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Livelihood vulnerability of smallholder farmers to climate change: A comparative analysis based on irrigation access in South Sulawesi, Indonesia

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Regional Sustainability 2022年第3期3卷 244-253页

作者： arifah Darmawan SALMAN Amir YASSI Eymal Bahsar DEMMALLINO Doctoral Candidate of Agriculture Science Hasanuddin UniversityMakassar90245Indonesia Pangkep State Polytechnic of Agriculture Pangkep90652Indonesia Faculty of Agriculture Hasanuddin UniversityMakassar90245Indonesia

Bulukumba Regency is one of the major rice-producing areas in South Sulawesi,Indonesia and has experienced frequent climate disasters over the past *** downstream villages within the Bettu River irrigation area have been affected by the drought,culminating in reduced lowland rice production and increasing the vulnerability of farmers’*** study aims to evaluate the vulnerability of the livelihood system among rice farmers in the Bettu River irrigation area by classifying the area into two zones based on the distance from the main irrigation canal,namely the upstream area and downstream *** livelihood vulnerability index(LVI)framework and livelihood vulnerability index-Intergovernmental Panel on Climate Change(LVI-IPCC)approach were applied by selecting geographic and socio-demographic indicators that affected the farmer households,including 8 major components and 26 *** data for LVI-IPCC estimation were collected by randomly selecting 132 households from villages in the two *** empirical results showed that farmers in the downstream area were more vulnerable to climate change than farmers in the upstream *** major components causing the livelihood vulnerability of the downstream farmers were livelihood strategy,food,water,land,and health,as well as natural disasters and climate *** particular,the sub-components of agricultural livelihood diversification,consistent water supply for farming,and drought events were important in the downstream *** in the upstream area were vulnerable to socio-demographic profile and social network *** LVI-IPCC findings suggested that the government should prioritize farmers in the downstream area to develop resilience strategies,particularly by increasing irrigation infrastructure and the number of reservoirs and drilling ***,to increase their adaptive capacity in terms of diversification of agricultural livelihood systems,the government a

关键词： Livelihood vulnerability index(LVI) Livelihood vulnerability index-Intergovernmental Panel on Climate Change(LVI-IPCC) Climate change Irrigation area Lowland rice Farmer Indonesia

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Knowledge flow analysis of knowledge co-production-based climate change adaptation for lowland rice farmers in Bulukumba Regency,Indonesia

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Regional Sustainability 2023年第2期4卷 194-202页

作者： arifah Darmawan SALMAN Amir YASSI Eymal Bahsar DEMMALLINO Pangkep State Polytechnic of Agriculture Pangkep90652Indonesia Faculty of Agriculture Hasanuddin UniversityMakassar90245Indonesia

To increase the resilience of farmers’livelihood systems,detailed knowledge of adaptation strategies for dealing with the impacts of climate change is *** co-production approach is an adaptation strategy that is considered appropriate in the context of the increasing frequency of disasters caused by climate *** research of knowledge co-production on climate change adaptation in Indonesia is insufficient,particularly at local level,so we examined the flow of climate change adaptation knowledge in the knowledge co-production process through climate field school(CFS)activities in this *** interviewed 120 people living in Bulukumba Regency,South Sulawesi Province,Indonesia,involving 12 crowds including male and female farmers participated in CFS and not participated in CFS,local government officials,agriculture extension workers,agricultural traders,farmers’family members and neighbors,*** brief,the 12 groups of people mainly include two categories of people,i.e.,people involved in CFS activities and outside *** applied descriptive method and Social network analysis(SNA)to determine how knowledge flow in the community network and which groups of actors are important for knowledge *** findings of this study reveal that participants in CFS activities convey the knowledge they acquired formally(i.e.,from TV,radio,government,etc.)and informally(i.e.,from market,friends,relatives,etc.)to other actors,especially to their families and *** results also show that the acquisition and sharing of knowledge facilitate the flow of climate change adaptation knowledge based on knowledge *** addition,the findings highlight the key role of actors in the knowledge transfer process,and key actors involved in disseminating information about climate change *** be specific,among all the actors,family member and neighbor of CFS actor are the most common actors in disseminating climate knowledge information and closest t

