期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：237
期号：3
页码：032014
DOI：10.1088/1755-1315/237/3/032014
出版社：IOP Publishing
摘要：The research region is located in the northeast margin of Tarim, which is characterized by a typical continental arid desert climate, with a scanty rainfall and large difference in temperature between day and night. The research region is relatively stable in geology and exposed to the long-term weathering and serious erosion of seasonal surface water, which lead to the typical landform of "planation surface" and Yadan. In order to investigate the long-term stability of superficial facilities in this region, a series of methods have been conducted to study the erosion characteristics of soil and rocks in some representative positions, i.e., soil erosion monitoring in different places, modelling analysis of soil erosion, terrestrial cosmogenic nuclides concentration measurement, denudation amount measurement of stone relics, and estimation of regional strata denudation. The results demonstrate that erosion rate is less than 0.3m/104a for sandstone in flat surface, 0.8 m/104a in seasonal gully. The erosion rate of soil is averagely 0.16~0.19cm/a for palaeo-lacustrine deposition area since late pleistocene epoch, 0.42cm/a for monitoring platform, 3.97cm/a for erosional depression. The denudation rate is estimated to be 0.9 mm/104a for siliceous stone relics, 9.5~11.6 mm/104a for sandstone and granite relics, and 4.0mm/a for ancient architecture made of soil in research area. By the method of tectonic trend of missing strata, it is estimated that the erosion rate is less than 0.35 m/104a since the tertiary period when a steady stage of uplift and denudation begin in the research region.
