A district-level analysis for measuring the effects of climate change on production of rice: evidence from Southern India

Saravanakumar, V.; Lohano, Heman D.; Rudrasamy, Balasubramanian

doi:10.1007/s00704-022-04198-y

Cited by 11 publications

(8 citation statements)

References 52 publications

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“…It is found that the relationship between the yield per hectare and rainfall is quadratic; i.e., as rainfall increases, yield per hectare initially increases, reaches the peak, and then declines. The results are in line with the findings of Saravanakumar et al [8] in districts of Tamil Nadu. An increase in annual mean temperature above the optimal level of temperature for paddy rice production resulted in a decrease in yield significantly.…”

Section: Climate Induced Changes In the Rice Yieldsupporting

confidence: 92%

Effect of Climate Induced Changes in the Ecosystem Services of Chilika Lake Wetlands of Odisha from the Perspective of Agriculture and Fisheries

Tomy

Mishra

Dash

et al. 2022

IJECC

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Aims: The aim of the study is to find out the effect of climate induced changes in the ecosystem services of Chilika Lake of Odisha. Study Design: The study has been conducted in Chilika Lake, including the peripheral districts Khurda, Puri and Ganjam. Secondary data have been used for rice yield, fish production and for various weather parameters. Methodology: The statistical analysis like Mann-kendall’s test is used for trend analysis, Fixed panel data regression to find out the influence of climatic parameters on yield of paddy and multivariate multiple regression to study the effect of climate change on fish production has been used. Results: The fixed effect model was found relevant during panel data regression. The weather parameters annual mean rainfall and soil profile moisture were found positively significant at one per cent level of significance in influencing the yield of paddy. Whereas annual mean temperature, squared rainfall and root zone wetness were found negatively significant. Both the temperature and root zone wetness were significant at one and five percent level of significance respectively. Squared rainfall term is found negatively significant at the five percent level of significance which shows a quadratic relationship between rainfall and yield. The estimates of fish production, shrimp and crab production in the Chilika lake revealed that the water salinity and water temperature were found significant at five and ten percent level of significance respectively in the case of fish production. The water salinity founded negatively influences fish production. There were no parameters were found significant in the shrimp production in the lake for the period of 2000 to 2015. The variables water pH and dissolved oxygen were found positively significant at ten and five percent in influencing the Crab production of the lake. The parameter water transparency was found insignificant for all three independent variables viz. fish, shrimp and crab production. Conclusion: It is found that annual mean rainfall and soil profile moisture have a significant positive influence of paddy whereas temperature and root zone wetness have a significant negative influence on paddy yield. Only water salinity was found negatively significant for fish production. The parameters, water pH and dissolved oxygen were found to have a positive influence on Crab production in Chilika lake.

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Section: Climate Induced Changes In the Rice Yieldsupporting

confidence: 92%

Effect of Climate Induced Changes in the Ecosystem Services of Chilika Lake Wetlands of Odisha from the Perspective of Agriculture and Fisheries

Tomy

Mishra

Dash

et al. 2022

IJECC

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“…However, the farming community, particularly in developing nations, faces significant challenges due to shifting weather patterns and a changing climate. Therefore, to provide a favourable microclimate to crops, protected cultivation would be a feasible alternative, mitigating climate risk [6,7]. These challenges pose formidable obstacles, especially for those with limited capacity to adopt effective adaptation strategies [8].…”

Section: Introductionmentioning

confidence: 99%

Economic Feasibility of Carnation Cultivation in the Nilgiris District of Tamil Nadu, India

