抛物线形沙丘研究现状与进展

Status and Progress of Research for Parabolic Dune

抛物线形沙丘是发育在土壤水分、植被条件较好的内陆荒漠区以及沿海地带的固定、半固定沙丘地貌类型。沙源、区域风况、植被和水分状况4个因素控制着抛物线形沙丘的发生和发展,其形态演变与气候变化及人类活动密切相关,对其进行研究有助于了解全球气候变化背景下的地貌及土地沙漠化的演化过程。本文从抛物线形沙丘的形态、分类、成因及发育模式等方面回顾了近年来国内外对抛物线形沙丘的研究进展,并提出了存在的主要问题及今后发展的趋势。

Parabolic dunes belong to a landform type of stable,semi-stable dunes,developed in inland desert areas where the conditions of soil moisture and vegetation are better than other areas,and also developed in coastal zones. The four factors,sand source,regional wind regime,vegetation and soil moisture control the occurrence and development of parabolic dunes,and the evolution of its morphology are closely related to climate change and human activities. The study on parabolic dunes helps to understand the evolution of landforms and land desertification in the context of global climate change. This paper reviewed domestic and abroad progress on researches of parabolic dunes in recent years from the aspects of the morphology,classification,origin and development patterns. The study also proposed the main problems and future development trend on researches of parabolic dunes.