scholarly journals Impact of extreme weather events in Indian agriculture : Enhancing the coping capacity of farm families

MAUSAM ◽  
2021 ◽  
Vol 67 (1) ◽  
pp. 1-4
Author(s):  
M. S. SWAMINATHAN ◽  
R. RENGALAKSHMI

In the context of climate change, extreme weather events are emerging as a potential threat to food security and farmers livelihoods. Considerable proportion of the revenue is being spent in addressing the damages caused due to these intense events. Extreme precipitation (both flood and drought) and temperature are crucial in causing detrimental impact on crop yield and production. Particularly, the impacts of extreme events will be more in rainfed agriculture due to interannual precipitation variability over the growing season in terms of crop yield and yield quality. Several studies have forecasted its increased occurrence and estimated its impact on agricultural productivity. Nevertheless, field level operational strategies to address these risks are easily not accessible to men and women farmers in that specific context. Since these events are localized in geographical scale, decentralised approach in the framework of ‘preparedness and recovery’ is suggested to combat the loss of lives, livelihoods and assets of men and women farmers. In this backdrop, the paper suggests few simple practical decentralised strategies to support the vast majority of small holders in our country.

2020 ◽  
Author(s):  
Matias Heino ◽  
Weston Anderson ◽  
Michael Puma ◽  
Matti Kummu

<p>It is well known that climate extremes and variability have strong implications for crop productivity. Previous research has estimated that annual weather conditions explain a third of global crop yield variability, with explanatory power above 50% in several important crop producing regions. Further, compared to average conditions, extreme events contribute a major fraction of weather induced crop yield variations. Here we aim to analyse how extreme weather events are related to the likelihood of very low crop yields at the global scale. We investigate not only the impacts of heat and drought on crop yields but also excess soil moisture and abnormally cool temperatures, as these extremes can be detrimental to crops as well. In this study, we combine reanalysis weather data with national and sub-national crop production statistics and assess relationships using statistical copulas methods, which are especially suitable for analysing extremes. Further, because irrigation can decrease crop yield variability, we assess how the observed signals differ in irrigated and rainfed cropping systems. We also analyse whether the strength of the observed statistical relationships could be explained by socio-economic factors, such as GDP, social stability, and poverty rates. Our preliminary results indicate that extreme heat and cold as well as soil moisture abundance and excess have a noticeable effect on crop yields in many areas around the globe, including several global bread baskets such as the United States and Australia. This study will increase understanding of extreme weather-related implications on global food production, which is relevant also in the context of climate change, as the frequency of extreme weather events is likely to increase in many regions worldwide.</p>


2010 ◽  
Vol 14 (4) ◽  
pp. 362-375 ◽  
Author(s):  
Gayan Wedawatta ◽  
Bingunath Ingirige ◽  
Dilanthi Amaratunga

