Dynamics of CO2 fluxes from oil palm plantations on peatland
| Main Authors: | Jamili, M. Joehari, Nugroho, Budi, Sumawinata, Basuki, Anwar, Syaiful |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Graduate School Bogor Agricultural University (SPs IPB)
, 2021
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| Subjects: | |
| Online Access: |
http://journal.ipb.ac.id/index.php/jpsl/article/view/36519 http://journal.ipb.ac.id/index.php/jpsl/article/view/36519/22575 |
Daftar Isi:
- CO2 flux from peat soil planted with oil palm is temporally and spatially dynamic, which is related to various environmental factors. This flux can be partitioned into fluxes from oil palm root respiration, litter decomposition, and peat material decomposition. The aim of this study was to determine the temporal and spatial dynamics of CO2 fluxes, the contribution of oil palm roots respiration, the contribution of litter decomposition, and the relation between flux and environmental factors in oil palm plantations on peatland. Measurements of CO2 flux using an infrared gas analyzer (IRGA) were carried out in harvesting path and inter raw of oil palm plantation, and nearby bushland. Flux measurements were repeated every three to four days for almost five months. Results showed the dynamics of the CO2 fluxes temporally and spatially. Temporally, CO2 flux in oil palm plantation and bushland ranged from 2.9 – 11.1 and 0.5 – 6.4 g C-CO2 m2/day, respectively. Spatially, the flux in oil palm plantation and bushland ranged from 4.8 – 8.8 and 2.7 – 3.4 g C-CO2 m2/day, respectively. The contribution of oil palm roots respiration and litter decomposition were 48.4 and 5.8%, respectively. These results confirm that plant roots respiration plays an important role in the release of carbon from the soil surface.
- Fluks CO2 pada perkebunan kelapa sawit di lahan gambut bersifat dinamis secara temporal dan spasial, yang berhubungan dengan berbagai faktor lingkungan. Fluks ini dapat dibedakan menjadi fluks dari respirasi akar, dari dekomposisi serasah, dan dari bahan gambut. Penelitian ini bertujuan untuk menetapkan dinamika temporal dan spasial fluks CO2, kontribusi respirasi akar dan dekomposisi serasah terhadap fluks, serta hubungannya dengan faktor lingkungan pada perkebunan kelapa sawit di lahan gambut. Pengukuran fluks CO2 menggunakan infra red gas analyzer (IRGA) yang dilakukan di gawangan hidup, gawangan mati dan lahan semak belukar. Pengukuran fluks dilakukan secara berulang setiap tiga hingga empat hari selama hampir lima bulan. Hasil penelitian memperlihatkan adanya dinamika temporal dan spasial. Secara temporal, fluks CO2 pada perkebunan kelapa sawit dan semak belukar berada pada kisaran 2.9 – 11.1 dan 0.5 – 6.4 g C-CO2/m2/hari. Secara spasial, fluks CO2 pada perkebunan kelapa sawit dan semak belukar berada pada kisaran 4.8 – 8.8 dan 2.7 – 3.4 g C-CO2/m2/hari. Kontribusi perakaran tanaman kelapa sawit dan dekomposisi serasah terhadap fluks sebesar 48.4 dan 5.8%. Hasil ini semakin menegaskan bahwa perakaran tanaman berperan penting terhadap pelepasan karbon dari permukaan tanah.