Table · dataset · 2026
<b>A 25-year canopy-release experiment reveals persistent, intensity-dependent recovery of Korean pine</b>
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<p dir="ltr">Restoring Korean pine (<i>Pinus koraiensis</i>) in secondary broadleaved forests is constrained by prolonged canopy suppression, yet the long-term growth response of established trees to canopy release remains unclear.
Description
We analysed a replicated 25-year canopy-release experiment in northeastern China in which plots containing established Korean pine beneath a secondary broadleaved canopy were assigned to five levels of retained canopy closure, ranging from 80% closure to complete overstorey removal.
Release generated persistent and intensity-dependent growth gains. After 25 years, Korean pine basal area under complete release was approximately 4.4 times that under the closed-canopy treatment, and the strongest release treatments maintained higher annual basal-area increments across all three post-treatment stages. Structural equation models showed that the growth response covaried with photosynthesis and soil nitrogen–phosphorus balance; after these variables were included, canopy closure had no detectable direct association with annual increment.
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Plot-level bootstrapping showed that complete release advanced attainment of the closed-canopy basal-area benchmark by 18.0 years (95% confidence interval, 16.3-19.7 years), and alternative cumulative-growth and growth-rate benchmarks yielded a broadly similar ordering of treatments. Taken together, these findings show that strong canopy release can redirect the long-term growth trajectory of established Korean pine and advance a measurable phase of recovery of the late-successional conifer component by nearly two decades.</p>
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- DOI doi.org/10.6084/m9.figshare.33724567.v1 ↗
DOI / persistent id · from figshare com
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- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
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Topics
Provenance · 1 source records, 17 field assertions
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|---|---|---|---|
| figshare | oai:figshare.com:article/33724567 | 7 d ago | JSON v1 |
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