Climate change impacts on soil salinity in agricultural areas
Abstract
Changes in climate patterns are dramatically influencing some agricultural areas. Arid, semi‐arid and coastal agricultural areas are especially vulnerable to climate change impacts on soil salinity. Inventorying and monitoring climate change impacts on salinity are crucial to evaluate the extent of the problem, to recognize trends and to formulate irrigation and crop management strategies that will maintain the agricultural productivity of these areas. Over the past three decades, Corwin and colleagues at the U.S. Salinity Laboratory (USSL) have developed proximal sensor and remote imagery methodologies for assessing soil salinity at multiple scales. The objective of this paper is to evaluate the impact climate change has had on selected agricultural areas experiencing weather pattern changes, with a focus on the use of proximal and satellite sensors to assess salinity development. Evidence presented in case studies for Californiaʼs San Joaquin Valley (SJV) and Minnesotaʼs Red River Valley (RRV) demonstrates the utility of these sensor approaches in assessing soil salinity changes due to changes in weather patterns. Agricultural areas are discussed where changes in weather patterns have increased root‐zone soil salinity, particularly in areas with shallow water tables (SJV and RRV), coastal areas with seawater intrusion (e.g., Bangladesh and the Gaza Strip) and water‐scarce areas potentially relying on degraded groundwater as an irrigation source (SJV and Murray‐Darling River Basin). Trends in salinization due to climate change indicate that the infrastructure and protocols to monitor soil salinity from field to regional to national to global scales are needed. Highlights: Climate change will have a negative impact on agriculture, particularly in arid regions. Proximal/remote sensors are useful to assess climate change impact on soil salinity across scales. Salt‐water intrusion, shallow water tables and degraded water reuse will increase soil salinity. Infrastructure and protocols to monitor soil salinity across multiple scales are needed.
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Reduced precipitation due to climate change poses increased risks for arid and semi-arid regions as desertification and salinization threaten cropland in the Mediterranean, Africa, parts of Australia, Central America, and parts of the USA.
“Reduced precipitation due to climate change poses increased risks for arid and semi-arid regions as desertification and salinization threaten cropland in the Mediterranean, Africa, parts of Australia, Central America, and parts of the USA (Corwin, 2021).”
From Genetic resources and precise gene editing for targeted improvement of barley abiotic stress tolerance (2023) · cites this paper as Corwin, 2021
Cites
OERKE, E.-C. (2006) · The Journal of Agricultural Science · doi:10.1017/s0021859605005708 · Cited by 5,283 · see citing works
Climate Trends and Global Crop Production Since 1980
Lobell, D. B., Schlenker, W., & Costa-Roberts, J. (2011) · Science · doi:10.1126/science.1204531 · Cited by 4,734 · see citing works
Crop Salt Tolerance—Current Assessment
Maas, E. V., & Hoffman, G. J. (1977) · Journal of the Irrigation and Drainage Division · doi:10.1061/jrcea4.0001137 · Cited by 3,565 · see citing works
Drought under global warming: a review
Dai, A. (2011) · WIREs Climate Change · doi:10.1002/wcc.81 · Cited by 3,523 · cited 1× · see citing works
“Even though there is no short-term extreme weather event that can be conclusively attributed to climate change, there is a statistical record of these events showing that they clearly occur with increased frequency and/or intensity (Dai, 2011).”
