Abstract
This study aimed to determine the amount of carbon stock and CO2 plant uptake in the Integrated Field Laboratory (IFL) Faculty of Agriculture University of Lampung. The research was conducted from April to November 2015. The study was arranged in a completely randomized block design (CRBD), consisting of five land units as treatment with four replications for each treatment. Biomass of woody plants was estimated using allometric equation, biomass of understorey plants was estimated using plant dry weight equation, and organic C content in plants and soils were analyzed using a Walkey and Black method. The results showed that land unit consisting of densely woody plants significantly affects total biomass of woody plants, organic C content in woody plants and total carbon content (above and below ground). The highest amount of woody plant biomass was observed in land unit 5, i.e. 1,196.88 Mg ha-1, and above ground total carbon was 437.19 Mg ha-1. IFL Faculty of Agriculture University of Lampung has a total carbon stock of 2,051.90 Mg and capacity to take up total CO2 of 6,656.88 Mg.
Highlights
Forest plays an important role, among others, as a source of carbon stock in nature, in which carbon is stored as vegetative biomass and soil carbon
The highest amount of woody plant biomass was observed in land unit 5, i.e. 1,196.88 Mg ha-1 and the lowest amount of biomass was found in land unit 2, i.e. 237.43 Mg ha-1
The amount of plant biomass is determined by the number of stands and the number of population of woody plants in a land unit, land unit 5 with slope of 30 – 45% is rarely used for cultivation for both practicum and research, as a result the population of woody plants in land unit 5 is abundant and diverse, and the predominant plant species observed is woody plants
Summary
Forest plays an important role, among others, as a source of carbon stock in nature, in which carbon is stored as vegetative biomass and soil carbon. Conversion of forest into other land uses has led an increase of CO2 emission into atmosphere, which is derived from biomass burning and mineralization of soil organic carbon during. Suggested that climate change is caused by an increase of greenhouse gases (GHG) concentrations, such as CO2, N2O, CH4, CO, etc. Intergovernmental Panel on Climate Change (IPCC 2007) reported three major greenhouse gases, namely CO2, CH4, and N2O, since their concentrations in atmosphere are increasing up to twofold recently (Hairiah 2007). At this moment, the amount of carbon dioxide in atmosphere has been enormous, which is about 1,305. If the global warming goes on, it may cause major disaster worldwide (Apps et al 2003)
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