Balamurugan,

Senthilnathan,

Vidhyavathi

et al. 2023

IJECC

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Aim: To estimate the economics of Carnation Production under Protected cultivation, to estimate the feasibility of the protected cultivation of Carnation in the study district, and to assess the constraints faced by the farmers in scaling up the protected cultivation in the study district and to suggest suitable solutions. Study Design: An ex-post-facto study was conducted, among the carnation cultivators of Nilgiris district of Tamil Nadu. Place and Duration of Study: The Nilgiris district was purposively selected for the study as it possesses the largest area under carnation flower cultivation in Tamil Nadu and the study was conducted between April 2023 and June 2023. Methodology: The present study employed a multi-stage purposive cum random sampling technique to select the district, blocks, villages, and respondents for research. The Nilgiris district was purposefully chosen for its significance in carnation flower cultivation within Tamil Nadu. Specifically, Kothagiri, Coonoor, and Uthagai blocks of the Nilgiris district were selected as focal areas for this investigation. Within each of these selected blocks, two villages were chosen, resulting in a total of six villages as study locations. To ensure representation, 30 farmers engaged in carnation cultivation were then selected, with a proportion of 5 farmers per village. The respondents were interviewed with a pre-structured questionnaire through a random approach. Furthermore, the study incorporated feasibility analysis, which included evaluating key financial metrics such as the Benefit-Cost Ratio, Net Present Worth, and Internal Rate of Return. These financial analyses were conducted to assess the economic viability and potential returns associated with carnation cultivation in the Nilgiris district. Results: The results reveal that the net return/ 4000 m2 is Rs. 16.67 lakhs. The BCR was found to be 1.40 (Financially feasible). The NPV was found to be Rs. 70.35 lakhs and the IRR was estimated to be 40.00 per cent. Major constraints encountered by the farmers include the higher cost of polyhouse material and construction, followed by the higher cost of the seedlings and the poor availability of skilled labour. Conclusion: Protected cultivation technology unlocks the potential to produce crops with high productivity and superior quality.

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“…Though there is an increasing demand for urban lakes due to offering various ecosystem services, it is being damaged by anthropogenic activities (Inostroza, 2014), climate change (Schmid et al, 2014;Sarwary et al, 2021;Saravanakumar et al, 2022), industrialisation, improper infrastructure plan and development, encroachment, and mixing of domestic sewage. In terms of institutional constraints, stakeholders and managers involved in urban lakes have often faced numerous problems such as a lack of funding for maintenance and monitoring, and difficulty in controlling multiple drivers of water degradation (Birch and McCaskie, 1999).…”

Section: Introductionmentioning

confidence: 99%

Not Too Small to Benefit Society: Economic Valuation of Urban Lake Ecosystems Services

Saravanakumar,

Aswath,

Senthikumar

et al. 2023

IJAE

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Although the importance of urban lake ecosystem services is widely recognised, the integration of associated values and benefits into decision-making is still under-developed. Therefore, this study has assessed the use and nonuse values of two urban lakes viz., Ukkadam Big Lake (UBL) and Sulur Lake (SL) in Coimbatore, Tamil Nadu. Primary data were collected from 208 respondents, comprising fishermen, local residents, and visitors, during 2021-22. The estimated total economic value (TEV) was Rs. 107.96 lakhs and Rs. 77.15 lakhs, for UBL and SL, respectively, of which, three-fourth of the value was accounted by use values and the remaining one-fourth by nonuse value services. Among use values, the provisional services were estimated at current market prices ranging from 8 to 11 per cent of TEV. The value of recreational services was assessed by the travel cost method and the estimated value was Rs. 75.85 lakhs and Rs. 49.92 lakhs for UBL and SL. The non-use values were assessed using the contingent valuation method, and the mean willingness to pay was found to be Rs. 979.63 and Rs. 801.23, respectively, for UBL and SL per annum. Logit regression estimates indicated that age, education, and income significantly influenced the willingness to pay for the lake's services. It is concluded that all stakeholders, including the government, should consider the conservation of the lakes by making the necessary efforts to charge entrance fees, desilt the lake, install more sewage plants, and allocate a sufficient budget under the smart city plan.

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A district-level analysis for measuring the effects of climate change on production of rice: evidence from Southern India

Cited by 11 publications

References 52 publications

Effect of Climate Induced Changes in the Ecosystem Services of Chilika Lake Wetlands of Odisha from the Perspective of Agriculture and Fisheries

Effect of Climate Induced Changes in the Ecosystem Services of Chilika Lake Wetlands of Odisha from the Perspective of Agriculture and Fisheries

Economic Feasibility of Carnation Cultivation in the Nilgiris District of Tamil Nadu, India

Not Too Small to Benefit Society: Economic Valuation of Urban Lake Ecosystems Services

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