BackgroundSeawater intrusion processes, investigation and management: recent advances and future challenges
Werner, A. D., Bakker, M., Post, V. E. A., Vandenbohede, A., Lu, C., Ataie-Ashtiani, B., Simmons, C. T., & Barry, D. A. (2013) · Advances in Water Resources · doi:10.1016/j.advwatres.2012.03.004 · Cited by 1,658 · see citing works
Global water crisis and future food security in an era of climate change
Hanjra, M. A., & Qureshi, M. E. (2010) · Food Policy · doi:10.1016/j.foodpol.2010.05.006 · Cited by 1,387 · see citing works
Climate change, plant diseases and food security: an overview
Chakraborty, S., & Newton, A. C. (2011) · Plant Pathology · doi:10.1111/j.1365-3059.2010.02411.x · Cited by 1,191 · see citing works
Apparent soil electrical conductivity measurements in agriculture
Corwin, D. L., & Lesch, S. M. (2004) · Computers and Electronics in Agriculture · doi:10.1016/j.compag.2004.10.005 · Cited by 1,095 · see citing works
Self-citationFood Security and Food Production Systems
Change, I. P. O. C. (2015) · Cambridge University Press eBooks · doi:10.1017/cbo9781107415379.012 · Cited by 1,088 · see citing works
Global desertification: Drivers and feedbacks
D’Odorico, P., Bhattachan, A., Davis, K. F., Ravi, S., & Runyan, C. W. (2012) · Advances in Water Resources · doi:10.1016/j.advwatres.2012.01.013 · Cited by 1,005 · see citing works
Near-term Climate Change: Projections and Predictability
Change, I. P. O. C. (2014) · Cambridge University Press eBooks · doi:10.1017/cbo9781107415324.023 · Cited by 927 · see citing works
Long-term Climate Change: Projections, Commitments and Irreversibility Pages 1029 to 1076
Change, I. P. O. C. (2014) · Cambridge University Press eBooks · doi:10.1017/cbo9781107415324.024 · Cited by 689 · see citing works
Plant CO 2 responses: an issue of definition, time and resource supply
Körner, C. (2006) · New Phytologist · doi:10.1111/j.1469-8137.2006.01886.x · Cited by 610 · see citing works
Plant growth and competition at elevated CO2: on winners, losers and functional groups
Poorter, H., & Navas, M. (2003) · New Phytologist · doi:10.1046/j.1469-8137.2003.00680.x · Cited by 601 · see citing works
Application of Soil Electrical Conductivity to Precision Agriculture
Corwin, D. L., & Lesch, S. M. (2003) · Agronomy Journal · doi:10.2134/agronj2003.4550 · Cited by 596 · see citing works
Self-citationAltered soil microbial community at elevated CO 2 leads to loss of soil carbon
Carney, K. M., Hungate, B. A., Drake, B. G., & Megonigal, J. P. (2007) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0610045104 · Cited by 523 · see citing works
The use of electromagnetic induction techniques in soils studies
Doolittle, J. A., & Brevik, E. C. (2014) · Geoderma · doi:10.1016/j.geoderma.2014.01.027 · Cited by 449 · see citing works
Idso, K. E. (1994) · Agricultural and Forest Meteorology · doi:10.1016/0168-1923(94)90025-6 · Cited by 408 · see citing works
Direct evidence of the feedback between climate and weathering
Gíslason, S. R., Oelkers, É. H., Eiríksdóttir, E. S., Kardjilov, M. I., Gísladóttir, G., Sigfússon, B., Snorrason, Á., Elefsen, S., Harðardóttir, J., Torssander, P., et al. (2008) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2008.10.018 · Cited by 391 · see citing works
GRASSLAND RESPONSES TO THREE YEARS OF ELEVATED TEMPERATURE, CO2, PRECIPITATION, AND N DEPOSITION
Zavaleta, E. S., Shaw, M. R., Chiariello, N. R., Thomas, B. D., Cleland, E. E., Field, C. B., & Mooney, H. A. (2003) · Ecological Monographs · doi:10.1890/02-4053 · Cited by 382 · see citing works
Characterizing soil spatial variability with apparent soil electrical conductivity
