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Title:	Evaluation of carbon sequestration potential of soil in Berembun and Kenaboi Forest Reserves, Negeri Sembilan, Malaysia
Authors:	Abdullahi Ahmed Chinade (P64504)
Supervisor:	Chamhuri Siwar, Prof. Emeritus
Keywords:	Forests and forestry -- Malaysia Forests and forestry -- Economic aspects -- Malaysia Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	11-Apr-2016
Description:	The carbon stock and sequestration potential of Malaysian forest soils are largely under studied. This has implication on forest management, accurate reporting of the national carbon inventory and undermines achievement of national policy priorities. This study examines the biophysical and economic potentials of carbon sequestration in the soils of natural, disturbed and managed forest types located in and around Berembun (BFR) and Kenaboi Forest Reserves (KFR), Negeri Sembilan, Malaysia. Soil samples were collected in the field and analysed in the laboratory for bulk density, soil organic carbon (SOC) and physico-chemical properties using standard methods. Future SOC stock was simulated with the RothC 26.3 carbon simulation model by using projected climate data (temperature, rainfall and evaporation (2013-2095)) generated using PRECIS HadCM3Q based on the SRES A1B scenario. The net change in SOC was obtained by calculating the difference between the measured SOC stock at baseline and the modelled values after each forest cutting cycle. The economic value of SOC was determined by multiplying the SOC stock in each forest strata with the prevailing carbon price in the compliance market as of 2013. The carbon sequestration potential of forest protection, reforestation and managed plantation options was evaluated using the space-for-time substitution method. The results show that the soils exhibit typical characteristics of ultisols; developed from kaolinite-based minerals and granite parent materials. The predominant textures were sandy clay (in BFR) and silty clay (in KFR). The soils are also well drained, mature and poorly fertile. The average SOC stock, to 1m depth, in BFR is 79.74 (±14.7) t C ha-1 and 60.4 (±22.1) t C ha-1 in KFR. The average SOC, to 1m depth, in all the plots in the study area (i.e. Both BFR and KFR) is 75.87 (±17.0) t C ha-1. The SOC stock in BFR was higher in unlogged forest, followed by logged forests and then Rubber Smallholder. In KFR, the rehabilitated forest contained more SOC than the degraded forest. Soil carbon modelling results show that SOC stock will slightly increase over 30 years, but declines below the baseline value after the three cutting cycles in both BFR and KFR. SOC will be significantly negatively affected by changes in temperature and rainfall over the simulation period in the study areas. Plots in BFR have the highest economic value at an average RM 2,158.45 t CO2eq ha-1 (equivalent to RM 156.45 tC ha-1) while the plots in KFR have an economic value RM 1,677.19 t CO2eq ha-1 (equivalent to RM 122.56 tC ha-1). The average economic value of SOC in the study area (i.e BFR and KFR combined) is RM1,965.95 t CO2eq ha-1 (equivalent to RM142.50 tC ha-1). The findings from this study also reveal that a forest protection scheme will potentially sequester 8.32 t C ha-1 (valued at RM 166.4/ t C ha-1). Similarly, a reforestation scheme will sequester 7.50 t C ha-1 (valued at RM 150/ t C ha-1). However, managed plantation option would lead to a net C loss of -12.88 t C ha-1 (valued at RM - 257.6/ t C ha-1). It is predicted that climate change will negatively affect the carbon sequestration potentials of the soils in the study area in the future. The information generated on soil carbon stock, sequestration potential and economic value from this study is significant and may lead to increase in the forest carbon reported in national carbon inventories and may also help in forest management and policy formulations.,“Certification of Master's/Doctoral Thesis” is not available,Ph.D.
Pages:	241
Call Number:	SD235.M37C485 2016 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Institute for Environment and Development / Institut Alam Sekitar dan Pembangunan (LESTARI)

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