Thanh, PN, Le Van, T, Minh, TT, Ngoc, TH, Lohpaisankrit, W, Pham, QB, Gagnon, A, Deb, P, Pham, NT, Anh, DT and Dinh, VN (2023) Adapting to climate-change-induced drought stress for improving water management in Southeast Vietnam. Sustainability, 13. ISSN 2071-1050

Preview

Text Adapting to climate-change-induced drought stress for improving water management in Southeast Vietnam.pdf - Published Version Available under License Creative Commons Attribution. Download (15MB) | Preview

Abstract

In Southeast Vietnam, droughts have become more frequent, causing significant damage and impacting the region’s socio-economic development. Water shortages frequently affect the industrial and agricultural sectors in the area. This study aims to calculate the water balance and the resilience of existing water resource allocations in the La Nga-Luy River basin based on two scenarios: (1) business-as-usual and (2) following a sustainable development approach. The MIKE NAM and MIKE HYDRO BASIN models were used for Rainfall-Runoff (R-R) and water balance modelling, respectively, and the Keetch-Byram Drought Index (KBDI) was used to estimate the magnitude of droughts. The results identified areas within the Nga-Luy River basin where abnormally dry and moderate drought conditions are common and subbasins, i.e., in the Southeast and Northeast, where severe and extreme droughts often prevail. It is also shown that the water demand for the irrigation of the Winter-Spring and Summer-Autumn crop life cycles could be fully met under abnormally dry conditions. This decreases to 85–100% during moderate droughts, however. In contrast, 65% and 45–50% of the water demand for irrigation is met for the Winter-Spring and Summer-Autumn crop life cycles, respectively, during severe and extreme droughts. Furthermore, this study demonstrates that the water demand for irrigation could still be met 100% and 75–80% of the time during moderate, extreme, and severe droughts, respectively, through increased water use efficiency. This study could help managers rationally regulate water to meet the agricultural sector’s needs in the region and reduce the damage and costs caused by droughts.

Item Type:	Article
Uncontrolled Keywords:	water allocation; water use; droughts; climate change; southeast Vietnam; 12 Built Environment and Design
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions:	Biological & Environmental Sciences (from Sep 19)
Publisher:	MDPI AG
SWORD Depositor:	A Symplectic
Date Deposited:	02 Jun 2023 15:15
Last Modified:	16 Jun 2023 13:45
DOI or ID number:	10.3390/su15119021
URI:	https://researchonline.ljmu.ac.uk/id/eprint/19605

View Item