Analysis of Land Cover Changes as One of The Quality Indicators of The Biang Loe River Watershed

Abstract

Abstract The problem of changes in land cover is caused by two main factors, namely natural factors and human factors. Natural factors include landslides, erosion, floods, while human factors are closely related to population growth, livelihooods, accesibility, but the main factor is the increase in population, causing the need for space and land to increase. This research aims to identify changes in land cover that occurred in 2013, 2018, and 2023 using Landsat 8 image data, followed by an assessment of the percentage of vegetation cover (PPV) in the Biang Loe River Watershed. Analysis of land cover changes using the Geographic Information System (GIS) via the overlay method and permanently vegetated land to assess PPV. In the 2013-2018 and 2018-2023 periods, the dominant land cover classes that experienced changes were mixed dry land agriculture and dry land agriculture. The area of mixed dry land farming was 1.728,67 ha in the 2013-2018 period and 1.710,74 ha in the 2018-2023 period. Permanent vegetation cover increased by 3.37 ha in the 2013-2018 period and by 4.41 ha in the 2018-2023 period. The average PPV value in 2013, 2018, and 2023 is 24.46% and is included in the bad category.

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