ESTIMATION OF TROPICAL FOREST BIOMASS FOR ASSESSMENT OF CARBON SEQUESTRATION USING REGRESSION MODELS AND REMOTE SENSING IN BERAU, EAST KALIMANTAN, INDONESIA

摘要

Greenhouse gases play an important role on Earth's climate. These include water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When sunlight reaches the surface of the Earth, some are absorbed and warm the Earth. In turn, the Earth emits long wave radiation towards the atmosphere, a fraction of which is absorbed by the greenhouse gases. The Greenhouse gases then emits long wave radiation both towards space and back to the Earth. The energy emitted downward further warms the surface of the Earth. The process of absorbing long wave radiation by the greenhouse gases and emitting it back resulting to more warming of the Earth's surface is called "greenhouse effect". When the concentration of greenhouse gasses in the atmosphere increased, temperature at the Earth's surface is also expected to increase. Climate models developed in the 90's have shown that global surface air temperature may increase by 1.4 °C to 5.8°C at the end of the century (IPCC, 2001; Rahmstorf and Ganopolski, 1999). Recent IPCC (2007) report predicted increase in temperature with more precision at 1.8 °C to 4 °C at the end of the century. Petit et al. (1999) has link temperature increase to increase in the concentration of CO_2 in the atmosphere.