Measuring the forest cover change in burnt area using change vector analysis approach

摘要

In 2015 the Jambi Province had been suffered from a big fire which destroying about 115,634 ha or 23% of the total area.This paper describes the measurement of the magnitude and direction of forest and land cover changes, especially in theburnt area of Harapan Rainforest, Jambi, occurred in 2015. The main objective of this study is to find out the magnitudeas well as the direction of forest cover changes caused by fire. The magnitude and direction of changes were derived byusing Change Vector Analysis (CVA) Approach on the basis of medium-resolution of Landsat 8 acquired in 2014representing before fire condition and Landsat 8 recorded in 2016 representing after fire condition. The study shows thatthe magnitude of changes in the study site varied widely starting from slightly to heavily changes. The identified directionof the changes could be grouped into positive and negative directions, where the negative directions include degradation(D1) and deforestation (D2), while the positive directions include regrowth (D3) and revegetation (D4). The area sufferingfrom degradation and deforestation are 3,540 ha and 3,106 ha respectively, while the area experiencing vegetation thevegetation growth and revegetation are 55 ha and 227 ha. The study concludes that the CVA could be used to find outthe magnitude and change direction (positive and negative) effectively.