Full-time Academic Staff: Teaching Staff

Dr Lishan Ran
冉立山 副教授


Room 10.32

391 77103

Associate Professor

BA (Lanzhou); MA (CAS); PhD (NUS)




Dr. L. Ran received his B.A. degree in Hydrology from the Lanzhou University (2006), M.A. degree in Fluvial Geomorphology from the Chinese Academics of Sciences (2009), and PhD degree in Physical Geography from the National University of Singapore (2013). Before joining the department, he was working as a postdoc in Singapore. His current research interests reside in riverine carbon cycling and its responses to climate change and human activity, and water and sediment transport in large Asian rivers.

Research Interests
  • Riverine Carbon Cycle

  • Greenhouse Gas Emissions

  • Soil Erosion and Carbon Export

  • Chemical Weathering and CO2 consumption

  • Sediment Transport and River Channel Change



Living in a Hazardous World



Annual; 1st Semester


Water Resources and Management



Annual; 2nd Semester


Introductory Spatial Analysis #



Annual; 1st Semester

Selected Publications


  • Kong Q., Xin Z., Zhao Y., Ran L., Xia X. (2022) “Health assessment for mountainous rivers based on dominant functions in the Huaijiu River, Beijing, China”. Environmental Management, (in press)

  • Ran L., Wang X., Li S., Zhou Y., Xu Y-J., Chan C.N., Fang N., Xin Z., Shen H. (2022) “Integrating aquatic and terrestrial carbon fluxes to assess the net landscape carbon balance of a highly erodible semiarid catchment”. Journal of Geophysical Research: Biogeosciences, 127, e2021JG006765 (IF2020= 3.822)

  • Ran L., Yue R., Shi H., Meng X., Chan C.N., Fang N., Shi Z. (2022) “Seasonal and diel variability of CO2 emissions from a semiarid hard-water reservoir”. Journal of Hydrology,  608, 127652 (IF2020=5.722)

  • Huang Y., Xin Z., Ran L., Qin Y., Cai M. (2022) “Topsoil carbon sequestration of vegetation restoration on the Loess Plateau”. Ecological Engineering, 177, 106570. (IF2020=4.035).


  • Yin S., Gao G., Ran L., Lu X., and Fu B. (2021) “Spatiotemporal variations of sediment discharge and in-reach sediment budget in the Yellow River from the headwater to the delta”. Water Resources Research, 57, e2021WR030130 (IF2020=5.24).

  • Nayna O.K., Shirina Begum S., Ran L., Park J. (2021) “Improving carbonate equilibria-based estimation of pCO2 in anthropogenically impacted river systems”. Frontiers in Earth Science, 9:778215. doi: 10.3389/feart.2021.778215 (IF2020=3.103).

  • Chan C.N., Tsang C.L., Lee F., Liu B., Ran L. (2021) “Rapid loss of dissolved CO2 from a subtropical steep headwater stream”. Frontiers in Earth Science, 9: 741678. doi: 10.3389/feart.2021.741678. (IF2020=3.498).

  • Zhang W., Cheng Z., Qiu J., Park E., Ran L., Xie X., Yang X. (2021) “Spatiotemporal changes in mulberry-dyke-fish ponds in the Guangdong-Hong Kong-Macao Greater Bay Area over the past 40 years”. Water, 13(21): 2953. doi: 10.3390/w13212953. (IF2020=3.103).

  • Liu B., Tian M., Shih K., Chan C.N., Yang X., Ran L. (2021) “Spatial and temporal variability of pCO2 and CO2 emissions from the Dongjiang River in South China”. Biogeosciences, 18, 5231-5245. (IF2020=4.295).

  • Ran L., Butman D.E., Battin T.J., Yang X., Tian M., Duvert C., Hartmann J., Geeraert N., Liu S. (2021) “Substantial decrease in CO2 emissions from Chinese inland waters due to global change”. Nature Communications 12, 1730: 1-9, (IF2020=14.919).

