Effects of Silvicultural Intensity on Stand Productivity and Dynamics

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Ecology and Management".

Deadline for manuscript submissions: closed (20 May 2020) | Viewed by 2466

Special Issue Editor


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Guest Editor
Department of Forestry & Natural Resources, Purdue University, West Lafayette, IN, USA
Interests: forest sustainability; forest regeneration following harvesting; silvicultural practices; ecological effects of forest management practices in the Acadian forest

Special Issue Information

Dear Colleagues,

Decisions about the appropriate level of silvicultural intensity (including choice of harvest method, tree species composition, artificial regeneration, site preparation, vegetation management, insect pest management, fertilization, and thinning) have been at the core of forestry debates around the world during the past half-century.

Forest managers and landowners facing difficult regeneration decisions following catastrophic fires, wind events, insect outbreaks, and droughts constantly face this challenge. Those trying to achieve forest conservation and restoration goals, especially those working in sensitive forest ecosystems or areas of high public concern, face the same challenge in determining the best silvicultural approaches for solving difficult problems. Forests plagued by widespread invasive plant and insect damage continue to build while forest managers debate over the level of silvicultural intervention needed to mitigate the situation. Beyond the technical silvicultural challenges, public perceptions about forestry practices and the substantial financial investments often involved create social and economic pressures that further complicate any discussions and decisions.

We invite papers for a Special Issue of Forests that address comparisons of levels of silvicultural intensity related to important forest management problems. Submissions may include technical studies and review papers addressing the topic of silvicultural intensity. Papers addressing choice of harvest level, tree species choice, use of natural vs. artificial regeneration, various types and levels of site preparation, vegetation and insect pest management methods, levels and kinds of fertilization, and levels of precommercial or commercial thinning are of particular interest. Papers addressing public perceptions of forestry methods or economic analyses of different levels of forest intervention are also welcome.

Prof. Dr. Robert G Wagner
Guest Editor

Manuscript Submission Information

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Keywords

  • Silviculture
  • Regeneration
  • Restoration
  • Forestry
  • Management intensity

Published Papers (1 paper)

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Research

15 pages, 1260 KiB  
Article
Multidecadal Growth of Western White Pine and Interior Douglas-Fir Following Site Preparation
by Jonathan R. Cherico, Andrew S. Nelson, Teresa B. Jain and Russell T. Graham
Forests 2020, 11(5), 509; https://doi.org/10.3390/f11050509 - 1 May 2020
Cited by 3 | Viewed by 2276
Abstract
Site preparation is used to favor seedling regeneration and establishment by enhancing growing conditions and increasing resource availability, yet few studies have compared different site preparation techniques on growth and yield of trees over multiple decades. We destructively sampled 34-year old trees of [...] Read more.
Site preparation is used to favor seedling regeneration and establishment by enhancing growing conditions and increasing resource availability, yet few studies have compared different site preparation techniques on growth and yield of trees over multiple decades. We destructively sampled 34-year old trees of western white pine (Pinus monticola Douglas ex D. Don) and Interior Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. glauca (Beissn.) Franco planted at two sites using a replicated experiment to test the effectiveness of different site preparation treatments: (1) no site preparation, (2) scalping, (3) bedding, and (4) bedding plus three years of competition control with herbicide. Growth and yield were compared among the treatments, and models of growth were developed for each species and treatment combination. The herbicide treatment was the only treatment that consistently improved growth and yield of both species resulting in 19%–30% gains in height, 43%–63% gains in diameter, and 31%–109% gains in stem volume by age 34. Height growth response to herbicide was sustained until age 14 for white pine and age 12 for Douglas-fir, while the diameter response was sustained until age 23 for white pine and 20 for Douglas-fir. The later peak in growth for white pine suggests a better response to treatment and that the species was able to maintain higher growth following crown closure. Both species exhibited a Type 2 growth response to herbicide, suggesting competition control resulted in sustained gains over time with associated age shifts of 8.5 and 9.7 years for white pine and 7.1 and 10.2 years for Douglas-fir, height and diameter, respectively. This compares to scalping and bedding which produced no detectable difference in growth compared to the control, and in some instances, reduced growth. In the Northern Rocky Mountains, moisture is most limiting. This is likely why trees showed the greatest response to competition control. Interestingly, this growth was sustained well beyond seedling establishment. Full article
(This article belongs to the Special Issue Effects of Silvicultural Intensity on Stand Productivity and Dynamics)
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