Abstract
Intergrated Forest for Conservation Education of Wan Abdul Rachman (IFCE WAR) Great Forest Park is a conservation forest zone which has natural area and cultivated area. The natural area in Wan Abdul Rachman Great Forest Park consists of secondary forest, whereas the cultivated area consists of agroforestry with cacao plants and agroforestry with coffee plants. The different land use in both areas caused the difference in carbon sink specifically in litter and soil. The research was aimed to study the difference of litter and soil carbon stock in natural and cultivated area in IFCE WAR Great Forest Park. The observation plots included in the current study was determined using purposive sampling method. The research was conducted in June until August 2015. Data was analyzed using analysis of variance and continued with honestly significant difference test. The results showed that there was no difference of litter carbon stock in cultivated area and natural area in IFCE WAR Great Forest Park, whereas the soil carbon stock in natural area was higher than that in cultivated area.
Highlights
Increasing population has led to an increase of food production
The objectives of the study were to determine the effect of soil amelioration on peat soil chemical properties, to determine the effect of temperature of combustion of ameliorant trass and dolomite on the availability of silica in peat soil, and to determine the effect of soil amelioration on increasing crop productivity
The decomposition of woody materials rich in lignin in the peat soil occurs in an anaerobic state, producing aliphatic acids and phenolic acids in which most of these acids are toxic to plants (Kononova 1968; Tsutsuki dan Ponnamperuma 1987, Tsutsuki dan Kondo 1995)
Summary
Increasing population has led to an increase of food production. The peatland utilization for agricultural development faces many limiting factors such as acidity, low base saturation, organic acid toxicity, and nutrient deficiency. Tadano et al (1990) and Prasetyo (1996) reported that the low productivity of peat soils is mainly due to the high content of organic acids, which are toxic to plants, especially the derivatives of phenolic acids. Ameliorant has an important role on improving peat soil fertility such as increasing soil pH, reducing the amount of organic acids and toxic ions, and increasing nutrients availability (Attiken et al 1998). Soil amelioration with polyvalent cations (Fe, Al, Cu, and Zn) using slag, lateritic soils, and river mud effectively reduces harmful effects of phenolic acids (Sabiham and Ismangun 1997; Salampak 1999)
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