ORIGINAL RESEARCH article
Front. For. Glob. Change
Sec. Forest Disturbance
Long-Term Tree Mortality Prediction Following Stem Breakage in Loblolly Pine (Pinus taeda L.) Plantations: Implications for Management in the Southeastern United States
Provisionally accepted
- 1Oklahoma State University, Stillwater, United States
- 2Mokpo National University, Muan-gun, Republic of Korea
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Loblolly pine (Pinus taeda L.) plantations in the Southeastern United States (U.S.) are increasingly vulnerable to climate-driven disturbances that cause stem breakage and elevate tree mortality. Therefore, it is imperative to develop adaptative management strategies following stem breakage for forest managers and landowners to mitigate tree mortality and sustain forest productivity. However, predictive frameworks for post‐breakage mortality remain underdeveloped, hampering adaptive management. We conducted a split‐plot experiment in four mid‐rotation plantations, applying two whole‐plot silvicultural treatments (no thinning vs. thinning) and five subplot treatments defined by the proportion of trees damaged (PTD: 0, 25, 50, 75, 100 %). Stem breakage was simulated by rifle shooting of main stems, and individual trees were monitored for 12 years. We developed a multiple logistic regression model, including thinning, plot‐level damage (PTD), tree‐level damage severity (PSD), diameter at breast height (DBH), total height (HT), and crown height (CRNHT), and used parametric bootstrapping (10,000 iterations) to quantify uncertainty. Our findings highlight: 1) Short‐term mortality (<4 years) remained low but increased sharply over the long-term following stem breakage; 2) Larger DBH and greater tree height reduced mortality risk; 3) Plot‐level damage proportion had a stronger influence on mortality than individual‐tree damage severity. These results highlight the dominant role of plot‐level damage regimes and tree size in long‐term survival after the stem breakage. Incorporating these insights into adaptive thinning and disturbance management will help sustain productivity and resilience in loblolly pine plantations under escalating climate extremes.
Keywords: Tree damage, loblolly pine, tree mortality, Climate Change, forest management
Received: 18 Sep 2025; Accepted: 18 Nov 2025.
Copyright: © 2025 Hwang and Kang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Wonseok Kang, wskang@mnu.ac.kr
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