The impact of landuse and the relationship between NDVI on the bird species richness in Sukmajaya District, Depok

Abstract

A high human population increase will affect the landuse change, and as a result, there will be a conversion of green areas into residential and industrial lands. The natural habitat of wildlife such as avifauna will be highly fragmented and even lost. This research was conducted in Sukmajaya District, which was the most densely populated sub-district in Depok City. Normalized Differences Vegetation Index (NDVI) can show the vegetation map of an area. Sukmajaya sub-district is dominated by residential areas, about 62.1 % of the total area of this sub-district is residential area and leaving only 21.2 % of the vegetated land fragmented by buildings as habitat for wildlife. Therefore, it is necessary to conduct research on how different landuse types affect avifauna species richness which is important as input for stakeholders in avifauna conservation efforts. The research was conducted by using point count method in a total of 37 observation points divided into residential areas, industrial areas, and vegetated lands. The results of this study indicated that the correlation between landuse and avifauna species richness can be explained by the characteristics of the landuse habitat. Using linear regression, all habitat characters, such as NDVI, total individual vegetation, number of vegetation types, canopy cover, human activity disturbance, and temperature can simultaneously predict the value of the Margalef species richness index. The number of vegetation types and canopy cover are the characters that most influence the avifauna species richness in this study.