==Airborne sensors==Recent technological advances in studying the earth from space have resulted in a new field of phenological research that is concerned with observing the phenology of whole نظام بيئيs and stands of غطاء نباتي on a global scale using proxy approaches.
==Airborne sensors==Recent technological advances in studying the earth from space have resulted in a new field of phenological research that is concerned with observing the phenology of whole ecosystems and stands of vegetation on a global scale using proxy approaches.