A viable drought vulnerability index for outermost small islands in Indonesia

2021 ◽  
pp. 100698
Author(s):  
Robby Yussac Tallar ◽  
Benedict Andrew Dhian
Keyword(s):  
Vulnerability Index ◽  
Small Islands ◽  
Drought Vulnerability

scholarly journals Drought Risk Assessment by Using Drought Hazard and Vulnerability Indexes

2018 ◽  
Author(s):  
Ismail Dabanli
Keyword(s):  
Risk Assessment ◽  
Risk Index ◽  
Standardized Precipitation Index ◽  
Hazard Index ◽  
Vulnerability Index ◽  
Drought Risk ◽  
Drought Vulnerability ◽  
Drought Hazard ◽  
Hazard Vulnerability ◽  
Composite Risk

Abstract. Drought has multiple impacts on socioeconomic sectors and it is expected to increase in the coming years due to non-stationary nature of climate variability and change. Here, we investigated drought hazard, vulnerability, and risk based on hydro-meteorological and actual socio-economic data for provinces of Turkey. Although, drought vulnerability and risk assessment are essential parts of drought phenomenon, so far, lack of proper integrated drought risk assessment in Turkey (and elsewhere) has led to higher socio-economic impacts. Firstly, the Drought Hazard Index (DHI) is derived based on the probability occurrences of drought using Standardized Precipitation Index (SPI) to facilitate the understanding of drought phenomenon. Secondly, the Drought Vulnerability Index (DVI) is calculated by utilizing four socio-economic indicators to quantify drought impact on society. Finally, the Drought Risk Index (DRI) is obtained by multiplying DHI and DVI for provinces of Turkey to highlight the relative importance of hazard and vulnerability assessment for drought risk management. A set of drought hazard, vulnerability, and composite risk maps were then developed. The outputs of analysis reveal that among 81 administrative provinces in Turkey, 73 provinces are exposed to the low drought risk (0 

scholarly journals Analysing agricultural drought vulnerability at sub-district level through exposure, sensitivity and adaptive capacity based composite index

2014 ◽  
Vol XL-8 ◽  
pp. 65-70 ◽  
Author(s):  
C. S. Murthy ◽  
B. Laxman ◽  
M. V. R. Sesha Sai ◽  
P. G. Diwakar
Keyword(s):  
Adaptive Capacity ◽  
Composite Index ◽  
Vulnerability Index ◽  
The State ◽  
District Level ◽  
Agricultural Drought ◽  
Current Status ◽  
Drought Vulnerability ◽  
Related Data ◽  
Land Holdings

Information on agricultural drought vulnerability status of different regions is extremely useful for implementation of long term drought management measures. A quantitative approach for measuring agricultural drought vulnerability at sub-district level was developed and implemented in the current study, which was carried-out in Andhra Pradesh state, India with the data of main cropping season i.e., kharif. The contributing indicators represent exposure, sensitivity and adaptive capacity components of vulnerability and were drawn from weather, soil, crop, irrigation and land holdings related data. After performing data normalisation and variance based weights generation, component wise composite indices were generated. Agricultural Drought Vulnerability Index (ADVI) was generated using the three component indices and beta distribution was fitted to it. Mandals (sub-district level administrative units) of the state were categorised into 5 classes – Less vulnerable, Moderately vulnerable, Vulnerable, Highly vulnerable and Very highly vulnerable. Districts dominant with vulnerable Mandals showed considerably larger variability of detrended yields of principal crops compared to the other districts, thus validating the index based vulnerability status. Current status of agricultural drought vulnerability in the state, based on ADVI, indicated that vulnerable to very highly vulnerable group of Mandals represent 54 % of total Mandals and about 55 % of the agricultural area and 65 % of the rainfed crop area. The variability in the agricultural drought vulnerability at disaggregated level was effectively captured by ADVI. The vulnerability status map is useful for diagnostic analysis and for formulating vulnerability reduction plans.

scholarly journals Drought vulnerability of Marathwada region, India: A spatial analysis

