Komposisi Komunitas Makrofauna Tanah untuk Memantau Kualitas Tanah secara Biologis pada Areal Perkebunan PTPN II Sampali Kecamatan Percut Sei Tuan

Abstract

The research of Community Composition of Soil Macrofauna To Observe Of Soil Quality Biological In PTPN II Sampali Area In District Percut Sei Tuan has been done on February until March 2009. The Research location was did in three location, the first location was tobacco area, second location was sugarcane area, and third location was underbrush. Each location used fifteen sampling plots or repeat plots by purposive random sampling method, In each location used two methods by settled up Pit fall Trap and Quadratic methods. Sample was identified in Laboratory of Animal Systematic Faculty Mathematics and Science, University of North Sumatera. Based on the research has been done get 5 classes, 12 ordos, 15 families, and 18 generas. The highest density of soil macrofauna and the highest relative density of soil macrofauna was from genera Irydomyrmex that 126,80 individu/m2 and 50,96% and the highest present frequency was 93,33% from genera Gryllus 1 that found in second location (sugarcane area).