Nutrient content of water at different landuse in peatland in central Kalimantan, Indonesia

Research on water in four different landuse in peat swamp area in Kalampangan Central Kalimantan, Indonesia was carried out and water was sampled every one month from May 2018 to April 2019 and analyzed for pH, soil electrical conductivity (EC) and total content of Ca and Mg. Aim of the research is to obtain the different in nutrient concentration in different land use. Methods, six permanent locations in each land use were used to gather water samples. The landuse were established in (a) Peat swamp forest (b) Jelutung forest (c) Agriculture area and (d) Oil Palm. Water samples were taken at 100 cm below the surface at each peatland site. Result show that water in Forest is very acid with average pH (4.24 ±0.48), Jelutung forest (4.68 ±0.33), Agriculture area (4.69 ±0.62), and Oil Palm 4.67 ±0.38). Soil Electrical Conductivity (EC) in Forest is the lowest with average 0.32 ±0.11 mS.cm -1, Jelutung forest (0.56 ±0.36), (c) Agriculture area (0.93 ±0.52), and (d) Oil Palm (0.52 ±0.19), Similary to Soil Electrical Conductivity (EC), Ca content in water in Forest is the lowest with average 8.20 ±4.54 mg.l-1, Jelutung forest (19.72 ±10.42), (c) Agriculture area (23.60 ±11.54), and (d) Oil Palm (17.45 ±8.27). Mg content in water in Forest is the lowest with average 0.51 ±0.40 mg.l- 1, Jelutung forest (0.93 ±0.47), (c) Agriculture area (2.77 ±1.57), and (d) Oil Palm 0.82 ±0.59). The highest nutrient cotents of Ca and Mg in water was Agriculture area and the lowest in Forest area. Furthermore, nutrient contents of water at each landuse during dry season was higher than wet.