Carbon stocks of Petungkriyono mixed forest as climate change mitigation

Abstract

The Petungkriyono forest covers 53.88 km2 at Pekalongan Regency with 54.6% composition of mixed forest (29.43 km2). This study aimed to estimate above-ground biomass and carbon stocks from five villages; Tlogopakis, Tlogohendro, Kayupuring, Yosorejo and Kasimpar. Non-destructive samples of 30 plots were conducted by designing plots with 0.04 ha and stand inventory involving diameter at breast height, height and number of trees. The result showed that the total estimated biomass from five villages was 3,006.10 Mg ha-1 and carbon stocks were 1,442.93 Mg C ha-1. The averages of biomass and carbon stocks were 601.22 Mg Ha-1 and 288.59 Mg C ha-1. This indicates that 2,943 ha area of Petungkriyono mixed forest has carbon stocks capacity up to 1,769,390.46 Mg C. The highest above-ground biomass contribution 59% tree compared with 41% poles. The significantly higher above-ground biomass describes higher carbon stocks long term storage of CO2 to either mitigate or defer global warming. Climate change mitigation from carbon stocks can be obtained from CO2 equivalents if well managed. Petungkriyono mixed forest may have considerable potential for mitigating climate change by carbon sequestration.

Biodiversity in Lower Montane Forest of Petungkriyono: A Review

“…With an area of 7,359 hectares, it is situated in the southeast of the district, around 34 kilometers from Pekalongan, the district capital. Compared to other sub-districts in the Pekalongan district, this one has the lowest temperature (18-30 °C) (Damayanti et al, 2021a;Pradana et al, 2020). This is because the area is mostly covered in forests and has a high altitude of approximately 1,294 meters above sea level (BPS Pekalongan Regency, 2023).…”

“…It is situated between 700 and 1500 meters above sea level (masl). (Damayanti et al, 2021a). According to some (Damayanti et al, 2021b(Damayanti et al, , 2018, Petungkriyono is the last remaining high biodiversity tropical forest in Java.…”

“…Its density is relatively high and continuous, and its altitude is appropriate for the environment (Nofiyani & Nugroho, 2016). The height of the trees that make up Sokokembang's vegetation is ideal for sleeping trees and cover trees for the Javanese Owa, as evidenced by the huge diameter trees that were discovered there (Damayanti et al, 2021a).…”

Formulating the Direction of Community Land Use to Support the Conservation of Javanese Gibbon (Hylobates moloch) Habitat at Petungkriyono, Central Java

“…On the other hand, there is potential for production forests in the form of Pinus merkusii, Sengon and Aren (Arenga pinnata) which are cultivated on community-owned lands. Based on the study of [6], it is possible that the Petungkriyono mixed forest has a significant potential for reducing the effects of climate change by sequestering carbon due to its carbon stocks capacity up to 1,769,390.46 Mg. Moreover, [7] conducted a study to calculate the total economic value of Petungkriyono forest and found that the entire economic value of water value, landslide prevention structures, and carbon sequestration is IDR.163.065.858.080, and the Extended Benefit Cost Ratio in Petungkriyono is 281.35%.…”