Corwin, D. L., & Lesch, S. M. (2004) · Computers and Electronics in Agriculture · doi:10.1016/j.compag.2004.11.002 · Cited by 332 · see citing works
Self-citationClimate change and soil salinity: The case of coastal Bangladesh
Dasgupta, S., Hossain, M. M., Huq, M., & Wheeler, D. R. (2015) · AMBIO · doi:10.1007/s13280-015-0681-5 · Cited by 303 · see citing works
SALINITY PROBLEMS AND CROP PRODUCTION IN COASTAL REGIONS OF BANGLADESH
Haque, S. A. (2006) · Pakistan Journal of Botany · Cited by 296 · see citing works
(2008) · Developments in psychiatry · doi:10.1016/s0166-2481(07)32042-4 · Cited by 291 · see citing works
Terrestrial nitrogen feedbacks may accelerate future climate change
Zaehle, S., Friedlingstein, P., & Friend, A. D. (2010) · Geophysical Research Letters · doi:10.1029/2009gl041345 · Cited by 284 · see citing works
Handbook of Agricultural Geophysics
Allred, B. J., Daniels, J. J., & Ehsani, M. R. (2008) · CRC Press eBooks · doi:10.1201/9781420019353 · Cited by 283 · see citing works
Long, S. P., Ainsworth, E. A., Leakey, A. D. B., & Morgan, P. B. (2005) · Philosophical Transactions of the Royal Society B Biological Sciences · doi:10.1098/rstb.2005.1749 · Cited by 273 · see citing works
Regional-scale soil salinity assessment using Landsat ETM + canopy reflectance
Scudiero, E., Skaggs, T. H., & Corwin, D. L. (2015) · Remote Sensing of Environment · doi:10.1016/j.rse.2015.08.026 · Cited by 267 · see citing works
Self-citationPredicting the interaction between the effects of salinity and climate change on crop plants
Yeo, A. R. (1998) · Scientia Horticulturae · doi:10.1016/s0304-4238(98)00193-9 · Cited by 223 · see citing works
Corwin, D. L., Lesch, S. M., Shouse, P. J., Soppe, R. W. O., & Ayars, J. E. (2003) · Agronomy Journal · doi:10.2134/agronj2003.3520 · Cited by 222 · see citing works
Self-citationField‐Scale Electrical Conductivity Mapping for Delineating Soil Condition
Johnson, C. K., Doran, J. W., Duke, H. R., et al. (2001) · Soil Science Society of America Journal · doi:10.2136/sssaj2001.1829 · Cited by 220 · see citing works
Modeling the Impact of Climate Change on Rice Production in Asia
Matthews, R., Kropff, M. J., Bachelet, D., et al. (1995) · Springer eBooks · doi:10.1007/978-3-642-85193-3_29 · Cited by 215 · see citing works
Remote sensing of salt affected soils
Mougenot, B., Pouget, M., & Epema, G. F. (1993) · Remote Sensing Reviews · doi:10.1080/02757259309532180 · Cited by 213 · see citing works
Brevik, E. C. (2013) · Agriculture · doi:10.3390/agriculture3030398 · Cited by 203 · see citing works
Assessing impacts of sea level rise on river salinity in the Gorai river network, Bangladesh
Bhuiyan, M. J. A. N., & Dutta, D. (2011) · Estuarine Coastal and Shelf Science · doi:10.1016/j.ecss.2011.11.005 · Cited by 198 · see citing works
Lobell, D. B., Lesch, S. M., Corwin, D. L., et al. (2010) · Journal of Environmental Quality · doi:10.2134/jeq2009.0140 · Cited by 180 · see citing works
Self-citationMapping Soil Salinity Using Calibrated Electromagnetic Measurements
Lesch, S. M., Rhoades, J. D., Lund, L. J., et al. (1992) · Soil Science Society of America Journal · doi:10.2136/sssaj1992.03615995005600020031x · Cited by 178 · see citing works
Regional scale soil salinity evaluation using Landsat 7, western San Joaquin Valley, California, USA
Scudiero, E., Skaggs, T. H., & Corwin, D. L. (2014) · Geoderma Regional · doi:10.1016/j.geodrs.2014.10.004 · Cited by 177 · see citing works
Self-citationAssessment and field-scale mapping of soil quality properties of a saline-sodic soil
Corwin, D. L., Kaffka, S. R., Hopmans, J. W., Mori, Y., van Groenigen, J. W., van Kessel, C., Lesch, S. M., & Oster, J. D. (2003) · Geoderma · doi:10.1016/s0016-7061(03)00043-0 · Cited by 150 · see citing works
