CARBON STOCK IN AGROFORESTRY COFFEE PLANTATIONS WITH DIFFERENT SHADE TREES IN HIGHLAND AREA, THAILANDChattanong Podong, Krissana Khamfong, Supawadee Noinamsai and Sukanya KhattiAbstract Agroforestry has become an important land use type in northern, Thailand. It is vital to study agroforestry systems due to their ability to sequester carbon. This study investigates plantations that are located in the agricultural highland development station, northern Thailand, and it evaluates the above ground and soil carbon storage of agroforestry coffee plantations with different dominant shading trees, including Pinus Kesiya and Morus spp. These agroforestry systems were also when compared with a coffee plantation without shading trees. Biomass and carbon were estimated for trees and coffee shrubs using allometric equations. The total carbon stock for the site dominated by Pinus Kesiya was 359.36ton.ha-1, while for site dominated by Morus spp. it was 8.81 ton.ha-1. In the Sun coffee site the ecosystem carbon stock was 0.75 ton.ha-1. Empirical relationships of age versus DBH and height versus DBH of Coffea canephora showed a positive linear relationship. Linear regression analysis of age and DBH produced a slope coefficient of 0.7138. |