ข้อมูลงานวิจัย

กายภาพและสิ่งแวดล้อมกายภาพ

Soil Respiration of Natural Forest, Forest Plantation and Agricutural Incubated Soils

การหายใจของดินในป่าธรรมชาติ ป่าปลูก และดินที่บ่มในพื้นที่การเกษตร

RMUTP International Conference Green Technology and Productivity

Dry Dipterocarp Forest; Dry Evergreen Forest

2010/2553

2010-2010

บทความในงานประชุมวิชาการ

ฉบับสมบูรณ์

กายภาพและสิ่งแวดล้อมกายภาพ

Soil Respiration; CO2 Emission; Sakaerat Environmental Research Station

Recently, scientists have focused attention on soil as a major source and sink for atmospheric CO2. Three replications of two-depth soils from eleven different ecosystem types from Sakaerat Environmental Research Station (SERS), Sakaerat Silvicultural Research Station (SSRS) and Suranaree University of Technology (SUT), Nakhon Ratchasima were collected during the first week of March, 2010. The soils were then incubated at 25 (degrees Celsius) for three days and measured their respiration rates. The highest soil respiration rate was found in sunflower with 0.823 (mu)mol CO2 g-1 h-1 while the lowest was found in eucalyptus plantation in SUT with 0.005 (mu)mol CO2 g-1 h-1. Additionally between two natural forests at SERS, the respiration rate of dry evergreen forest was higher than in dry dipterocarp forest with the value of 0.037 and 0.016 (mu)mol CO2 g-1 h-1 respectively. Whereas the soil respiration rate at SSRS forests was highest in the eucalyptus plantation (0.048 (mu)mol CO2 g-1 h-1) and lowest in acacia plantation (0.027 (mu)mol CO2 g-1 h-1). The overall respiration rate was higher for soils from 0-5 cm than 5-15 cm, but not statistically significant difference. Soil water content and pH were positively significant related with soil respiration (p<0.01). Soil carbon, however, was also positively significant related with soil respiration but in lesser degree (p<0.05). Therefore soil water content and pH should be major driving forces for soil respiration.

Dorji & Suwanwaree 2010 Soil Respiration of Natural Forest, Forest Plantation and Agricutural Incubated Soils The 2nd RMUTP International Conference Green Technology and Productivity [62]

Karma Dorji(กามา ดอร์จิ) Pongthep Suwanwaree(พงศ์เทพ สุวรรณวารี)