Keanekaragaman Jenis dan Pendugaan Cadangan Karbon yang Tersimpan pada Hutan Sekunder dan Tambak di Desa Pulau Sembilan, kecamatan Pangkalan Susu, Kabupaten Langkat, Sumatera Utara

Abstract

ELIZABETH OKTARINI SIMANJUNTAK. Species diversity and Carbon stock estimation Pulau Sembilan Village, Pangkalan Susu Subdistrict, Langkat Regency, supervised by MOHAMMAD BASYUNI and LOLLIE AGUSTINA P. PUTRI. The purpose of this research is to identify the types of vegetation and the carbon stock estimation from mangrove forest and aquaculture in the village of Pulau Sembilan, Pangkalan Susu subdistrict, Langkat regency. The result showed that Bakau (Rhizophora apiculata)predominated vegetation type of seedlings, saplings and treees in the mangrove forest, with the highest importance value index (116,13%). On the other hand, Bruguiera parviflora had the highest INP (71,37%) of saplings, while at seedlings and trees levels were dominated by R. apiculata with INP, 65,30% and 75,48%, respectively. The diversity index of Shannon-Weiner was 1,11-1,49 at mangrove forest, while it was 1,44-1,72 at aquaculture. This results suggested that diversity index in this study was low.