Research efforts related to better understanding and capture of the fertility trends over the time are considered to be of significant interest in the fields of demography and social sciences. In Greece, the overall relationships between fertility and numerous determinants that influence it have been explored at national level. However, the possible spatial heterogeneity in these relationships has not been investigated at any spatial level. The main objective of this study was to explore the spatial stratified heterogeneity in the relationships between fertility and seven socio-economic determinants at the municipality level of Crete Island, Greece. By using demographic data from two censuses in 2001 and 2011, the fertility was measured as crude birth rate (CBR) and the determinants were created as attributes of urbanization, population density, immigration, marriage, female educational level, female unemployment and male employment. The spatial distributions of fertility and determinants for each year as well as their temporal changes were firstly identified. The majority of municipalities of Crete presented high fertility levels in 2001. Between 2001 and 2011, they showed a decline trend, with some exceptions from municipalities located in the north and south of its four prefectures. Furthermore, the Geographical Detector (GeoDetector) technique was applied to reveal the impact of each determinant and their interactions on fertility. The output results revealed that there was obvious spatial stratified heterogeneity of fertility in the island, which could mostly be explained by the immigration in 2001, and the urbanization and population density in 2011. The impact of marriage and female educational level was lower in both years and different (either positive or negative) among the years. The single effects of the prominent determinants were found to be significantly improved from their interactions.

与更好地了解和掌握一段时间内的生育趋势有关的研究工作被认为在人口统计学和社会科学领域具有重大意义。在希腊，已经在国家一级探讨了生育率与影响生育率的众多决定因素之间的总体关系。但是，尚未在任何空间级别上研究这些关系中可能的空间异质性。这项研究的主要目的是探讨希腊克里特岛市级的生育率与七个社会经济决定因素之间关系的空间分层异质性。根据2001年和2011年两次人口普查的人口统计数据，将生育率以粗出生率（CBR）进行衡量，并将决定因素作为城市化，人口密度，移民，婚姻，女性受教育程度，女性失业和男性就业。首先确定了每年的生育率和决定因素的空间分布及其时间变化。克里特岛的大部分城市在2001年都表现出较高的生育率。在2001年至2011年之间，克里特岛的城市呈下降趋势，但位于四个州北部和南部的城市除外。此外，应用了地理检测器（GeoDetector）技术来揭示每个决定因素及其相互作用对生育力的影响。输出结果表明，岛上的生育力存在明显的空间分层异质性，这在很大程度上可以解释为2001年的移民，2011年的城市化和人口密度。结婚和女性受教育程度的影响在这两年中均较低，并且各年间的差异（正面或负面）都不同。发现显着决定因素的单一作用从它们的相互作用中得到显着改善。