Abstract

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 Forests Special Issue titled Short Rotation Woody Crop Production Systems for Ecosystem Services and Phytotechnologies we explore the broad range of international current research dedicated to our topic. The issue can be found online at https://www.mdpi.com/journal/forests/special issues/woody crop production. There are a total of 18 papers in this book, reprinted from the online Special Issue.

Highlights

  • Heterosis, or hybrid vigour, refers to the phenomenon in which hybrids outperform their parents in yield, biomass, biotic and abiotic stress tolerance, or other traits [1]

  • Following contemporary worldwide trends in research and practice related to poplars and willows, which are collaborations since the early 2000s with colleagues from the Faculty of Sciences-Department of Biology and Ecology at the University of Novi Sad have focused on the investigation of phytoremediation potential of poplar and willow clones from the Institute’s genepool

  • Our analysis considered the attractiveness of planting Short Rotation Coppice (SRC) willow (Salix spp.) plantations on agricultural land, public funds spent for short-term interventions against ragweed, and costs to the local economy

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Summary

Introduction

Hybrid vigour, refers to the phenomenon in which hybrids outperform their parents in yield, biomass, biotic and abiotic stress tolerance, or other traits [1]. GreenWood Resources managed large-scale hybrid poplar (Populus spp.) farms ranging in size from 20 to 38 ha in Idaho, Oregon, California, and Washington, USA to demonstrate biomass yields, production costs, and harvesting technology in growing renewable feedstocks under the Advanced Hardwood Biofuel Northwest project (AHB). Material and Methods: A factorial experiment of propagation method and hybrid variety was conducted to quantify the scale-up rate of in vitro and greenhouse clonal multiplication These data were used in modeling the internal rate of return (IRR) on investment into rapid propagation as a function of genetic gains in biomass yield and quality and compared to a base case that assumed the standard method of supplying operational varieties in commercial quantities from nurseries as hardwood cuttings, capable of yields of 16.5 Mg ha−1 year−1. The Populus deltoides × P. maximowiczii and the Populus trichocarpa × P. maximowiczii varieties greatly exceeded the multiplication rate of the

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