Analisis Vegetasi Tumbuhan Bawah di Hutan Gunung Sinabung Jalur Pendakian Sigarang-Garang Kabupaten Karo Sumatera Utara

Abstract

Vegetation Analysis Of Ground Cover Plants In The Lane Climbing Sigarang garang Of Sinabung Mountain Forest Karo Regency North Sumatera had been studied. For this study site was settled by purposive sampling with 20 plot of 1 x 1 m size for each location. There are 58 species of ground cover plants are recorded in the study site belonging to 35 families. From the study site the first location (1.600-1.700 asl) was dominated by Dissochaeta sp. with important value index 18,568%, the second (1.700-1.800 asl) was dominated by Diplazium pallidum with important value index 31,127%, the third (1.800-1.900 asl) was dominated by Hybanthus attenuatus with important value index 43,648%, the fourth (1.900- 2.000 asl) was dominated by Asplenium pellucidum with important value index 65,278%, the fifth (2.000-2.100 asl) was dominated by Gahnia japanica with important value index 80,219%, the sixth (2.100-2.200 asl), the seventh (2.200- 2.300 asl) and the eighth (2.300-2.400 asl) were dominated by Histiopteris incisa with important values index 49,537%, 83,462% and 92,575%, respectively. The highest diversity index of ground cover plants was 2,953 in the first location and the highest equibility index of ground cover plants was 84,810% between the seveth and the eighth loacation.