| dc.description.abstract | Pine trees belonging to the Pinaceae family have a wide distribution from
the Northern to Southern hemispheres and include almost 120 species. Tropical
pine, known as Tusam, is the only type of pine that is distributed in Southeast Asia,
such as Thailand, Vietnam, Malaysia and Indonesia. Pines that grow natively in
Sumatra were first discovered by a German botanist, Dr. F. R. Junghuhn in the
Sipirok area in 1841, divided into three lines or strains, namely: Aceh, Kerinci,
and Tapanuli. This research was carried out with the aim of identifying the
morphology of pine (Pinus merkusii) found in the Protected Forest of
Parsingguran Village, Pollung District, Humbang Hasundutan Regency. This
research was conducted in one of the protected forest areas managed by a forest
farmer group with an area of 172 ha and consisting of 110 ha of pine stands and
60 ha of degraded land. This research uses the grid line method by creating plots
measuring 20 x 20 m which is a combination of the strip and double plot methods.
The sampling intensity used in this research was 5%. The determination of sample
plots was carried out deliberately (purposive sampling). In this study, 401 Aceh
strain pine trees and 233 Tapanuli strain pine trees were found. Based on
morphological analysis, the Aceh strain of pine has a rougher bark structure,
deeper grooves, longer leaves and shorter fruit than the Tapanuli strain of pine.
The Tapanuli strain of pine has a taller, slimmer and straighter trunk shape than
the Aceh strain of pine. The health condition of the pines in the Parsingguran
Protected Forest is in classes 2 and 3 which are categorized as unhealthy canopy
characteristics. | en_US |
