After the death of higher plants in the terrestrial, in the long geological evolution process, the root canals are formed by the action of water and sand, and the root canals are wind-eroded into large particles of the surface roots of the desert under the action of wind and sand, and the root canals are large.The granules form a root canal in the desert.This new type of aeolian landform is widely distributed in the Taklimakan Biliqm Desert.Based on data from field sampling, UAV close-up aerial survey and Landsat8 OLI remote sensing image, this study used morphological and spatial statistical analysis methods to quantitatively analyze the morphological characteristics and spatial distribution of the root-tube gravel in the Taklimakan Bilicum desert.The results showed that:(1) the shape of root canal in the study area was extremely irregular and the texture was hard, distributed in the form of flakes, tubes and grains in the Taklimakan Biliqum desert. (2) the shape of the root canal in the study area from south to north From the west to the east, the ellipse is mainly dominated by the shape of the inter-hill, and the shape of the root canal in some areas is crescent-shaped, round or rectangular.Overall, the spatial characteristics of the root-tube gravel in the study area are significantly different.(3) The north-south root tube gravel fragmentation degree of the study area is 47.78%-48.74%, the root canal particle distribution average density is 9 925 pieces·m-2, and the east-west root tube gravel fragmentation degree is 19.00%-70.80%, root canal The average density of particle distribution is 9 357 m·m-2, and the average density of root canal particle distribution in the north-south root canal is larger than the east-west direction, and the variation range of the fragmentation degree is smaller than the east-west direction.(4) The overall spatial distribution of the root canal curtain in the study area From south to north, it increases-decreases-increases, and increases from west to east first and then decreases.
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