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Problem Statement: Forest clearing in Tropical Peat Swamp Forest (TPSF) will affect&#13; forest soil carbon storage. Thus this study is essential to determine whether the effect of clearing of&#13; forest does to the nature of soil forest concentrating on soil carbon storage. The objectives of this&#13; study were to analyze carbon storage values in logged and clear cut TPSF and to compare these values&#13; to see whether clearing of forest will affect its soil in terms of carbon storage. Approach: Soil&#13; sampling was conducted in July 2009 on two different plots at Batang Igan, Sibu, Sarawak, Malaysia.&#13; The plots are secondary TPSF where this area has been logged but not been cleared while another plot&#13; is the clear cut area where the forest has been cut down and cleared for other land use. Soil samples&#13; were taken in each plot in the depth of 0-15 cm. Every sample was taken randomly by peat auger&#13; using bulking method. The soils were air dried, pounded using mortar and sieved. The bulk densities&#13; were determined by coring method. Total Carbon (TC), total Organic Matter (OM), Total Nitrogen&#13; (TN) and stable C estimation per hectare were determined from bulk density. The soil pH was&#13; determined using pH meter by using water and KCl. SOM, TC and stable C in Humic Acid (HA) were&#13; determined by loss-on ignition method. TN was determined using Micro-Kjeldahl method followed by&#13; steam distillation and titration. HA was extracted and purified using distilled water. Then, the HA&#13; were oven dried in 40oC. The E4/E6 ratio by using spectrometer was used. Total acidity of HA which&#13; consists of carboxylic (-COOH) and phenolic (-OH) functional group were analyzed. The statistical&#13; analysis and comparison was using t-test to compare between two means. Results: The variables that&#13; showing the significant differences between two plots were pH water and KCl, soil OM, total C and&#13; HA yield. The insignificant differences were bulk density, total N, C/N ratio, E4/E6, phenol, carboxyl,&#13; total acidity and stable C. Conclusions: There is no significant difference between clear cut and TPSF&#13; in terms of carbon storage although TPSF had higher HA

Effect of Tropical Peat Swamp Forest Clearing on Soil Carbon Storage