The Litter Production and Nutrients Return of Teak Plantation Forest at East Kalimantan, Indonesia

The nutrients return through the forest stand litters is substantial mechanism of nutrient cycle in the forest ecosystem. The objectives of this research are to find out the litters production, the nutrient concentration of litters, and the amount of litter nutrient (N,P,K, Ca,Mg ) of  teak plantation forest at East Kalimantan, Indonesia. The 19 years old teak-dried litter weight more than 12. The litter is mainly composed by teak leaves elements, successively followed by other elements, such as; branch twig, tree skin and non-teak leaves elements. As a matter of fact, at all the litter elements, the higher nutrient concentration is Ca and otherwise P as the lowest. The amount of litter nutrient substance N, P, K, Ca and Mg in the 19 years-teak is more than 12 years. The amount of litter nutrient substance in both stand teaks are Ca as the most and P, conversely.