Xây dựng mô hình hỗ trợ bố trí đất nông nghiệp - Trường hợp nghiên cứu ở huyện Mỹ Xuyên, tỉnh Sóc Trăng

Thao, Nguyen Hong; Trung, Nguyễn Hiếu; Trí, Lê Quang

doi:10.22144/ctu.jsi.2017.065

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…The agricultural crops are only influenced by the natural hazards during their cultivated durations which are represented by their cropping calendars. The major land-use types in My Xuyen district are agriculture and aquaculture, consisting of intensive rice farming, intensive shrimp farming and rice-shrimp farming (Thảo et al 2017). Therefore, a temporal analysis is important for the hazard assessment and its temporal resolution should be fine enough to present seasonal variations of the cropping systems.…”

Section: Multiple Natural Hazard Assessmentmentioning

confidence: 99%

“…In addition, a structure such as sluice gates is a common measure to prevent saline intrusion in coastal areas. Second, there are some solutions to reduce vulnerability of rice-based cropping systems, including using salt-tolerant varieties, adjusting cropping calendar and changing to other agricultural crops (Renaud et al 2015;Thảo et al 2017). The results of risk assessment can help the local community become more resilient in rice cultivation to the natural hazardous events.…”

Section: Vulnerabilitymentioning

confidence: 99%

See 1 more Smart Citation

Temporal Analysis for Multi-hazard Risk Assessment of Rice Cultivation in Coastal Areas: A Case Study of Soc Trang, Vietnam

Vo¹,

Nguyen²,

Linh³

2021

Preprint

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Rice is an important human crop and rice cultivation is threatened due to natural disasters, leading to negative effects on national and global food security. The natural disasters, such as tropical cyclones and saline intrusion, have dramatic influences in coastal regions. To investigate possible impacts of these disasters on rice cultivation, it needs an efficient tool to assess potential disasters impacts and a risk index is highly applicable. Therefore, this study aims at establishing a risk assessment of rice production in coastal areas under effects of tropical cyclones and saline intrusion. We adopted risk definition introduced by IPCC (2014) in which risk is a function of hazard, exposure and vulnerability. Multiple hazards of tropical cyclones and saline intrusion were indicated by their frequency and severity at some critical levels of 25%, 50% and >50% rice yield reduction. Each hazard was weighted by its damage on rice yield. Exposure and vulnerability of rice crops are evaluated at different growing phases. Tropical cyclone hazard index was ranked high and very high in the wet season while salinity hazard index was ranked very high in the dry season. Due to the combined effects of tropical cyclones and salinity, rice crop is highly susceptible during the reproduction phase and at the panicle initiation stage particularly. Based on the cropping calendar of My Xuyen, the period of October-November was the very high vulnerability period since it had the largest rice cultivable area and rice crops were at the reproduction phase. This result shows that rice crops are at high risk in October and November. Noticeably, saline intrusion reaches the highest level in April and May, but no risk is at this period because of no rice crop cultivated. This can reflect a measure to reduce risk by adjusting the cropping calendar.

show abstract

Section: Multiple Natural Hazard Assessmentmentioning

confidence: 99%

Section: Vulnerabilitymentioning

confidence: 99%

Temporal Analysis for Multi-hazard Risk Assessment of Rice Cultivation in Coastal Areas: A Case Study of Soc Trang, Vietnam

Vo¹,

Nguyen²,

Linh³

2021

Preprint

View full text Add to dashboard Cite

show abstract

Temporal analysis for multi-hazard risk assessment of rice cultivation in coastal areas: a case study of Soc Trang, Vietnam

2022

View full text Add to dashboard Cite

Rice is an important human crop and rice cultivation is threatened due to natural disasters, leading to negative effects on national and global food security. Natural disasters, such as tropical cyclones and saline intrusion, have dramatic influences in coastal regions. To investigate possible impacts of these disasters on rice cultivation, it needs an efficient tool to assess potential disaster impacts and a risk index is highly applicable. Therefore, this study aims at establishing a risk assessment of rice production in coastal areas under the effects of tropical cyclones and saline intrusion. We adopted the risk definition introduced by [1] in which risk is a function of hazard, exposure and, vulnerability. Multiple hazards of tropical cyclones and saline intrusion were indicated by their frequency and severity at some critical levels of 25%, 50% and, >50% rice yield reduction. Each hazard was weighted by its damage to rice yield. The exposure and vulnerability of rice crops are evaluated at different growing phases. The tropical cyclone hazard index was ranked high and very high in the wet season while the salinity hazard index was ranked very high in the dry season. Due to the combined effects of tropical cyclones and salinity, rice crop is highly susceptible during the reproduction phase and at the panicle initiation stage particularly. Based on the cropping calendar of My Xuyen, the period of October-November was the very high vulnerability period since it had the largest rice cultivable area and rice crops were at the reproduction phase. This result shows that rice crops are at high risk in October and November. Noticeably, saline intrusion reaches the highest level in April and May, but no risk is at this period because of no rice crop cultivated. This can reflect a measure to reduce risk by adjusting the cropping calendar.

show abstract

Establishing an integrated model for supporting agricultural land use planning: A case study in Tran De district, Soc Trang province

Thao¹,

Trung²

2018

CTU Journal

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Xây dựng mô hình hỗ trợ bố trí đất nông nghiệp - Trường hợp nghiên cứu ở huyện Mỹ Xuyên, tỉnh Sóc Trăng

Cited by 4 publications

References 9 publications

Temporal Analysis for Multi-hazard Risk Assessment of Rice Cultivation in Coastal Areas: A Case Study of Soc Trang, Vietnam

Temporal Analysis for Multi-hazard Risk Assessment of Rice Cultivation in Coastal Areas: A Case Study of Soc Trang, Vietnam

Temporal analysis for multi-hazard risk assessment of rice cultivation in coastal areas: a case study of Soc Trang, Vietnam

Establishing an integrated model for supporting agricultural land use planning: A case study in Tran De district, Soc Trang province

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