Ecological services provided by natural ecosystems are essential to human survival, while the maintenance of ecosystem services is the basis for regional sustainable development. However, ecological services have not been given enough attention, particularly in recent years in China, where has an accelerated urbanization, with high intensity of human activities. These anthropologic activities have greatly altered its natural ecosystem structure, decreased its ecosystem service functions, and seriously threatened its regional ecological security and sustainable development. In this context, a term of " ecological land冶 , which is of great significance in safeguarding important ecological processes and providing essential ecosystem services, was proposed and gained more and more attention. We thus recognize that an identification and security pattern building of critical ecological land is a crucial way to achieve a win鄄win of urban ecological protection and smart growth. The research area of this paper is a newly developed area, locating in the western region of the old of Pingdingshan City, Henan Province, with a total area approximately 301.28 km 2. This region is rich in natural landscape resource and wildlife, with good geological conditions and relatively flat lands. As a major future urban development area in Pingdingshan City, it is necessary to build a comprehensive security pattern for ecological land, which would play a critical role in guiding