4.6 Article

Irrigation Supply and Demand, Land Use/Cover Change and Future Projections of Climate, in Indus Basin Irrigation System, Pakistan

期刊

SUSTAINABILITY
卷 13, 期 16, 页码 -

出版社

MDPI
DOI: 10.3390/su13168695

关键词

climate change; Indus Basin; irrigation canal; water demand; water supply; water evaluation and planning

资金

  1. National Key RD Programs [2019 Yfc1510504]
  2. National Natural Science Foundation of China [41830752, 42071033, 41961134003]

向作者/读者索取更多资源

The study used the WEAP model to examine the Indus Basin Irrigation System (IBIS) in Pakistan, finding that current water resources are insufficient to meet crop water demands, especially in the Lower Jhelum Canal (LJC) command area. Climate change negatively impacts the reliability of canal water resources, highlighting the urgent need for improved canal water management.
Sustainable management of canal water through optimum water allocation is the need of the modern world due to the rapid rise in water demand and climatic variations. The present research was conducted at the Chaj Doab, Indus Basin Irrigation System (IBIS) of Pakistan, using the WEAP (Water Evaluation and Planning) model. Six different scenarios were developed, and the results showed that the current available surface water is not sufficient to meet crop water demands. The Lower Jhelum Canal (LJC) command area is more sensitive to water scarcity than the Upper Jhelum Canal (UJC). The future (up to 2070) climate change scenarios for RCP 4.5 and 8.5 showed a decrease in catchment reliability up to 26.80 and 26.28% for UJC as well as 27.56 and 27.31% for LJC catchment, respectively. We concluded that scenario 3 (irrigation efficiency improvement through implementation of a high efficiency irrigation system, canal lining, reduction and replacement of high delta crops with low delta crops) was sufficient to reduce the canal water deficit in order to optimize canal water allocation. Improvement in the irrigation system and cropping area should be optimized for efficient canal water management.

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