Fluctuations of glacier extent in Lake Nam Co and Nyenchen Tanglha Mountains within a decade as detected by machine learning methods of image analysis for monitoring Lhasa terrane, Tibetan Plateau
Vol.15,No.1(2025)
Machine learning (ML) methods of satellite image analysis were applied in this study for geological-environmental analysis of glacier extent in Tibetan Plateau, China. The purpose of this work is to map the changes in glacier extent as a hydrological resource and its effects on land cover types using remote sensing data. A quantitative cartographic method of image analysis has been developed using ML algorithms and GRASS GIS scripts. Fluctuations of glacier extent are a key trigger for landscape dynamics in Tibetan Plateau. However, the links between spatio-temporal changes in snow and glacier, and associated land cover changes remain elusive. Six Landsat 8-9 multispectral satellite images covering Lhasa were evaluated. The images show fluctuation in glacier coverage from 2013 to 2023 with a 2-year gap between the observations, characterized by strong heterogeneities caused by climate changes. Glacier dynamics was evaluated for northern range of Nyenchen Tanglha Mountains and Lhasa Terrane, Tibetan Plateau, China. The results present an exploratory analysis of six images (on 2013, 2015, 2017, 2019, 2021 and 2023) for glaciological modelling using ML.
machine learning; environment; Earth, China; cartography; mapping; GIS
Barandun, M., Pohl, E., Naegeli, K., McNabb, R., Huss, M., Berthier, E., Saks, T. and Hoelzle, M. (2021): Hot spots of glacier mass balance variability in Central Asia. Geophysical Research Letters, 48: e2020GL092084. doi: 10.1029/2020GL092084
Bolch, T., Kulkarni, A., Kääb, A., Huggel, C., Paul, F., Cogley, J.G., Frey, H., Kargel, J.S., Fujita, K., Scheel, M., Bajracharya, S. and Stoffel, M. (2012): The state and fate of Himalayan Glaciers. Science, 336(6079): 310-314. doi: 10.1126/science.1215828
Chen, W., Zhong, C., Qin, X. and Wang, L. (2023): Deep learning for long-term landslide change detection from optical remote sensing data. In: Intelligent Interpretation for Geological Disasters. Springer, Singapore. doi: 10.1007/978-981-99-5822-1_4
Chen, J., Kuang, X., Lancia, M., Yao, Y. and Zheng, C. (2021): Analysis of the groundwater flow system in a high-altitude headwater region under rapid climate warming: Lhasa River Basin, Tibetan Plateau. Journal of Hydrology: Regional Studies, 36(X): 100871. doi: 10.1016/j.ejrh.2021.100871
Chen, L., Zhang, W., Yi, Y., Zhang, Z. and Chao, S. (2022): Long time-series glacier outlines in the three-rivers headwater region from 1986 to 2021 based on deep learning. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15: 5734-5752. doi: 10.1109/JSTARS.2022.3189277
Cheng, M., Liu, X., Sheng, H. and Yuan, Z. (2023): MAPS: A new model using data fusion to enhance the accuracy of high-resolution mapping for livestock production systems. One Earth, 6(9): 1190-1201. doi: 10.1016/j.oneear.2023.08.012
Dagang, Z., Xiangang, M., Xitao, Z., Zhaogang, S., Zufeng, X., Chaobin, Y., Zhibang, M., Zhonghai, W., Zhenhan, W. and Jianping, W. (2004): Evolution of an Ancient Large Lake in the Southeast of the Northern Tibetan Plateau. Acta Geologica Sinica - English Edition, 78: 982-992. doi: 10.1111/j.1755-6724.2004.tb00220.x
