Normalized difference vegetation index (ndvi) analysis for land cover types using landsat 8 oli in besitang watershed, Indonesia

Friendly City 4 'From Research to Implementation For Better Sustainability'

地球科学;经济学

Zaitunah, A.^1 ; Samsuri, S.^1 ; Ahmad, A.G.^1 ; Safitri, R.A.^2

Forestry Management Department, Forestry Faculty, Universitas of Sumatera Utara, Medan

20155, Indonesia^1

Forest Cnservation Departemen, Forestry Faculty, Universitas of Sumatera Utara, Medan

20155, Indonesia^2

关键词: Dense vegetation;    Land-cover types;    Mangrove forest;    Normalized difference vegetation index;    Remote sensing technology;    Vegetation density;    Vegetation index;    Watershed areas;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/126/1/012112/pdf
DOI  :  10.1088/1755-1315/126/1/012112

来源: IOP

【 摘 要 】

Watershed is an ecosystem area confined by topography and has function as a catcher, storage, and supplier of water, sediments, pollutants and nutrients in the river system and exit through a single outlet. Various activities around watershed areas of Besitang have changed the land cover and vegetation index (NDVI) that exist in the region. In order to detect changes in land cover and NDVI quickly and accurately, we used remote sensing technology and geographic information systems (GIS). The study aimed to assess changes in land cover and vegetation density (NDVI) between 2005 and 2015, as well as obtaining the density of vegetation (NDVI) on each of the land cover of 2005 and 2015. The research showed the extensive of forest area of 949.65 Ha and a decline of mangrove forest area covering an area of 2,884.06 Ha. The highest vegetation density reduced 39,714.58 Ha, and rather dense increased 24,410.72 Ha between 2005 and 2015. The land cover that have the highest NDVI value range with very dense vegetation density class is the primary dry forest (0.804 to 0.876), followed by secondary dry forest (0.737 to 0.804) for 2015. In 2015 the land cover has NDVI value range the primary dry forest (0.513 to 0.57), then secondary dry forest (0.456 to 0.513) with dense vegetation density class.