Self-citationThe Causes and Progression of Desertification
Geist, H. (2017) · Routledge eBooks · doi:10.4324/9781315240855 · Cited by 145 · see citing works
Corwin, D. L., Lesch, S. M., Oster, J. D., & Kaffka, S. R. (2005) · Geoderma · doi:10.1016/j.geoderma.2005.03.014 · Cited by 144 · see citing works
Self-citationApparent soil electrical conductivity mapping as an agricultural management tool in arid zone soils
Lesch, S. M., Corwin, D. L., & Robinson, D. A. (2004) · Computers and Electronics in Agriculture · doi:10.1016/j.compag.2004.11.007 · Cited by 144 · see citing works
Self-citationPatterson, L., Lutz, B., & Doyle, M. W. (2013) · Water Resources Research · doi:10.1002/2013wr014618 · Cited by 130 · see citing works
Detecting soil salinity with MODIS time series VI data
Zhang, T., Qi, J., Gao, Y., et al. (2015) · Ecological Indicators · doi:10.1016/j.ecolind.2015.01.004 · Cited by 125 · see citing works
Impacts of Sea Level Rise on the Coastal Zone of Bangladesh
Wallman, P. H. (2005) · Cited by 125 · see citing works
SYNTHESIS OF A SIX‐YEAR STUDY OF CALCAREOUS GRASSLAND RESPONSES TO IN SITU CO2ENRICHMENT
Niklaus, P. A., & Körner, C. (2004) · Ecological Monographs · doi:10.1890/03-4047 · Cited by 124 · see citing works
Remote Sensing of Soil Degradation: Introduction
Lobell, D. B. (2010) · Journal of Environmental Quality · doi:10.2134/jeq2009.0326 · Cited by 122 · see citing works
Connor, J. D., Schwabe, K., King, D., & Knapp, K. (2012) · Ecological Economics · doi:10.1016/j.ecolecon.2012.02.021 · Cited by 118 · see citing works
Soil Salinity Mapping by Multiscale Remote Sensing in Mesopotamia, Iraq
Wu, W., Al‐Shafie, W. M., Mhaimeed, A. S., et al. (2014) · IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · doi:10.1109/jstars.2014.2360411 · Cited by 114 · see citing works
Heil, K., & Schmidhalter, U. (2017) · Sensors · doi:10.3390/s17112540 · Cited by 114 · see citing works
Characterizing soil spatial variability with apparent soil electrical conductivity
Corwin, D. L., & Lesch, S. M. (2004) · Computers and Electronics in Agriculture · doi:10.1016/j.compag.2004.11.003 · Cited by 113 · see citing works
Self-citationImpact of climate change in Mediterranean aquaculture
Rosa, R., Marques, A., & Nunes, M. L. (2012) · Reviews in Aquaculture · doi:10.1111/j.1753-5131.2012.01071.x · Cited by 112 · see citing works
Sea Water Intrusion by Sea‐Level Rise: Scenarios for the 21st Century
Loáiciga, H. A., Pingel, T. J., & Garcia, E. S. (2011) · Ground Water · doi:10.1111/j.1745-6584.2011.00800.x · Cited by 112 · see citing works
Development and Evaluation of ENVIRO‐GRO, an Integrated Water, Salinity, and Nitrogen Model
Pang, X., & Letey, J. (1998) · Soil Science Society of America Journal · doi:10.2136/sssaj1998.03615995006200050039x · Cited by 105 · see citing works
Saline Agriculture. Salt‐tolerant Plants for Developing Countries
Rains, D. W. (1991) · Journal of Environmental Quality · doi:10.2134/jeq1991.00472425002000020031x · Cited by 94 · see citing works
Economic assessment of acquiring water for environmental flows in the Murray Basin*
Qureshi, M. E., Connor, J., Kirby, M., & Mainuddin, M. (2007) · Australian Journal of Agricultural and Resource Economics · doi:10.1111/j.1467-8489.2007.00383.x · Cited by 93 · see citing works
Scudiero, E., Skaggs, T. H., & Corwin, D. L. (2016) · Ecological Indicators · doi:10.1016/j.ecolind.2016.06.015 · Cited by 90 · see citing works
Self-citationIdso, S. B., & Kimball, B. (1993) · Global Biogeochemical Cycles · doi:10.1029/93gb01164 · Cited by 77 · see citing works
Climate Change, Soil Salinity, and the Economics of High-Yield Rice Production in Coastal Bangladesh
