Climate change impacts on crop yield, crop water productivity and food security – A review

Kang, Yinhong; Khan, Shahbaz; Ma, Xiaoyi

doi:10.1016/j.pnsc.2009.08.001

Cited by 781 publications

(433 citation statements)

References 64 publications

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“…[18] reports that crop yield is more sensitive to the precipitation than temperature, hence the need to give adequate attention to the length of growing season in all affected areas; the observed variability in the length of the growing season cannot be modified in any way but can be adapted to by the practice of climate smart production systems and strategies. One of such strategies lies in the choice of crops to plant; because of the reducing length of growing season, certain crops may no longer be supported by rainfed production, necessitating a change in the cropping calendar.…”

Section: Food Security Impact Of Variability In the Length Of Growingmentioning

confidence: 99%

Analysis of onset and cessation of rainfall in southwest nigeria: food security impact of of variability in the length of growing season

Sobowale¹,

Sajo²,

Ayodele³

2016

HAE

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The analysis of onset and cessation of rainfall for selected locations in South west Nigeria was carried out using daily meteorological data for five synoptic stations (Ikeja, Abeokuta, Ondo, Ibadan and Osogbo) in the region. The FAO Rainfall-Evapotranspiration model was used to elucidate the length of growing season and the impact of climate change on climatic variables and agricultural productivity. Results revealed that the wet season lasts from March to November within the period (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014). The onset and cessation dates varied across the five locations that were considered; Ibadan and Ondo had an early onset of rain while Ondo and Oshogbo had a late cessation, while other stations considered had similar onset and cessation days. The length of the growing season range from 219 -228 days within the region, this suggests the types of crops that can be supported by the rain fed cropping system predominantly practiced in the region and the number of growing cycles that can be accommodated. The study also revealed that weekly analysis of data gave better result than monthly analysis, while daily analysis did not lead to any useful results. The results are of inestimable value for the planning, organization and execution of agricultural activities in the region and in areas of similar climate around the world.

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Section: Food Security Impact Of Variability In the Length Of Growingmentioning

confidence: 99%

Analysis of onset and cessation of rainfall in southwest nigeria: food security impact of of variability in the length of growing season

Sobowale¹,

Sajo²,

Ayodele³

2016

HAE

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“…Representative Concentration Pathway RCP 4.5 represents a future of moderate climate mitigation policy, and RCP 8.5 represents a future of no climate policy. Crop productivity is expected to be affected by these changes (Kang et al, 2009;Lobell and Gourdji, 2012;Challinor et al, 2014). Climate changes also have the potential to alter the water balance and water-use efficiency of existing cropping systems (Marshall et al, 2015;Yang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Projected Dryland Cropping System Shifts in the Pacific Northwest in Response to Climate Change

et al. 2017

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“…Climate change may increase or decrease the crop yield depending on the latitude of the area and irrigation application. Increasing temperature and varying precipitation may decrease the crop productivity in future [18]. Temperature could be an impactful parameter which affects crop yield all over the world.…”

Section: Global Scenariomentioning

confidence: 99%

“…Extreme maximum and minimum temperature showed an increasing trend in the southern part whereas decreasing trend in the northern part of India [20]. Research studies show that with the increase in temperature, crop productivity is likely to decrease in future [18]. Hence, there is a need to study the dependency of temperature on crop productivity, stability, yield and quality to uplift the country's economy.…”

Section: Indian Scenariomentioning

confidence: 99%

Effect of Global warming on Indian Agriculture

S¹,

Rohit²

2017

J Climatol Weather Forecasting

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Agriculture is the backbone of Indian economy which in turn relies on the monsoon season. Rising global temperature is not only causing climate change but also contributing to the irregular rainfall patterns. Uneven rainfall patterns, increased temperature, elevated CO 2 content in the atmosphere are important climatic parameters which affects the crop production. Research studies indicate that weathering parameters influence strongly (67%) compared to other factors like soil and nutrient management (33%) during the cropping season. The Intergovernmental Panel on Climate Change (IPCC) projected that the global mean surface temperature will likely rise and may result into uneven climatic changes. This rising temperature may affect crop yield at large scale. It has been reported over 20th century that rising temperature plays an important role towards global warming as compared to precipitation. Researchers have confirmed that crop yield falls by 3% to 5% for every 1°F increase in the temperature. In India, crop production may be divided into two seasons: Kharif (influenced by south-west monsoon) and rabi (mostly influenced by north-east monsoon). Present study shows that the crop production is dependent on temperature. Temperature vs. crop production shows a funnel shape for all the seasons. For the lower temperature both the properties are almost linearly correlated. In rabi, at the beginning production show a negative trend with temperature which slowly converts to the positive trend. In kharif that negative trend is not visible. At higher temperatures production increases for both the seasons but with large scattering. The findings may be helpful to study the effect of climate change on the crop production.

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Climate change impacts on crop yield, crop water productivity and food security – A review

Cited by 781 publications

References 64 publications

Analysis of onset and cessation of rainfall in southwest nigeria: food security impact of of variability in the length of growing season

Analysis of onset and cessation of rainfall in southwest nigeria: food security impact of of variability in the length of growing season

Projected Dryland Cropping System Shifts in the Pacific Northwest in Response to Climate Change

Effect of Global warming on Indian Agriculture

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