Dagang, Z., Xitao, Z., Xiangang, M., Zhonghai, W., Zhenhan, W., Xiangyang, F., Zhaogang, S., Qisheng, L. and Meiling, Y. (2002): Quaternary lake deposits of Nam Co, Tibet, with a discussion of the connection of Nam Co with Ring Co-Jiuru Co. Acta Geologica Sinica - English Edition, 76: 283-291. doi: 10.1111/j.1755-6724.2002.tb00544.x
Dai, Y., Wang, L., Yao, T., Li, X., Zhu, L. and Zhang, X. (2018): Observed and simulated lake effect precipitation over the Tibetan Plateau: An initial study at Nam Co lake. Journal of Geophysical Research: Atmospheres, 123(13): 6746-6759. doi: 10.1029/2018JD028330
Ehlers, T. A., Chen, D., Appel, E., Bolch, T., Chen, F., Diekmann, B., Dippold, M. A., Giese, M., Guggenberger, G., Lai, H.-W., Li, X., Liu, J., Liu, Y., Ma, Y., Miehe, G., Mosbrugger, V., Mulch, A., Piao, S., Schwalb, A., Thompson, L. G., Su, Z., Sun, H., Yao, T., Yang, X., Yang, K. and Zhu, L. (2022): Past, present, and future geo-biosphere interactions on the Tibetan Plateau and implications for permafrost. Earth-Science Reviews, 234: 104197. doi: 10.1016/j.earscirev.2022.104197
Gardelle, J., Berthier, E. and Arnaud, Y. (2012): Slight mass gain of Karakoram glaciers in the early twenty-first century. Nature Geoscience, 5: 322-325. doi: 10.1038/ngeo1450
He, Q., Kuang, X., Ma, E., Chen, J., Feng, Y. and Zheng, C. (2024): Evolution of runoff components and groundwater discharge under rapid climate warming: Lhasa river basin, Tibetan Plateau. Journal of Hydrology, 628(X): 130556. doi: 10.1016/j.jhydrol.2023.130556
Hu, Z., Yan, D., Feng, M., Xu, J., Liang, S. and Sheng, Y. (2024): Enhancing mountainous permafrost mapping by leveraging a rock glacier inventory in northeastern Tibetan Plateau. International Journal of Digital Earth, 17(1). doi: 10.1080/17538947.2024.2304077
Huang, L., Wang, J., Zhu, L., Ju, J. and Daut, G. (2017): The warming of Large Lakes on the Tibetan Plateau: Evidence from a lake model simulation of Nam Co, China, During 1979 – 2012. Journal of Geophysical Research: Atmospheres, 122(24): 13095-13107. doi: 10.1002/2017JD027379
Ji, Q., Yang, T.-B., Dong, J. and He, Y. (2018): Glacier variations in response to climate change in the eastern Nyainqêntanglha Range, Tibetan Plateau from 1999 to 2015. Arctic, Antarctic, and Alpine Research, 50(1). doi: 10.1080/15230430.2018.1435844
Körner, C., Jetz, W., Paulsen, J., Payne, D., Rudmann-Maurer, K. and Spehn, E. M. (2017): A global inventory of mountains for bio-geographical applications. Alpine Botany, 127: 1-15. doi: 10.1007/s00035-016-0182-6
Kulkarni, A. V., Bahuguna, I. M. (2002): Glacial retreat in the Baspa basin, Himalaya, monitored with satellite stereo data. Journal of Glaciology, 48(160): 171-172. doi: 10.3189/ 172756502781831601
Lazhu, K. Y., Wang, J., Lei, Y., Chen, Y., Zhu, L., Ding, B. and Qin, J. (2016): Quantifying evaporation and its decadal change for Lake Nam Co, central Tibetan Plateau. Journal of Geophysical Research: Atmospheres, 121(13): 7578-7591. doi: 10.1002/2015JD024523
Lemenkova, P. (2021a): Dataset compilation by GRASS GIS for thematic mapping of Antarctica: Topographic surface, ice thickness, subglacial bed elevation and sediment thickness. Czech Polar Reports, 11(1): 67-85. doi: 10.5817/CPR2021-1-6
Lemenkova, P. (2021b): Geodynamic setting of Scotia Sea and its effects on geomorphology of South Sandwich Trench, Southern Ocean. Polish Polar Research, 42(1): 1-23. doi: 10.24425/ppr.2021.136510
Lemenkova, P. (2022a): Console-based mapping of Mongolia using GMT cartographic scripting toolset for processing TerraClimate Data. Geosciences, 3: 140. doi: 10.3390/ geosciences12030140
Lemenkova, P. (2022b): Mapping climate parameters over the territory of Botswana using GMT and gridded surface data from TerraClimate. ISPRS International Journal of Geo-Information, 11(9): 473. doi: 10.3390/ijgi11090473
Lemenkova, P. (2023): Using open-source software GRASS GIS for analysis of the environmental patterns in Lake Chad, Central Africa. Die Bodenkultur: Journal of Land Management, Food and Environment, 74(1): 49-64. doi: 10.2478/boku-2023-0005
Lemenkova, P. (2024a): Exploitation d'images satellitaires Landsat de la région du Cap (Afrique du Sud) pour le calcul et la cartographie d'indices de végétation à l'aide du logiciel GRASS GIS. Physio-Géo, 20(1): 113-129. doi: 10.4000/11pyj
Lemenkova, P. (2024b): Artificial intelligence for computational remote sensing: Quantifying patterns of land cover types around Cheetham Wetlands, Port Phillip Bay, Australia. Journal of Marine Science and Engineering, 12(8): 1279. doi: 10.3390/jmse12081279
Lemenkova, P. (2024c): Support vector machine algorithm for mapping land cover dynamics in Senegal, West Africa, using Earth observation Data. Earth, 5(3): 420-462. doi: 10.3390/earth5030024
Lemenkova, P. (2024d): Artificial neural networks for mapping Coastal Lagoon of Chilika Lake, India, using Earth observation data. Journal of Marine Science and Engineering, 12(5): 709. doi: 10.3390/jmse12050709
Lemenkova, P. (2024e): Deep learning methods of satellite image processing for monitoring of flood dynamics in the Ganges Delta, Bangladesh. Water, 16(8): 1141. doi: 10.3390/w16081141
Lemenkova, P. (2025a): Improving bimonthly landscape monitoring in Morocco, North Africa, by integrating machine learning with GRASS GIS. Geomatics, 5(1): 5. doi: 10.3390/geomatics5010005
Lemenkova, P. (2025b): Automation of image processing through ML algorithms of GRASS GIS using embedded Scikit-Learn library of Python. Examples and Counterexamples, 7: 100180, doi: 10.1016/j.exco.2025.100180
Liao, J., Shen, G. and Li, Y. (2012): Lake variations in response to climate change in the Tibetan Plateau in the past 40 years. International Journal of Digital Earth, 6(6): 534-549. doi: 10.1080/17538947.2012.656290
Li, G., Lin, H. (2017): Recent decadal glacier mass balances over the Western Nyainqentanglha Mountains and the increase in their melting contribution to Nam Co Lake measured by differential bistatic SAR interferometry. Global and Planetary Change, 149: 177-190. doi: 10.1016/j.gloplacha.2016.12.018
Li, Y., Tian, L., Yi, Y., Moore, J. C., Sun, S. and Zhao, L. (2017): Simulating the evolution of Qiangtang No. 1 Glacier in the Central Tibetan Plateau to 2050. Arctic, Antarctic, and Alpine Research, 49(1): 1-12. doi: 10.1657/AAAR0016-008
Li, G., Li, Y., Lin, H., Ye, Q. and Jiang, L. (2021): Two periods of geodetic glacier mass balance at Eastern Nyainqentanglha derived from multi-platform bistatic SAR interferometry. International Journal of Applied Earth Observation and Geoinformation, 104: 102541. doi: 10.1016/j.jag.2021.102541
Li, H., Li, H., Wang, J. and Hao, X. (2023a): Revealing the river ice phenology on the Tibetan Plateau using Sentinel-2 and Landsat 8 overlapping orbit imagery. Journal of Hydrology, 619: 129285. doi: 10.1016/j.jhydrol.2023.129285
