Based on 30 m horizontal resolution digital elevation models and remote sensing images, this study extracted 7th stream-order river network of 32 endorheic rivers in the Junggar Basin and analyzed the hierarchical river network structure of endorheic sub-basins under different underlying surface conditions (glacier-dominated and desert-dominated types) in arid climate. The results indicate that although the sub-basins in the Junggar Basin generally conform to the self-similarity law of river network structure across stream orders 1 to 4, the glacier-dominated sub-basins exhibit higher bifurcation ratios and drainage densities than the desert-dominated sub-basins, due to their greater precipitation and higher vegetation coverage. Further analysis reveals that the structural parameters of river networks in glacier-dominated basins are primarily controlled by temperature, potential evapo-transpiration, and soil water content, whereas in desert-dominated basins, these parameters correlate more closely with oasis area and vegetation characteristics.

基于30 m水平分辨率的数字高程模型和遥感影像数据, 提取准噶尔盆地32个内陆河的7级水系, 分析干旱气候条件下不同下垫面条件(以冰川为主型和以荒漠为主型)的内陆河子流域的水系分级结构特征。结果表明, 尽管准噶尔盆地各子流域在1~4级范围内总体上满足水系结构自相似定律, 但以冰川为主型子流域由于降水量较大且植被覆盖率较高, 其分支比以及河网密度均高于荒漠为主型子流域。进一步分析表明, 以冰川为主型流域的水系结构参数主要受温度、潜在蒸散发和土壤含水量因素控制, 以荒漠为主型流域的水系结构参数则与绿洲面积和植被覆盖特征的关系更密切。