Extreme rainfall indices and its impact on rice productivity—A case study over sub-humid climatic environment

Subash, N.; Singh, S. S.; Priya, N. Gowri

doi:10.1016/j.agwat.2011.04.003

Cited by 33 publications

(15 citation statements)

References 34 publications

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“…As a result, there are a variety of definitions for climate extremes [14,48]. The ETCCDI has developed and recommended 27 core climate indices [12], which have been widely used [2,4,22,48,49] and adopted by the Fifth Assessment Report of Intergovernmental Panel on Climate Change [1]. Seven monthly indices of the recommended 27 climate indices were excluded, and one additional index of hot days (SU35) was included.…”

Section: Definitions and Calculations Of The Climate Indicesmentioning

confidence: 99%

Climate Extremes and Their Impacts on Interannual Vegetation Variabilities: A Case Study in Hubei Province of Central China

et al. 2018

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As the frequency and intensity of climate extremes are likely to be substantially modified in upcoming decades due to climate warming, an evaluation of the response of interannual vegetation variabilities to climate extremes is imperative. This study comprehensively analyzed the spatio-temporal variabilities of 21 temperature and precipitation indices across Hubei Province in Central China based on daily meteorological records for the period 1961-2015. To quantify the sensitivity of the vegetation to climate indices in the study area, we correlated climate indices with three vegetation indicators: leaf area index, normalized difference vegetation index, and gross primary productivity. The results indicated that warm-related indices exerted considerable increasing trends, especially for summer days at a rate of 0.35 days year −1 (p < 0.01). In addition, the trends of 18 indices during 1982-2015 were larger than those during 1961-2015, indicating accelerated climate changes in Hubei Province. Spatially, extreme precipitation showed increases in the eastern regions of the study area and decreases in the western regions. Correlation analyses revealed that warm anomalies of the Atlantic Multidecadal Oscillation resulted in extreme warm conditions and extreme precipitation in the study area. Stepwise linear regression analyses identified three temperature indices and three precipitation indices, which were mostly correlated with the three ecosystem variables at the site scale. Further multiple regressions demonstrated the main negative impacts caused by frost days, warm spell duration, extremely heavy precipitation, and consecutive dry days on the terrestrial ecosystem in Hubei Province. Our study provides an improved understanding of the effects of climate extremes on terrestrial ecosystems and can also offer a basis for the management of mitigating damage from climate extremes.

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Section: Definitions and Calculations Of The Climate Indicesmentioning

confidence: 99%

Climate Extremes and Their Impacts on Interannual Vegetation Variabilities: A Case Study in Hubei Province of Central China

et al. 2018

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“…Krishnakumar et al [13] found a significant decline in rainfall during the southwest monsoon and an increase during the post-monsoon season over Kerala. Subash et al [14] investigated rainfall trends at four stations namely Madhepura, Sabour, Samastipur and Patna and found an upward annual rainfall trend over all the stations except Samastipur. Patra et al [15] reported long term (1871-2006) insignificant downward trend of annual as well as monsoon rainfall, whereas an upward trend in post-monsoon season over Orissa.…”

Section: Introductionmentioning

confidence: 99%

Long Term Spatiotemporal Variability in Rainfall Trends over the State of Jharkhand, India

Sharma

Singh

2017

Climate

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Abstract:The current study was conducted to examine the impact of climate change on rainfall in Jharkhand state of India. It deals with the analysis of the historical spatiotemporal variability of rainfall on the annual, seasonal and monthly scale in 18 districts of the state Jharkhand over a period of 102 years . Mann-Kendall trend test and Sen's slope method were applied to detect trends and the magnitude of change over the time period of 102 years . Mann Whitney Pettit's method and Cumulative deviations test were applied for detection of shift point in the series. The results obtained year 1951 to be the most probable shift point in annual rainfall. The trend analysis along with the percent change for the data series before and after the shift point was also done. A significant downward rainfall trend was found in annual, monsoon and winter rainfall over the period of 102 years. The maximum decrease was found for the Godda (19.77%) and minimum at Purbi Singhbum station (1.95%). Trend analysis before shift point, i.e., during 1901-1951 showed an upward trend in annual rainfall and after shift point a downward trend. The trend analysis for entire Jharkhand demonstrated a significant downward trend in annual and monsoon rainfall with a decrease of 14.11% and 15.65% respectively. A downward trend in seasonal rainfall will have a more pronounced effect on agricultural activities in the area as it may affect the growth phase of the kharif crops (May-October) in the region.

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“…Pemanasan global memicu terjadinya perubahan iklim yang berdampak terhadap munculnya cuaca ekstrim. Peningkatan insiden cuaca ekstrim berpotensi mengganggu stabilitas produksi padi (Subash et al 2011;Dulbari et al 2017a). Deraan cuaca ekstrimdapat menyebabkan tanaman padi rebah sebelum dipanen dan dapat mengakibatkan penurunan kualitas hasil (Dulbari et al 2018b).…”

Section: Pendahuluanunclassified

Mekanisme Morfologi dan Fisiologi Tanaman Padi pada Kondisi Rebah dan Strategi Adaptasinya

Dulbari¹,

Sulistyono²,

Koesmaryono³

2019

j.ilm.inov.

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Extreme weather incident refers to high rainfall and strong winds have been speculated detriment on rice production. However, study on morphological and physiological mechanism, and its adaptation strategy on lodging are rarely reported. Thus, three experiments were conducted in Sawah Baru, Leuwikopo, and Lampung Province, Indonesia from January 2016 to June 2017. The results showed that extreme weather caused rice plant lodged on research area of 27.6% with production loss up to 11.89%. Morphology and physiological adaptations seemed important aspect in responses to extreme weather treatment. Biochemistry composition changed after lodging, especially fatty acid, terpene, alkane, and steroid. Lodging increased total biochemistry compound more than 48% of normal plant. Unlike marked production loss in the plot experiment, in the field, impact of extreme weather on reduction of rice production in Lampung Province was low, 1.03%. Shifting on rice production among agroclimates, minimized the impact of the extreme weather. It is likely that local ability to maintain annual production improvement by more than 5% through expansion of irrigated land, high yielding varieties and inputs subsidies were important factor as local strategy to adapt to extreme weather incident in Lampung. Keywords: lodging, stomata, photosynthesis, fatty acid, rice production

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Extreme rainfall indices and its impact on rice productivity—A case study over sub-humid climatic environment

Cited by 33 publications

References 34 publications

Climate Extremes and Their Impacts on Interannual Vegetation Variabilities: A Case Study in Hubei Province of Central China

Climate Extremes and Their Impacts on Interannual Vegetation Variabilities: A Case Study in Hubei Province of Central China

Long Term Spatiotemporal Variability in Rainfall Trends over the State of Jharkhand, India

Mekanisme Morfologi dan Fisiologi Tanaman Padi pada Kondisi Rebah dan Strategi Adaptasinya

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