2020 |
Ramadhan, Rizky; Hermawan, Rachmad; Setiawan, Yudi Estimation of tree carbon stocks based on the typology of region in Depok City, West Java Province Conference SPIE, 2020. Abstract | Links | BibTeX | Tags: carbon stock @conference{Ramadhan2020,Urbanization has triggered an increasing of population rate and the contribution of gas emissions consequently due to of human activities is also increased. Green Open Space (GOS) is a balancer of an urban environment and able to create a microclimate. Research objective is to assess a carbon stock in urban trees according to regional typologies, characteristics and development in Depok City. In this study, the type of area was distinguished into typology of region based on three main criteria, namely: population density, income and road density. Sample of GOS has been selected visually using ARCGIS 10.5 software, then field observation was conducted to collect some supporting data through interview and questionnaire distribution. The results showed that the higher area’s type the value of carbon stock is increasing, and GOS for green belt is the biggest contributor of carbon stock with 5.37 tons / km2. The community and government strongly support the movement of GOS development towards a Low Carbon City so that they need guidance and assistance from experts. |
2019 |
Putri, Hafidzah; Hermawan, Rachmad; Setiawan, Yudi Tree carbon stock estimation model based on canopy density in green open space area Depok City Conference vol. 11372, SPIE, 2019. Abstract | Links | BibTeX | Tags: canopy density, carbon stock @conference{Putri2019,Depok is a city with rapid undergoing economic and infrastructure development in Indonesia. Such increasing growth in infrastructure affected positively to increase the population, and then, it threat an existence of remaining green open areas. Vegetation on green open areas has a role as the carbon storage in forms of trees. This research aim is to find the correlation between tree carbon stock and Leaf Area Index (LAI) in green open space. The method were used vegetation analysis and field measurement to collect diameter data for estimate carbon stock and hemispherical photography to measure the LAI. The result shown that the highest tree carbon stock were located in University of Indonesia City Forest (87.02 ton C/ha) with the highest vegetation index was Falcataria moluccana. The amount of tree carbon stock in Pancoran Mas Forest Park was 13.96 ton C/ha and in Lembah Gurame Park was 6.25 ton C/ha. LAI estimated in University of Indonesia City Forest was between 3.30 – 6.55, Pancoran Mas Forest Park 2.96 – 3.77 and Lembah Gurame Park 1.46 – 2.92. The correlation between the two variables were weak, rxy=0.32 and has polynomial equation C = -2.0874LAI2 + 10.188LAI - 9.5021 with R2= 0.477. |
Rachdian, Azar; Hariyadi,; Setiawan, Yudi; Santoso, Kresno Dwi Carbon stock change dynamics of oil palm plantation in Sembilang Dangku Landscape, South Sumatra Conference vol. 336, IOP Conf. Ser.: Earth Environ. Sci, 2019. Abstract | Links | BibTeX | Tags: carbon stock, oil palm @conference{Rachdian2019,One of the land cover type in the Sembilang Dangku Landscape is oil palm plantation, which is developed by changing the type of previous land covers. Land cover change causes changes in carbon stock. If the carbon stock increase in an area, it means the area acts as a carbon sinker, whereas if the carbon stock decrease, inconsequently the area is a carbon emitter. The purpose of this study was to analyze the dynamics of carbon stock changes in 1997-2007 and 2007-2017. The research was carried out on six private oil palm plantations. Carbon stocks were estimated based on the type of land cover interpreted from Landsat 5 imagery with the unsupervised method by using Las Palmas QGIS 2.18.0 Software. Determination of land cover in 1997 was based on the year when oil palm plantation began. Carbon stock of oil palm plantation was estimated based on the Normalized Difference Vegetation Index (NDVI) with the equation: Y = 638.13 X - 242.65 (Y = carbon stock, X = NDVI). The value of carbon sequestration or carbon emission were based on carbon stock changes. The types of land cover in 1997 and 2007 were in the form of shrub swamp, oil palm plantation, undisturbed peat swamp forest, disturbed peat swamp forest; while in 2017 land cover was dominated by oil palm plantation. The results showed respectively that carbon stocks in 1997, 2007 and 2017 were 3,333,549.6 tonC, 1,541,825.5 tonC, and 1,626, 951.8 tonC. In 1997-2007, carbon stock encountered a decrease, resulting in carbon emission of 18.68 tonCO2-eq/ha/year. However, in 2007-2017, carbon stock encountered an increase, leading in carbon sequestration of 0.89 tonCO2-eq/ha/year. |
2020 |
Estimation of tree carbon stocks based on the typology of region in Depok City, West Java Province Conference SPIE, 2020. |
2019 |
Tree carbon stock estimation model based on canopy density in green open space area Depok City Conference vol. 11372, SPIE, 2019. |
Carbon stock change dynamics of oil palm plantation in Sembilang Dangku Landscape, South Sumatra Conference vol. 336, IOP Conf. Ser.: Earth Environ. Sci, 2019. |
