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

Sustainability

Ghulam Nabi¹  Aamir Shakoor²  Hafiz Umar Farid²  Muhammad Abdul Wajid³  Shakeel Ahmed⁴  Naveed Ahmed⁵  Haishen Lü⁵ 

[1] Center of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, Pakistan;Department of Agricultural Engineering, Bahauddin Zakariya University, Multan 66000, Pakistan;Department of Irrigation and Drainage, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan;Project Management Office (PMO) for Punjab Barrages, Rehabilitation & Modernization Projects, Punjab Irrigation Department, Lahore 39571, Pakistan;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;

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

DOI  :  10.3390/su13168695

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown