Effectiveness Analysis of Canal Blocking in Sub-peatland Hydrological Unit 5 and 6 Kahayan Sebangau, Central Kalimantan, Indonesia

Authors

  • Yadi Suryadi Faculty of Civil and Environmental Engineering ,Bandung Institute of Technology
  • Indratmo Soekarno Bandung Institute of Technology
  • Ivan Aliyatul Humam Bandung Institute of Technology

DOI:

https://doi.org/10.5614/j.eng.technol.sci.2021.53.2.5

Abstract

The height of canal blocking has a significant influence on re-wetting peatland, depending on the canal’s distance. An effective canal in good condition has to raise the groundwater table to -0.4 m below ground level according to the Indonesian Ministry of Environment and Forestry (MENLHK). The effectiveness of different canal blockings was modeled by Freewat software with variation of canal distance (200 m, 250 m, 300 m, 350 m, and 400 m) and blocking height (0.2 m, 0.3 m, 0.4 m, 0.5 m, 0.6 m). This simulation was carried out using recharge and evapotranspiration data covering 20 years. The input of the conductivity value was done using 50 m/day according to the calibration. From the modeling, 0.6 m high canal blockings give a satisfactory result at every canal distance. The study took place during the annual dry season, when recharge was almost zero and average evapotranspiration was 6 mm/day. Adjusting the canal blocking to a maximum of 0.6 m and the canal distance to 400 m, the groundwater table slowly rose 0.38 m and it took 30 days to reach full-re-wetting capacity. This study revealed that the effectiveness of canal blocking is directly related to evapotranspiration and recharge, which has a positive correlation with the groundwater rise and the re-wetting period.

Author Biographies

Yadi Suryadi, Faculty of Civil and Environmental Engineering ,Bandung Institute of Technology

Faculty of Civil and Environmental Engineering ,Bandung Institute of Technology

Indratmo Soekarno, Bandung Institute of Technology

Faculty of Civil and Environmental Engineering ,Bandung Institute of Technology

Ivan Aliyatul Humam, Bandung Institute of Technology

Faculty of Civil and Environmental Engineering ,Bandung Institute of Technology

References

Rydin, H. & Jeglum, J.K., The Biology of Peatlands. Ebooks Corporation, Oxford University Press, Oxford, United Kingdom, 2013.

Ōsaki, M. & Tsuji, N., Tropical Peatland Ecosystems, Tokyo Heidelberg New York Dordrecht London: Springer, 2016.

Hooijer, A., Page, S., Jauhiainen, J., Lee, W.A., Lu, X.X., Idris, A. & Anshari, G., Subsidence and Carbon Loss in Drained Tropical Peatlands, Biogeosciences, 9(3), pp. 1053-1071, 2012. DOI: 10.5194/bg-9-1053-2012

Wösten, J.H.M., Van Den Berg, J., Van Eijk, P., Gevers, G.J.M., Giesen, W.B.J.T., Hooijer, A. & Wibisono, I.T., Interrelationships between Hydrology and Ecology in Fire Degraded Tropical Peat Swamp Forests, International Journal of Water Resources Development, 22(1), pp. 157-174, 2006. DOI: 10.1080/07900620500405973.

Sumarga, E., Hein, L., Hooijer, A. & Vernimmen, R., Hydrological and Economic Effects of Oil Palm Cultivation in Indonesian Peatlands, Ecology and Society, 21(2), 52, 2016. DOI: 10.5751/ES-08490-210252.

Biancalani, R., Avagyan, A. & Food and Agriculture Organization of the United Nations (Eds.), Towards Climate-responsible Peatlands Management, Rome: Food and Agriculture Organization of the United Nations (FAO), 2014.

Ritzema, Henk, Limin, S., Kusin, K., Jauhiainen, J. & Wosten, H., Canal Blocking Strategies for Hydrological Restoration of Degraded Tropical Peatlands in Central Kalimantan, Indonesia, CATENA, 114, pp. 11-20, 2014.

Indra, E.P., The Effect of the Precipitation Pattern of the Dry Season on Peat Fire Occurrence in the Mega Rice Project Area, Central Kalimantan, Indonesia. Tropics, 19(4), pp. 145-56, 2011.

Page, S., Hosciło, A., Wösten, H., Jauhiainen, J., Silvius, M., Rieley, J. & Limin, S., Restoration Ecology of Lowland Tropical Peatlands in Southeast Asia: Current Knowledge and Future Research Directions, Ecosystems, 12(6), pp. 888-905, 2009. DOI: 10.1007/s10021-008-9216-2

Ministry of Environment and Forestry of the Republic of Indonesia (KLHK), Law No. 16 of 2017 on Technical Guidelines for Recovery Peat Ecosystem Function, 2017.

Ministry of Environment and Forestry of the Republic of Indonesia (KLHK), Government Regulation of the R.I. No. 71 of 2014 concerning Protection and Management of Ecosystem of Peat lands, 2014.

Ministry of Environment and Forestry of the Republic of Indonesia (KLHK), Law No. 32 of 2009 on Environmental Protection and Management, The State Gazette of the Republic of Indonesia of 2009 number 140. Jakarta, 2009.

Dohong, A., Indratmo, S., Wibisono, ITC., Maas, A., Rais, D.S., Triadi, B., Rahmadi, Aditya, T., Nasir, D., Fakhturahman, Subahani, E. & Kiki, A., Peatland Ecosystem Restoration Plan, Pulang Pisau District, Central Kalimantan Province, Peatland Restoration Agency (BRG), Jakarta, 2016.

McDonald, Michael, G. & Harbaugh, A.W., A Modular Three-Dimensional Finite-Difference Ground-Water Flow Model, US. Geological Survey, pp. 1-539, 1984.

Rai S.N., Modeling Groundwater Flow in Unconfined Aquifers, in Basu S., Kumar N. (eds.) Modeling and Simulation of Diffusive Processes. Simulation Foundations, Methods, and Applications, Springer, Champ., pp. 187-210, 2014. DOI: 10.1007/978-3-319-05657-9_9.

Remson, I., Hornberger, G.M. & Molz, F.J., Numerical Methods in Subsurface Hydrology, Wiley- Interscience, Newyork, 1971.

Humam, I.A,. Modeling of Water Balance and Groundwater Table in Peatland Hydrological Unit 5 and 6 Kahayan Sebangau, Central Kalimantan Province in, Master Thesis, Bandung Institute of Technology, pp. 1-98, 2019.

Downloads

Published

2021-04-19

Issue

Section

Articles