scholarly journals Perubahan lahan vegetasi berbasis citra satelit di DAS Citarum, Bandung, Jawa Barat

2021 ◽  
Vol 35 (1) ◽  
pp. 54
Author(s):  
Teguh Husodo ◽  
Yazid Ali ◽  
Siti Rodiatan Mardiyah ◽  
Sya Sya Shanida ◽  
Oekan S Abdoellah ◽  
...  

Abstrak DAS Citarum mengalami perubahan struktur lingkungan yang tinggi yang berakibat pada penurunan kualitas lingkungan, sehingga diperlukan gambaran mendetail mengenai kondisi perubahan lahan vegetasi di DAS Citarum. Tujuan dari penelitian ini untuk mengetahui proses perubahan luasan lahan vegetasi di DAS Citarum, Bandung, Jawa Barat. Penelitian ini menggunakan data penginderaan jauh dengan pendekatan kuantitatif. Pemetaan perubahan penutupan vegetasi di DAS Citarum menggunakan data citra Landsat multitemporal dengan perangkat lunak QGIS. Pada pelaksanaan penelitian ini, beberapa tahapan yang dilakukan, diantaranya pengolahan awal citra satelit (pre-processing), pengolahan citra digital (image processing), verifikasi data citra (NDVI), dan analisis perubahan penutupan lahan. Hasil studi menunjukkan bahwa terjadi penurunan luasan lahan vegetasi seluas 35% pada tahun 1989 – 2019 dengan rata-rata penyusutan luas lahan sebesar 0.64% setiap tahunnya dan penyusutan terbesar pada tahun 2006. Penyusutan lahan cenderung terjadi pada wilayah yang berbatasan dengan Kota Bandung, yang diperkirakan sebagai bagian dari pengembangan wilayah kota kedaerah sekitarnya dan hasil menunjukkan wilayah yang mengalami penyusutan terbesar merupakan kecamatan dengan luas wilayah relatif kecil dibandingkan dengan wilayah kecamatan lainnya seperti Cipatat (74%) dan Batujajar (83%). Meski demikian, selama periode tahun 1989 – 2019, beberapa kecamatan menunjukkan peningkatan luas lahan bervegetasi seperti Kecamatan Bojongsoang, Slawi, dan Tanjungsari. Kata kunci: Citra Satelit, Landsat, Penyusutan Lahan. Abstract The Citarum watershed undergoes a significant change in environmental structure, which results in a decrease in environmental quality, so a detailed description of the conditions of land change in vegetation in the Citarum watershed is needed. The main objective of this study: the process of changing the area of vegetation in the Citarum watershed, Bandung, West Java. This study uses remote sensing data with a quantitative approach. Mapping of land cover changes in the Citarum watershed uses multitemporal Landsat imagery with QGIS software. Several steps were carried out, including pre-processing, image processing, NDVI, and land cover change analysis. The study results show a decrease in the area of vegetation area of 35% in 1989 - 2019, with an average shrinkage of the land area of 0.64% annually and the most extensive shrinkage in 2006. Land shrinkage tends to occur in areas bordering Bandung City, which is estimated as part of the city's development to the surrounding area. The most extensive shrinkage areas are the districts with relatively small areas compared to other sub-districts such as Cipatat (74%) and Batujajar (83%). However, during the period 1989 - 2019, several sub-districts showed an increase in vegetated land areas, such as Bojongsoang, Slawi, and Tanjungsari Districts. 

Forest cover in Bengkulu is reduced. Data from WARSI shows, 1990 forest cover areas in the province are approximately 1,009,209 hectares or 50.4 % of the land area reaching 1,979,515 hectares. But now, it is only 685,762 hectares of the area of his blood. That is, the period of 25 years, there is a forest cover decline of 323,447 hectares. Forest and land cover changes are the largest contributor to greenhouse gas emissions. The purpose of this article is to see land cover changes based on carbon stock in the years 2009 and 2018. Model of land cover change based on carbon stock year 2028 and 2038. The method of this research uses the calculation of the Stock Difference Approach with spatial analysis of national land closure of Landsat imagery 2009-2018 and biomass data for forest inventory results Geographic Information System (GIS). The results of this research were the reduced forest area and the change in land use changed from 2009 and 2018. So carbon stock is also increasingly reduced.


