Abstract
Alternatives of vegetations to store carbon need to be encouraged considering that forests are threatened by widespread destructions. One such vegetation is grasslands which have the potential for carbon storage and to reduce CO2 concentration in the atmosphere. At present, many enterprises have designed grasslands for many purposes. Grasslands at Cikalong Wetan and Little Farmers, West Bandung Regency were established under different pattern of plantation stands. The purpose of this research was to study the potential of carbon stock in grassland vegetation at these locations. Based on RaCSA method, the tree biomass was determined by nondestructive collection of density and basal area of trees, then calculated by an allometric equation. The ground cover biomass was determined by destructive collection of grass and roots. Total measured biomass was multiplied by 46% to obtain carbon storage. Based on the results, the potential of carbon stock in Little Farmers grassland (159,540 ton ha-1) is higher than in Cikalong Wetan (14,482 ton ha-1). Carbon stored in tree biomass gives the highest contribution to overall carbon stock potential in Little Farmers (94.84%) while carbon stored in below-ground understorey biomass gives the highest contribution in Cikalong Wetan (52.13 %). Different management of grasslands and pattern of plantation stands resulting a different contribution of carbon stock in every carbon pool. In order to maintain the carbon sequestration potentials of these locations, an agroforestry management such as agri-silviculture need to be encouraged. This study gives a comparison of the carbon sequestration potentials between two man-made grassland ecosystems. For many enterprises this study will aid in a management planning of man-made grassland in terms of ecosystem services, that is carbon sequestration.
Highlights
Natural terrestrial ecosystems give ~25% to CO2 emmisons sequestration, the sustainability of this key ecosystem is under question [1]
Carbon stored in primary highland forests in Indonesia is 103.16 tons/ha with the continued forest destruction, in 2015 to 2016 the deforestation was 0.63 million hectares and in 2017, the extent of deforestation stood at 0.48 million hectares with the most significant deforestation occurred in secondary forests both in and outside of the Forest Area [4]
Little Farmers had an area of 73,005.13 m2, Cikalong Wetan had an area of 1,1704 ha
Summary
Natural terrestrial ecosystems give ~25% to CO2 emmisons sequestration, the sustainability of this key ecosystem is under question [1]. Climate change, and global warming cause a decrease in forest area, which means that they can reduce the forests potential which is expected to store carbon at least 10 times greater than other types of vegetation [2]. Anthropogenic factors which are responsible to forest destruction is still inevitable. FAO recorded that many large scale commercial agriculture and subsistence is responsible to 73% of this planet’s deforestation [3]. Carbon stored in primary highland forests in Indonesia is 103.16 tons/ha with the continued forest destruction, in 2015 to 2016 the deforestation was 0.63 million hectares and in 2017, the extent of deforestation stood at 0.48 million hectares with the most significant deforestation occurred in secondary forests both in and outside of the Forest Area [4]
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