Comparing Algorithms for Estimating Foliar Biomass of Conifers in the Pacific Northwest

Comparing Algorithms for Estimating Foliar Biomass of Conifers in the Pacific Northwest PDF Author: Crystal Lynn Raymond
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 36

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Book Description
Accurate estimates of foliar biomass (FB) are important for quantifying carbon storage in forest ecosystems, but FB is not always reported in regional or national inventories. Foliar biomass also drives key ecological processes in ecosystem models. Published algorithms for estimating FB in conifer species of the Pacific Northwest can yield signifi cantly different results, but have not been rigorously compared for species other than Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). We compared five algorithms for estimating FB for seven common coniferous species in the Pacific Northwest. Algorithms based on diameter at breast height (DBH), or on DBH and height, consistently yield higher estimates of FB than algorithms based on sapwood area. At the tree level, differences between algorithms increased with increasing DBH for all species, but their order and magnitude differed by species. At the stand level, differences among algorithms were muted by the mix of species and diameter classes that contributed to total FB of stands of different seral stages and species composition. Significant differences among estimates of FB from different algorithms show the need for consistent methods for estimating FB for carbon accounting, tests of the sensitivity of ecosystem models to these differences, and more field observations to compare algorithms.

Comparing Algorithms for Estimating Foliar Biomass of Conifers in the Pacific Northwest

Comparing Algorithms for Estimating Foliar Biomass of Conifers in the Pacific Northwest PDF Author: Crystal Lynn Raymond
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 36

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Book Description
Accurate estimates of foliar biomass (FB) are important for quantifying carbon storage in forest ecosystems, but FB is not always reported in regional or national inventories. Foliar biomass also drives key ecological processes in ecosystem models. Published algorithms for estimating FB in conifer species of the Pacific Northwest can yield signifi cantly different results, but have not been rigorously compared for species other than Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). We compared five algorithms for estimating FB for seven common coniferous species in the Pacific Northwest. Algorithms based on diameter at breast height (DBH), or on DBH and height, consistently yield higher estimates of FB than algorithms based on sapwood area. At the tree level, differences between algorithms increased with increasing DBH for all species, but their order and magnitude differed by species. At the stand level, differences among algorithms were muted by the mix of species and diameter classes that contributed to total FB of stands of different seral stages and species composition. Significant differences among estimates of FB from different algorithms show the need for consistent methods for estimating FB for carbon accounting, tests of the sensitivity of ecosystem models to these differences, and more field observations to compare algorithms.

Comparing algorithms for estimating foliar biomass of conifers in the Pacific Northwest

Comparing algorithms for estimating foliar biomass of conifers in the Pacific Northwest PDF Author: Crystal Lynn Raymond
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 23

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Book Description
Accurate estimates of foliar biomass (FB) are important for quantifying carbon storage in forest ecosystems, but FB is not always reported in regional or national inventories. Foliar biomass also drives key ecological processes in ecosystem models. Published algorithms for estimating FB in conifer species of the Pacific Northwest can yield signifi cantly different results, but have not been rigorously compared for species other than Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). We compared five algorithms for estimating FB for seven common coniferous species in the Pacific Northwest. Algorithms based on diameter at breast height (DBH), or on DBH and height, consistently yield higher estimates of FB than algorithms based on sapwood area. At the tree level, differences between algorithms increased with increasing DBH for all species, but their order and magnitude differed by species. At the stand level, differences among algorithms were muted by the mix of species and diameter classes that contributed to total FB of stands of different seral stages and species composition. Significant differences among estimates of FB from different algorithms show the need for consistent methods for estimating FB for carbon accounting, tests of the sensitivity of ecosystem models to these differences, and more field observations to compare algorithms.

Comparing algorithms for estimating foliar biomass of conifers in the Pacific Northwest

Comparing algorithms for estimating foliar biomass of conifers in the Pacific Northwest PDF Author: Crystal Lynn Raymond
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 23

Get Book Here

Book Description
Accurate estimates of foliar biomass (FB) are important for quantifying carbon storage in forest ecosystems, but FB is not always reported in regional or national inventories. Foliar biomass also drives key ecological processes in ecosystem models. Published algorithms for estimating FB in conifer species of the Pacific Northwest can yield signifi cantly different results, but have not been rigorously compared for species other than Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). We compared five algorithms for estimating FB for seven common coniferous species in the Pacific Northwest. Algorithms based on diameter at breast height (DBH), or on DBH and height, consistently yield higher estimates of FB than algorithms based on sapwood area. At the tree level, differences between algorithms increased with increasing DBH for all species, but their order and magnitude differed by species. At the stand level, differences among algorithms were muted by the mix of species and diameter classes that contributed to total FB of stands of different seral stages and species composition. Significant differences among estimates of FB from different algorithms show the need for consistent methods for estimating FB for carbon accounting, tests of the sensitivity of ecosystem models to these differences, and more field observations to compare algorithms.

Research Paper PNW.

Research Paper PNW. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 108

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Chicago's Urban Forest Ecosystem

Chicago's Urban Forest Ecosystem PDF Author: E. Gregory McPherson
Publisher:
ISBN:
Category : Energy conservation
Languages : en
Pages : 212

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572

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Valuing Chaparral

Valuing Chaparral PDF Author: Emma C. Underwood
Publisher: Springer
ISBN: 3319683039
Category : Technology & Engineering
Languages : en
Pages : 483

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Book Description
Chaparral shrubland ecosystems are an iconic feature of the California landscape, and a highly biodiverse yet highly flammable backdrop to some of the fastest growing urban areas in the United States. Chaparral-type ecosystems are a common element of all of the world’s Mediterranean-type climate regions – of which California is one – yet there is little public appreciation of the intrinsic value and the ecosystem services that these landscapes provide. Valuing Chaparral is a compendium of contributions from experts in chaparral ecology and management, with a focus on the human relationship with chaparral ecosystems. Chapters cover a wide variety of subjects, ranging from biodiversity to ecosystem services like water provision, erosion control, carbon sequestration and recreation; from the history of human interactions with chaparral to current education and conservation efforts; and from chaparral restoration and management to scenarios of the future under changing climate, land use, and human population. Valuing Chaparral will be of interest to resource managers, the research community, policy makers, and the public who live and work in the chaparral dominated landscapes of California and other Mediterranean-type climate regions.

Canadian Journal of Forest Research

Canadian Journal of Forest Research PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 490

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Remote Sensing of Natural Resources

Remote Sensing of Natural Resources PDF Author: Guangxing Wang
Publisher: CRC Press
ISBN: 1466556935
Category : Nature
Languages : en
Pages : 565

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Book Description
Highlighting new technologies, Remote Sensing of Natural Resources explores advanced remote sensing systems and algorithms for image processing, enhancement, feature extraction, data fusion, image classification, image-based modeling, image-based sampling design, map accuracy assessment and quality control. It also discusses their applications for

Estimating Live Fuels for Shrubs and Herbs with BIOPAK

Estimating Live Fuels for Shrubs and Herbs with BIOPAK PDF Author:
Publisher:
ISBN:
Category : Plant biomass
Languages : en
Pages : 28

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Book Description