Quantifying aeolian sand interception by desert river corridors using an observation-constrained model

Three pairs of traps were installed on opposing riverbanks of the Qiemo, Niya, and Yulongkashi Rivers between 2 and 6 November 2024. The locations, elevations, bank positions, and deployment information of the six bank-side monitoring sites are summarized in Table 1. Each trap carried four vertically stacked collectors positioned at 20, 50, 70, and 120 cm above the surface. Based on the site coordinates, the bank-to-bank distances are approximately 1.02 km for Qiemo, 1.13 km for Niya, and 2.54 km for Yulongkashi; the corresponding west-to-east azimuths are approximately 111.7°, 177.4°, and 7.9°, respectively. The east bank of the Qiemo River and the west banks of the Niya and Yulongkashi Rivers were identified as the windward sides during the observation window, with the opposite banks representing leeward positions. Samples were retrieved between 4 and 7 June 2025, oven-dried, and weighed to ±0.01 g. A total of 650 sediment samples were collected from the southern margin of the Taklimakan Desert during field campaign (2024) and through data compilation from published literature (Li et al., 2025).

2024年11月2日至6日期间，研究人员在且末河（Qiemo River）、尼雅河（Niya River）与玉龙喀什河（Yulongkashi River）的对立河岸布设3组诱捕装置。6个河岸监测点位的位置、高程、河岸方位及布设详情已汇总于表1。每套诱捕装置均搭载4个垂直堆叠的采样收集器，布设高度分别为距河岸表面20 cm、50 cm、70 cm及120 cm。根据点位坐标测算，且末河、尼雅河与玉龙喀什河的河面两岸间距分别约为1.02 km、1.13 km与2.54 km；对应的西向东方位角分别约为111.7°、177.4°与7.9°。观测周期内，且末河东岸、尼雅河西岸与玉龙喀什河西岸被确定为迎风岸，其对岸则为背风岸。样品于2025年6月4日至7日期间回收，经烘箱干燥后称重至精度±0.01 g。本研究共获取650份沉积物样品，样品来源包括2024年野外实地采集工作，以及对已发表文献（Li等，2025）的数据汇总整理，所有样品均采自塔克拉玛干沙漠（Taklimakan Desert）南缘。