The Use of Remote Sensing Technology and Geographic Information Systems to Calculate CO2 Uptake and Emissions in Denpasar City

Rapid economic growth in the city of Denpasar has an impact on the rate of population growth. This will lead to an increase in the need for land for settlements, facilities and infrastructure, and other supporting facilities. Meanwhile, the availability of land for green open space (RTH) will be increasingly reduced. Several studies show that from year to year the area of ​​vegetation cover decreases, and the air temperature in Denpasar City increases. Therefore, research is needed to calculate CO2 uptake by urban plants and CO2 emissions from various activities in Denpasar City. Estimation of CO2 uptake by plants is done using remote sensing technology and GIS. Meanwhile, the calculation of CO2 emissions is done by an inventory of CO2 polluting sources both from point sources, areas, and mobile sources. The output of this study is a map of CO2 absorption and emission distribution. From this map it can be seen whether the Denpasar City CO2 emissions are higher than the ability of existing plants to absorb them. If that happens, it is necessary to have a regulation from the City Government to overcome this problem. Another important outcome is the new green space threshold model for Denpasar City and other large cities with densely populated cities. The model is built on the ability of CO2 absorption by city plants and the amount of CO2 emissions in the city.