Water scarcity alleviation through water footprint reduction in agriculture: The effect of soil mulching and drip irrigation

Hamideh Nouri, B. Stokvis, A. Galindo, M.L. Blatchford, Arjen Y. Hoekstra

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Water scarcity has received global attention in the last decade as it challenges food security in arid and semi-arid regions, particularly in the Middle East and North Africa. This research assesses the possible alleviation of water scarcity by reducing the water footprint in crop production through the application of soil mulching and drip irrigation. The study is the first to do so at catchment scale, taking into account various crops, multi-cropping, cropping patterns, and spatial differences in climate, soil, and field management factors, using field survey and local data. The AquaCrop-OS model and the global water footprint assessment (WFA) standard were used to assess the green and blue water footprint (WF) of ten major crops in the Upper Litani Basin (ULB) in Lebanon. The blue water saving and blue water scarcity reduction under these two alternative practices were compared to the current situation. The results show that the WF of crop production is more sensitive to climate than soil type. The annual blue WF of summer crops was largest when water availability was lowest. Mulching reduced the blue WF by 3.6% and mulching combined with drip irrigation reduced it by 4.7%. The blue water saving from mulching was estimated about 6.3 million m3/y and from mulching combined with drip irrigation about 8.3 million m3/y. This is substantial but by far not sufficient to reduce the overall blue WF in summer to a sustainable level at catchment scale.
LanguageEnglish
Pages241-252
JournalScience of the total environment
Volume653
DOIs
Publication statusPublished - 2019

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water footprint
mulching
drip irrigation
Irrigation
Agriculture
agriculture
Soils
Crops
Water
soil
water
crop production
Catchments
crop
cropping practice
catchment
Arid regions
climate
summer
effect

Cite this

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title = "Water scarcity alleviation through water footprint reduction in agriculture: The effect of soil mulching and drip irrigation",
abstract = "Water scarcity has received global attention in the last decade as it challenges food security in arid and semi-arid regions, particularly in the Middle East and North Africa. This research assesses the possible alleviation of water scarcity by reducing the water footprint in crop production through the application of soil mulching and drip irrigation. The study is the first to do so at catchment scale, taking into account various crops, multi-cropping, cropping patterns, and spatial differences in climate, soil, and field management factors, using field survey and local data. The AquaCrop-OS model and the global water footprint assessment (WFA) standard were used to assess the green and blue water footprint (WF) of ten major crops in the Upper Litani Basin (ULB) in Lebanon. The blue water saving and blue water scarcity reduction under these two alternative practices were compared to the current situation. The results show that the WF of crop production is more sensitive to climate than soil type. The annual blue WF of summer crops was largest when water availability was lowest. Mulching reduced the blue WF by 3.6{\%} and mulching combined with drip irrigation reduced it by 4.7{\%}. The blue water saving from mulching was estimated about 6.3 million m3/y and from mulching combined with drip irrigation about 8.3 million m3/y. This is substantial but by far not sufficient to reduce the overall blue WF in summer to a sustainable level at catchment scale.",
author = "Hamideh Nouri and B. Stokvis and A. Galindo and M.L. Blatchford and Hoekstra, {Arjen Y.}",
year = "2019",
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Water scarcity alleviation through water footprint reduction in agriculture : The effect of soil mulching and drip irrigation. / Nouri, Hamideh ; Stokvis, B.; Galindo, A.; Blatchford, M.L.; Hoekstra, Arjen Y.

In: Science of the total environment, Vol. 653, 2019, p. 241-252.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Water scarcity alleviation through water footprint reduction in agriculture

T2 - Science of the total environment

AU - Nouri, Hamideh

AU - Stokvis, B.

AU - Galindo, A.

AU - Blatchford, M.L.

AU - Hoekstra, Arjen Y.

PY - 2019

Y1 - 2019

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AB - Water scarcity has received global attention in the last decade as it challenges food security in arid and semi-arid regions, particularly in the Middle East and North Africa. This research assesses the possible alleviation of water scarcity by reducing the water footprint in crop production through the application of soil mulching and drip irrigation. The study is the first to do so at catchment scale, taking into account various crops, multi-cropping, cropping patterns, and spatial differences in climate, soil, and field management factors, using field survey and local data. The AquaCrop-OS model and the global water footprint assessment (WFA) standard were used to assess the green and blue water footprint (WF) of ten major crops in the Upper Litani Basin (ULB) in Lebanon. The blue water saving and blue water scarcity reduction under these two alternative practices were compared to the current situation. The results show that the WF of crop production is more sensitive to climate than soil type. The annual blue WF of summer crops was largest when water availability was lowest. Mulching reduced the blue WF by 3.6% and mulching combined with drip irrigation reduced it by 4.7%. The blue water saving from mulching was estimated about 6.3 million m3/y and from mulching combined with drip irrigation about 8.3 million m3/y. This is substantial but by far not sufficient to reduce the overall blue WF in summer to a sustainable level at catchment scale.

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