STUDI KEPADATAN, ERODIBILITAS DAN KEMANTAPAN AGREGAT TANAH ANDISOL AKIBAT PERUBAHAN TATAGUNA LAHAN DI HULU DAS BATANG MERAO

Abstract

Abstract
Changes in land use of forest into agricultural land caused land degradation, decreasing land hydrological functions. This research was carried out in Batang Merao upstream watershed in the highlands of Kerinci Region in Jambi. The objective of this study was to investigate the effects of representative land-use and land-cover types of largely deforested areas of Batang Merao upstream watershed on soil properties. . Four major land uses were included; mix garden, cinnamom (10 years old) ), tea (50 years old) and natural forest used as a control. Each of these land-uses were selected at four land unit. We measured these effects by quantifying some soil analyses were done on soil samples were taken at 0-20 cm. According to the results of soil analysis: soil organic matter (SOM), soil water content, bulk density (BD), soil porosity, soil organic carbon (SOC), saturated hydraulic conductivity (K sat), soil erodibility, significantly change with land use type. This research gains the results that: the landuse change causes the change of soil organic matter, soil organic carbon, soil compaction, and water content, the increasing of soil erodibility, and causes the declining of size agregation and water stable aggregates.
Key Word : compaction; erodibility; stability agregate