Archive for May, 2012

Master Thesis: The Influence of Socio-economic Variables on Landuse and Landcover Change in Gunung Halimun Salak National Park.

Haryanto Yatap, Hardjanto & Lilik B.Prasetyo

Gunung Halimun Salak is one of national park in Indonesia, located in West Java and Banten Province.  In 2003, government has expanded its area by more than 70000 hectares.  It caused a lot of conflicts between local communities and national park officials.  Many case studies showed that the local communities has used the natural resources for construction materials, fuel wood, medicine, food, cultural needs, forages, hunting, handicraft, gold mining, agriculture land, and settlement.  There was clear evidence that in Gunung Halimun Salak National Park, during 15 years period (1989-2004), forest cover area decreased by more than 25%.

 

The objectives of the research are:

1) to identify socio-economic variables causing landuse and landcover change;

2) to estimate influence of key  socio-economic variables;

3) to estimate the need of agricultural land and settlement for local communities; and

4) to estimate the direct benefit value of the national park.

Selection of sampling location was used by stratified cluster sampling. Socio-economic data collected from interviews with 900 head of households which lived in 30 villages in and around the national park.  The technique of data processing analysis were done using spatial analysis, descriptive analysis, linear regression analysis, population pressure analysis, and substitution and market price analysis.

The result of analysis showed that the population growth, population density, land ownership, agricultural land and settlement expansion are the key variables that influenced landuse and landcover change.  The need of agricultural land was 0.54 hectares per person, and the direct benefit value of the national park was more than IDR 237 billion per year.

Keywords: socio-economic variable, landuse and landcover change, national park, stratified cluster sampling

Corresponding Author : Lilik B.Prasetyo (lbprastdp@yahoo.com)

Master Thesis Seminar : Amphibians dispersal in palm oil plantation landscape elements (case study on PT. Kencana Sawit Indonesia, South Solok District, West Sumatra).

Edwin Wira Pradana, Mirza Dikari Kusrini, Lilik Budi Prasetyo

 Abstract

High conservation value forest approach on palm oil sustainability management brings heterogeneity in landscape perspective, but ecologically it may susceptible  for amphibians community conservation, due to habitat fragmentation that may act as dispersal barrier, through matrix permeability and corridor effectiveness.  Objective scientific observation on impact of agricultural activity on amphibians dispersal could be used to help mitigation efforts. This research aimed to analyze amphibians diversity similarity on landscape elements, analyzing amphibians dispersal by proving amphibians diversity correlation with distance from core area on corridor and matrix, comparing direct/non direct link corridor to core area and upstream/downstream diversity, and distribution spread and dispersal ability at landscape elements. Visual Encounter Survey (VES) with transect design method was conducted in Core Area, matrix and corridor. Total 1055 individual Found at site consist 5 Family, 9 Genera and 27 species, there are no significantly different in amphibians diversity due to distance correlation to core area, direct/non direct link and upstream/downstream corridors but significant on core area-matrix distance correlation. Almost all forest specialist has limited distribution to core area  and corridor and aquatic species suggest capable to survive than terrestrial species through to dispersal ability in landscape element. corridors only effective working for aquatic species and habitat fragmentation  effect is vary in each species.

 

 Keywords: dispersal, amphibians community, landscape element, palm oil

 Corresponding author : pradana.edwin@gmail.com