Journal
FORESTS
Volume 7, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/f7100215
Keywords
leaf area index; specific leaf area; temperate deciduous forest; litter trap; interspecific variation
Categories
Funding
- Korea Forest Service [S111212L20110, S21134L020120]
- Kangwon National University [C1010707-01-01]
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This study investigated the effects of interspecific and temporal variation of specific leaf area (SLA, cm(2).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.
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