Evaluation of Drought Vulnerability on Watersheds in West Sumatera Province by Using Cropwat-8 and GIS

Darwizal Daoed, Bujang Rusman, Bambang Istijono, Abdul Hakam, Masril Syukur

Abstract


Differences in temperature, duration of irradiation, wind speed, watershed shape, slope, and rainfall are the factors that determine the amount of evaporation and discharge flow also characterizing of the watershed. As noted, the difference between the maximum and minimum temperatures is over6 14℃">  and the dry season happens mostly from May to October in West Sumatra Province each year. It, of course,will affect the magnitude of potential evapotranspiration and the minimum water flow that tend to decrease. Therefore, a particular evaluation of the impact of drought or susceptibility to water potential of the watersheds in the Areas of Akuaman River of West Sumatra should be undertaken. The methods used were the standard of Ministry of Forestry of Indonesia- the Agency for Research and Development of Forestry and the Center for Research and Development of Conservation and Rehabilitation 2012 and Arc-GIS-10.3 software to determine the index of vulnerability to drought and Cropwat-8to calculate evapotranspiration by Penman-Monteith method. The evaluation results show evapotranspiration value was 5.32 mm / day, 161.7 mm / month and the category of susceptibility tended to be medium and somewhat vulnerable. A review of the aspect of service levels of the use of water and minimum specific discharge is seen that in small watersheds 14A≤100 km2">  is more susceptible to get drought than larger basins. It is therefore suggested to stakeholders to consider the possibilities for watershed integration as a solution to improve water supply for irrigation.


Keywords


characteristics; drought vulnerability; watersheds; GIS.

Full Text:

PDF

References


Paimin, I.B.P., Purwanto, Dewi Retna I., Watershed Management Planning System (Sistem Perencanaan Pengelolaan Daerah Aliran Sungai). Vol. -. 2013, Bogor Indonesia: Pusat Penelitian dan Pengembangan Konservasi dan Rehabilitasi (P3KR). 100.

Wu, Huo, Hui Qian, Jie Chen, Chenchen Huo, Assessment of agricultural drought vulnerability in the Guanzhong Plain, China. Water resources management, 2017. 31(5): p. 1557-1574.

Kamali, B., Abbaspour, Anthony Lehmann, Bernhard Wehrli, Hong Yang, Spatial assessment of maize physical drought vulnerability in Sub-Saharan Africa: Linking drought exposure with crop failure. Environmental Research Letters, 2018.

Paimin, P., Murtiono, U. H., Wuryanta, A., Integrated Watershed Management Planning as a Base for Increasing Food Security in the Tuntang Watershed (Perencanaan Pengelolaan DAS Terpadu Sebagai Basis Peningkatan Ketahanan Pangan di DAS Tuntang). 2011, BPTKPDAS Bogor, Indonesia.

Sahindomi Bana, S.P., Ariffin, Soemarno Evaluation Crop Water Requirement on the Dryland at the West Bangkala Sub District of Jeneponto Regency International Journal of Ecosystem 2013.: p. 7.

Ministry, P.W., Irrigation Planning Criteria Standards, in KP-01, D.G.o.W. Resources, Editor. 2010, -: Jakarta.

Nurhamidah, N., Rusman, B., & Istijono, B. (2018). A Raster-based model for flood inundation mapping on delta lowland. In MATEC Web of Conferences (Vol. 229, p. 03012). EDP Sciences.

Rusman, B., Agustian, Aprisal, Syafrimen Yasin, Andisols Water Retention Under Peasant Oil Palm Plantation. International Journal on Advanced Science, Engineering and Information Technology, 2018. 8(1): p. 280-284.

Nasiri Mehdi, Davoud Zarehaghi, and M.R. Neyshabouri, Some Weeds Community Percent in Response to Pumice Application on Soil under Water Stress Conditions IJASEIT, 2016. 6 No. 2(-): p. 6.

Fitria Welly and M.S. Pratama, The effect of1997 El Nino and 1999 La Nina Phenomena on Rainfall in Biak. Jurnal Metorologi Geofisika, 2013. 14 No. 2: p. 10.

Herdianto Revalin, Elvi Roza Syofyan, Suhendrik Hanwar, Bambang Istijono, - Dalrino., The Investigation of 1997 and 2015 El Nino Events in West Sumatera, Indonesia IJASEIT, 2017. 7 No. 2(El Nino): p. 6.

Ahmadalipour, A. and H. Moradkhani, Multi-dimensional assessment of drought vulnerability in Africa: 1960–2100. Science of The Total Environment, 2018. 644: p. 520-535.

Allen, R.G., Luis S. Pereira, Dirk Raes, Martin Smith, Corp evapotranspiration : guidelines for computing crop water requirements Food and Agriculture Organization of the United Nations, Rome. 1998.

Valiantzas, J.D., Simplified forms for the standardized FAO-56 Penman–Monteith reference evapotranspiration using limited weather data. Journal of Hydrology, 2013. 505: p. 13-23.

Allen, R.G., et al., A recommendation on standardized surface resistance for hourly calculation of reference ETo by the FAO56 Penman-Monteith method. Agricultural Water Management, 2006. 81(1-2): p. 1-22.

Daoed Darwizal, Bambang Istijono, and A. Hakam., Predictions of Vulnerability Flood and Flood Prone Areas in Watershed West Sumatra Province using Arc-GIS and Category Value. International Journal of Earth Sciences and Engineering, 2016. 09 SPL No 03(3rd International Conference on Earth Sciences and Engineering (ICEE 2016) 17th-18th June, 2016): p. 274-279.

Daoed Darwizal, Bambang Istijono, and A. Hakam. Integration of Small Watersheds to Meet Water Needs Using Supplemental Channels(Integrasi Daerah Aliran Sungai Kecil untuk Memenuhi Kebutuhan Air Menggunakan Saluran Suplesi) in Pertemuan Ilmiah Tahunan HATHI 31. 2014. Padang: HATHI Pusat.

Hussein I. Ahmed, J.L., Evaluating Reference Crop Evapotranspiration (ETo) in the Centre of Guanzhong Basin — Case of Xingping & Wugong, Shaanxi, China. Engineering Scientific Research, 2013. 5(Crop Evapotranspiration): p. 9.




DOI: http://dx.doi.org/10.18517/ijaseit.8.6.3520

Refbacks

  • There are currently no refbacks.


Published by INSIGHT - Indonesian Society for Knowledge and Human Development