Diversitas Makrofauna Tanah pada beberapa Tingkat Kemiringan Lereng di Lahan Kemiri (Aleurites moluccana (L.) Willd.), Kabupaten Karo.

Abstract

Candlenut is a conservation plant with numerous benefits and economic value. It is typically cultivated on highland areas with varying slope gradients. This study aims to investigate soil macrofauna diversity in candlenut plantations with slope gradients of 7–15% (flat), 15–30% (steep), and 30–70% (very steep). This study was conducted from December 2024 to April 2025 using a quantitative descriptive survey method. Samples were collected using pitfall traps and monolith squares, with plots placed at three locations. Location I was an area of candlenut plantations with a slope gradient of 7-15% (flat), Location II was an area of candlenut plantations with a slope gradient of 15-30% (steep), and Location III was an area of candlenut plantations with a slope gradient of 30-70% (very steep). The results showed that Location I, a candlenut plantation with a slope gradient of 7–15% (flat), consisted of 2 phyla, 5 classes, 8 orders, 13 families, and 14 species, with a total of 196 soil macrofauna individuals. Location II on candlenut plantation with a slope gradient of 15-30% (steep) consists of 2 phyla, 3 classes, 6 orders, 10 families, and 11 species, with a total of 181 soil macrofauna. Location III on candlenut land with a slope gradient of 30–70% (steep) consists of 2 phyla, 3 classes, 6 orders, 9 families, and 10 species, with a total of 132 soil macrofauna individuals.