Connectivtiy of Remained Tropical Rain Forest in Langkat District, Indonesia

Anita Zaitunah, Samsuri Samsuri


Remained forest connectivity facilitates organism movement, genetic exchange, and other ecological material flows. Low connectivity may decrease ecosystem production and cut the material flows within the forest ecosystems. The connectivity of ramaining forest is needed to determine the management strategy of forest landscape as a wildlife habitat. This paper describe connectivity of remaining tropical forest in Langkat district and explain correlation between connectivity and biophysical as well as anthropogenic factors. Landsat satellite imageries of year 1990 (Landsat TM), 2010 (SPOT), and 2015 (Landsat 8 OLI) were used to identify land cover in several different years. Fragstat was used to generate landscape metrics of the study area. Landscape metrics were analyzed using a scoring method to determine the connectivity degree of remaining forest. A Pearson correlation analysis was performed to obtain a correlation between connectivity degree and the distance from roads, the distance from rivers, elevation and slope. The study found that the total forest area and the landscape connectivity tend to decrease over the period from 1990 to 2015. The lowest connectivity degree was found in Wampu watershed. . The connectivity degree of remaining forest has a positive correlation with the slope and and the elevation.


connectivity; tropical rain forest; Leuser ecosystem; degraded forest; fragstat.

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