Assessing the impact of tree plantations on Water and CO2 Cycles in the peat swamp forest, Indonesia
Abstract
The rapid deforestation in tropical countries contributes to the increase in the atmospheric concentration of carbon dioxide. On the other hand, the importance of bio-materials will be continuously increasing because of the demand of recyclable resources is increasing for the reduction of the consumption of fossil resources. We are trying to enhance the theoretical and empirical understanding of soil-vegetation -atmosphere exchanges of carbon dioxide (CO2), water (H2O), and energy balance components based on in situ observation and modeling in peat swamp forest, West Kalimantan. Our research targets are following three: 1. To estimate water budget using ground water level, rain gauge and water flux data. 2. To observe Carbon exchange processes (CO2 budget) during and after ecological succession from secondary forest to plantation forest. 3. To propose new method of ground water management to improve timber productivity and to reduce environmental load using observation data and hydrological modeling. CO2 flux monitoring is started cooperate with local company (Pt. WSL) since May 2010. Wetlands ecosystems act as a sink (photosynthetic uptake) and source (due to soil decomposition) of carbon. Our target area is revealed as a net carbon sink in 2010-2011 season. Soil release CO2 into atmosphere, however photosynthetic activity absorption is much more efficient. The amount of CO2 release from peat swamp depends on water level and surface soil moisture. One year observation data is not enough to discuss carbon budget in peat swamp. For example, 2010-2011 season is La Niña (rainy) year in Indonesia. CO2 flux and hydrological observation will be continued until 2015 for understanding long-term carbon budget. Keywords: CO2 Flux, eddy covariance, peat decomposition, hydrological modeling
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2011
- Bibcode:
- 2011AGUFM.B21C0272K
- Keywords:
-
- 0428 BIOGEOSCIENCES / Carbon cycling;
- 1818 HYDROLOGY / Evapotranspiration;
- 1840 HYDROLOGY / Hydrometeorology;
- 1890 HYDROLOGY / Wetlands