Strategies for the Management of Conjunctive Use of Surface Water and Groundwater Resources in Semi-arid Areas PDF Download
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Author: Asad Sarwar Qureshi
Publisher: IWMI
ISBN: 9290905794
Category : Groundwater
Languages : en
Pages : 33
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Book Description
Due to inadequate rainfall, groundwater has acquired a vital role in the development of Pakistan's agricultural economy. However, a lack of awareness concerning the use of groundwater, either by itself or combined with canal water, has added large amounts of salt to the soil. As a result, large tracts of irrigated lands are already salinized, while many others are under threat. This report presents the results of a modeling study carried out to evaluate the long-term effects of a different quality of irrigation water on root zone salinity. The simulations were performed for the Rechna Doab (sub basin of the Indus Basin) in Pakistan, by using 15 years of actual rainfall and climatic data.
Author: Asad Sarwar Qureshi
Publisher: IWMI
ISBN: 9290905794
Category : Groundwater
Languages : en
Pages : 33
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Book Description
Due to inadequate rainfall, groundwater has acquired a vital role in the development of Pakistan's agricultural economy. However, a lack of awareness concerning the use of groundwater, either by itself or combined with canal water, has added large amounts of salt to the soil. As a result, large tracts of irrigated lands are already salinized, while many others are under threat. This report presents the results of a modeling study carried out to evaluate the long-term effects of a different quality of irrigation water on root zone salinity. The simulations were performed for the Rechna Doab (sub basin of the Indus Basin) in Pakistan, by using 15 years of actual rainfall and climatic data.
Author: Fang-Hong Wu
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 364
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Book Description
Author: Mohammad Talib Chaudhry
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 44
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Book Description
Author: Aslam, M., Prathapar, S. A.
Publisher: IWMI
ISBN: 9290906162
Category : Irrigation
Languages : en
Pages : 31
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Book Description
ThisThis report discusses the nature and causes of secondary salinization, reviews strategies developed and tested within IBIS to mitigate salinization, and identifies areas requiring further investigation.
Author: Fang-Hong Wu
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 364
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Book Description
Author: Jehangir, W. A
Publisher: IWMI
ISBN: 9290904925
Category : Groundwater
Languages : en
Pages : 213
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Book Description
Institutional development / Farm income / Water scarcity / GIS / Remote sensing / Salinity control / Pumping / Rain / Water quality / Supplementary irrigation / Environmental sustainability / Sustainable agriculture / Water table / Water balance / Water requirements / Crop production / Models / Groundwater / Surface water / Conjunctive use / Water resource management
Author: Winston Yu
Publisher: World Bank Publications
ISBN: 082139875X
Category : Business & Economics
Languages : en
Pages : 187
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Book Description
This study assesses the impacts of climate risks and development alternatives on water and agriculture in the Indus basin of Pakistan. It analyzes inter-relationships among the climate, water, and agriculture sectors and provides a systems modeling framework for these purposes.
Author:
Publisher: IWMI
ISBN:
Category :
Languages : en
Pages : 75
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Book Description
Author: ​Habib, Z.
Publisher: Food & Agriculture Org.
ISBN: 9251332061
Category : Technology & Engineering
Languages : en
Pages : 48
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Book Description
This working paper takes stock of Pakistan's water resource availability, delineating water supply system and its sources including precipitation and river flows, and the impact of increasing climatic variability on the water supply system. In particular, the paper focuses on the current water usage and requirements in the agricultural sector, and how changing climatic conditions will affect the consumption patterns. With inflows expected to become more variable in the coming years, the severity of climatic extremities will become more pronounced, driving up water demands in addition to the demand increase from a rising population and urbanization. Over extraction of groundwater resources is also disturbing the water calculus and pushing the country towards a critical demand-supply gap.
Author: Michael Mitchell
Publisher:
ISBN:
Category : Saline water
Languages : en
Pages : 19
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Book Description
"Waterlogging and salinisation are major impediments to the sustainability of irrigated agriculture and livelihoods of farming families across the Indus Basin of Pakistan. About 6.3 million ha in Pakistan are affected by different levels and types of salinity. Nearly half of this area is under irrigated agriculture. The drive for higher cropping intensities coupled with the lack of adequate surface water supplies has caused farmers to use poor-quality groundwater as a supplemental source of irrigation. The large scale exploitation of poor quality groundwater has increased the risks of soil salinisation and sodicity. About 4.5 million ha are already affected by secondary salinisation of which about half are located in irrigated areas. Another 1 million ha is affected by water logging (Qureshi et al., 2008). In Punjab, about 20% of the land suffers from salinity and another 20 to 30% has high groundwater levels, due to over application of surface water. Soil salinity problems are particularly serious in Sindh province where some 70 to 80% of the soil is classified as moderately or severely saline (Smedema, 2000). The southern districts of Lower Sindh, Thatta and Badin are particularly vulnerable to salinity due to waterlogging and seawater intrusion in coastal agricultural areas. A holistic approach that incorporates the social, environmental, technical and economic aspects of salinity management is needed in Pakistan. Such an approach offers better prospects for identifying and exploring adaptation measures and building resilience for communities affected by salinity. This SRA has established the need for a holistic approach to salinity and water management, and has laid the basis for developing a shared understanding of the risks and opportunities for farming and coastal communities in salinity affected areas of the Indus Basin of Pakistan. Central to this is an understanding of the spatial and temporal dimensions of salinity in the landscape."--Website.
