A book, Environments of Gurbantünggüt Desert, written by Professor Qian Yibing et al., from Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, and Wu Zhaoning from Xinjiang University,...A book, Environments of Gurbantünggüt Desert, written by Professor Qian Yibing et al., from Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, and Wu Zhaoning from Xinjiang University, has been展开更多
Longitudinal dunes are the most widespread dune types in the world sand seas but comprehensive study on the sand surface stability is scarce. The southern part of Gurbantnggt Desert is mainly covered by longitudinal d...Longitudinal dunes are the most widespread dune types in the world sand seas but comprehensive study on the sand surface stability is scarce. The southern part of Gurbantnggt Desert is mainly covered by longitudinal dune in which fixed and semi-fixed dunes occupy over 80% of the total area. Systematic analysis on the climatic conditions, the soil moisture and vegetation distributions, and the sand surface activities showed that the fixed and semi-fixed dunes are in a comprehensive low-energy wind environment. Snow cover and frozen soil provide a good protection to the ground surface in winter. The temporal distribution of precipitation and corresponding variation of temperature create a favorable condition for the desert plants growth, especially for the ephemeral plants. The occurrence of effective winds for sand moving in April to June coincides with the stage of relatively wet sand surface and good vegetation cover, which effectively keep the sand surface stable at the interdune and the plinth of the dunes. Activity sand surface appears only at the crest and the upper part of the sand dunes.展开更多
文摘A book, Environments of Gurbantünggüt Desert, written by Professor Qian Yibing et al., from Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, and Wu Zhaoning from Xinjiang University, has been
基金the National Key Basic Research Project(Grant No.G1999043504)the Knowledge Innovation Project ofCAS(Grant No.KZCX3-SW-326) the“Light of West China”Project of CAS for the talent training plan.
文摘Longitudinal dunes are the most widespread dune types in the world sand seas but comprehensive study on the sand surface stability is scarce. The southern part of Gurbantnggt Desert is mainly covered by longitudinal dune in which fixed and semi-fixed dunes occupy over 80% of the total area. Systematic analysis on the climatic conditions, the soil moisture and vegetation distributions, and the sand surface activities showed that the fixed and semi-fixed dunes are in a comprehensive low-energy wind environment. Snow cover and frozen soil provide a good protection to the ground surface in winter. The temporal distribution of precipitation and corresponding variation of temperature create a favorable condition for the desert plants growth, especially for the ephemeral plants. The occurrence of effective winds for sand moving in April to June coincides with the stage of relatively wet sand surface and good vegetation cover, which effectively keep the sand surface stable at the interdune and the plinth of the dunes. Activity sand surface appears only at the crest and the upper part of the sand dunes.