GeoScape ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 108-121
Author(s):  
Sagar Khetwani ◽  
Ram Babu Singh
Keyword(s):  
Spatial Analysis ◽  
Geographical Area ◽  
Vulnerability Index ◽  
District Level ◽  
Economic Resources ◽  
Extreme Drought ◽  
Economic Indicators ◽  
Drought Vulnerability ◽  
Human Wellbeing

AbstractThe magnitude and frequency of severe and extreme drought events continue to grow, instigating a grave risk to human wellbeing. Marathwada region of India is one of the most chronically drought affected region of India. The sequential drought events between the years 2012 to 2016 acutely impacted the natural as well as socio-economic resources of the region. This study attempts to assess the drought vulnerability of Marathwada region at sub-district level. An integrated drought vulnerability index has been developed by blending biophysical and socio-economic indicators of drought vulnerability. The analysis revealed that sub-districts like Shirur-Anantpal, Deoni, Shirur Kasar, Dharur, Biloli, Paranda, Mukhed, Khuldabad, Patoda, Hadgaon, Palam, Badnapur and Kaij, emerged as the very highly vulnerable to drought, representing 14.43% of geographical area and 10.96% of population of Marathwada while the sub-districts lying under the category of high drought vulnerability represented 39.15% of geographical area and 34.69% of population.

scholarly journals A Quantitative Analysis of Socio-Economic Determinants Influencing Crop Drought Vulnerability in Sub-Saharan Africa

2019 ◽  
Vol 11 (21) ◽  
pp. 6135 ◽  
Author(s):  
Bahareh Kamali ◽  
Karim C. Abbaspour ◽  
Bernhard Wehrli ◽  
Hong Yang
Keyword(s):  
Agricultural Production ◽  
Vulnerability Index ◽  
Influential Factor ◽  
Sub Saharan Africa ◽  
Drought Vulnerability ◽  
Economic Determinants ◽  
Sub Saharan ◽  
Socio Economic Variables ◽  
The Government ◽  
Role Of The Government

Drought events have significant impacts on agricultural production in Sub-Saharan Africa (SSA), as agricultural production in most of the countries relies on precipitation. Socio-economic factors have a tremendous influence on whether a farmer or a nation can adapt to these climate stressors. This study aims to examine the extent to which these factors affect maize vulnerability to drought in SSA. To differentiate sensitive regions from resilient ones, we defined a crop drought vulnerability index (CDVI) calculated by comparing recorded yield with expected yield simulated by the Environmental Policy Integrated Climate (EPIC) model during 1990–2012. We then assessed the relationship between CDVI and potential socio-economic variables using regression techniques and identified the influencing variables. The results show that the level of fertilizer use is a highly influential factor on vulnerability. Additionally, countries with higher food production index and better infrastructure are more resilient to drought. The role of the government effectiveness variable was less apparent across the SSA countries due to being generally stationary. Improving adaptations to drought through investing in infrastructure, improving fertilizer distribution, and fostering economic development would contribute to drought resilience.

scholarly journals Vulnerability Analysis of Sea Level Rise In The Southern Coast of Bawean Island

2019 ◽  
Vol 20 (2) ◽  
pp. 87
Author(s):  
Zainul Hidayah ◽  
Agus Romadhon ◽  
Yudha Witjarnoko
Keyword(s):  
Remote Sensing ◽  
Sea Level Rise ◽  
Sea Level ◽  
Field Survey ◽  
Vulnerability Index ◽  
Geographical Information ◽  
Environmental Services ◽  
Small Islands ◽  
Southern Coast ◽  
High Level

Bawean island is one of numerous small islands in East Java. This island is famous for its natural resources and high level of environmental services. However in the last few years, effects of sea level rises on the island have been reported. Objective of this research was to identify and determine parameters that have significant impact on the vulnerability of the island due to sea level rise events. This research was conducted from July untill September 2017. The method used for this study was a combination of spatial analysis using remote sensing and  Geographical Information System (GIS), field survey and interviews with local people. Vulnerability assesment was conducted for three parameters, namely Exposure, Sensitivity and Adaptive Capacity. The results showed that the vulnerability index in the southern part of the island is 3.381. It can be classified as low vulnerability.

