Abstract:Xiong'an New Area, officially described as the millennium plan and one of the key national strategies, is a state-level new area in the Baoding municipality of Hebei province, China and was established in April 2017. It is located about 100 km southwest of Beijing and 50 km east of downtown Baoding. The Xiong'an New Area's main function is to serve as a development hub for the Beijing-Tianjin-Hebei economic triangle. At the same time, the "non-core" functions of the Beijing city are expected to migrate here, including offices of some state-owned enterprises, government agencies, and research and development facilities. Within this context, the Xiong'an New Area raises higher requirements for ecological security. As such, stablely and efficiently ecological security pattern is significant to the national strategy of developing the Xiong'an New Area. However, a set of scientific and flexible planning methods that can be used to guide the development of the Xiong'an New Area is still lacking so far. This study uses the method of spatial multicriteria evaluation, namely, the analytic hierarchy process (AHP) and the ordered weighted averaging (OWA). Based on the quantification of local ecosystem services and ecological risks, the AHP and OWA are integrated with the cloud computation technology of Google Earth Engine for remote sensing images and the InVEST model to simulate the ecological security pattern in the Xiong'an New Area. First, ecological security pattern is an integrative field covering various disciplines. As a result, the decision-making processes should be participatory to correspondingly establish a comprehensive set of indicator system consisted of biophysics and socioeconomics. Second, according to different decision scenarios or risks, the AHP-OWA method provides a complete set of alternatively spatial decisions, ranging from full conservation and neutral to full development. This decision set can quantitatively reveal the tradeoffs between conservation and development and will strengthen decision-making processes for the construction of ecological security pattern in the Xiong'an New Area. Finally, the Baiyangdian protected area and the construction of the promoter and start-up areas will generate the significant effects on the ecological security patterns. Thus, efforts of pattern construction are suggested to focus on the Baiyangdian protected area while systematically planning the construction of the promoter and start-up areas. In the future, toward the objective of becoming green, ecological, and livable, the Xiong'an New Area development plans should set conservation priority as a basic principle while factoring key areas, ongoing conservation plans, and budgets to achieve a "win-win" outcome balancing conservation and development.