Water resources carrying capacity before and after volcanic eruption
BACKGROUND AND OBJECTIVES: Water resources carrying capacity is dynamic and can be influenced by catastrophic volcanic eruptions. The eruption of Mount Merapi in 2010 changed the landscape and community livelihoods due to the redistribution of a large volume of volcanic materials. This study aims to...
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2022-10-01
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| Series: | Global Journal of Environmental Science and Management |
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| author | M. Dede S.B. Wibowo Y. Prasetyo I.W. Nurani P.B. Setyowati S. Sunardi |
| author_facet | M. Dede S.B. Wibowo Y. Prasetyo I.W. Nurani P.B. Setyowati S. Sunardi |
| author_sort | M. Dede |
| collection | DOAJ |
| description | BACKGROUND AND OBJECTIVES: Water resources carrying capacity is dynamic and can be influenced by catastrophic volcanic eruptions. The eruption of Mount Merapi in 2010 changed the landscape and community livelihoods due to the redistribution of a large volume of volcanic materials. This study aims to analyze water resources carrying capacity before and after the major 2010 eruption of Mount Merapi.METHODS: The value of water resources carrying capacity is derived from that of water availability and the domestic water needs per capita per year. The model uses a grid of 100 x 100 meter cells to determine the spatial distribution of water resources carrying capacity in Krasak watershed, and this analysis considers the years 2008, before the eruption, and 2021, after the eruption. The population distribution data have been previously mapped by referring to statistical data and land use at the village level, while water availability is calculated considering rainfall, potential evaporation rate, and runoff.FINDINGS: Water resources carrying capacity in Krasak watershed has undergone changes related to the distribution of volcanic material and human activities. The water resources carrying capacity for both periods experienced a surplus, although there has been an average decrease of 331.50 cubic meters per year for each grid cell. Water resources carrying capacity analysis shows a decline, especially in the midstream and downstream. Based on T-Test, there are significant changes in the water resources carrying capacity at 2008 and 2021 (p-value 0.047 and 95% confidence level).CONCLUSION: Water resources carrying capacity increased only in some locations that occurred ecosystem succession after the eruption, although areas near the peak are decreased by sand and stone mining. The spatial-gridded model proved capable of analyzing this phenomenon. |
| format | Article |
| id | doaj-art-a5fa916811d8478da31ca0e83bd4b16a |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | GJESM Publisher |
| record_format | Article |
| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-a5fa916811d8478da31ca0e83bd4b16a2025-02-02T14:07:29ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662022-10-018447348410.22034/GJESM.2022.04.02249013Water resources carrying capacity before and after volcanic eruptionM. Dede0S.B. Wibowo1Y. Prasetyo2I.W. Nurani3P.B. Setyowati4S. Sunardi5Center for Environment and Sustainability Science, Universitas Padjadjaran, Bandung City, IndonesiaFaculty of Geography, Universitas Gadjah Mada, Yogyakarta, IndonesiaDepartment of Geodetic Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang City, IndonesiaFaculty of Geography, Universitas Gadjah Mada, Yogyakarta, IndonesiaFaculty of Agriculture, Universitas Brawijaya, Malang, IndonesiaCenter for Environment and Sustainability Science, Universitas Padjadjaran, Bandung City, IndonesiaBACKGROUND AND OBJECTIVES: Water resources carrying capacity is dynamic and can be influenced by catastrophic volcanic eruptions. The eruption of Mount Merapi in 2010 changed the landscape and community livelihoods due to the redistribution of a large volume of volcanic materials. This study aims to analyze water resources carrying capacity before and after the major 2010 eruption of Mount Merapi.METHODS: The value of water resources carrying capacity is derived from that of water availability and the domestic water needs per capita per year. The model uses a grid of 100 x 100 meter cells to determine the spatial distribution of water resources carrying capacity in Krasak watershed, and this analysis considers the years 2008, before the eruption, and 2021, after the eruption. The population distribution data have been previously mapped by referring to statistical data and land use at the village level, while water availability is calculated considering rainfall, potential evaporation rate, and runoff.FINDINGS: Water resources carrying capacity in Krasak watershed has undergone changes related to the distribution of volcanic material and human activities. The water resources carrying capacity for both periods experienced a surplus, although there has been an average decrease of 331.50 cubic meters per year for each grid cell. Water resources carrying capacity analysis shows a decline, especially in the midstream and downstream. Based on T-Test, there are significant changes in the water resources carrying capacity at 2008 and 2021 (p-value 0.047 and 95% confidence level).CONCLUSION: Water resources carrying capacity increased only in some locations that occurred ecosystem succession after the eruption, although areas near the peak are decreased by sand and stone mining. The spatial-gridded model proved capable of analyzing this phenomenon.https://www.gjesm.net/article_249013_5a791cad59b13a7b5cd6e404702da817.pdfmount merapispatial-gridded modelwater availabilitywater needs |
| spellingShingle | M. Dede S.B. Wibowo Y. Prasetyo I.W. Nurani P.B. Setyowati S. Sunardi Water resources carrying capacity before and after volcanic eruption Global Journal of Environmental Science and Management mount merapi spatial-gridded model water availability water needs |
| title | Water resources carrying capacity before and after volcanic eruption |
| title_full | Water resources carrying capacity before and after volcanic eruption |
| title_fullStr | Water resources carrying capacity before and after volcanic eruption |
| title_full_unstemmed | Water resources carrying capacity before and after volcanic eruption |
| title_short | Water resources carrying capacity before and after volcanic eruption |
| title_sort | water resources carrying capacity before and after volcanic eruption |
| topic | mount merapi spatial-gridded model water availability water needs |
| url | https://www.gjesm.net/article_249013_5a791cad59b13a7b5cd6e404702da817.pdf |
| work_keys_str_mv | AT mdede waterresourcescarryingcapacitybeforeandaftervolcaniceruption AT sbwibowo waterresourcescarryingcapacitybeforeandaftervolcaniceruption AT yprasetyo waterresourcescarryingcapacitybeforeandaftervolcaniceruption AT iwnurani waterresourcescarryingcapacitybeforeandaftervolcaniceruption AT pbsetyowati waterresourcescarryingcapacitybeforeandaftervolcaniceruption AT ssunardi waterresourcescarryingcapacitybeforeandaftervolcaniceruption |