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All Journal Justek : Jurnal Sains Dan Teknologi JURNAL GEOGRAFIKA (GEOGRAFI LINGKUNGAN LAHAN BASAH)
Zulfajri Zulfajri
Universitas Negeri Medan
Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Mathematics

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Integration of Geographic Information Systems in the Economic Valuation Analysis of Food Crops in Bleberan Village Muhammad Miftahurridlo; Zulfajri Zulfajri; Nur Hasanah; Darliandri Darliandri; Rohil Al Azizah
Justek : Jurnal Sains dan Teknologi Vol 9, No 2 (2026): June
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v9i2.39495

Abstract

The agricultural sector is a mainstay of the Indonesian economy, yet it faces serious challenges in the form of a nationwide decline in cultivated land area. This study aims to examine the state of food crop agriculture, identify the benefits derived by the community, and analyze the Total Economic Value (TEV) of agricultural activities in Bleberan Village, Playen Subdistrict, Gunungkidul Regency. The research method used is quantitative descriptive with an economic valuation approach. Data collection was conducted through observation, documentation, and interviews with 100 farmer respondents selected using the Slovin formula. Data analysis includes the calculation of direct utility value, indirect utility value, option value, and existence value. The results of the study indicate that agricultural activities in Bleberan Village are divided into three main phases: pre-planting, planting, and post-harvest, with corn as the flagship commodity due to its adaptation to dry land. The Total Economic Value (TEV) of food crop agricultural activities in Bleberan Village reached Rp 2,584,508,776. This value consists of direct benefits of Rp 1,493,057,500, indirect benefits of Rp 1,089,829,596 (including oxygen-producing and carbon-absorbing functions), choice value of Rp 468,840, and existence value of Rp 1,152,840. These findings confirm that the economic benefits of agriculture extend far beyond the mere market value of commodities, encompassing ecosystem services and existential values that are crucial to the sustainability of the region.
Analysis of Survival and Growth Rates of Young Mangroves Sabila Martin Dalimunte; M. Taufik Rahmadi; Meilinda Suriani Harefa; Eni Yuniastuti; Zulfajri Zulfajri; Eka Suci Anja Kusumawati; Dewi Permata Sari; Bagus Setiawan
Jurnal Geografika (Geografi Lingkungan Lahan Basah) Vol 7, No 1 (2026): GEOGRAFIKA
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jgp.v7i1.18702

Abstract

Mangrove ecosystems in Indonesia play an important role in coastal protection and biodiversity conservation. However, degradation caused by land-use change and past extreme events has increased the need for effective rehabilitation. Analysis of mangrove growth at an early stage is important because this phase determines the success of long-term restoration. This study aimed to analyze the survival rate and vegetative growth of young mangroves across six coastal villages in Simeulue Regency, Aceh Province, using a comparative site-based approach. Field surveys were conducted in October 2023 using purposive sampling and 1 × 1 m quadrat plots. Observed parameters included survival rate, plant height, stem diameter, species composition, and basic environmental conditions. Results showed significant variation among locations. Tanjung Raya (96.25%), Sambay (93.88%), and Ganting (92.88%) were categorized as highly successful (>80%). Labuan Bakti (68.68%) was moderate, while Pulau Bengkalak (42.15%) and Luan Balu (55.86%) were low. Vegetative growth did not always align with survival rate. Tanjung Raya showed both high survival and strong growth, while Luan Balu exhibited relatively high growth despite lower survival, indicating possible selective environmental pressure. Pulau Bengkalak had both low survival and moderate growth, reflecting ecological constraints. Biotic (crabs, snails), abiotic (tidal dynamics), and anthropogenic (livestock disturbance) factors influenced early mortality. Overall, successful mangrove rehabilitation depends not only on planting efforts but also on site suitability and adaptive local management.
Co-Authors Bagus Setiawan Darliandri, Darliandri Dewi Permata Sari Eka Suci Anja Kusumawati Eni Yuniastuti Harefa, Meilinda Suriani M. Taufik Rahmadi Miftahurridlo, Muhammad Nur hasanah Rohil Al Azizah Sabila Martin Dalimunte