Li, Y., Hou, Z., Zhang, L., Qu, Y., Zhou, G., Lin, J., Li, J. and Huang, K. (2023b): Long-term spatio-temporal changes of wetlands in Tibetan Plateau and their response to climate change. International Journal of Applied Earth Observation and Geoinformation, 121: 103351. doi: 10.1016/j.jag.2023.103351
Li, C., Hao, J., Zhang, G., Wang, Y., Fang, H., Hou, W. and Cui, P. (2024a): Extreme snowfall variations in the Southeastern Tibetan Plateau under warming climate. Atmospheric Research, 311: 107690. doi: 10.1016/j.atmosres.2024.107690
Li, J., Chen, Y., Jiao, J., Chen, Y., Chen, T., Zhao, C., Zhao, W., Shang, T., Xu, Q., Wang, H. and Bai, L. (2024b): Gully erosion susceptibility maps and influence factor analysis in the Lhasa River Basin on the Tibetan Plateau, based on machine learning algorithms. CATENA, 235: 107695. doi: 10.1016/j.catena.2023.107695
Liu, W., Xie, C., Zhao, L., Li, R., Liu, C., Wang, W., Liu, H., Wu, T., Yang, G., Zhang, Y. and Zhao, S. (2021): Rapid expansion of lakes in the endorheic basin on the Qinghai-Tibet Plateau since 2000 and its potential drivers. CATENA, 197: 104942. doi: 10.1016/j.catena.2020.104942
Liu, M., Zhang, G., Yin, F., Wang, S. and Li, L. (2022): Relationship between biodiversity and ecosystem multifunctionality along the elevation gradient in alpine meadows on the eastern Qinghai-Tibetan plateau. Ecological Indicators, 141: 109097. doi: 10.1016/j.ecolind.2022.109097
Loibl, D., Lehmkuhl, F. and Grießinger, J. (2014): Reconstructing glacier retreat since the Little Ice Age in SE Tibet by glacier mapping and equilibrium line altitude calculation. Geomorphology, 214: 22-39. doi: 10.1016/j.geomorph.2014.03.018
Lu, Y., Zhang, Z., Kong, Y. and Hu, K. (2022): Integration of optical, SAR and DEM data for automated detection of debris-covered glaciers over the western Nyainqentanglha using a random forest classifier. Cold Regions Science and Technology, 193: 103421. doi: 10.1016/j.coldregions.2021.103421
Luo, K., Wei, Y., Du, J., Liu, L., Luo, X., Shi, Y., Pei, X., Lei, N., Song, C., Li, J. and Tang, X. (2022): Machine learning-based estimates of aboveground biomass of subalpine forests using Landsat 8 OLI and Sentinel-2B images in the Jiuzhaigou National Nature Reserve, Eastern Tibet Plateau. Journal of Forestry Research, 33: 1329-1340. doi: 10.1007/s11676-021-01421-w
Ma, C., Xie, Y., Duan, S. B., Qin, W., Guo, Z., Xi, G., Zhang, X., Bie, Q., Duan, H. and He, L. (2022): Characterization of spatio-temporal patterns of grassland utilization intensity in the Selinco watershed of the Qinghai-Tibetan Plateau from 2001 to 2019 based on multisource remote sensing and artificial intelligence algorithms. GIScience & Remote Sensing, 59(1): 2217-2246. doi: 10.1080/15481603.2022.2153447
Ma, B., Ma, Y., Ma, W., Xie, Z., Han, C. and Wang, B. (2024): Estimating the daily mean blue-sky land surface albedo on the Tibetan Plateau using convolutional neural network. International Journal of Digital Earth, 17(1). doi: 10.1080/17538947.2024.2431621
Pepin, N. C., Deng, H., Zhang, H., Zhang, F., Kang, S. and Yao, T. (2019): An examination of temperature trends at high elevations across the Tibetan Plateau: The use of MODIS LST to understand patterns of elevation-dependent warming. Journal of Geophysical Research: Atmospheres, 124: 5738-5756. doi: 10.1029/2018JD029798
Ren, J., Niu, B., Wang, J., Jin, X., Zhao, L. and Liu, R. (2013): Advances in research of Asian geology – A summary of 1:5M international geological map of Asia project. Journal of Asian Earth Sciences, 72: 3-11. doi: 10.1016/j.jseaes.2013.02.006
