3.1. Data Sources
Data used in this study were assembled from a variety of sources (Table 1). Firstly, the primary data
from the field survey were collected through interviews and questionnaires answered by experts in the
related fields of study for identifying factors that are important for ecotourism in Surat Thani Province
along with statistics data, Global Positioning System (GPS) field survey data and other GIS datasets. The
GIS-based land suitability analysis has been applied in a wide variety of situations including sites and
administrative boundaries.