Kerapatan dan Pola Zonasi Vegetasi Mangrove di Desa Wonosari Kecamatan Panai Hilir Kabupaten Labuhanbatu

Abstract

Indonesia has the world's largest mangrove forest, covering 3.2 million hectares, or 22.6% of all mangrove forests, and the results of updating the National Mangrove Map in 2021 are 3,364,080 hectares. One of the mangrove ecosystems in Wonosari Village, Panai Hilir, Labuhanbatu Regency is being studied to determine the density distribution and establishment of each zone. The objective of this research is to examine the density distribution of mangrove vegetation between 2002 and 2022, as well as the formation of mangrove vegetation in Wonosari Village, Panai Hilir District, Labuhanbatu Regency. This study employed the Normalized Difference Vegetation Index analysis with Landsat imagery, as well as the Important Value Index analysis with vegetation analysis. The results obtained are the density of vegetation in 2002 and 2022 which has the largest Normalized Difference Vegetation Index area, namely in 2002 in the form of a dense class with a Normalized Difference Vegetation Index value range of 0.3 - 0.4 with an area of 415.61 Ha or 67.23% and in 2022 in the form of a meeting class with an area of 495.53 Ha or 80.16%. Between 2002 and 2022, the dense vegetation density climbed by 79.92 Ha, whereas the extremely thick vegetation density decreased by 111.80 Ha. The mangrove vegetation formation at the study site was divided into three zones, including the open zone, which contained Rhizophora mucronata, Bruguiera parviflora, and Avicennia alba. Rhizophora mucronata and Bruguiera parviflora were discovered in the intermediate zone, and Xylocarpus granatum, Acrostichum aureum, and Excoecaria agallocha were discovered in the back zone, which is on the mainland.