Pencucian Karbon Organik pada Mikro DAS Lahan Perkebunan Kelapa Sawit PT Perkebunan Nusantara VI Jambi:

Ginanjar Ika Septiawan; Eni Dwi Wahjunie; Kukuh Murtilaksono; Yiyi Sulaeman

doi:10.29244/jitl.22.1.16-21

Ginanjar Ika Septiawan Program Studi Ilmu Pengelolaan Daerah Aliran Sungai, Sekolah Pascasarjana, IPB University
Eni Dwi Wahjunie Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian IPB University
Kukuh Murtilaksono Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian IPB University
Yiyi Sulaeman Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

DOI: https://doi.org/10.29244/jitl.22.1.16-21

Keywords: DOC leaching, ion concentration, stream discharge

Abstract

Land use change can affect the ecosystem and regional hydrology. It increase the erosion and surface runoff of the land, especially the land that is not in line with the principles of soil and water conservation. The high rainfall affects the leaching process of carbon and nutrients from agricultural land to the river body. The leaching process of organic carbon and nutrients in the river need to be researched. It predicts the concentration of organic carbon and nutrients in the river, and it can be the indicator in monitoring of the land degradation. This research applied field experiment which used survey method with explorative descriptive for purposive sampling. This study showed that the location of leaching the most organic carbon formed DOC, nitrate, Al³⁺, and Mn²⁺is point C. The rainfall has less significant effect in increasing stream discharge (r = 0.58). Stream discharge and dissolved ion concentration in the outlet (DOC, NO₃^-, PO₄^3-, Fe²⁺, and Al³⁺⁾has no positive correlation. DOC concentration in the river has positive correlation with Fe²⁺ (0.94) and Al³⁺ (0.96). The multi stepwise regression model produces DOC = 2.48 + 0.90 Al³⁺ + 3.17 Fe²⁺ with the quite high value of R² Adj. (0.94). It showed that DOC has affected Al³⁺ and Fe²⁺by 94%.

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Author Biography

Ginanjar Ika Septiawan, Program Studi Ilmu Pengelolaan Daerah Aliran Sungai, Sekolah Pascasarjana, IPB University

Mahasiswa Pascasarjana IPB Program Studi Ilmu Pengelolaan Daerah Aliran Sungai

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Leaching of Organic Carbon in Micro Catchment Oil Palm Plantation Area PT Perkebunan Nusantara VI Jambi