  • Gómez-Gener L., Rocher-Ros G., Battin T., Cohen M.J., Dalmagro H.J., Dinsmore K.J., Drake T., Duvert C., Prast A.E., Horgby Å., Johnson M., Kirk L., Machado-Silva F., Marzolf N., McDowel l M.J., McDowell W.H., Miettinen H., Ojala A.K., Peter H., Pumpanen J., Ran L., Riveros-Iregui D.A., Santo s I., Six J., Stanle y E.H., Wallin M.B., White S., Sponseller R.A. (2021). “Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions”. Nature Geoscience 14: 289-294. (IF2020=16.908).

  • Peng Y., Xie X., Lin M., Ran L., Yuan F., Zhou Y., Tang L. (2021) “A Study of Sea Surface Rain Identification Based on HY-2A Scatterometer.” Remote Sensing  13, 3475. (IF2020=4.848).

  • Begum M.S., Bogard M.J., Butman D.E., Chea E., Kumar S., Lu X., Nayna O.K., Ran L., Richey J.E., Tareq S.M., Xuan D.T., Yu R., Park J.H. (2021) “Localized pollution impacts on greenhouse gas dynamics in three anthropogenically modified Asian river systems”. Journal of Geophysical Research: Biogeosciences 126: e2020JG006124. (IF2020=3.822).

  • Chen S., Zhong J., Li S., Ran L., Wang W., Xu S., Yan Z., Xu S. (2021) “Multiple controls on carbon dynamics in mixed karst and non-karst mountainous rivers, Southwest China, revealed by carbon isotopes (δ13C and Δ14C)”. Science of the Total Environment 791: 148347. (IF2020=7.964).

  • Chan C.N., Shi H., Liu B., Ran L. (2021) “CO2 and CH4 emissions from an arid fluvial network on the Chinese Loess Plateau”. Water 13(12): 1614, (IF2020=3.103)

  • Liu W., Wang S., Sang Y., Ran L., Ma Y. (2021) “Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach”. Geomorphology 387: 107768. (IF2020=4.139)

  • Su Y., Yu R., Tian M., Yang X., Ran L., Hu H., Zhang Z., Lu X. (2021) “Major ion chemistry in the headwater region of the Yellow River: impact of land covers”. Environmental Earth Sciences 80: 398. (IF2020=2.784)

  • Ran L., Shi H., Yang X. (2021) “Magnitude and drivers of CO2 and CH4 emissions from an arid/semiarid river catchment on the Chinese Loess Plateau”. Journal of Hydrology 598: 126260. (IF2020=5.722)


  • Ran L., Yang X., Tian M., Shi H., Liu S., Yu R., Zhou Y. (2020) “Riverine export of water, sediment and carbon during flood events in the arid to semiarid Wuding River on the Chinese Loess Plateau”. Earth Surface Processes and Landforms 48: 1777-1788. (IF2020=4.133)


  • Tian M., Yang X., Ran L., Su Y., Li L., Yu R., Hu Z., Lu X. (2019) “Impact of land cover types on riverine CO2 outgassing in the Yellow River Source Region”. Water 11(11): 2243; (IF2020=3.103)

  • Yang, X., Lu, X., Ran, L. and Tarolli, P. (2019) “Geomorphometric Assessment of the Impacts of Dam Construction on River Disconnectivity and Flow Regulation in the Yangtze Basin.” Sustainability 11(12): 3427. DOI: 10.3390/su11123427 (IF2018=2.592).


  • Zhou, Y., Huang, H. and Ran, L. (2018) “Hydrological controls on the evolution of the Yellow River Delta: An evaluation of the relationship since the Xiaolangdi Reservoir became Fully Operational.” Hydrological Processes 33(24): 3633-3649. DOI: 10.1002/hyp.13274 (IF2018=3.189).

  • Ran, L., Lu, X., Fang, N. and Yang, X. (2018) “Effective Soil Erosion control represents a significant Net Carbon Sequestration.” Scientific Reports 8:1201. DOI: 10.1038/s41598-018-30497-4. (IF2018=4.011).

