KOMPOSISI DAN STRUKTUR RERUMPUTAN DI KAWASAN DANAU TOBA DESA HARANGGAOL KECAMATAN HARANGGAOL HORISON KABUPATEN SIMALUNGUN SUMATERA UTARA
Abstract: The composition
and structure of
Grasses in Haranggaol
Village Haranggaol Horison
Subdistrict Simalungun
Regency North Sumatra
has been studied
from April to
July 2012. The
objective of the
study was to determine the composition and structure of grasses at
different altitudes. Sampling area was defined by purposive sampling
method and divided into three locations
based on altitude with 20 plots of 1 x 1
m size for each area. From the study it was found 24 species of grasses that
belong to two families. The first location
was dominated by
Microstegium ciliatum (81.095%),
the second was
dominated by Deyeuxia brachyathera (68.504%) and the third
was dominated by Leersia hexandra (79.158%).
The diversity index (H') of grasses are
1.557, 1.790 and 1.414 in the location I, II and III, respectively and
equitability index (E) of grasses are 0.607, 0.661, 0.726 in the location I, II
and III, respectively. The similarity index ranges from 30 to 50%, with the
highest similarity index is 50% that was found between location I and II.
Keyword:
composition, grass, Haranggaol, structure
Penulis: Novia
Wulandari Tarigan, M. Zaidun Sofyan, Nursahara Pasaribu
Kode
Jurnal: jpbiologidd130014