Dasgupta, S., Hossain, M. M., Huq, M., & Wheeler, D. R. (2014) · doi:10.1596/1813-9450-7140 · Cited by 76 · see citing works
Assessment of Groundwater Quality in the Gaza Strip, Palestine Using GIS Mapping
Shomar, B., Fakher, S. A., & Yahya, A. (2010) · Journal of Water Resource and Protection · doi:10.4236/jwarp.2010.22011 · Cited by 76 · see citing works
Derner, J. D., Johnson, H. B., Kimball, B. A., et al. (2003) · Global Change Biology · doi:10.1046/j.1365-2486.2003.00579.x · Cited by 73 · see citing works
Corwin, D. L., & Lesch, S. M. (2013) · Journal of Environmental and Engineering Geophysics · doi:10.2113/jeeg18.1.1 · Cited by 71 · see citing works
Self-citationSvobodová, E., Trnka, M., Dubrovský, M., et al. (2013) · Pest Management Science · doi:10.1002/ps.3622 · Cited by 62 · see citing works
Xu, C., Zeng, W., Huang, J., et al. (2016) · Remote Sensing · doi:10.3390/rs8010042 · Cited by 62 · see citing works
(Landscape-ecological impact of climatic change)
Turner, M. G. (1989) · doi:10.2172/5167676 · Cited by 61 · see citing works
Remote sensing is a viable tool for mapping soil salinity in agricultural lands
Scudiero, E., Corwin, D. L., Anderson, R. G., et al. (2017) · California Agriculture · doi:10.3733/ca.2017a0009 · Cited by 55 · see citing works
Self-citationFuzzy classification of JERS-1 SAR data: an evaluation of its performance for soil salinity mapping
Metternicht, G. I. (1998) · Ecological Modelling · doi:10.1016/s0304-3800(98)00095-7 · Cited by 54 · see citing works
Mapping Salinity in Three Dimensions using a DUALEM-421 and Electromagnetic Inversion Software
Zare, E., Huang, J., Santos, F. A. M., et al. (2015) · Soil Science Society of America Journal · doi:10.2136/sssaj2015.06.0238 · Cited by 53 · see citing works
Scenarios of climate change within the context of agriculture.
Jarvis, A., Ramirez, J., Anderson, B., et al. (2010) · CABI eBooks · doi:10.1079/9781845936334.0009 · Cited by 50 · see citing works
Evaluation of a GIS‐Linked Model of Salt Loading to Groundwater
Corwin, D. L., Carrillo, M. L. K., Vaughan, P. J., et al. (1999) · Journal of Environmental Quality · doi:10.2134/jeq1999.00472425002800020012x · Cited by 49 · see citing works
Self-citationNobi, N., & Gupta, A. (1997) · Ground Water · doi:10.1111/j.1745-6584.1997.tb00147.x · Cited by 49 · see citing works
Climate change and agricultural water demand: Impacts and adaptations
Mimi, Z. A., & Jamous, S. A. (2010) · African Journal of Environmental Science and Technology · doi:10.5897/ajest09.174 · Cited by 48 · see citing works
Hydro-Geochemical Characteristics of Groundwater Beneath the Gaza Strip
Al-Khatib, M., & Al-Najar, H. (2011) · Journal of Water Resource and Protection · doi:10.4236/jwarp.2011.35043 · Cited by 43 · see citing works
Corwin, D. L., & Lesch, S. M. (2014) · Geoderma · doi:10.1016/j.geoderma.2014.03.019 · Cited by 43 · see citing works
Self-citationField-Scale Apparent Soil Electrical Conductivity
Corwin, D. L., & Scudiero, E. (2016) · Methods of Soil Analysis · doi:10.2136/methods-soil.2015.0038 · Cited by 42 · see citing works
Self-citationAerts, J. C. J. H., Hassan, A. A., Savenije, H. H. G., et al. (2000) · Physics and Chemistry of the Earth Part B Hydrology Oceans and Atmosphere · doi:10.1016/s1464-1909(00)00014-9 · Cited by 41 · see citing works
Austin, J. M., Zhang, L., Jones, R. N., et al. (2009) · Climatic Change · doi:10.1007/s10584-009-9714-z · Cited by 41 · see citing works
Optimal Extraction of Groundwater in Gaza Coastal Aquifer
Qahman, K., Larabi, A., Ouazar, D., et al. (2009) · Journal of Water Resource and Protection · doi:10.4236/jwarp.2009.14030 · Cited by 39 · see citing works
Moving Forward on Remote Sensing of Soil Salinity at Regional Scale
