Results 121 to 130 of about 10,515 (155)

Drivers of aboveground biomass of high mountain vegetation in the Andes

Acta Oecologica, 2020
The biomass of plant communities in the high mountains of the Andes (páramo) is a key factor controlling the carbon retention and freshwater supply, which are important environmental services for the human population. Using d-sep tests, we examined four causal path models that show how the aboveground biomass of a series of small plots in undisturbed ...
Marian Cabrera, Joost F. Duivenvoorden
openaire   +3 more sources

Importance of structural and spectral parameters in modelling the aboveground carbon stock of urban vegetation

International Journal of Applied Earth Observation and Geoinformation, 2019
Abstract This study aims to comparatively assess the effectiveness of spectral and structural parameters of vegetation in estimating aboveground carbon (AGC) stock by vegetation type. A total of 38 structural metrics (including 21 percentiles) derived from LiDAR data, and 105 spectral indices and reflectance (including 10 percentiles for each of them)
Jay Gao
exaly   +2 more sources

Statewide mapping and estimation of vegetation aboveground biomass using airborne lidar

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
Airborne lidar has emerged as the most powerful remote sensing technology for mapping vegetation structure, but its application has been limited to landscape level due to the sheer data volume and daunting demand for computation. This study is to break this stereotype and conduct a statewide mapping study of aboveground biomass (AGB) by integrating ...
Qi Chen 0003, Ronald E. McRoberts
openaire   +1 more source

A study on estimation of aboveground wet biomass based on the microwave vegetation indices

2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
Vegetation biomass is an important parameter in the carbon cycle study. In this paper, a new technique to estimate aboveground vegetation wet biomass based on the Microwave Vegetation Indices (MVIs), which are computed through the observed brightness temperature of AMSR-E/Aqua under two adjacent frequencies, has been developed.
Linna Chai, Jiancheng Shi 0001, Jinyang Du, Jing Tao, Thomas J. Jackson, Peggy O'Neill, Lixin Zhang 0001, Ying Qu, J. D. Wang   +8 more
openaire   +1 more source

Smos L-Band Vegetation Optical Depth is Highly Sensitive to Aboveground Biomass

IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
The vegetation optical depth (VOD) measured at microwave frequencies is related to the vegetation water content and provides information complementary to visible/infra-red vegetation indices. This study is devoted to the characterisation of a new L-Band (1.4 GHz) VOD dataset (SMOS-IC L-VOD) obtained from the SMOS (Soil Moisture and Ocean Salinity ...
Nemesio J. Rodríguez-Fernández, Arnaud Mialon, Stéphane Mérmoz, Alexandre Bouvet, Philippe Richaume, Ahmad Al Bitar, Amen Al-Yaari, Martin Brandt, Thomas Kaminski, Thuy Le Toan, Yann H. Kerr, Jean-Pierre Wigneron   +11 more
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Biomass of Grazed, Burned, and Undisturbed Páramo Grasslands, Colombia. I. Aboveground Vegetation

Arctic and Alpine Research, 1995
Estimations of the amount of aboveground vegetation mass were made for four piramo grassland sites with different grazing management and burning histories in the Central Cordillera of Colombia. The total mass of live plus dead grassland vegetation showed a decrease from 2820 ? 190 g m-2 at the undisturbed to 868 + 73 g m-2 at the intensively grazed and
Hofstede, R.G.M., Mondragon Castillo, M. X., Rocha Osorio, C.M.   +2 more
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Effects of Interannual Climate Variation on Aboveground Phytomass in Alpine Vegetation

Ecology, 1994
Relationships between peak annual vascular aboveground phytomass and annual climate variation in alpine plant communities located on Niwot Ridge, Colorado, were analyzed using path analysis. The five community types, fellfield, dry meadow, moist meadow, wet meadow, and snowbed, represent a snow depth—soil moisture gradient and broadly represent the ...
Marilyn D. Walker, Patrick J. Webber, Elizabeth H. Arnold, Diane Ebert-May   +3 more
openaire   +1 more source

Shortwave infrared vegetation index-based modelling for aboveground vegetation biomass assessment in the arid steppes of Algeria

African Journal of Range & Forage Science, 2021
Selecting the appropriate vegetation index for accurate biomass estimation is a prerequisite before and during the ecosystem management project. This study, aims to compare Vegetation Indices (VIs) that are combining both Visible and Near Infrared OLI bands (VNIR-VIs), Visible and Short Wave Infrared OLI bands and also NIR and Short Wave Infrared OLI ...
Louaï Benseghir, Nour El Islam Bachari
openaire   +2 more sources

Functional trait diversity and aboveground biomass of herbaceous vegetation in temperate forests of Kashmir Himalaya

Environmental Monitoring and Assessment, 2023
Studying functional trait diversity can provide crucial clues about the adaptive survival strategies of regional plant species pool. Despite large-scale trait datasets available worldwide, the plant trait data from many biodiversity hotpot regions, like the Himalaya is still scarce. In this study, we aimed to investigate the plant functional traits and
Tajamul, Islam, Maroof, Hamid, Anzar Ahmad, Khuroo, Irshad A, Nawchoo   +3 more
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Accuracy and bias on the estimation of aboveground biomass in the woody vegetation of the Sonoran Desert

Botany, 2011
We developed allometric regressions for predicting aboveground biomass (AGB) in the Sonoran Desert. Information on canopy cover and height was collected and used to predict AGB from plant dimensions in twenty 25 m2plots that were also fully harvested. The comparison of these two methods showed that allometric equations without correction for bias led ...
Alberto Búrquez, Angelina Martínez-Yrízar   +1 more
openaire   +1 more source