KEKAYAAN JENIS POHON DI HUTAN TAMAN NASIONAL GUNUNG GEDE PANGRANGO, JAWA BARAT

Abstract

Trees are one of the main important structures in forest vegetation. Other than timber and non-timber product, trees also indirectly provide ecosystem services. Until now, information on tree species richness and its relation to the elevation gradient in Mount Gede-Pangrango National Park (MGPNP) is not exist. The objectives of this research were to estimate the trees species richness and describe the relation between tree diversity to the elevation gradient in this area. A total of 26 plots (size: 20 m x 100 m each) from 1,013 m- 3,010 m asl were laid down and classified into three zones i.e. sub montane (1,000 m-1,500 m asl), montane (1,500 m-2,400 m asl) and subalpine zone (>2,400 m asl). The results showed that tree species richness on this mountain taken from 1,479 enumerated trees was 127 species. Species richness of each zone were 79, 70 and 33 species for sub montane, montane and sub alpine zone respectively. The sub montane zone hold the highest tree species richness. A significant effect of elevation gradient to tree diversity indices was identified. The individual number was positively correlated, while species richness, Shannon-Wiener index and Evenness index were negatively correlated with elevation gradient.