Scudiero, E., Corwin, D. L., Anderson, R. G., et al. (2016) · Frontiers in Environmental Science · doi:10.3389/fenvs.2016.00065 · Cited by 34 · see citing works
Self-citationCorwin, D. L., Lesch, S. M., Oster, J. D., et al. (2008) · Journal of Environmental Quality · doi:10.2134/jeq2007.0140 · Cited by 31 · see citing works
Self-citationTrends in rainfall intensity for stormwater designs in Ontario
Vasiljević, B. M., McBean, E. A., & Gharabaghi, B. (2012) · Journal of Water and Climate Change · doi:10.2166/wcc.2012.125 · Cited by 27 · see citing works
Status of soil salinity in California
Backlund, & Hoppes, R. R. (1984) · DOAJ (DOAJ: Directory of Open Access Journals) · Cited by 26 · see citing works
The Impact of Climate Change and Soil Salinity in Irrigation Water Demand in the Gaza Strip
Ashour, E. K. (2012) · Journal of Earth Science & Climatic Change · doi:10.4172/2157-7617.1000120 · Cited by 24 · see citing works
Corwin, D. L. (2012) · Journal of Environmental Monitoring · doi:10.1039/c2em10796a · Cited by 19 · see citing works
Self-citationOverview of different aspects of climate change effects on soils
Pacific Northwest National Lab. (PNNL), R., Qafoku, N. P., & USDOE (2014) · doi:10.2172/1167316 · Cited by 18 · see citing works
Validation of the ANOCOVA model for regional‐scale EC a to EC e calibration
Corwin, D. L., & Lesch, S. M. (2016) · Soil Use and Management · doi:10.1111/sum.12262 · Cited by 15 · see citing works
Self-citationClimate Change and its Impacts – Current understanding, future directions
Schofield, N. (2011) · ANU Press eBooks · doi:10.22459/bf.05.2011.04 · Cited by 9 · see citing works
A Water Transfer and Agricultural Land Retirement in a Drainage Problem Area
Wichelns, D., & Cone, D. (2006) · Irrigation and Drainage Systems · doi:10.1007/s10795-006-9004-0 · Cited by 7 · see citing works
Use of Advanced Information Technologies for Water Conservation on Salt-Affected Soils
Corwin, D. L. (2015) · GIS applications in agriculture series · doi:10.1201/b18173-9 · Cited by 6 · see citing works
Self-citation
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Karunarathne, S., Walker, E., Sharma, D., Li, C., & Han, Y. (2023) · Journal of Zhejiang University-SCIENCE B · doi:10.1631/jzus.b2200552 · Cited by 18 · see citing works
“Winter wheat yield loss ranges from 2.9% to 34.4% in the USA, which translates to an average loss of USD 2.19 billion between 2007 and 2017 (Flessner et al., 2021).”
Influential
- Authors
- Corwin, D. L.
- Affiliations
- U.S. Salinity Laboratory (US)
- Corresponding author
- Corwin, Dennis L.
- ORCID
- Corwin, Dennis L.
- Venue
- European Journal of Soil Science
- Publisher
- Wiley
- Published
- 2020-08-03
- Volume
- 72
- Issue
- 2
- Pages
- 842-862
- ISSN
- 1351-0754 (ISSN-L)
- 1365-2389
- OpenAlex
- W3035216846
- Cited by
- 806
- References
- 89
- Citations by year
- 2026: 141 · 2025: 171 · 2024: 175 · 2023: 163 · 2022: 110 · 2021: 41 · 2020: 4
- FWCI
- 57.63
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- European Journal of Soil Science (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Engineering and Agricultural Innovations
- Physical Sciences › Environmental Science › Environmental Engineering › Soil Geostatistics and Mapping
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Irrigation Practices and Water Management
- Keywords
- climate change impacts, soil salinity, root zone salinity, saltwater intrusion, shallow water table, irrigation water quality, water reuse, proximal sensing, satellite remote sensing, salinity monitoring, rainfed agriculture, coastal agriculture, San Joaquin Valley, Red River Valley, Bangladesh, Gaza Strip
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