Keanekaragaman Pohon dan Pole serta Potensi Karbon Tersimpan di Kawasan Hutan Sekunder 30 Tahun dan Perkebunan Kopi Telagah, Langkat

Abstract

The Diversity of Tree and Pole And Potential Of Carbon Stored In 30 Years Secondary Forest Area And Coffee Field at Telagah District of Langkat was investigated on February to June 2012. Study site was determined by purposive sampling with total area 40 x 200 meters devided into 20 plots and subplots. On research sites. There were found 15 family and 23 species for tree phase; 16 family and 25 species of pole phase. This study site was dominated by Macaranga tanaria with important value index of tree phase is 57, 11%, and Ficus aurantiaceae with important value index of pole phase is 55, 472%. Diversity index of tree phase is 2, 650 and 2, 715 for pole phase. Equitability index of tree phase is 0, 520 and 0, 586 for pole phase. Potential of carbon stored in tree phase is 146, 519 ton/ha; 3, 933 ton/ha for pole phase; and 0, 0489 ton/ha for coffee plantation.