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Comparison of Biomass and Carbon Sequestration of RRIM 600 Rubber Trees at 6, 10, and 19 Years Old in Moo 7, Thung Kai Subdistrict, Yan Ta Khao District, Trang Province
Organization(s):Wichienmatu
Country:Thailand
Student(s):Miss Nattawadee Thongkliang
Miss Padnaree Yaowachinakorn
Miss Patarawadee Sudpai
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Jiraporn Sirirat
Contributors:
Report Type(s):International Virtual Science Symposium Report
Protocols:Dissolved Oxygen, Nitrates, pH, Salinity, Water Temperature, Soil Characterization, Soil Moisture - Gravimetric, Soil pH, Soil Temperature
Presentation Poster:
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Language(s):English
Date Submitted:03/06/2025
This study aims to examine the soil's effect on biomass, carbon sequestration, and carbon dioxide absorption of RRIM 600 rubber trees at 6, 10, and 19 years of age in Moo 7, Thung Kai Subdistrict, Yan Ta Khao District, Trang Province. A 10×10 meter study plot was established, and measurements were taken for soil temperature, pH, moisture content, and soil fertility (N, P, and K levels). Biomass was analyzed using the allometric equation developed by Ogawa et al. (1965) to compare the carbon sequestration of RRIM 600 rubber trees.
The results showed that the 19-year-old RRIM 600 rubber plantation had a total biomass of 130,648.48 kg per rai, a total carbon sequestration of 2,010 kg of carbon per rai, and carbon dioxide absorption of 61,404.96 kg of CO₂ per rai. The 19-year-old plantation had higher values compared to the 10-year-old and 6-year-old plantations. Soil quality was found to have compacted characteristics with loamy, sandy-clay soil. The average temperature ranged from 25.18 to 26.75 °C, and the average pH was between 6 and 6.67, indicating slightly acidic soil. The moisture content varied, with the 19-year-old rubber plantation having the highest moisture content at a soil depth of 10 cm (13.3%) and 20 cm (26.75%). For the 6-year-old rubber plantation, soil fertility was highest, with N at 55.33 mg/L, P at 61.83 mg/L, and K at 153 mg/L. However, soil quality did not correlate with the carbon sequestration of RRIM 600 rubber trees.