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Forests 2016, 7(10), 215; doi:10.3390/f7100215

Effects of Temporal and Interspecific Variation of Specific Leaf Area on Leaf Area Index Estimation of Temperate Broadleaved Forests in Korea

1
Department of Forest Resources, Kangwon National University, Chuncheon 200-701, Korea
2
Department of Forest Sciences, Seoul National University, Seoul 151-921, Korea
3
Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
4
Interdisciplinary Program in Agricultural and Forest Meteorology, Seoul National University, Seoul 151-744, Korea
5
National Center for AgroMeteorology, Seoul National University, Seoul 151-744, Korea
*
Authors to whom correspondence should be addressed.
Academic Editors: Robert G. Wagner and Timothy A. Martin
Received: 12 June 2016 / Revised: 8 September 2016 / Accepted: 21 September 2016 / Published: 28 September 2016
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Abstract

This study investigated the effects of interspecific and temporal variation of specific leaf area (SLA, cm2·g−1) on leaf area index (LAI) estimation for three deciduous broadleaved forests (Gwangneung (GN), Taehwa (TH), and Gariwang (GRW)) in Korea with varying ages and composition of tree species. In fall of 2014, fallen leaves were periodically collected using litter traps and classified by species. LAI was estimated by obtaining SLAs using four calculation methods (A: including both interspecific and temporal variation in SLA; B: species specific mean SLA; C: period-specific mean SLA; and D: overall mean), then multiplying the SLAs by the amount of leaves. SLA varied across different species in all plots, and SLAs of upper canopy species were less than those of lower canopy species. The LAIs calculated using method A, the reference method, were GN 6.09, TH 5.42, and GRW 4.33. LAIs calculated using method B showed a difference of up to 3% from the LAI of method A, but LAIs calculated using methods C and D were overestimated. Therefore, species specific SLA must be considered for precise LAI estimation for broadleaved forests that include multiple species. View Full-Text
Keywords: leaf area index; specific leaf area; temperate deciduous forest; litter trap; interspecific variation leaf area index; specific leaf area; temperate deciduous forest; litter trap; interspecific variation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kwon, B.; Kim, H.S.; Jeon, J.; Yi, M.J. Effects of Temporal and Interspecific Variation of Specific Leaf Area on Leaf Area Index Estimation of Temperate Broadleaved Forests in Korea. Forests 2016, 7, 215.

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