Bührle, Tobias Kalt, Frank Graf   +8 more
doaj   +1 more source