Výsledky vyhledávání - "Ralph O Dubayah"

Akademický článek

Physical structure and biological composition of canopies in tropical secondary and old-growth forests.

Autor: David B Clark, Steven F Oberbauer, Deborah A Clark, Michael G Ryan, Ralph O Dubayah

Publikováno v: PLoS ONE, Vol 16, Iss 8, p e0256571 (2021)

The area of tropical secondary forests is increasing rapidly, but data on the physical and biological structure of the canopies of these forests are limited. To obtain such data and to measure the ontogeny of canopy structure during tropical rainfore

Externí odkaz: https://doaj.org/article/e79bd246cc1143dc99b529a4f8ee50f4

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Akademický článek

Context and future directions for integrating forest carbon into sub-national climate mitigation planning in the RGGI region of the U.S.

Publikováno v: Environmental Research Letters, Vol 16, Iss 6, p 063001 (2021)

International frameworks for climate mitigation that build from national actions have been developed under the United National Framework Convention on Climate Change and advanced most recently through the Paris Climate Agreement. In parallel, sub-nat

Externí odkaz: https://doaj.org/article/05a4b1d4d03f462caf9103187d84ae22

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Akademický článek

Geospatial assessment of the economic opportunity for reforestation in Maryland, USA

Autor: Rachel L Lamb, Lei Ma, Ritvik Sahajpal, Jae Edmonds, Nathan E Hultman, Ralph O Dubayah, Jennifer Kennedy, George C Hurtt

Publikováno v: Environmental Research Letters, Vol 16, Iss 8, p 084012 (2021)

Afforestation and reforestation have the potential to provide effective climate mitigation through forest carbon sequestration. Strategic reforestation activities, which account for both carbon sequestration potential (CSP) and economic opportunity,

Externí odkaz: https://doaj.org/article/98e56291e93e4f19a7a4a487cd03bbea

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Akademický článek

Towards mapping the diversity of canopy structure from space with GEDI

Autor: Fabian D Schneider, António Ferraz, Steven Hancock, Laura I Duncanson, Ralph O Dubayah, Ryan P Pavlick, David S Schimel

Publikováno v: Environmental Research Letters, Vol 15, Iss 11, p 115006 (2020)

Plant biodiversity supports life on Earth and provides a range of important ecosystem services, but is under severe pressure by global change. Structural diversity plays a crucial role for carbon, water and energy cycles and animal habitats. However,

Externí odkaz: https://doaj.org/article/18a9ac5f145a41fdb0e3ec445eae880c

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Akademický článek

Statistical properties of hybrid estimators proposed for GEDI—NASA’s global ecosystem dynamics investigation

Autor: Paul L Patterson, Sean P Healey, Göran Ståhl, Svetlana Saarela, Sören Holm, Hans-Erik Andersen, Ralph O Dubayah, Laura Duncanson, Steven Hancock, John Armston, James R Kellner, Warren B Cohen, Zhiqiang Yang

Publikováno v: Environmental Research Letters, Vol 14, Iss 6, p 065007 (2019)

NASA’s Global Ecosystem Dynamics Investigation (GEDI) mission will collect waveform lidar data at a dense sample of ∼25 m footprints along ground tracks paralleling the orbit of the International Space Station (ISS). GEDI’s primary science deli

Externí odkaz: https://doaj.org/article/fd37f0441e60456d963c911ca1fc9cfd

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Akademický článek

Connecting spaceborne lidar with NFI networks: A method for improved estimation of forest structure and biomass

Autor: Paul B. May, Ralph O. Dubayah, Jamis M. Bruening, George C. Gaines, III

Publikováno v: International Journal of Applied Earth Observations and Geoinformation, Vol 129, Iss , Pp 103797- (2024)

Spaceborne lidar provides a unique opportunity to supplement the field plot measurements of national forest inventories (NFIs) by providing dense measurements of vertical canopy structure. For full waveform instruments such as the Global Ecosystem Dy

Externí odkaz: https://doaj.org/article/406d0bd0a6e24f2cb56ba1c0b382b850

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Akademický článek

Definition criteria determine the success of old-growth mapping

Autor: Jamis M. Bruening, Ralph O. Dubayah, Neil Pederson, Benjamin Poulter, Leonardo Calle

Publikováno v: Ecological Indicators, Vol 159, Iss , Pp 111709- (2024)

Old-growth forests have been widely studied for decades. The extreme diversity of old forest characteristics has inspired an equally diverse set of old-growth definitions, and makes mapping old-growth difficult across large areas and different forest

Externí odkaz: https://doaj.org/article/e410f66ae2084d77a3a956f86c107d8e

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