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Rina Purwaningsih, Rina
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Earth & Planetary Sciences

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Spatial Correlation Between Land Development Level and Vulnerability Level of Mass Movement in the Watershed of Kayangan, Kulon Progo Regency, Yogayakarta Special Region Sartohadi, Junun; Purwaningsih, Rina
Forum Geografi Vol 18, No 1 (2004)
Publisher : Forum Geografi

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Abstract

The objective of this research were: 1) to study the degree of soil development, and 2) to study the spatial correlation between the degree of soil development and the degree of mass movement susceptibility in the research area. The sampling method applied in this research was stratified sampling. Soil mapping units were applied as strata. The sample within strata was determined according the degree of mass movement susceptibility. The degree of soil development was determined using quantitative method of color indices and proflie index. The color indices were Buntley – Westin (B – W), Harden (H), and Hurst. The profile index was determined using solum, texture, structure, and soil consistency. The degree of mass movement susceptibility map was taken from PSBA UGM (2001). Spatial correlation between the soil development map and the mass movement susceptibility map was analyzed using “error matrix”. The result of this research indicated that the degree of soil development in the research area could be classified into three classes, i.e. class 1 (weakly develop soil); class 2 (moderately developed soil), class 3 (strongly developed soil). The degree of mass movement susceptibility was classified into three classes, i.e. class 1 (low susceptibility), class 2 (moderate susceptibility), and class 3 (high susceptibility). The result of error matrix calculation between mass movement susceptibility and soil development were 9.56%; 21.96%; 30.21% for BW + Ha, Hurst, and profile indices respectively. There values showed that there were low spatial correlations between the degree of soil development and mass movement susceptibility in the study area.
Spatial Correlation Between Land Development Level and Vulnerability Level of Mass Movement in the Watershed of Kayangan, Kulon Progo Regency, Yogayakarta Special Region Sartohadi, Junun; Purwaningsih, Rina
Forum Geografi Vol 18, No 1 (2004)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v18i1.596

Abstract

The objective of this research were: 1) to study the degree of soil development, and 2) to study the spatial correlation between the degree of soil development and the degree of mass movement susceptibility in the research area. The sampling method applied in this research was stratified sampling. Soil mapping units were applied as strata. The sample within strata was determined according the degree of mass movement susceptibility. The degree of soil development was determined using quantitative method of color indices and proflie index. The color indices were Buntley – Westin (B – W), Harden (H), and Hurst. The profile index was determined using solum, texture, structure, and soil consistency. The degree of mass movement susceptibility map was taken from PSBA UGM (2001). Spatial correlation between the soil development map and the mass movement susceptibility map was analyzed using “error matrix”. The result of this research indicated that the degree of soil development in the research area could be classified into three classes, i.e. class 1 (weakly develop soil); class 2 (moderately developed soil), class 3 (strongly developed soil). The degree of mass movement susceptibility was classified into three classes, i.e. class 1 (low susceptibility), class 2 (moderate susceptibility), and class 3 (high susceptibility). The result of error matrix calculation between mass movement susceptibility and soil development were 9.56%; 21.96%; 30.21% for BW + Ha, Hurst, and profile indices respectively. There values showed that there were low spatial correlations between the degree of soil development and mass movement susceptibility in the study area.
Constraints on Adopting Land Conservation Technologies Among Cassava Farmers in Volcanic Hillslope Prone to Landslide, Indonesia Pratiwi, Elok Surya; Islami, Jihan Dwi; Purwaningsih, Rina; Sartohadi, Junun; Ota, Masahiko; Hadi, Intan Permata; Patanduk, Alvince; Annisa, Hertiyana Nur; Setio Hadinugroho, Hunggul Yudono; Setiawan, Ogi; Nugroho, Bayu Dwi Apri
Forum Geografi Vol. 39 No. 3 (2025): December 2025
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v39i3.9773

Abstract

The adoption of land conservation technologies (LCTs) in smallholder farming systems often remains limited due to diverse, context specific constraints, highlighting the need for localized analyses. This study examines the barriers to LCTs adoption among cassava farmers residing on landslide-prone volcanic slopes in Magelang Regency, Indonesia. A qualitative approach was employed, involving semi-structured interviews with eight low-income farmers. The analysis identifies two key determinants of non-adoption: perceived benefits and socio-cultural dynamics. Findings indicate that LCTs are perceived as having low applicability because farmers limited investment capacity, and encounter difficulties in altering traditional cultivation practices. These results expose the shortcomings of previous intervention programs and underscore the need to foster long-term conservation practices through institutional support. Government involvement in establishing village-level environmental regulations is essential to enable the allocation of village funds for farmer investments in LCTs. The study calls for more context-sensitive strategies and policy frameworks that address the underlying causes of limited adoption among smallholder farmers in disaster prone landscapes.
Co-Authors Annisa, Hertiyana Nur Bayu Dwi Apri Nugroho, Bayu Dwi Apri Hadi, Intan Permata Islami, Jihan Dwi Junun Sartohadi Ogi Setiawan Ota, Masahiko Patanduk, Alvince Pratiwi, Elok Surya Setio Hadinugroho, Hunggul Yudono