Nebkha （coppice dune） formation and significance to environmental change reconstructions in arid and semiarid areas  

作　　者：LANG Lili WANG Xunming HASI Eerdun HUA Ting 

机构地区：[1]KeyLaboratoryofDesertandDesertification,ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute,CAS,Lanzhou730000,China [2]CollegeofResourcesScienceandTechnology,BeijingNormalUniversity,Beijing100875,China

出　　处：《Journal of Geographical Sciences》2013年第2期344-358,共15页地理学报（英文版）

基　　金：National Natural Science Foundation of China, No.41071008

摘　　要：Environments in arid and semiarid regions are extremely sensitive to climate changes. High wind activity in these regions has resulted in an extensively developed arid geomorphology, but past environmental changes are poorly understood because of the absence of relatively high-resolution proxies. The accumulation characteristics of nebkhas, which have developed extensively in these regions, can be used as a method of reconstructing environmental changes. Here we summarized recent advances in research on the formation, development, and sediment characteristics of nebkhas and their significance to environmental changes in arid and semiarid regions. Based on the studies of our colleagues, we suggested that research on nebkha formation can provide distinct clues about environmental changes in arid and semiarid regions; however, continued studies are needed.Environments in arid and semiarid regions are extremely sensitive to climate changes. High wind activity in these regions has resulted in an extensively developed arid geomorphology, but past environmental changes are poorly understood because of the absence of relatively high-resolution proxies. The accumulation characteristics of nebkhas, which have developed extensively in these regions, can be used as a method of reconstructing environmental changes. Here we summarized recent advances in research on the formation, development, and sediment characteristics of nebkhas and their significance to environmental changes in arid and semiarid regions. Based on the studies of our colleagues, we suggested that research on nebkha formation can provide distinct clues about environmental changes in arid and semiarid regions; however, continued studies are needed.

关 键 词：nebkha （coppice dune） morphology FORMATION environmental change arid area 

分 类 号：P532[天文地球—古生物学与地层学] Q959.711[天文地球—地质学]