JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2026, Vol. 61 ›› Issue (10): 98-109.doi: 10.6040/j.issn.1671-9352.0.2026.019

• Ecological Risk and Comprehensive Management • Previous Articles    

Evolution trend and governance model of shoreline migration in the Datong River of Qinghai Province over the past decade based on the DSAS model

XUAN Bingxu1,2, MAO Xufeng1,2*, WEI Xiaoyan3, YU Hongyan4, SONG Xiuhua5, ZHANG Lele1,2, DU Kai1,2, YANG Yongxiao1,2, YUAN Donghai1,2, XIE Shunbang5   

  1. 1. Key Laboratory of Land Surface Process and Ecological Conservation(Ministry of Education), Qinghai Provincial Key Laboratory of Physical Geography and Environmental Process, Xining, Qinghai 810008, China;
    2. Academy of Plateau Science and Sustainability, School of Geographic Sciences, Qinghai Normal University, Xining, Qinghai 810008, China;
    3. School of Economics and Management, Qinghai Normal University, Xining, Qinghai 810008, China;
    4. Qilian Mountain National Park Qinghai Service Support Center, Xining, Qinghai 810008, China;
    5. Qinghai Xining Huangshui National Wetland Park Management Service Center, Xining, Qinghai 810008, China
  • Published:2026-10-16

Abstract: The migration pattern of river shorelines is one of the important bases for comprehensive riparian management. Taking the main stream of the Datong River on the northeastern margin of the Qinghai-Tibet Plateau as the study object, this research selected two reaches: the natural shoreline reach(Qilian section)dominated by water conservation functions, and the engineered shoreline reach(Menyuan section)dominated by comprehensive agricultural management functions. Based on the digital shoreline analysis system(DSAS)model, combined with multi-source remote sensing and hydrological reanalysis data, this study quantitatively analyzed the evolutionary characteristics of alpine river shorelines under different management regimes from 2016 to 2025, and proposed a differentiated riparian zonal management model based on “nature conservation-engineering protection”. The results showed that:(1)bank erosion on the left bank of the Datong River was significantly higher than that on the right bank: the average migration rate of the left bank was -0.87 m/a, while that of the right bank was -0.21 m/a.(2)shoreline migration intensity exhibited significant spatial differentiation(p<0.01). The maximum hydraulic energy intensity in the Menyuan section was three times that in the Qilian section, but its average geomorphic activity(1.29 m/a)was 36% lower than that in the Qilian section(2.03 m/a), showing a characteristic of “high driving force but low response”.(3)Human intervention reduced the average geomorphic activity by 0.74 m/a, verifying the effectiveness of the differentiated zonal management model. The findings clarify that retaining geomorphic freedom in nature conservation functional zones to conserve water resources, and strengthening boundary constraints in areas with intensive human activities to ensure safety, provide support for refined management of alpine watersheds.

Key words: shoreline migration, riverbank management, Datong River, DSAS

CLC Number: 

  • TV147
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