Establishment of seed zones based on native plant species

Kim, C. Y., Kim, W. M., Song, W. K., Choi, J. Y.

Establishment of seed zones based on native plant species

Autores

Kim, C. Y., Kim, W. M., Song, W. K., Choi, J. Y.

Editor

FAO ;

Descripción

Since forest ecosystems constitute a complex ecosystem, the health of the ecosystem must be maintained. Seed zones are areas of relative climatic similarity, and movement of seeds within them should help minimize maladaptation. This study intends to build Korean seed zones by applying the US seed zone construction method.In the United States, winter minimum temperature and annual heat: moisture index (AH:M; aridity) were used to construct seed zones. Climate data for the entire Korean Peninsula was provided by Worldclim. Winter minimum temperature was determined as the minimum value per cell from December through February and was classified into 5°F (2.2°C) bands ranging from <-15° to >35°F (-26.1 to 1.6°C). The AH:M data is average temperature (°C) plus 15°C (to obtain positive values) divided by precipitation in meters. The AH:M map was divided into six discrete classes (<–16, 16–19, 19–21, 21–24, 24–27, >27). Korean provisional seed zones of 65 climatic zones were formed by overlapping both maps. Five native plant species were selected to test correspondence with the provisional seed zones. For Pine(Pinus Densiflora), Oak(Quercus acutissima), Oyster oak(Quercus variabilis), the winter minimum temperature of 15– 20°F and the AH:M of 19–21 and 21–24°C/m accounted for 37%, 43%, and 34%, respectively. Due to the latent habitat area of fern wood(Acer pictum subsp. mono), the Maxent AUC was 0.844, showing a high fit. The winter minimum temperature of 20–25°F and AH:M of 16–19°C/m accounted for 42%. Due to the latent habitat of hornbeam(Carpinus tschonoskii), Maxent AUC was 0.930, showing high accuracy. The winter minimum temperature of 25–30°F and AH:M of <16°C/m occupied 33%. In this study, provisional Korean seed zones were established and their association with five native plant species was identified. This study will be used to define initial seed zones and identify seed zones inhabiting similar climatic zones. Keywords: Provisional seed zones; Climate variables; Ecosystem; MaxEnt; Korean Peninsula ID: 3623161