Research Article
Analysis of Land Use and Land Cover Changes and Trends in Fantalle Range Land, East Shewa Zone, Oromia Regional State, Ethiopia
Meseret Tilahun*
,
Dawit Abate,
Nabi Husein
Issue:
Volume 9, Issue 3, September 2024
Pages:
51-60
Received:
24 May 2024
Accepted:
19 June 2024
Published:
6 August 2024
Abstract: This study was conducted in Fantalle Range lands in East Shewa zone of, Oromia Region, Ethiopia, to assess land use land cover changes, trends, drivers and their socioeconomics. Household surveys were conducted through simple random sampling to collect qualitative data. Qualitative data are used to investigate the causes and effects of land use and land cover changes. SPSS software (version 20) was used for data analysis, and descriptive research methods were adopted. Additionally, map processing was done using ERDAS Imagine (version 9.1) and ArcGIS (version 10.1). The land use land cover classification activity was started by obtaining Landsat images of 1972, 1990, 2000 and 2020 at different intervals from the Earth Explorer (USGS) from the Landsat 4, Landsat 5, Landsat 7 and Landsat 8, respectively. Land use land cover change (LULCC) maps are generated based on year classification. Range land, agricultural land, woody vegetation, bare land and settlement are the five main LULCC categories generated from satellite data. The findings show that in the presence of LULCC, agricultural land, settlements and bare land expand significantly, while range land and woodland show a decreasing trend. The classification results of the 1972 image show that rangeland/grazing land accounts for the largest proportion of the land in this area, accounting for 31.6%. In addition, due to various factors, the number of livestock owned in pastoral areas is also decreasing. The main cause of changes in livestock types is drought, which can cause different impacts, such as feed and water shortages and health problems. Therefore, intervention in land use manipulation is needed to maintain ecosystems and natural resources. Furthermore, rangeland policies should be developed to maintain pastoral and pastoral systems.
Abstract: This study was conducted in Fantalle Range lands in East Shewa zone of, Oromia Region, Ethiopia, to assess land use land cover changes, trends, drivers and their socioeconomics. Household surveys were conducted through simple random sampling to collect qualitative data. Qualitative data are used to investigate the causes and effects of land use and...
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Research Article
Active Tectonic Features of Muong Te Zone from Geomophological Indicators
Nguyen Huu Tuyen*,
Phung Thi Thu Hang
Issue:
Volume 9, Issue 3, September 2024
Pages:
61-73
Received:
5 June 2024
Accepted:
26 June 2024
Published:
29 October 2024
Abstract: The Muong Te fault zone is known as the active tectonic area in Northwest Vietnam, proved by earthquakes with the most recent one of Ms 4.9 on June 16, 2020 and hundreds of aftershocks accompanying with landslides. The neotectonic activities of the study area is asssessed by analysing 61 sub-basins in term of geomorphological indices: Ratio of valley floor width to valley height (Vf), Stream-Length gradient index (SL), Hypsometric integral index (HI), Hypsometric curve (HC) and Index of Relative Active Tectonics (IRAT). As a results, this are has: relative lowVf corresponding to the terrain of V-shape valleys; SL in large range from 10 to 7000 (gradient - m); straight – convex H ccurve and HI in the range of 0,422 – 0,51 corresponding to the developing phase of river basins; More than 50% of asymmetric basins (AF) due to tectonic impacts. IRAT ranging from 1.25 to 2.5 divided into 3 classes according to the tectonic levels: (1) – strong uplift with - IRAT < 1.5, (2) moderate uplift with IRAT from 1.5 to 2.0 (strong) and (3) weak uplift with IRAT more than 2. The calculated values of the indices are seemed very consistent with the tectonic-geological features of the Muong Te area.
Abstract: The Muong Te fault zone is known as the active tectonic area in Northwest Vietnam, proved by earthquakes with the most recent one of Ms 4.9 on June 16, 2020 and hundreds of aftershocks accompanying with landslides. The neotectonic activities of the study area is asssessed by analysing 61 sub-basins in term of geomorphological indices: Ratio of vall...
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