Amount Of Carbon Stock Research Articles

Application of Remote Sensing and Developed Allometric Models for Estimating Wood Carbon Stocks in a North-Western Miombo Woodland Landscape of Tanzania

Quantifying ecosystem carbon stocks is vital for understanding the relationship between changes in land use and cover (LULC) and carbon emissions; however, few studies have documented the impacts of carbon cycling on Miombo ecosystems. Here, we estimate the amounts of wood carbon which is stored and lost as a result of LULC changes in Kagoma Forest Reserve (KFR) for the periods between 1988 and 2010 using GIS data, Landsat imagery, and field observations. The land cover was captured on the basis of Landsat 5 TM and Landsat 7 ETM. The amounts of wood carbon stored and lost were estimated based on four previously developed allometric models. Spatial analysis of the Landsat images shows that in the year 1988, woodlands dominated the area by covering 32.66% whereas in the year 2010 the woodlands covered only 7.34% of the total area. The findings of the current study reveal that KFR had undergone notable changes in terms of LULC for the period of 1988–2010. It was estimated that the woodlands in the KFR lost an average of 4409.79 tCyr-1. In this study, the amount of carbon stocks stored was estimated to be 21457.02 tonnes in tree stem biomass based on the area (1226.12 ha) that was covered by woodlands. We estimated that an average of 17.79 tCh-1was stored in the Miombo woodlands based on the four models. The efforts to ensure sustainable management of the Miombo ecosystem can contribute to the creation of a considerable carbon sink.

Manejo post incendio de bosques mediterráneos: almacenamiento de carbono en áreas regeneradas en el este de la Península Ibérica

El manejo de las masas forestales incendiadas debe incluir un seguimiento desde el primer momento tras el incendio, optimizando la implementación de medidas urgentes que aseguren unas condiciones mínimas para la regeneración natural del ecosistema. Sin embargo, ante una regeneración excesiva, se deben plantear tratamientos selvícolas tempranos como apoyo a la recuperación del ecosistema. En este trabajo se discuten los efectos del clareo temprano en dos zonas incendiadas y regeneradas de manera natural situadas en el este peninsular, una en el sur de Albacete con masas de pino carrasco (Pinus halepensis Mill.) quemadas en el verano de 1994, y otra al este de Cuenca, con masas de carrasca (Quercus ilex L. ssp. ballota (Desf.) Samp), quemadas repetidamente en los veranos de 1993 y 2001. El objetivo de este estudio es monitorizar la recuperación de biomasa y el almacenamiento de carbono de estas masas naturales, mediante muestreo directo en campo y por cálculo de existencias obtenidas de bases de datos públicas. El método directo mostró que la disminución del carbono almacenado en las especies estudiadas fue debido a la reducción inicial del número de árboles, que en los encinares no se había recuperado totalmente en 2010 (dos años después del tratamiento y nueve tras incendio). En 2010, dieciséis años después del incendio y seis tras el tratamiento silvícola, obtuvimos que en el pinar, los clareos de alta intensidad mejoraron la capacidad de la masa arbórea para almacenar carbono. Además, los valores de carbono almacenado en la biomasa arbórea en áreas no tratadas eran comparables a los valores del Tercer Inventario Forestal Nacional. Por tanto, se pone de relieve el interés del uso de la implementación de esta herramienta de manejo selvícola en un manejo forestal adaptativo y se propone la inclusión de masas jóvenes en regeneración dentro de los cálculos de almacenaje de carbono, al menos a niveles provinciales y regionales.

<b>MODEL PERUBAHAN PENGGUNAAN LAHAN DAN PENDUGAAN CADANGAN KARBON DI DAERAH ALIRAN SUNGAI CISADANE, JAWA BARAT</b><br><i>LANDUSE CHANGE MODEL AND CARBON STOCK ESTIMATION IN CISADANE WATERSHED, WEST JAVA</i>

<div>Land use and land cover in Cisadane Watershed are very vulnerable to switch over, which is caused by the </div><div>high rate of population growth. Land use and land cover change cause the carbon stock changes. These changes were analysed using the logistic regression models, and in this analysis we used land use maps in 2001 and 2006. As many as 44 regression equations were developed with various values of determination coefficient (R</div><div>2</div><div>); 14% of the R</div><div>2</div><div> was less than 0.50, 29% was between 0.50 and 0.75, and 57% is than 0.75. Statistically, there were 31 equations suitable to generate landuse map in 2010, 2015, 2020, and 2025. The amount of carbon stocks in Cisadane Watershed until the year 2025 tend to decrease, so the sum of carbon emissions in the atmosphere increased. This was mainly due to conversion of forest area into other landuse types. Land use and land cover in Cisadane Watershed are very vulnerable to switch over, which is caused by the high rate of population growth. Land use and land cover change cause the carbon stock changes. These changes were analysed using the logistic regression models, and in this analysis we used land use maps in 2001 and 2006. As many as 44 regression equations were developed with various values of determination coefficient (R2); 14% of the R2 was less than 0.50, 29% was between 0.50 and 0.75, and 57% is than 0.75. Statistically, there were 31 equations suitable to generate landuse map in 2010, 2015, 2020, and 2025. The amount of carbon stocks in Cisadane Watershed until the year 2025 tend to decrease, so the sum of carbon emissions in the atmosphere increased. This was mainly due to conversion of forest area into other landuse types. </div>