scholarly journals The Comparative Study of Adaptation Measure to Sea Level Rise in Thailand

2021 ◽  
Vol 9 (6) ◽  
pp. 588
Author(s):  
Sompratana Ritphring ◽  
Pattrakorn Nidhinarangkoon ◽  
Keiko Udo ◽  
Hiroaki Shirakawa
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Cost Ratio ◽  
Climate Change Scenarios ◽  
Ratio Analysis ◽  
Adaptation Measure ◽  
Benefit Cost Ratio ◽  
Structural Measures ◽  
Benefit Cost

In the 21st century, global sea level rise associated with climate change will affect beach areas, which provide a number of benefits that include benefits to the recreational sector of the economy. In Thailand, the adoption of structural measures in order to slow down beach erosion and handle the impact of sea level rise is commonly implemented. However, structural measures often bring about negative effects on nearby coastal areas. For this reason, suitable adaptation measures should be determined, in order to protect beach areas and to sustain the tourism carrying capacity of the beach. This study analyzed historical shoreline changes using satellite images, and assessed beach value with the hedonic pricing method. We used a benefit–cost ratio analysis to evaluate the economic valuation assessment of Pattaya beach and Chalatat beach. The results showed that the beach values of Pattaya beach and Chalatat beach were 1,072,250 and 92,092 USD, respectively. The benefit–cost ratio analysis proposed that it is worth implementing beach nourishment for the adaptation measure to address all climate change scenarios. In response to climate change, recommendations could be applied to support beach tourism.

scholarly journals Tidal wetland resilience to sea level rise increases their carbon sequestration capacity in United States

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Faming Wang ◽  
Xiaoliang Lu ◽  
Christian J. Sanders ◽  
Jianwu Tang
Keyword(s):  
Climate Change ◽  
United States ◽  
Sea Level Rise ◽  
Sea Level ◽  
Large Scale ◽  
Accumulation Rate ◽  
C Sequestration ◽  
Tidal Wetlands ◽  
Tidal Wetland ◽  
Climate Change Scenarios

AbstractCoastal wetlands are large reservoirs of soil carbon (C). However, the annual C accumulation rates contributing to the C storage in these systems have yet to be spatially estimated on a large scale. We synthesized C accumulation rate (CAR) in tidal wetlands of the conterminous United States (US), upscaled the CAR to national scale, and predicted trends based on climate change scenarios. Here, we show that the mean CAR is 161.8 ± 6 g Cm−2 yr−1, and the conterminous US tidal wetlands sequestrate 4.2–5.0 Tg C yr−1. Relative sea level rise (RSLR) largely regulates the CAR. The tidal wetland CAR is projected to increase in this century and continue their C sequestration capacity in all climate change scenarios, suggesting a strong resilience to sea level rise. These results serve as a baseline assessment of C accumulation in tidal wetlands of US, and indicate a significant C sink throughout this century.

scholarly journals Assessment of the effectiveness of flood adaptation strategies for HCMC

2014 ◽  
Vol 14 (6) ◽  
pp. 1441-1457 ◽  
Author(s):  
R. Lasage ◽  
T. I. E. Veldkamp ◽  
H. de Moel ◽  
T. C. Van ◽  
H. L. Phi ◽  
...  
Keyword(s):  
Sea Level ◽  
Flood Risk ◽  
Net Present Value ◽  
Adaptation Strategies ◽  
Ho Chi Minh City ◽  
Cost Ratio ◽  
Present Value ◽  
Benefit Cost Ratio ◽  
Coastal Cities ◽  
Benefit Cost

