Walidatika, Nurita and , Agus Anggoro Sigit, S.Si., M.Sc. (2017) Estimasi Evapotranspirasi melalui Analisis Metode Kesetimbangan Energi di Kabupaten Bantul Tahun 2015 dengan Memanfaatkan Citra Landsat 8. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
The drought in Bantul regency at 2015 affected 19 villages in 8 districts. It showed that Bantul regency is categorized as a region with abundant water reserves, but the water resources management is still limited. Drought occurrence needs to be monitored for water availability and estimation of water demans to achieve the development and management of directed water resources. Evapotranspiration becomes an important factor in climate change related to water resources management. This is because evapotranspiration related to equilibrium of water with energy balance of land, plants and atmospheric systems. Evapotranspiration value in each type of vegetation is different not only influenced by climate condition ie air temperature and average air velocity, but also influenced by soil moisture of its territory. The objectives of this research are 1) mapping the distribution of soil moisture and evapotranspiration in Bantul regency on Landsat 8 image recording on February 22, 2015 and September 18, 2015 based on remote sense application and geographic information system with spatial approach; and 2) to analyze the evapotranspiration change of vegetation based on qualitative SIG approach in Bantul regency. The method used in this research is the method of Temperature Vegetation Dryness Index (TVDI) and Energy Equilibrium. With the formula TVDI it will produce an index for soil moisture, if the value close to 1 it will be identified as dry and if the value close to 0 will be identified as wet. The equilibrium energy formula is derived from TVDI which will produce an evapotranspiration estimate by relate air temperature and wind speed. The results of this research are 1) Distribution of Soil Humidity in Bantul regency at February and September 2015 showed that February has a normal dominant land humidity area of 66.87% and September has dominantly dry with wide coverage of 80.41%; 2) Evapotranspiration Distribution of Bantul regency at February and September 2015 showed that February has the widest evapotranspiration of 174.15 km2 and September is the highest coverage of high class by 148.12 km2; and 3) Changes in Aggregation of Evapotranspiration to Vegetation Type in Bantul regency at February and September 2015 showed a wide change with a percentage of 48.04% and fixed class with a broad percentage of 51%. Factors that affect the distribution of evapotranspiration values in each type of vegetation are the characteristics and types of vegetation, geomorphological conditions, and the effect of community cultivation.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Landsat 8, Kesetimbangan Energi, Evapotranspirasi |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GB Physical geography G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Divisions: | Fakultas Geografi > Geografi Fakultas Geografi > Geografi Fakultas Geografi > Geografi |
| Depositing User: | NURITA WALIDATIKA |
| Date Deposited: | 08 Nov 2017 03:15 |
| Last Modified: | 01 Nov 2024 06:41 |
| URI: | http://eprints.ums.ac.id/id/eprint/57241 |
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