Comparison of chemical properties on peat swamp soil before and after timber harvesting in Sibu forest

Salimin, Muhamad Ismawi (2009) Comparison of chemical properties on peat swamp soil before and after timber harvesting in Sibu forest. [Project Paper] (Submitted)

Text lpFSPM2009 70 - MUHAMAD ISMAWI B SALIMIN.pdf Download (3MB)

Abstract

Sarawak has a large area of peat in Malaysia. This study was conducted to determine the comparison of chemical properties based on soil acidity, cation exchange capacity (CEC), soil organic matter (SOM), total carbon, total nitrogen, total phosphorus, available potassium and C:N ratio, before and after timber harvesting on tropical peat swamp forest. Peat soil samples were taken at 0-15 cm dept on 6 plots with 0.1 hectare each plot at Batang lgan forest in Sibu Sarawak, Malaysia. The soil samples were analyz.ed for soil acidity, cation exchange capacity, soil organic matter, total carbon, total nitrogen, total phosphorus and available potassium. Data was analyzed by using Unpaired T-test, Statistical Analysis System (SAS) version 9.2. The tropical peat swamp forest indicate its specific natural state such as rich in soil pH KCl and C:N ratio were not significant, soil pH water, cation exchange capacity, soil organic matter, total carbon, total nitrogen, total phosphorus, and available potassium were significant different between before and after timber harvesting. This tropical peat swamp forest also acidic soil in range 3.2 - 4.0 % and had large amounts of total carbon (before 48.85 %, after 48.30 %), low CEC (before 68.04 cmoVkg, after 46.17 cmoVkg), high soil organic matter content (before 97.70 %, after 96.59 %), low mineral nitrogen (before 0.79 %, after 1.18 %), and high C:N ratio (before 74.04 %, after 53.25 %) low phosphorus (before 219.20 mg/L, after 312 mg/L) and low available K (before 330.60 mg/L, after 613.90 mg/L). The low nitrogen and phosphorus suggests that this peat swamp forest typically represent shallow peat. This study found that the comparison before and after of some parameter were significant different, such as pH-water, CEC, SOM, total C, total N, total P and available K. Meanwhile, some parameter are not significantly different, such as pH KCi and C:N ratio.

Item Type:	Project Paper
Subjects:	S Agriculture > SB Plant culture
Faculty:	Faculty of Agriculture and Food Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	19 Nov 2025 07:51
Last Modified:	19 Nov 2025 07:51
URI:	http://psaspb.upm.edu.my/id/eprint/2450

Actions (login required)

View Item