Spatial Metrics of Deforestation in Kampar and Indragiri Hulu, Riau Province

S Rijal, ,T Tiryana,I N S Jaya,M B Saleh

doi:10.7226/jtfm.22.1.24

Abstract

The Riau Province has been suffering from the highest deforestation rate in Sumatra, Indonesia. Many and various factors haved been discussed as causes of different deforestation types. This research is focused on evaluating the spatial pattern of deforestation in a specific location respresenting a typical deforestation in Riau. The main objective of this study was to identify spatial metrics to describe deforestation that occurred in Kampar and Indragiri Hulu regencies.The study divided the deforestation process into 3 periods of observation, e.g., 1990–2000, 2000–2010, and 2010–2014. The study based on Landsat satellite imagery aquired in 1990, 2000, 2010, and 2014 as the main data sources. The deforestation was detected using post-classification comparison (PCC) on the basis of 11 land cover classes developed prior to any further change detection. The deforestation was initially derived from reclassifying the original classes into only forest and non-forest classes, and then followed by spatial pattern analysis using Fragstat software. The study shows that 2 spatial pattern of deforestation in Kampar distinctly differs from those occurred in Indragiri Hulu Regency, particularly for the period of 1990–2014. The spatial pattern of deforestation in Kampar Regency were clumped, low contiguous between patch, and high fragmentated. Meanwhile, the spatial pattern in Indragiri Hulu Regency were clumped, high contiguous between patch, and low fragmentated. Profile of deforestation in Kampar Regency was cathegorized into early deforestation and Indragiri Hulu Regency as lately deforestation.

Highlights

Sumatra is an island with the highest deforestation rate in Indonesia, because it encountered 70% forest conversion in the period 1990–2010 (Margono et al 2012)
Kampar Regency suffered the highest deforestation over the 1990–2000 period (60.18%) and continued to decline
Deforestation in Kampar Regency (Figure 2) over the 1990–2000 period spent most of the northern part of the forest that borders the City of Pekanbaru (Figure 2a)

Summary

Introduction

Sumatra is an island with the highest deforestation rate in Indonesia, because it encountered 70% forest conversion in the period 1990–2010 (Margono et al 2012). The Sumatera's deforestation reached 6.5 million ha (28%) in 1985–1997 (GWF/IFW 2002). Sumatra had lost about 7.54 million ha of primary forests (47%) in 1990–2010. The remaining primary forests amounted to 30.4% (Margono et al 2012). Riau and South Sumatera Provinces in Sumatera were experiencing great loss of primary forests of more than 50% in the period 1990–2010. The greatest Sumateran forest loss occurred in Riau Province that reached 42% of the total forest areas in the period 1990–2010 (Margono et al 2012)

Objectives

Methods

Results

Conclusion