Association between climate indices, aridity index, and rainfed crop yield in northeast of Iran

Aval, Mohammad Bannayan; Sanjani, Sarah; Alizadeh, Amin; Lotfabadi, S Sadeghi; Mohamadian, Azadeh

doi:10.1016/j.fcr.2010.04.011

Cited by 169 publications

(83 citation statements)

References 34 publications

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“…Bannayan et al [48] reported that rainfed crop production is very vulnerable to drought conditions and usually suffers from its occurrence. Our results indicated that the risk periods of drought-induced yield loss were the anthesis-silking stage for maize, the jointing-booting stage for sorghum, the flowering-podding stage for soybean, and the sowing-milking stage for millet.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Drought Impact on Main Cereal Crops Using a Standardized Precipitation Evapotranspiration Index in Liaoning Province, China

et al. 2016

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Abstract:Global warming has resulted in increasingly frequent and severe drought and/or precipitation events. Severe drought limits crop water availability and impacts agricultural productivity and socioeconomic development. To quantify drought-induced yield loss during the main crop stages in Liaoning province, China, aspects of drought episodes (magnitude, duration, and frequency) were investigated during the period 1960-2015 using the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), respectively. Then the relationship between the SPI/SPEI and the standardized yield residuals series (SYRS), and the drought-induced yield loss were analyzed for maize, rice, sorghum, soybean, and millet. Liaoning underwent a province-wide increase in temperature, reduced precipitation, and reduced reference crop evapotranspiration. As expected, Liaoning experienced province-wide meteorological drying trends during the main crop growth stages, while the drought frequency, duration, and magnitude were not as serious as revealed by using the SPI. As compared to the SPI, the SPEI considering potential evapotranspiration explained 39%-78% yield variability of SYRS and evaluated the drought-induced yield loss more accurately. The increased drought frequency mainly affected the rain-fed crops (maize, sorghum, soybean, and millet), while it did not reduce irrigated rice production. No major impact was exerted on the rain-fed crops caused by mild drought. However, severe drought (SPEI < −1.0) markedly reduced yield performance, in particular at the anthesis-silking stage for maize, the jointing-booting stage for sorghum, the flowering-podding stage for soybean, and the sowing-milking stage for millet. It is concluded that the SPEI is a more useful measure for the identification of drought episodes and the assessment of drought impact on agricultural production in Liaoning province.

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Section: Discussionmentioning

confidence: 99%

Assessment of Drought Impact on Main Cereal Crops Using a Standardized Precipitation Evapotranspiration Index in Liaoning Province, China

et al. 2016

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“…However, this method emphasizes the difference between T min and the dew point temperature without considering water supply. The ratio of E p to P (UNEP, 1992;Arora, 2002;Bannayan et al, 2010) can be used to represent drought by estimating how much evaporative demand can be met by P. This method is widely used and is therefore applied here to calculate DI :…”

Section: Drought Indexmentioning

confidence: 99%

Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Liang

Liu

et al. 2013

Int. J. Climatol.

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Changes observed in nine meteorological variables obtained from the Three Rivers Source Region (TRSR) between 1960 and 2009 were investigated using a fitted linear model, Mann-Kendall test, moving t-test, and Morlet wavelet. Analysis of the regionally scaled annual series from 1960 to 2009 showed that minimum (T min ), maximum (T max ), mean (T mean ) air temperature, precipitation (P ), potential evaporation (E p ), and sunshine hours (SH ) increased while relative humidity (RH ) and wind speed (W ) decreased. Trends were significant at a 99% confidence level for air temperature and at a 95% confidence level for E p and W . With the exception of SH , regional scale changes observed in all variables in the past decade (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)) when compared to climate norms (means of all climatic variables) from 1961 to 1990 were consistent with their corresponding linear trends from 1960 to 2009. T max , T mean , and drought index (DI ) exhibited one climate jump, T min and RH two, and SH , E p , and W three at a significance level of α = 0.05. On a regional scale, the period from 1986 to 1997 experienced a warmer, drier climate due to higher than average air temperatures, lower P , and higher DI compared to means from 1960 to 2009. The majority of meteorological variables of the TRSR experienced significant (α = 0.05) short periodical cycling between 2 and 5 years. In terms of spatial distribution, seven out of 12 meteorological stations underwent warmer and wetter periods from 1960 to 2009, whereas the other five situated in the southeastern section of the TRSR underwent warmer, drier periods.

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“…Among all human activities, agriculture is the most climate dependent (Bannayan and Hoogenboom, 2008). The concern on climate and its effects on agricultural productions have stimulated research on the analysis of climate and agricultural crop productivity (Bannayan et al, 2010). It is realized that climate impose a wide range of direct and indirect impacts on crop production thus weather fluctuations play a significant role on crop growth and yield.…”

Section: Introductionmentioning

confidence: 99%

Climatic Suitability of Growing Summer Squash (Cucurbita pepo L.) as a Medicinal Plant in Iran

2011

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Diversification of production by including a broader range of plant species, can significantly contribute to improve health and nutrition, livelihoods, household food security and ecological sustainability. Exploring the climate impact on any given crop is one of the first priorities to find new suitable areas for production and management of new crops. Summer squash (Cucurbita pepo L.) is an economically valuable plant with various medicinal potentials. In order to investigate summer squash cultivation feasibility under Iran's climate, three main agricultural regions (Azerbaijan, Khorasan and central part of Iran (Fars and Isfahan)) were selected. These regions suitability for summer squash cultivation were evaluated by considering three vital climate variables encompass temperature, precipitation, and sunshine hours. These regions show distinct and representative climatic conditions of Iran. Annual and growing season average of maximum, minimum, mean temperature, precipitation, and sunshine hours were calculated (May-September) for all locations with 44 years historical weather data . Climatic demands of summer squash were determined by four years field studies at four different locations in Iran. Our results showed Azerbaijan region has a suitable condition for this crop cultivation especially from precipitation and temperature perspectives. Central part of Iran and Khorasan were also found as partly suitable locations however as they are near to deserts with hotter and drier climate, there might be some other crops considered as priorities in these areas.

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Association between climate indices, aridity index, and rainfed crop yield in northeast of Iran

Cited by 169 publications

References 34 publications

Assessment of Drought Impact on Main Cereal Crops Using a Standardized Precipitation Evapotranspiration Index in Liaoning Province, China

Assessment of Drought Impact on Main Cereal Crops Using a Standardized Precipitation Evapotranspiration Index in Liaoning Province, China

Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Climatic Suitability of Growing Summer Squash (Cucurbita pepo L.) as a Medicinal Plant in Iran

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