Shi, Y., Huang, A., Ma, W., Wen, L., Zhu, L., Yang, X., Wu, Y. and Gu, C. (2022): Drivers of warming in Lake Nam Co on Tibetan Plateau over the past 40 years. Journal of Geophysical Research: Atmospheres, 127(16): e2021JD036320. doi: 10.1029/2021JD036320
Taylor, M., Yin A. (2009): Active structures of the Himalayan-Tibetan orogen and their relationships to earthquake distribution, contemporary strain field, and Cenozoic volcanism. Geosphere, 5(3): 199-214. doi: 10.1130/GES00217.1
Wan, W., Zhao, L., Xie, H., Liu, B., Li, H., Cui, Y., Ma, Y. and Hong, Y.(2018): Lake surface water temperature change over the Tibetan plateau from 2001 to 2015: A sensitive indicator of the warming climate. Geophysical Research Letters, 45: 11,177-11,186. doi: 10.1029/2018GL078601
Wang, J., Zhu, L., Daut, G., Ju, J., Lin, X., Wang, Y. and Zhen, X. (2009): Investigation of bathymetry and water quality of Lake Nam Co, the largest lake on the central Tibetan Plateau, China. Limnology, 10: 149-158. doi: 10.1007/s10201-009-0266-8
Wang, S., Zhang, M., Pepin, N. C., Li, Z., Sun, M., Huang, X. and Wang, Q. (2014): Recent changes in freezing level heights in High Asia and their impact on glacier changes. Journal of Geophysical Research: Atmospheres, 119: 1753-1765. doi: 10.1002/2013JD020490
Wang, X., Zhou, A. and Sun, Z. (2016): Spatial and temporal dynamics of lakes in Nam Co Basin, 1991–2011. Journal of Earth Science, 27: 130-138. doi: 10.1007/s12583-016-0634-3
Wang, X., Zhong, L. and Ma, Y. (2022): Estimation of 30 m land surface temperatures over the entire Tibetan Plateau based on Landsat-7 ETM+ data and machine learning methods. International Journal of Digital Earth, 15(1): 1038-1055. doi: 10.1080/17538947.2022.2088873
Wu, Y., Zhu, L. (2008): The response of lake-glacier variations to climate change in Nam Co Catchment, central Tibetan Plateau, during 1970–2000. Journal of Geographical Sciences, 18: 177-189. doi: 10.1007/s11442-008-0177-3
Wu, X., Wang, N., Lu, A., Pu, J., Guo, Z. and Zhang, H. (2015): Variations in albedo on Dongkemadi Glacier in Tanggula Range on the Tibetan Plateau during 2002–2012 and its linkage with mass balance. Arctic, Antarctic, and Alpine Research, 47(2): 281-292. doi: 10.1657/AAAR00C-13-307
Xia, L., Li, X., Ma, Z., Xu, X. and Xia, Z. (2011): Cenozoic volcanism and tectonic evolution of the Tibetan plateau. Gondwana Research, 19(4): 850-866. doi: 10.1016/j.gr.2010.09.005
Xiao, Z., Sun, X., Wang, J., Deng, Y., Yang, J., Xu, M. and Gao, Y. (2023): Tectonic transition revealed by upper mantle heterogeneities and anisotropy of the SE margin of the Tibetan Plateau: Insights into the Cenozoic intraplate volcanisms. Tectonophysics, 865: 230046. doi: 10.1016/j.tecto.2023.230046
Xiao, S., Nurmemet, I. and Zhao, J. (2024): Soil salinity estimation based on machine learning using the GF-3 radar and Landsat-8 data in the Keriya Oasis, Southern Xinjiang, China. Plant and Soil, 498: 451-469. doi: 10.1007/s11104-023-06446-0
Xue, Y., Hong, X., He, X., Kang, S., Wang, S. and Ding, Y. (2024): An evaluation of TLS-based glacier change assessment in the central Tibetan Plateau. International Journal of Digital Earth, 17(1). doi: 10.1080/17538947.2024.2375527
Yang, M., Nelson, F. E. Shiklomanov, N. I., Guo, D. and Wan, G. (2010): Permafrost degradation and its environmental effects on the Tibetan Plateau: A review of recent research. Earth-Science Reviews, 103(X): 31-44. doi: 10.1016/j.earscirev.2010.07.002
