###### Abstract  
Production-Living-Ecological Space (PLES) is the functional projection of sustainable development in territory spatial planning. Its rational layout has become the most important task for developing countries to enhance ecological awareness and achieve sustainable goals. This study took the rural areas of Beijing-Tianjin-Hebei (BTH) as an example to analyze the relationship by means of quantitative cumulation between regional endowments (natural factors, location and facilities) and PLES to figure out the preference mechanism. The Boosted Regression Tree model (BRT) was used to obtain the contribution rate of factors and the internal marginal effect between 1980-2018. Our conclusions are as follows: Living space (LS) enjoyed the highest advantage of regional endowment level, followed by production space (PS). Except for the distance to water, other indicators were significantly different in the PLES, and the suitable range of various types was expanded from LS to PS and ecological space (ES). During the transfer, elevation had a universal effect. The process of increasing naturalness was affected by the distance of high-level urban areas, which verified the continuous effect of Chinese ecological civilization. This study clarified the selectivity of regional endowments to PLES, which will greatly guide the direction of regional territory spatial planning and the next step of regional sustainable development. r 13 October 2021 16 November 2021 19 November 2 In the past decade, most studies have cared more about the application of a PLES pattern, such as coupling coordination and conflict evaluation based on current distribution. [PERSON] et al. established an index system to evaluate the PLES function relationship in rural areas of the Beijing-Tianjin-Hebei region [8]. [PERSON] et al. analyzed land-use conflicts in the southeastern coastal areas of China from the perspective of PLES classification [9]. [PERSON] et al. quantitatively evaluated the protection and survival of traditional villages based on the PLES healthy relationship [10]. [PERSON] et al. identified PLES conflicts through a multi-objective suitability evaluation [11]. Other research focused on the functional strength of PLES from land-use versatility. [PERSON] et al. established the PLES zoning method based on the functional symbiosis theory and applied it in Henan Province, China [12]. [PERSON] et al. analyzed the evolution of PLES from the perspective of villagers' behavior [13]. [PERSON] et al. measured the multi-functional value of land use and proposed a spatial classification method [14]. [PERSON] et al. quantitatively identified the evolution process of PLES characteristics in resource-based cities [15]. It was not difficult to find that the application of PLES had formed a complete framework, and a large number of studies had appeared. But what cannot be ignored is that, as a planning item, PLES is the spatial carrier of functional activities. The selection of spatial functions should conform to the basic rules of the regional endowments. Existing studies did not pay attention to it, which resulted in the failure to reflect the practical value of related planning. Therefore, in order to make up for the above-mentioned deficiencies, the endowments preferences of PLES should be investigated to figure out the local rules for scientific territory spatial planning. Many studies in related fields provided methodological references. In research of soil and water cycles, [PERSON]'s correlation coefficient is often used for potential laws such as land use and carbon emissions, topography and precipitation [16; 17; 18]. In land research, the KAPPA index is often used to monitor land-use changes and evaluate the accuracy of remote sensing classification [19; 20; 21; 22]. It can also be used to judge the correlation between the sample and the whole.