Is There a Need for Site Productivity Functions for Short-rotation Woody Crop Plantings?. PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 10
Book Description
For over a decade, researchers have used small-scale research plots to assist development and selection of high yielding, pest-resistant clones of fast-growing hardwoods such as hybrid poplar (Populus spp.). Substantial advances have been made in the techniques and criteria for screening species and selecting clones. Data from these research plots indicate that the ultimate performance of selected clones is dependent upon variable factors in the environment. Until now, researchers could only determine the suitability of a given site for such clones, not the actual yield potential of the site. Recently in the north central US, several clones were planted on larger-than-research-scale plots on private land recontracted under the Conservation Reserve Program (CRP). The historical database could not provide a framework which would allow producers to predict the yield potential of a particular clone on a specific site. Through a systematic combination of clonal trials on experimental research-scale plots and operational plantings on 50 to 100 acre agricultural-scale field plots, it may be possible to develop yield functions or site quality equations which would predict biomass yields at rotation for selected clones. Such estimates will (1) reduce the probability of planting failure, (2) allow maximum expression of the genetic potential of selected superior clones, and thus (3) facilitate accurate economic planning for both the producer and conversion facility manager.
Author: Publisher: ISBN: Category : Languages : en Pages : 10
Book Description
For over a decade, researchers have used small-scale research plots to assist development and selection of high yielding, pest-resistant clones of fast-growing hardwoods such as hybrid poplar (Populus spp.). Substantial advances have been made in the techniques and criteria for screening species and selecting clones. Data from these research plots indicate that the ultimate performance of selected clones is dependent upon variable factors in the environment. Until now, researchers could only determine the suitability of a given site for such clones, not the actual yield potential of the site. Recently in the north central US, several clones were planted on larger-than-research-scale plots on private land recontracted under the Conservation Reserve Program (CRP). The historical database could not provide a framework which would allow producers to predict the yield potential of a particular clone on a specific site. Through a systematic combination of clonal trials on experimental research-scale plots and operational plantings on 50 to 100 acre agricultural-scale field plots, it may be possible to develop yield functions or site quality equations which would predict biomass yields at rotation for selected clones. Such estimates will (1) reduce the probability of planting failure, (2) allow maximum expression of the genetic potential of selected superior clones, and thus (3) facilitate accurate economic planning for both the producer and conversion facility manager.
Author: Ronald S. Zalesny Jr. Publisher: MDPI ISBN: 3039215094 Category : Science Languages : en Pages : 316
Book Description
While international efforts in the development of short rotation woody crops (SRWCs) have historically focused on the production of biomass for bioenergy, biofuels, and bioproducts, research and deployment over the past decade has expanded to include broader objectives of achieving multiple ecosystem services. In particular, silvicultural prescriptions developed for SRWCs have been refined to include woody crop production systems for environmental benefits such as carbon sequestration, water quality and quantity, and soil health. In addition, current systems have been expanded beyond traditional fiber production to other environmental technologies that incorporate SRWCs as vital components for phytotechnologies, urban afforestation, ecological restoration, and mine reclamation. In this Special Issue of the journal Forests, we explore the broad range of current research dedicated to our topic: International Short Rotation Woody Crop Production Systems for Ecosystem Services and Phytotechnologies
Author: Mark Krawczyk Publisher: New Society Publishers ISBN: 1550927647 Category : Technology & Engineering Languages : en Pages : 610
Book Description
Cut and come again forestry – reviving the ancient practice of resprout silviculture to power local woodland-based economies. Coppice Agroforestry is a richly illustrated, comprehensive guide to resprout silviculture – managing trees and shrubs by coppicing, pollarding, shredding, and pleaching – for a continuous supply of small diameter polewood for products from firewood to fine furniture. Contextualizing resprout silviculture historically, ecologically, and economically, Coppice Agroforestry explores the potential of this ancient practice for modern times. Coverage includes: The cultural history of coppicing in Europe and North America Tree and shrub anatomy, biology, and woodland ecology A suite of woodland management systems Dozens of handcrafted wood products on a continuum of value, offering a wide range of business opportunities Case studies of diverse coppice-based enterprises Assessing existing forests for coppice potential Designing new resprout silviculture systems Tables highlighting diverse species for various uses A vision of a modern resprout silviculture renaissance. A decade in the making, encyclopedic in scope, and written by the hand of a woodsman, Coppice Agroforestry is a deep dive into this ancient practice, blending it with modern science, systems thinking, and tools to land it firmly into the 21st century. Whether you have a few trees or an entire forest, Coppice Agroforestry is the must-have practical guide for homesteaders, farmers, foresters, land managers, and educators who ally themselves with the remarkable resilience of woody plants.
