MATEC Web Conf.
Volume 276, 2019International Conference on Advances in Civil and Environmental Engineering (ICAnCEE 2018)
|Number of page(s)||7|
|Published online||15 March 2019|
The effectiveness of canal blocking for hydrological restoration in tropical peatland
1 Department of Civil Engineering, Universitas Riau, Pekanbaru, Indonesia
2 Department of Soil Science, Universitas Riau, Pekanbaru, Indonesia
3 Peatland Restoration Agency, Republic of Indonesia
4 Department of Biology, Universitas Riau, Pekanbaru, Indonesia
5 Department of Civil and Environmental Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
6 Centre for Disaster Studies, Universitas Riau, Pekanbaru, Indonesia
7 Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta, Indonesia
8 Department of Civil and Environmental Engineering, Yamaguchi University, Japan
* Corresponding author: firstname.lastname@example.org
The Peatland Restoration Agency of the Republic of Indonesia (BRG-RI), an agency that is mandated to restore 2 million hectares of degraded peatland by 2020, has developed a 3-R approach towards tackling the problem based on the program of rewetting, revegetation, and revitalization of livelihood for the peatlands restoration in Indonesia. The Rewetting program that aims to rehabilitate hydrologically a peatland to a near natural state is carried out by canal blocking, canal backfilling, and construction of deep wells. To know the progress of the restoration activities by BRG, it is very important to understand the effectiveness of canal blocking on rewetting of the tropical peatland. The effectiveness of canal blocking was investigated through the monitoring of groundwater level (GWL) fluctuation around the canal block. This study was carried out at a canal block that is located at the peatland of Sungai Tohor Village, Kepulauan Meranti Regency, Riau Province. For monitoring of GWL fluctuation as the impact of canal blocking, five dipwells were set at the peatland that are perpendicular to the canal with the distance of 20 m, 70 m, 120 m, 170 m, and 220 m respectively. The results of this study show that the impact of canal blocking could raise the water table in the peatland at the radius of about 170 m from the canal. The radius impact of the re-wetting might be bigger or smaller, that strongly depends on the hydrotopography situation of the area.
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