scholarly journals Ανάπτυξη, εφαρμογή και αξιολόγηση δεικτών επικινδυνότητας ξηρασίας και ερημοποίησης για την ολοκληρωμένη διαχείριση των υδατικών πόρων

2017 ◽  
Author(s):  
Δημήτριος Τσεσμελής
Keyword(s):  
Land Use ◽  
Drought Resistance ◽  
Soil Texture ◽  
Plant Cover ◽  
Vulnerability Index ◽  
Parent Material ◽  
Land Use Intensity ◽  
Drought Vulnerability ◽  
Drought Impacts

Η παρούσα διδακτορική εργασία έχει ως τομέα μελέτης την Ολοκληρωμένη Διαχείριση των Υδατικών Πόρων (ΟΔΥΠ), βάσει των αρχών της οποίας δημιουργήθηκε ένα εργαλείο (δείκτης) για την αναγνώριση των ξηρασιών και των τρωτών περιοχών, καθώς και τη σύνδεση της τρωτότητας στηv ξηρασία και την ερημοποίηση. Η Ελλάδα παρουσιάζει συχνά φαινόμενα ξηρασίας,τυχαία και περιοδικά. Αυτό οφείλεται στη χωροχρονική κατανομή των κατακρημνισμάτων, δηλαδή στη διαδοχή των υγρών (Οκτώβριος-Μάρτιος) και των ξηρών περιόδων (Απρίλιος-Σεπτέμβριος). Αν δεν σημειωθούν βροχοπτώσεις κατά τη διάρκεια των υγρών περιόδων τότε ενδέχεται να δημιουργηθούν προβλήματα στη διαθεσιμότητα των υδατικών πόρων κατά τη διάρκεια των ξηρών περιόδων. Για την αντιμετώπιση αυτού του προβλήματος απαιτείται τακτική παρατήρηση και επεξεργασία των μετεωρολογικών δεδομένων, αλλά και ταυτόχρονη εφαρμογή του προληπτικού σχεδιασμού. Ένας τρόπος πρόληψης είναι ο υπολογισμός απλών και σύνθετων δεικτών ξηρασίας μιας περιοχής ή μιας χώρας για την έγκαιρη αναγνώριση του σχετικού προβλήματος. Σε αυτό το πλαίσιο, παρουσιάζεται η ανάπτυξη και η δημιουργία ενός σύνθετου δείκτη που αποτελείται από έξι υπο-δείκτες και συγκεκριμένα από τους υπο-δείκτες κατηγοριοποιημένα SPI6 (cSPI6 και cSPI12), Ζήτηση (Demand), Εφοδιασμός (Supply), Επιπτώσεις (Impacts) και Υποδομές στους Υδατικούς πόρους (Infrastructure), έτσι οι υπο-δείκτες του Standardized Drought Vulnerability Index (SDVI) σχετίζονται με όλες τις πτυχές μιας ξηρασίας (μετεωρολογική, αγροτική, υδρολογική και κοινωνικοοικονομική). Συνυπολογίζοντας όλα τα παραπάνω, εκτιμάται η τρωτότητα σε ένα σημείο ή μια περιοχή. Έπειτα, εξετάστηκε η σχέση των υπο-δεικτών και αναπτύχθηκαν συντελεστές βαρύτητας με στατιστικές και εμπειρικές μεθόδους. Ο σύνθετος δείκτης εφαρμόστηκες σε διάφορες συνθήκες (σενάρια, πραγματικές και υποθετικές τιμές) και διαφορετικές περιοχές (Ελλάδα και Νοτιοανατολική Ευρώπη με τη χρήση δεδομένων από 324 μετεωρολογικούς σταθμούς και περίοδο τουλάχιστον 30 ετών). Η αρχική υπόθεση του SDVI με ίδια βάρη και η μέθοδος των κύριων συνιστωσών δείχνουν ότι προσεγγίζουν καλύτερα την τρωτότητα. Στην συνέχεια, εξετάζεται εάν υπάρχει σύνδεση των δύο διαδικασιών τρωτότητας στην ξηρασία και τρωτότητας στην ερημοποίηση. Για τη συσχέτιση αυτή χρειάστηκε να γίνει όμοια κατηγοριοποίηση και των σύνθετων δεικτών σε 3 κλάσεις (χαμηλή, μέτρια και υψηλή). Με βάση αυτή την παραδοχή, εμφανίστηκε μία σχέση μεταξύ τους, της οποίας η εφαρμογή θα ήταν δόκιμο να εξεταστεί και σε άλλες περιοχές. Τέλος, αναλύθηκαν οι δείκτες και των δύο διαδικασιών και δημιουργήθηκε ένας σύνθετος δείκτης που εμφανίζει συνδυαστικά την υδατική και εδαφική υποβάθμιση μιας περιοχής έχοντας, επίσης, τη δυνατότητα να τις εμφανίσει και ξεχωριστά. Οι δείκτες που περιλαμβάνονται στην τελική εξίσωση είναι αυτοί της Ξηρότητας (Aridity), της Ζήτησης (Drought Demand), των Επιπτώσεων από την ξηρασία (Drought Impacts), της Αντοχής στην ξηρασία (Drought Resistance), των Υποδομών στους υδατικούς πόρους (Infrastructure), της Έντασης Χρήσης Γης (Land use intensity), του Μητρικού Υλικού (Parent Material), της Φυτοκάλυψης (Plant Cover), των Βροχοπτώσεων (Rainfall), της Κλίσης (Slope) και της Σύστασης του Εδάφους (Soil Texture).

