Composition and vegetation structure of tembawang agroforestry in Sanggau District, West Kalimantan

Abstract

Sumarhani, Kalima T. 2015. Composition and Vegetation Structure of Tembawang Agroforestry in Sanggau District, West Kalimantan. Pros Sem Nas Masy Biodiv Indon 1: 1099-1104. Tembawang is a forest land management system performed by the Dayak tribe to implement mixed agroforestry system that consists of fruit and forest tree species. The existence of tembawang provides substantial benefits for society and environment. The research aimed to study the development of trees within tembawang system and communities income of the agroforest system. This study was conducted in two sub-villages i.e., Periji and Tukun, Sei Dangin village, Noyan sub-District, Sanggau District, West Kalimantan. Vegetation analysis and interview with the local people were used as a method in this research. Vegetation analysis of trees in tembawang was done on 10 sample plots by 10m x 10m. To know the characteristic and respondents income, structured interview using questionnaires was conducted. Collected data were analyzed descriptively and quantitatively. The results showed that the trees in agroforest tembawang are mostly non-timber forest products such as in Periji village, tengkawang (Shorea stenoptera) has the highest Important Value Index (IVI= 71.93%) where IVI of rubber (Hevea brasiliensis) is 67.31%; in Tukun village, durian (Durio zibethinus) (IVI = 47,60%) and rambutan (Nephelium lappaceum) (IVI = 35.15%). Average land use managed by local people is 2.5 ha per family and average annual household income of tembawang agroforest system is Rp 11,868,658.