Author: National Research Council Publisher: National Academies Press ISBN: 0309067790 Category : Science Languages : en Pages : 60
Book Description
The Office of Fuels Development (OFD), a component of the U.S. Department of Energy's (DOE) Office of Transportation Technologies, manages the federal government's effort to make biomass-based ethanol (bioethanol) and biodiesel a practical and affordable alternative to gasoline. Through the National Biomass Ethanol Program, the OFD is overseeing key research and development (R&D) and industry-government partnerships for the establishment of a cellulosic biomass ethanol industry. Cellulosic biomass resources being investigated include agronomic and forest crop residues, woody crops, perennial grasses, and municipal wastes. Starch-based sources, such as cereal grains (e.g., corn grain), are not included in this program. The objective of the program is to promote the commercialization of enzyme-based technologies to produce cost-competitive bioethanol for use as transportation fuel. The OFD requested that the National Research Council estimate the contribution and evaluate the role of biofuels (biomass-derived ethanol and biodiesel) as transportation fuels in the domestic and international economies, evaluate OFD's biofuels strategy, and recommend changes in this strategy and the R&D goals and portfolio of the OFD in the near-term to midterm time frame (about 20 years). During this period, a number of complex, interacting factors, including advances in the technologies used to produce biofuels at a competitive cost, the elimination of tax incentives, advances in vehicle and engine technologies, growing concerns about solid waste disposal and air pollution, and global measures to reduce emissions of greenhouse gases to the atmosphere, will affect the position of biofuels in transportation fuel markets.
Author: Calliope Panoutsou Publisher: Academic Press ISBN: 0128123044 Category : Technology & Engineering Languages : en Pages : 294
Book Description
Modeling and Optimization of Biomass Supply Chains: Top Down and Bottom Up Assessment for Agricultural, Forest and Waste Feedstock provides scientific evidence for assessing biomass supply and logistics, placing emphasis on methods, modeling capacities, large data collection, processing and storage. The information presented builds on recent relevant research work from the Biomass Futures, Biomass Policies and S2Biom projects. In addition to technical issues, the book covers the economic, social and environmental aspects with direct implications on biomass availability. Its chapters offer an overview of methodologies for assessing and modeling supply, biomass quality and requirements for different conversion processes, logistics and demand for biobased sectors. Case studies from the projects that inspire the book present practical examples of the implementation of these methodologies. The authors also compare methodologies for different regions, including Europe and the U.S. Biomass feedstock-specific chapters address the relevant elements for forest, agriculture, biowastes, post-consumer wood and non-food crops. Engineers in the bioenergy sector, as well as researchers and graduate students will find this book to be a very useful resource when working on optimization and modeling of biomass supply chains. For energy policymakers, analysts and consultants, the book provides consistent and technically sound projections for policy and market development decisions. Provides consistent ratios and indicators for assessing biomass supply and its logistical component Explores assumptions behind the assessment of different types of biomass, including key technical and non-technical factors Presents the existing modeling platforms, their input requirements and possible output projections
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Author: Ronald S. Zalesny Jr.
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Author: Charles Hobie Perry
Author: Mark Krawczyk
Author: National Research Council
Author: Calliope Panoutsou
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