Abstract. Coastal cities are vulnerable to flooding, and flood risk to coastal cities will increase due to sea-level rise. Moreover, Asian cities in particular are subject to considerable population growth and associated urban developments, increasing this risk even more. Empirical data on vulnerability and the cost and benefits of flood risk reduction measures are therefore paramount for sustainable development of these cities. This paper presents an approach to explore the impacts of sea-level rise and socio-economic developments on flood risk for the flood-prone District 4 in Ho Chi Minh City, Vietnam, and to develop and evaluate the effects of different adaptation strategies (new levees, dry- and wet proofing of buildings and elevating roads and buildings). A flood damage model was developed to simulate current and future flood risk using the results from a household survey to establish stage–damage curves for residential buildings. The model has been used to assess the effects of several participatory developed adaptation strategies to reduce flood risk, expressed in expected annual damage (EAD). Adaptation strategies were evaluated assuming combinations of both sea-level scenarios and land-use scenarios. Together with information on costs of these strategies, we calculated the benefit–cost ratio and net present value for the adaptation strategies until 2100, taking into account depreciation rates of 2.5% and 5%. The results of this modelling study indicate that the current flood risk in District 4 is USD 0.31 million per year, increasing up to USD 0.78 million per year in 2100. The net present value and benefit–cost ratios using a discount rate of 5 % range from USD −107 to −1.5 million, and from 0.086 to 0.796 for the different strategies. Using a discount rate of 2.5% leads to an increase in both net present value and benefit–cost ratio. The adaptation strategies wet-proofing and dry-proofing generate the best results using these economic indicators. The information on different strategies will be used by the government of Ho Chi Minh City to determine a new flood protection strategy. Future research should focus on gathering empirical data right after a flood on the occurring damage, as this appears to be the most uncertain factor in the risk assessment.

scholarly journals Karakteristik Petani dan Kelayakan Usahatani Cabai Besar (Capsiccum Annum L) dan Cabai Rawit (Capsiccum Frutescens L) di Sumatera Utara

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Arifah Astining Cahya ◽  
Rita Herawaty Br Bangun
Keyword(s):  
Data Analysis ◽  
Descriptive Analysis ◽  
Secondary Data ◽  
Chili Pepper ◽  
Cost Ratio ◽  
Ratio Analysis ◽  
Benefit Cost Ratio ◽  
Capital Financing ◽  
C Value ◽  
Benefit Cost

Penelitian ini bertujuan untuk mengetahui karakteristik dan menganalisis kelayakan usahatani cabai besar dan cabai rawit di Sumatera Utara. Penelitian ini menggunakan analisis deskriptif. Data yang digunakan dalam penelitian ini adalah data sekunder. Karakteristik rumah tangga usaha tani cabai besar dan cabai rawit menunjukkan bahwa umur petani cabai besar dan cabai rawit sebagian besar berada di usia yang produktif, sebagian besar pendidikan petani masih rendah, pembiayaan modal berasal dari modal sendiri dan sebagian besar usahatani cabai besar dan cabai rawit tidak mendapatkan bimbingan atau penyuluhan. Analisis data dilakukan untuk melihat kelayakan usahatani cabai besar dan cabai rawit menggunakan analisis R/C (Return Cost Ratio) dan B/C (Benefit Cost Ratio). Berdasar hasil penghitungan pada usahatani cabai besar diperoleh nilai R/C>1 sebesar 1,56 dan B/C>0 sebesar 0,56. Penghitungan pada usahatani cabai rawit diperoleh nilai R/C>1 sebesar 1,93 dan B/C>0 sebesar 0,93. Dari hasil analisis usahatani cabai besar dan cabai rawit dapat disimpulkan bahwa usahatani ini layak dan menguntungkan secara ekonomi untuk diusahakan.Kata kunci: cabai, karakteristik, kelayakan usahataniAbstract This study aims to determine characteristics  and analyze the feasibility of chili pepper (Capsicum annuum L) and cayenne pepper (Capsicum frutescent L) farming in Sumatera Utara . This research uses descriptive analysis. The data used in this study is secondary data. Household characteristics of chili pepper and cayenne pepper farming show that the age of farmers of chili pepper and cayenne pepper are mostly in productive age; most of the farmers' education is still low; capital financing comes from their capital and most of the chili pepper and cayenne pepper farming is not get guidance or counseling. Data analysis was carried out to see the feasibility of chili pepper and cayenne pepper farming using R / C (Revenue Cost Ratio) and B / C (Benefit Cost Ratio) analysis. Based on the results of calculations on chili pepper farming obtained R/C value 1,56 and B/C value 0,56. Calculation of the cayenne farming obtained R/C value 1,93 and B/C value 0,93. From the results of the analysis of chili pepper and cayenne pepper farming, it can be concluded that this farming is feasible and economically profitable to be cultivated..Keywords: business feasibility, characteristics, chili  

scholarly journals Evaluating on flooding area and tidal beach change in Quang Ninh coastal zone due to sea level rise

