WANG Zhengkun, et al. Spatiotemporal variation characteristics and influencing factors of lakes on the inner mongolia plateau[J].Journal of Soil and Water Conservation,2025,39(2):92-101,110.
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Spatiotemporal Variation Characteristics and Influencing Factors of Lakes on the Inner Mongolia Plateau
1.School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China
2.Jixian National Forest Ecosystem Observation and Research Station,National Ecosystem Research Network of China,School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China
3.Bei Dou Institute of Application and Development,Beijing 100089,China
4.Inner Mongolia Hydraulic Research Institute,Huhhot 010020,China
Objective Conducting research on lake area changes on the Inner Mongolia Plateau is of great significance for deep understanding of regional water resource changes. Methods The Google Earth Engine (GEE) platform and Landsat image data were used to obtain annual lake area data on the Inner Mongolia Plateau from 1988 to 2021, and methods such as trend testing and hierarchical segmentation were used to analyze the spatiotemporal change characteristics of lakes and their influencing factors. Results 1) From 1988 to 2021, the area and number of lakes in Inner Mongolia showed a trend of first reduction and then recovery. On an inter-annual scale, the lake area was the largest in 2021, reaching 4 363.63 km², and the smallest in 2002, only 1 915.61 km². In terms of the number of lakes, the number of lakes larger than 1 km2 increased from 71 in 2002 to 458 in 2021. 2) Between 2012 and 2021, the area of lakes on the Inner Mongolia Plateau gradually recovered, and mainly concentrated in Alxa League, Xing’an League and Hulunbuir City. 3) The changes in lake area on the Inner Mongolia Plateau were mainly affected by climate change and human activities. From 1988 to 2012, human activities were the main driving force of lake area changes, and lake area was significantly positively correlated with precipitation. There was a significant negative correlation between lake area and irrigation, grazing and coal production. After 2012, climate factors were the main factors affecting changes in lake area. Conclusion The results elucidate the relationship between lake area changes, climate and human activities on the Inner Mongolia Plateau, and provide a scientific basis for ecological protection and restoration of plateau lakes.
WANG Zhengkun, et al. Spatiotemporal variation characteristics and influencing factors of lakes on the inner mongolia plateau[J].Journal of Soil and Water Conservation,2025,39(2):92-101,110.
WANG Zhengkun, et al. Spatiotemporal variation characteristics and influencing factors of lakes on the inner mongolia plateau[J].Journal of Soil and Water Conservation,2025,39(2):92-101,110.
在进行归因分析时,考虑气候变化和人类活动,气候因素包括年平均气温、年总降水量和风速,人类活动则选择放牧、煤炭开采和灌溉作为指标[10]。本研究的气候数据来自欧洲中期天气预报中心(ERA5),放牧(山羊、绵羊数量)、煤矿开采(煤炭年产量)和灌溉(灌溉农田面积)数据则来源于《内蒙古统计年鉴》[10](表1)。研究采用ERA5的2 m温度、总降水量、10 m u风分量和10 m v风分量数据(https://cds.climate.copernicus.eu)
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