Yang, W., Yao, T., Guo, X., Zhu, M., Li, S. and Kattel, D. B. (2013): Mass balance of a maritime glacier on the southeast Tibetan Plateau and its climatic sensitivity. Journal of Geophysical Research: Atmospheres, 118: 9579-9594. doi: 10.1002/jgrd.50760
Yang, F., Zhang, G.-L., Sauer, D., Yang, F., Yang, R.-M., Liu, F., Song, X.-D., Zhao, Y.-G., Li, D.-C. and Yang, J.-L. (2020): The geomorphology – sediment distribution – soil formation nexus on the northeastern Qinghai-Tibetan Plateau: Implications for landscape evolution. Geomorphology, 354: 107040. doi: 10.1016/j.geomorph.2020.107040
Yang, M., Zhao, W., Cai, J., Yang, Y. and Fu, H. (2023): Evaluation of consistency among MODIS land surface temperature products for monitoring surface warming trend over the Tibetan Plateau. Earth and Space Science, 10: e2022EA002611. doi: 10.1029/2022EA002611
Yao, T., Pu, J., Lu, A., Wang, Y. and Yu, W. (2007): Recent glacial retreat and its impact on hydrological processes on the Tibetan Plateau, China, and surrounding regions. Arctic, Antarctic, and Alpine Research, 39(4): 642-650. doi: 10.1657/1523-0430(07-510)[YAO]2.0.CO;2
Yin, A., Harrison, T. M. (2000): Geologic evolution of the Himalayan-Tibetan orogen. Annual Review of Earth and Planetary Sciences, 28(1): 211-280. doi: 10.1146/annurev.earth.28.1.211
Zhai, Y., Li, W., Shi, S., Gao, Y., Chen, Y. and Ding, Y. (2023): Spatio-temporal dynamics of ecosystem service values in China’s Northeast Tiger-Leopard National Park from 2005 to 2020: Evidence from environmental factors and land use/land cover changes. Ecological Indicators, 155(110734): 1-20. doi: 10.1016/j.ecolind.2023.110734
Zhang, X., Ren, Y., Zhang, D. and Li, K. (2022): Construction of the green infrastructure network for adaption to the sustainable future urban sprawl: A case study of Lanzhou City, Gansu Province, China. Ecological Indicators, 145: 109715. doi: 10.1016/j.ecolind.2022.109715
Zhang, C., Ran, W., Fang, S., Hu, S., Beckmann, M. and Volk, M. (2023): Divergent glacier area and elevation changes across the Tibetan Plateau in the early 21st century. Anthropocene, 44: 100419. doi: 10.1016/j.ancene.2023.100419
Zhao, Z., Huang, A., Ma, W., Wu, Y., Wen, L., Lazhu and Gu, C. (2022): Effects of Lake Nam Co and surrounding terrain on extreme precipitation over Nam Co Basin, Tibetan Plateau: A case study. Journal of Geophysical Research: Atmospheres, 127(10): e2021JD036190. doi: 10.1029/2021JD036190
Zhao, Y., Li, J., Wang, Y., Zhang, W. and Wen, D. (2024): Warming climate-induced changes in cloud vertical distribution possibly exacerbate intra-atmospheric heating over the Tibetan Plateau. Geophysical Research Letters, 51: e2023GL107713. doi: 10.1029/2023GL107713
Zhou, S., Kang, S., Gao, T. and Zhang, G. S. (2010): Response of Zhadang Glacier runoff in Nam Co Basin, Tibet, to changes in air temperature and precipitation form. Chinese Science Bulletin, 55: 2103-2110. doi: 10.1007/s11434-010-3290-5
Zhou, S., Kang, S., Chen, F. and Joswiak, D. R. (2013): Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau. Journal of Hydrology, 491: 89-99. doi: 10.1016/j.jhydrol.2013.03.030
Zhu, L., Xie, M. and Wu, Y. (2010): Quantitative analysis of lake area variations and the influence factors from 1971 to 2004 in the Nam Co Basin of the Tibetan Plateau. Chinese Science Bulletin, 55: 1294-1303. doi: 10.1007/s11434-010-0015-8
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