2020 ◽  
Vol 3 (SI3) ◽  
pp. First
Author(s):  
Van Manh Dinh ◽  
Thu Ha Tran ◽  
Manh Chien Truong
Keyword(s):  
Climate Change ◽  
Numerical Model ◽  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Zone ◽  
Beach Erosion ◽  
Tidal Range ◽  
Climate Change Scenarios ◽  
Quang Ninh ◽  
Flooded Areas

Viet Nam is considered one of countries most affected by climate change and sea-level rise. It results in many negative effects, such as flooding, saline intrusion and beach erosion occurred in the coastal zones. Quang Ninh with more than 250 km coastline, located in the northeastern part of Vietnam, is one of the vulnerable coastal provinces under the heavily affected due to the sea level rise. In order to evaluate the changes of flooded areas and tidal beaches due to the sea level rise in Quang Ninh coastal zone a 2D numerical model is set up, using the 3-grids nesting technique. The numerical model is calibrated by using the harmonic constants of 8 tidal constituents at Hon Dau tide station and validated with the observed data. On the basis of the climate change scenarios (RCP4.5, RCP8.5) in the period from 2020 to 2100, the corresponding sea level values are used in the numerical modeling to calculate the changes of flooded areas and tidal beaches due to the sea level rise. The obtained results on changing of the flooded area and tidal beach in Quang Ninh coastal zone are not only statically by changing water sea levels but also due to changing of the tidal range in this area. The calculated results point out that districts under the most affected of the sea level rise are Quang Yen, Tien Yen, Hai Ha, Mong Cai.

scholarly journals Analysis Of Efficiency Of Windu Shrimp Cultivation Business Policulture System In Tugurejo Sub-District Tugu Districts Semarang City

AQUASAINS ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 861
Author(s):  
Sulistyowati Sulistyowati
Keyword(s):  
Descriptive Analysis ◽  
Primary Data ◽  
Cost Ratio ◽  
Ratio Analysis ◽  
Field Observations ◽  
Financial Efficiency ◽  
Benefit Cost Ratio ◽  
Tiger Prawn ◽  
Benefit Cost ◽  
Shrimp Cultivation

This study aims to calculate technical efficiency and determine the financial efficiency of the cultivation of windu shrimp with the Polyculture system by farmers in Tugurejo  village,  Tugu  district,  Semarang  City  based  on  simple  investment  criteria, namely BC ratio (Benefit Cost Ratio), BEP (Break Event Point), ROI (Revenue On Invensment) to measure how much efficiency the use of capital is against revenue. The method used is descriptive analysis with a questionnaire and field observations. The data used are primary data collected through interviews with respondents and key persons. The sample was 25 people so that all (census) were taken in October 2019-March 2020. The results showed that the BC ratio analysis was 1.64, BEP (Q) tiger prawns were 160.49 kg / Ha per year and for BEP prices IDR 35,680 / kg, BEP (Q) of milkfish as much as 755.25 kg / Ha per year and for BEP prices of IDR 12,175 /kg, ROI is 137.97%> 100%, the tiger prawn cultivation business with an efficient polyculture system in the use of capital to revenue and worthy of cultivation.

scholarly journals Assessment of the effectiveness of participatory developed adaptation strategies for HCMC

2014 ◽  
Vol 2 (1) ◽  
pp. 385-425 ◽  
Author(s):  
R. Lasage ◽  
T. I. E. Veldkamp ◽  
H. de Moel ◽  
T. C. Van ◽  
H. L. Phi ◽  
...  
Keyword(s):  
Sea Level ◽  
Flood Risk ◽  
Net Present Value ◽  
Adaptation Strategies ◽  
Ho Chi Minh City ◽  
Cost Ratio ◽  
Present Value ◽  
Benefit Cost Ratio ◽  
Coastal Cities ◽  
Benefit Cost