Wider scientific community now accept that the threat of climate change as real and thus acknowledge the importance of implementing adaptation measures in a global context. In the UK, the physical effects of climate change are likely to be directly felt in the form of extreme weather events, which are predicted to escalate in number and severity in future under the changing climatic conditions. Construction industry; which consists of supply chains running across various other industries, economies and regions, will also be affected due to these events. Thus, it is important that the construction organisations are well prepared to withstand the effects of extreme weather events not only directly affecting their organizations but also affecting their supply chains which in turn might affect the organisation concerned. Given the fact that more than 99% of construction sector businesses are SMEs, the area can benefit significantly from policy making to improve SME resilience and coping capacity. This paper presents the literature review and synthesis of a doctoral research study undertaken to address the issue of extreme weather resilience of construction sector SMEs and their supply chains. The main contribution of the paper to both academia and practitioners is a synthesis model that conceptualises the factors that enhances resilience of SMEs and their supply chains against extreme weather events. This synthesis model forms the basis of a decision making framework that will enable SMEs to both reduce their vulnerability and enhance their coping capacity against extreme weather. The value of this paper is further extended by the overall research design that is set forth as the way forward. Santruka Gana daug mokslininku jau sutinka, kad klimato kaitos gresme yra reali, taigi pripažista, kaip pasauliniame kontekste svarbu diegti prisitaikymo priemones. Tiketina, kad Jungtineje Karalysteje fizinis klimato kaitos poveikis bus tiesiogiai jaučiamas per ekstremalius meteorologinius reiškinius. Prognozuojama, kad kintant klimato salygoms ju skaičius ir intensyvumas ateityje dides. Tokie reiškiniai paveiks ir statybu pramone, kuria sudaro per kitas ivairiausias pramones šakas, ūkius ir regionus einančios tiekimo grandines. Taigi svarbu, kad statybu organizacijos būtu tinkamai pasiruošusios atlaikyti ekstremalius meteorologinius reiškinius, kurie daro tiesiogine itaka ne tik šioms organizacijoms, bet ir ju tiekimo grandinems, kurios savo ruožtu gali paveikti atitinkama organizacija. Daugiau kaip 99 proc. statybu sektoriuje veikiančiu imoniu priklauso SVV kategorijai, tad šiai sričiai išties praverstu politika, gerinanti SVV atsparuma ir gebejima susitvarkyti. Šiame darbe pateikiama literatūros apžvalga ir trumpai pristatomas daktaro disertacijos tyrimas, kuriuo siekta išnagrineti statybu sektoriaus SVV ir ju tiekimo grandiniu atsparuma ekstremaliems meteorologiniams reiškiniams. Pagrindinis darbo indelis, pravartus ir mokslininkams, ir praktikams, tai sintezes modelis, kuriame suformuluojami veiksniai, didinantys SVV ir ju tiekimo grandiniu atsparuma ekstremaliems meteorologiniams reiškiniams. Šis sintezes modelis yra sprendimu priemimo sistemos pagrindas, o sistema SVV leis ne tik mažinti pažeidžiamuma, bet ir didinti gebejima susitvarkyti esant ekstremaliems meteorologiniams reiškiniams. Šio darbo verte dar labiau padidina bendras tyrimo modelis, pateikiamas kaip žingsnis pirmyn.


MAUSAM ◽  
2021 ◽  
Vol 71 (2) ◽  
pp. 275-284
Author(s):  
SRIVASTAVA A K ◽  
YOGRANJAN YOGRANJAN ◽  
BAL LALIT M

The Bundelkhand Agroclimatic Zone of Madhya Pradesh has witnessed many extreme weather events in recent decades like excessive hotness, dryness, coldness and number of consecutive drought years. Drought and water scarcity are the major resource limiting factors of this zone. There was sharp increase in numbers of hot days during last decade (2001-10) in Chhatarpur and Datia districts. The numbers of heavy rainfall days sharply decreased at Tikamgarh and Chhatarpur districts while frost days increased in Datia during last decade. The micro level variability of drought was much higher than the temporal scale variability. The occurrence of drought at micro level in the recent decade was much higher. The frequent occurrence of drought during recent past had increased the soybean and paddy yield variability in this zone. This paper attempts to present impact of variability of extreme weather events on paddy and soybean yield and also rural livelihood. The paddy and soybean yield were normally affected by number of heavy rainy days and number of rainy days. The number of heavy rainy days greater than equal to 6 days in Tikamgarh, 7 days in Chhatarpur per year were may be required for sustainable paddy production. It is observed that in those districts where the temporal variation in number of rainy days is decreasing, the decrease in number of rainy days below 5 days per year was crucial for sustainable yield. Whereas in the districts where little temporal variation in number of rainy days observed, a particular number of heavy rainy days is not necessary for adequate crop yield. In Datia and Chhatarpur district, the animal discomfort days increased over the decades.


2018 ◽  
Author(s):  
Peter C. Balash, PhD ◽  
Kenneth C. Kern ◽  
John Brewer ◽  
Justin Adder ◽  
Christopher Nichols ◽  
...  

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