Penilaian Hidrofobisitas Gambut Obrogen Pontianak akibat Variabilitas Muka Air Tanah dan Penggunaan Lahan=Hydrophobicity Assessment of Ombrogenous Peat Soils from Ponttanak Effect by Variability of Ground Water Table and

• Main Author: Perpustakaan UGM, i-lib
• Format: Article NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2005
• Subjects: Jurnal i-lib UGM
• Online Access: https://repository.ugm.ac.id/17387/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=139
• Institution: Universitas Gadjah Mada

ABSTRACT Ombrogenous peats were formed as result of the accumulation the organic residues that was faster than the rate of its decomposition, particularly in high rainfall area. Descendance of ground water table caused soil to drain. Abundant draining, for example in dry season or land clearing as an agriculture land, caused the peat became irreversible drying. Later then, peat would be hydrophobic and would also changed of its physical, chemical and biological characteristics. At one particular land, the characteristics of the soil at nearby place may be the same while at which farther place may be different (spatial dependency). Therefore, this research was aimed to know the relationship of variation of the depth of ground water table and land usage with the hydrophobicity of the peat soil. This research was conducted at two different locations i.e. natural peat and cultivated peat located in Sub-District of Bangka Belitung of Pontianak City, West Kalimantan Province. The results indicated that the management of agriculture traditionally and rainfall intensity during this research was able to maintain the hydrophilic of the peat. Land management traditionally could maintain the inherent characteristics of peat soils. Ground water table shallowed in rainy season conversely in dry season. Variability of depth of ground water table and properties of soil still was lower and its value disseminate random. Keywords: peat - ground water table - hydrophobicity and land management.