LAJU INFILTRASI PADA BERBAGAI TIPE KELERENGAN DIBAWAH TEGAKAN EKALIPTUS DI AREAL HPHTI PT. TOBA PULP LESTARI SEKTOR AEK NAULI

Abstract

ABSTACT
The objective of this research is know rate of infiltration on several slope. The research was carried out on December 2008 to January 2009 at area of HPHTI PT. Toba Pulp Lestari Tbk. Aek Nauli Sector. The research was use double ring infiltrometer to measure soil infiltration with three replication on each slope. The measurement was done in every five minute. The result of research show that the highest of infiltration rate and infiltration capacity was happened on slope 8-15%, ie 144 cm/hour and 24 cm/hour, while the lowest of infiltration rate and infiltration capacity was happened on slope 25-40%, ie 52 cm/hour and 16 cm/hour.