Yulnafatmawita, Yulnafatmawita and Hermansah, Hermansah and Saidi, Amrizal
(2011)
Impact of Land Use Change on organic Matter Content and physical properties of soil in Bukik Pinang-Pinang under Tropical Rainforest, Mount Gadut West Sumatra.
In: Semirata BKS-PTN Barat, 23-25 May 2011, Palembang.
Abstract
A study about soil organic matter variation and soil physical properties as affected by land use change had been conducted in in Bukik Pinang-Pinang, tropical rain forest area. The area is located approximately 30 km from Padang city (100°29’40”-100°30’20” E and 0°54’55”-0°55’45” S), with altitude 380-640 m asl. This area is known as the wettest part in Indonesia, even in the world, due to its high annual rainfall which is up to 6500 mm/y. The water flows down to Padang city through Batang Kuranji, one of the biggest rivers passing the city. Bukik Pinang-Pinang and the surroundings function as hydrology regulator for the down environment, therefore it must be well-managed. The objective of the research was to determine soil organic matter content and physical properties at three different types of land use in Bukik Pinang-Pinang. Soil organic matter content of non-forest land use (mixed trees and bush land) tended to be higher than forest ecosystem. Furthermore, soil texture on the forest and bush land was finer than on mixed perennial trees. Bulk density and total porosity of the soil was categorized as medium, and permeability was considered as fast for each land use.
Keywords: Rain forest, land use change, soil organic matter content, soil physical properties
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