关键词： Climate change adaptation Knowledge flow Knowledge co-production Climate field school(CFS) Social network analysis(SNA) Indonesia

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Resistance Analysis of a Semi-SWATH Design Concept in Shallow Water

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Journal of Marine Science and Application 2017年第2期16卷 182-189页

作者： arifah Ali Adi Maimun Yasser M. Ahmed Rahimuddin Marine Technology Center Department of Aeronautics Automotive & Ocean Engineering Universiti Teknologi MalaysiaSkudai 81310 UTM Malaysia Department of Naval Architecture and Marine Engineering Faculty of Engineering Alexandria University Alexandria 21526 Egypt Program Studi Teknik Sistem Perkapalan Universitas Hasanuddin Makassar 90245 Indonesia

Resistance analysis is an important analytical method used to evaluate the hydrodynamic performance of High Speed Craft (HSC). Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in resistance because of changes in pressure distribution and wave pattern. In this paper, the shallow water performance of an HSC design concept, the semi-Small Waterplane Area Twin Hull (semi-SWATH) form, is studied. The hull is installed with fin stabilizers to reduce dynamic motion effects, and the resistance components of the hull, hull trim condition, and maximum wave amplitude around the hull are determined via calm water resistance tests in shallow water. These criteria are important in analyzing semi-SWATH resistance in shallow water and its relation to flow around hull. The fore fin angle is fixed to zero degrees, while the aft fin angle is varied to 0o, 5o, 10o, and 15o. For each configuration, investigations are conducted with depth Froude numbers (FrH) ranging from 0.65 to 1.2, and the resistance tests are performed in shallow water at the towing tank of UTM. Analysis results indicate that the resistance, wave pattern, and trim of the semi-SWATH hull form are affected by the fin angle. The resistance is amplified whereas the trim and sinkage are reduced as the fin angle increases. Increases in fin angle contribute to seakeeping and stability but affect the hull resistance of HSCs.

关键词： resistance wave height semi-SWATH shallow water fin stabilizers

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Callus Induction of Young Leaf Coconut cv. MATAG with Combination of 2,4-Dichlorophenoxyacetic Acid (2,4-D), α-Naphthalene Acetic Acid (NAA) and Benzyl Amino Purin (BAP)

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Advances in Bioscience and Biotechnology 2022年第5期13卷 254-263页

作者： Zuraida Ab Rahman Sentoor Kumaran Govindasamy Ahmad Ngalim Nur Auni Syazalien Adlan Nur Najwa arifah Basiron Ayu Nazreena Othman Biotechnology & Nanotechnology Research Centre Headquarters of Malaysian Agricultural Research and Development Institute Serdang Malaysia Crop Science and Soil Science Research Centre Headquarters of Malaysian Agricultural Research and Development Institute Serdang Malaysia Universiti Malaysia Pahang Gambang Campus Gambang Malaysia

This research was to study in vitro callus induction in Coconut cv MATAG from young leaf explants. Young leaf segments from mature coconut were cultured on Y3 medium supplemented with different concentrations of 2,4-D and a combination of NAA and BAP. Each of these plant growth regulators (PGR) gives different responses toward callus formation, the percentage of explants producing callus, the percentage of callus proliferation, and the morphology of callus. A series of different concentrations were used for 2,4-D (1, 5, 10, 20, 40, 60, 100 mg/L), NAA (1, 3, 5 mg/L) and BAP (1, 3, 5 mg/L) respectively. The range of days of callus formation using 2,4-D treatments is 7 - 12 months, while the 2,4-D combined with NAA is recorded at 2 - 5 months. Despite the variety of different months between these plant growth regulators for callus formation, the percentages of explants producing callus and callus proliferation are different. The highest percentage of explants producing callus (2.9%) was observed at 2,4-D (40 mg/mL), followed by 2.7% at 2,4-D (10.0 mg/mL) with NAA (1 mg/mL). At a concentration of 100 mg/mL of 2,4-D, the highest percentage of callus proliferation was found, as well.

关键词： Callus Induction Coconut NAA 2 4-D

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