2018 ◽  
Vol 6 (3) ◽  
pp. 1
Author(s):  
Yuliana Kristin ◽  
Rommy Qurniati ◽  
Hari Kaskoyo

Wan Abdul Rachman Forest Park (Tahura WAR) has experienced the fluctuations in land cover changes in each year. It caused by the interaction of community in utilization of Tahura WAR. The purpose of this study was to determine the level of interaction by the community around Tahura WAR and the influenced factors of it. The product moment correlation analysis was used to see the real relation between the independent variables (the level of interaction) and the dependent variable (land area, income, and the number of family dependents). The result showed that the interaction of the community in the Tahura WAR was moderate. It included the activity of community-related in utilization, preservation and forest protection. The level of interaction was influenced by the land area and the income level of the respondents. Keywords: interaction, Tahura WAR, land area, income.


2019 ◽  
Vol 41 (1) ◽  
pp. 146-153 ◽  
Author(s):  
Megersa Olumana Dinka ◽  
Degefa Dhuga Chaka

Abstract Land use/land cover changes (LULCC) at Adei watershed (Ethiopia) over a period of 23 years (1986–2009) has been analysed from LANDSAT imagery and ancillary data. The patterns (magnitude and direction) of LULCC were quantified and the final land use/land cover maps were produced after a supervised classification with appropriate post-processing. Image analysis results revealed that the study area has undergone substantial LULCC, primarily a shift from natural cover into managed agro-systems, which is apparently attributed to the increasing both human and livestock pressure. Over the 23 years, the aerial coverage of forest and grass lands declined by 8.5% and 4.3%, respectively. On the other hand, agricultural and shrub lands expanded by 9.1% and 3.7%, respectively. This shows that most of the previously covered by forest and grass lands are mostly shifted to the rapidly expanding farm land use classes. The findings of this study suggested that the rate of LULCC over the study period, particularly deforestation due to the expansion of farmland need to be given due attention to maintain the stability and sustainability of the ecosystem.


Land ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 152 ◽  
Author(s):  
Henry Schubert ◽  
Andrés Caballero Calvo ◽  
Markus Rauchecker ◽  
Oscar Rojas-Zamora ◽  
Grischa Brokamp ◽  
...  

Barranquilla is known as a dynamically growing city in the Colombian Caribbean. Urbanisation induces land use and land cover (LULC) changes in the city and its hinterland affecting the region’s climate and biodiversity. This paper aims to identify the trends of land use and land cover changes in the hinterland of Barranquilla corresponding to 13 municipalities in the north of the Department Atlántico. Landsat TM/ETM/OLI imagery from 1985 to 2017 was used to map and analyse the spatio-temporal development of land use and land cover changes. During the investigation period, the settlement areas grew by approximately 50% (from 103.3 to 153.6 km2), while areas with woody vegetation cover experienced dynamic changes and increased in size since 2001. Peri-urban and rural areas were characterized by highly dynamic changes, particularly regarding clearing and recovery of vegetated areas. Regression analyses were performed to identify the impact factors of detected vegetation cover changes. Computed logistic regression models included 20 independent variables, such as relief, climate, soil, proximity characteristics and socio-economic data. The results of this study may act as a basis to enable researchers and decision-makers to focus on the most important signals of systematic landscape transformations and on the conservation of ecosystems and the services they provide.


2015 ◽  
Vol 27 (4) ◽  
pp. 899-909 ◽  
Author(s):  
M. Rafiqul Islam ◽  
M. Giashuddin Miah ◽  
Yoshio Inoue

2015 ◽  
Vol 81 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Michael Campbell ◽  
Russell G. Congalton ◽  
Joel Hartter ◽  
Mark Ducey

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