The Socioeconomic Vulnerability of Coastal Communities to Abrasion In Samas, Bantul Regency, Indonesia

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Number of respondents in Srigading and Gadingsari based on capacity level and distance between houses and shoreline_

Capacity levels	Distance between Houses and Shoreline
	Srigading					Gadingsari
	Near	Moderate	Far	Total	%	Near	Moderate	Far	Total	%
Low	0	1	3	4	11.11	0	0	0	0	0
Medium	4	10	9	23	63.89	0	0	13	13	65
High	6	3	0	9	25.00	0	0	7	7	35

The classification of capacity levels_

Classes	Total scores	Descriptions
Low	6–13	Lack of capacity to implement disaster risk reduction
Medium	14–22	Adequate capacity to implement disaster risk reduction
High	23–30	High capacity to implement disaster risk reduction

The extent of susceptible area to coastal erosion based on land use_

Land use	Vulnerability classes	Area (ha)
Beach sands	Medium	12.08
Beach sands	Medium	13.39
Beach sands	Medium	16.40
Beach sands	High	23.07
Beach sands	High	6.07
Beach sands	High	43.14
Settlement	High	6.09
Grass	High	2.14
Irrigated rice field	Medium	4.46
Irrigated rice field	High	27.06
Irrigated rice field	High	6.43
Dry land	Medium	2.25
Dry land	Medium	1.91
Dry land	High	0.30
Dry land	High	3.64
Water body	High	22.71
Water body	High	9.51

Research variables_

Objectives	Factors	Variables	Descriptions
Vulnerability	Physical	Number of houses	The higher, the more vulnerable
		Distance to shoreline	The closer to shoreline, the more vulnerable
		House types	Non-permanent house is more vulnerable than the permanent one
	Social	Population size	The higher, the more vulnerable
		Sex	Women are more vulnerable than men
		Age	Elderly and children cause more vulnerability
		Education	The higher, the less vulnerable
		Number of disabled people	The higher, the more vulnerable
	Economic	Job	People with professional jobs are less vulnerable
		Unemployment	The higher, the more vulnerable
		Number of poor household	The higher, the more vulnerable
		Economic facilities	The higher, the more vulnerable
Community capacity	Knowledge of abrasion	Abrasion	The more the knowledge, the less vulnerable
		The cause of abrasion	The more the knowledge, the less vulnerable
		The impact of abrasion	The more the knowledge, the less vulnerable
		The countermeasures of abrasion	The more the knowledge, the less vulnerable
		Abrasion risk reduction measures	The more the knowledge, the less vulnerable

Contingency coefficients_

Symmetric Measuresc		Value	Approx. Sig.
Nominal by Nominal	Phi	0.335	0.180
	Cramer’s V	0.237	0.180
	Contingency coefficient	0.317	0.180
N of valid cases		56

j_quageo-2018-0029_tab_006_w2aab3b7b8b1b6b1ab1b1b4b3Aa

Gadingsari Village:

395 / 1,108 × 56 = 20 households,

Srigading Village:

713 / 1,108 × 56 = 36 households,

Total = 56 households.