Table 2 Coastline classification system used in this study.

From: GCL_FCS30: a global coastline dataset with 30-m resolution and a fine classification system from 2010 to 2020

 

Categories

Abbreviation

Description

Natural

Sandy

SD

Coastlines which are mainly constructed by sand, chalk and silt and are located in open bays before the bedrock headlands.

Biogenic

BG

Coastlines which are developed by reef-building coral and mangroves.

Rocky

BD

Coastlines which are constructed by hard, bare rocks with steep terrain which are formed by geological activities and wave action.

Muddy

ST

Coastlines which are grown in the hidden bay which constructed by powdered sand, clay, plant humus, etc.

Estuary

ET

Coastlines which are located at the mouth of the river into the sea.

Artificial

AT

Coastlines which are constructed entirely by artificial action like harbours, docks, fish ponds, salt pans, tidal dikes, breakwaters, tidal gates and other structures.