新疆和田河对两侧风沙地貌空间格局的影响

doi:10.13866/j.azr.2025.02.13

Abstract

Abstract:

The interaction between wind and water is key in shaping the morphology and spatial distribution of eolian landforms. Quantifying the influence of rivers on eolian landforms has always been challenging. This work selected the Hotan River, which crosses the Taklamakan Desert and the surrounding eolian landforms, as the research object. Based on high-resolution remote-sensing images, DEM and NDVI data, comparing relevant characteristic parameters of typical cross-sections, and analyzing the pattern of eolian landforms and the changes in river channel morphological parameters, the following results were obtained. (1) In the intersection area of the Hotan River and eolian landforms, NDVI=0.05 can be used as a critical value to distinguish the influence of rivers on the pattern of eolian landforms. Consequently, the spatial distribution of the area affected by the Hotan River on eolian landforms is revealed: its area is 20700 km² and its width ranges from 6 to 121 km. (2) The channel morphology of the Hotan River changes little, making it difficult to cause long-distance lateral migration of the river channel; the impact area on the surrounding eolian landforms will not change significantly. In the process of the interaction between wind and water, the Hotan River plays a leading role. Moreover, the southern section belongs to the fully fluvial dominant type, while the northern section belongs to the mostly fluvial dominant type. (3) The distribution pattern of eolian landforms that can be recognized as sabkhas, longitudinal dunes, transverse ridges, and reticulate dunes in sequence from the river channel to both sides results from long-term interactions between wind and water.

Key words: Hotan River, aeolian landform pattern, dune type, interaction between wind and water, Taklamakan Desert

WANG Xumin, GAO Xin, HU Zihao, ZHOU Jie. Effect of the Hotan River on the spatial pattern of surrounding eolian landforms in Xinjiang[J].Arid Zone Research, 2025, 42(2): 333-348.

Figures/Tables 12

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位置	站点	最大风速/(m·s^-1)	平均风速/(m·s^-1)	盛行风向代号	盛行风向/(°)	盛行风向频率/%
北部	阿克苏	18.5	1.7	2	11.25~33.75	10
	阿拉尔	13.1	1.4	3	33.75~56.25	13
东部	策勒	10.0	1.3	13	258.75~281.25	12
	于田	14.0	1.2	13	258.75~281.25	8
	民丰	16.0	1.6	3	33.75~56.25	12
	塔中	20.0	2.2	4	56.25~78.75	13
南部	墨玉	11.7	1.3	15	303.75~326.25	7
	和田	15.0	2.0	11	213.75~236.25	11
	洛浦	13.6	1.7	13	258.75~281.25	10
西部	麦盖提	12.5	1.3	3	33.75~56.25	8
	莎车	12.0	1.3	15	303.75~326.25	10
	皮山	13.5	1.5	15	303.75~326.25	10

河流	河段	河道弯曲度		弯曲度变化率/%	河道比降/‰		比降变化率/%
河流	河段	2013年	2022年	弯曲度变化率/%	2013年	2022年	比降变化率/%
喀拉喀什河	C1~C2	1.117	1.126	0.81	1.234	1.223	-0.89
	C2~C3	1.177	1.188	0.93	0.721	0.715	-0.83
	C3~C4	1.283	1.279	-0.31	0.699	0.701	0.29
玉龙喀什河	C1~C2	1.133	1.121	-1.06	2.664	2.694	1.13
	C2~C3	1.125	1.140	1.33	0.769	0.759	-1.30
	C3~C4	1.377	1.354	-1.67	0.619	0.630	1.78
和田河	C4~C5	1.100	1.129	2.64	0.581	0.567	-2.41
	C5~C6	1.090	1.151	5.60	0.639	0.605	-5.32
	C6~C7	1.162	1.169	0.60	0.605	0.602	-0.50
	C7~C8	1.054	1.049	-0.47	0.640	0.643	0.47
	C8~C9	1.061	1.065	0.38	0.594	0.592	-0.34
	C9~C10	1.037	1.034	-0.29	0.639	0.640	0.16
	C10~C11	1.167	1.147	-1.71	0.600	0.610	1.67

Effect of the Hotan River on the spatial pattern of surrounding eolian landforms in Xinjiang

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