scholarly journals Assessment of the Vulnerability to Drought and Desertification Characteristics Using the Standardized Drought Vulnerability Index (SDVI) and the Environmentally Sensitive Areas Index (ESAI)

Resources ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 6 ◽  
Author(s):  
Demetrios Tsesmelis ◽  
Christos Karavitis ◽  
Panagiotis Oikonomou ◽  
Stavros Alexandris ◽  
Constantinos Kosmas
Keyword(s):  
Natural Resources ◽  
Vulnerability Index ◽  
Natural Phenomenon ◽  
Anthropogenic Factors ◽  
Drought Vulnerability ◽  
Current Effort ◽  
Sensitive Areas ◽  
Environmentally Sensitive Areas ◽  
Environmentally Sensitive ◽  
The One

The degradation of natural resources at an intense rate creates serious problems in the environmental systems particularly with the compounding effects of climatic vagaries and changes. On the one hand, desertification is a crucial universal, mostly an anthropogenic environmental issue affecting soils all over the world. On the other hand, drought is a natural phenomenon in direct association with reduced rainfall in various spatial and temporal frames. Vulnerabilities to drought and desertification are complex processes caused by environmental, ecological, social, economic and anthropogenic factors. Particularly for the Mediterranean semi-arid conditions, where the physical and structural systems are more vulnerable, the abuse and overuse of the natural resources lead to their degradation and ultimately, if the current trends continue, to their marginalization. The scope of the current effort is trying to find any common drivers for the pressures of both processes. Thus, the vulnerabilities to drought and desertification are comparing by using the Standardized Drought Vulnerability Index (SDVI) and the Environmentally Sensitive Areas Index (ESAI). The indices are calculated from October 1983 to September 1996 in Greece. Greece is prone to desertification and it is often experiencing intense droughts, thus it presents an almost ideal case study area. The results may indicate that the most important factor for such procedures is the deficits in water resources, either due to lower than usually expected rainfall or to higher societal water demand.

scholarly journals Assessment the socio-economic drought vulnerability index in the Red River delta

2015 ◽  
Vol 37 (2) ◽  
Author(s):  
Vu Thi Thu Lan ◽  
Lai Tien Vinh ◽  
Hoang Thanh Son
Keyword(s):  
Vulnerability Index ◽  
River Delta ◽  
Red River ◽  
Drought Vulnerability ◽  
Red River Delta
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