Analisis Pola Spasial Persebaran Pohon Sarang Orangutan (Pongo abelii) di Kawasan Restorasi Halaban Resort Sei Betung Kabupaten Langkat

Abstract

Nests are a key element in Orangutan ecology, serving as a resting, breeding, and protection place. In Orangutans, nests are one of the most important evidences to see their presence in an area. This study aims to analyze the spatial pattern of the distribution of Orangutan nest trees (Pongo abelii) in the Halaban restoration area, Sei Betung Resort, Langkat Regency, as an effort to support Orangutan habitat conservation strategies. This study was conducted in January 2025. Based on the results of the study, 29 Orangutan nest points were found at the research location. Modeling was carried out using the Maximum Entropy (MaxEnt) method to predict the suitability of Orangutan nest habitat. The results showed that the elevation factor contributed the most to habitat suitability (44.1%), followed by distance from the river, slope, land cover, and Normalized Difference Vegetation Index (NDVI). The Area Under Curve (AUC) value of the suitability of Orangutan nest tree habitat was 0.837 which can be classified as a good model. The distribution of nest trees tends to cluster (Crowd) in certain areas. The nest trees found were mostly also food trees, confirming the close relationship between nest location and food resource availability.