Abstract. Coastal cities are vulnerable to flooding, and flood risk to coastal cities will increase due to sea-level rise. Moreover, especially Asian cities are subject to considerable population growth and associated urban developments, increasing this risk even more. Empirical data on vulnerability and the cost and benefits of flood risk reducing measures are therefore paramount for sustainable development of these cities. This paper presents an approach to explore the impacts of sea level rise and socio-economic developments on flood risk for the flood prone District 4 in Ho Chi Minh City, Vietnam, and to develop and evaluate the effects of different adaptation strategies (new levees, dry- and wet flood proofing of buildings). A flood damage model was developed to simulate current and future flood risk using the results from a household survey to establish stage-damage curves for residential buildings. the model has been used to assess the effects of several participatory developed adaptation strategies to reduce flood risk, expressed in Expected Annual Damage (EAD). Adaptation strategies were evaluated assuming combinations of both sea level scenarios and land use scenarios. Together with information on costs of these strategies, we calculated the benefit-cost ratio and net present value for the adaptation strategies until 2100, taking into account depreciation rates of 2.5% and 5%. The results of this modeling study indicate that the current flood risk in District 4 is 0.31 million USD yr–1, increasing up to 0.78 million USD yr–1 in 2100. The net present value and benefit-cost ratios using a discount rate of 5% range from USD −107 to −1.5 million, and from 0.086 to 0.796 for the different strategies. Using a discount rate of 2.5% leads to an increase in both net present value and benefit cost ratio. The adaptation strategies wet proofing and dry proofing generate the best results using these economic indicators. The information on different strategies will be used by the government of Ho Chi Minh City for selecting a new flood protection strategy. Future research should focus on gathering empirical data right after a flood on the occurring damage, as this appears to be the most uncertain factor in the risk assessment.

scholarly journals Analisis Kelayakan Usaha Ternak Ayam Broiler yang diberi Pakan Komersil yang Substitusi dengan Amtabis

2016 ◽  
Vol 1 (1) ◽  
pp. 790-796
Author(s):  
Elvira Rosa ◽  
Sitti Wajizah ◽  
Mira Delima
Keyword(s):  
Commercial Production ◽  
Cost Ratio ◽  
Ratio Analysis ◽  
Animal Science ◽  
Science Field ◽  
Benefit Cost Ratio ◽  
Commercial Feed ◽  
Benefit Cost ◽  
Level 2 ◽  
Banda Aceh

Abstrak- Penelitian tentang Analisis Kelayakan Usaha Ternak Ayam Broiler yang diberi Pakan Komersial di substitusidengan amtabisyang difermentasi dengan Aspergillus niger  telah dilakukan di Laboratorium Lapangan Peternakan Fakultas Pertanian Universitas Syiah Kuala yang berlokasi di Desa Kopelma Darussalam Banda Aceh. Penelitian berlangsung selama 35 hari sejak  tanggal 4 Desember 2015 sampai dengan tanggal 9 Januari 2016. Tujuan penelitian adalah untuk  mengetahui tingkat kelayakan produksi dan biaya produksi usaha ternak ayam broiler dengan pemberian amtabis sebagai substitusi sebagian pakan. Parameter yang diamati adalah : biaya produksi, nilai  pendapatan, keuntungan, dan kelayakan usaha. Hasil penelitian menunjukkan, peningkatan persentase substitusi amtabis mengakibatkan turunnya rata-rata biaya produksi yang berimplikasi pada meningkatnya nilai rata-rata penjualan, meskipun tidak melebihi nilai penjualan pada kontrol. Substitusi amtabis pada level 2% dan 4% diperoleh nilai B/C ratio lebih kecil dari satu, sehingga ransum tersebut tidak layak digunakan dalam usaha ayam broiler. Sedangkan substitusi amtabis pada level 6% kembali meningkatkan nilai B/C ratio sama dengan satu, sehingga ransum tersebut masih layak digunakan dalam usaha ayam broiler. Finances Feasibility Analysis On Broiler Commercial Production Which Using Fermented Amtabis  To Substitute Partly Amount Of Standard Commercial Feed Abstrack - A research of finances feasibilityanalysison broiler commercial production which using fermented amtabis  to substitutepartly amount of standard commercial feed was done on Animal Science Field Laboratory of Agriculture Department of Syiah Kuala University located at Kopelma County Darussalam Banda Aceh. The research was conducted from December 4th  2015 to January 9th 2016. The research purpose was to find finances feasibilityand production cost of broiler commercial production which using fermented amtabis  to substitute partly amount of standard commercial feed. Parameters observed were productioncost, income value, profits and benefit cost ratio (B/C ratio) analysis. The research concluded that partly substituting broiler standard commercial feed with fermented amtabis nor 2% and 4% was finnancially feasible (B/C ratio 1).However, partly substituting broiler standard commercial feed with 6% fermented amtabis was finnancially feasible (B/C ratio 1)

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