Progresses and future directions on yardangs

作     者：DING Zhaojing LAI Zhongping WANG Jiang 丁召静;赖忠平;王江

作者机构：College of Urban and Environmental SciencesHubei Normal UniversityHuangshi 435000China Hubei Key Laboratory of Critical Zone EvolutionSchool of Earth SciencesChina University of GeosciencesWuhan 430074China Institute of Marine SciencesGuangdong Provincial Key Laboratory of Marine Disaster Prediction and PreventionShantou UniversityShantou 515063China 

出 版 物：《地球环境学报》 (Journal of Earth Environment)

年 卷 期：2024年第15卷第4期

页      面：566-582页

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：国家自然科学基金项目(42202262) 湖北省自然科学基金项目(2022CFB687) 湖北省教育厅科学技术研究计划(Q20222505) 流域关键带演化湖北省重点实验室开放基金(2021F04) 

主　　题：yardang landform evolutionary model chronology wind erosion surface process 

摘      要：Background,aim,and scope Yardang is a kind of typical wind-eroded landform in arid zones both on Earth and other *** geomorphic process records the surface changes and climate,which may play a vital role in exploring the coupled landform-atmosphere system in arid ***,significant progresses have been made in this research field,and a review is still absent,which is the aim of the *** and methods Previous studies on the distribution,composition,morphology,and climatic driving force of yardang landform were *** Earth yardang’s three evolutionary models were generalized:morphology evolution model,altitude evolution model and climate driven evolution *** yardang and its evolution are also summarized:the morphology is dominated by long ridges on Venus and Titan,and three yardang evolution hypotheses and an indirect dating method based on stratigraphic contact have been studied on *** In this study,firstly,the definition and morphology of yardang were described to define its ***,we argue that yardang evolution has two dimensions:short-term variation and longterm *** the short-term variation,the morphological evolution of yardang on earth can be divided into four stages:embryonic stage,juvenile stage,mature stage,and demise *** the long-term variation,the evolution of yardang on earth is climate-driven,i.e.,it is controlled by atmospheric circulation changes during glacial-interglacial ***,yardang research on extraterrestrial bodies was also summarized:yardang has been found on Mars,Venus,and Titan,and the research focus by far are on geomorphology ***(1)Yardang landform is an erosion landform with alternating ridges and troughs,with main form of whale back shape and fluctuations in the range of aspect ratios;(2)the short-term variation of yardang is manifested in its morphological evolution and height change,while the long-term variation