  • Ran, L., Tian, M., Fang, N., Wang, S., Lu, X., Yang, X. and Cho, F. (2018) “Riverine Carbon Export in the arid to semiarid Wuding River Catchment on the Chinese Loess Plateau.” Biogeosciences 15(12): 3857-3871. DOI: 10.5194/bg-15-3857-2018 (IF2018=3.951).

  • Wang, Y., Ran, L., Fang, N. and Shi, Z. (2018) “Aggregate Stability and Associated Organic Carbon and Nitrogen as affected by Soil Erosion and Vegetation Rehabilitation on the Loess Plateau.” Catena 167: 257-265. DOI: 10.1016/j.catena.2018.05.005 (IF2018=3.851).

  • Park, J., Nayna, Omme K., Begum, Most, S., Chea, E., Hartmann, J., Keil, Richard G., Kumar, S., Lu, X., Ran, L., Richey, Jeffrey E., Sarma, Vedula V. S. S., Tareq, Shafi M., Xuan, D. T. and Yu, R. (2018) “Reviews and Syntheses: Anthropogenic Perturbations to Carbon Fluxes in Asian River Systems – Concepts, Emerging Trends, and Research Challenges.” Biogeosciences 15(9): 3049-3069. DOI: 10.5194/bg-15-3049-2018 (IF2018=3.951).


  • Ran, L., Li, L., Tian, M., Yang, X., Yu, R., Zhao, J., Wang, L. and Lu, X. X. (2017) “Riverine CO2 Emissions in the Wuding River Catchment on the Loess Plateau: Environmental Controls and Dam Impoundment Impact.” Journal of Geophysical Research: Biogeosciences 122(6): 1439-1455. DOI: 10.1002/2016JG003713 (IF2018=3.621).

  • Liu, S., Lu, X. X., Xia, X., Yang, X. and Ran, L. (2017) “Hydrological and Geomorphological control on CO2 Outgassing from Low-gradient Large Rivers: An example of the Yangtze River System.” Journal of Hydrology 550: 26-41. DOI: 10.1016/j.jhydrol.2017.04.044 (IF2018=4.405).

  • Ran, L., Lu, X. X. and Liu, S. (2017) “Dynamics of Riverine CO2 in the Yangtze River Fluvial Network and their Implications for Carbon Evasion.” Biogeosciences 14: 2183-2198. DOI: 10.5194/bg-14-2183-2017 (IF2018=3.951).


  • Wang, S., Li, L., Ran, L. and Yan, Y. (2016) “Spatial and Temporal Variations of Channel Lateral Migration Rates in the Inner Mongolian Reach of the Upper Yellow River.” Environmental Earth Sciences 75(18). DOI: 10.1007/s12665-016-6069-4 (IF2018=1.871).

  • Yang, X., Lu, X. X. and Ran, L. (2016) “Sustaining China’s Large Rivers: River Development Policy, Impacts, Institutional Issues and Strategies for Future Improvement.” Geoforum 69: 1-4. DOI: 10.1016/j.geoforum.2015.11.019 (IF2018=2.926).


  • Ran, L., Lu, X. X., Yang, H., Yu, R., Sun, H. and Han, J. (2015) “CO2 Outgassing from the Yellow River Network and its Implications for Riverine Carbon Cycle.” Journal of Geophysical Research: Biogeosciences 120(7): 1334-1347. DOI: 10.1002/2015JG002982 (IF2018=3.621).

  • Ran, L., Lu, X. X., Richey, J. E., Sun, H., Han, J., Yu, R., Liao, S. and Yi, Q. (2015) “Long-term Spatial and Temporal Variation of CO2 Partial Pressure in the Yellow River, China.” Biogeosciences 12(4): 921-932. DOI: 10.5194/bg-12-921-2015 (IF2018=3.951).

  • Ran, L., Lu, X. X., Sun, H., Han, J. and Yu, R. (2015) “Chemical Denudation in the Yellow River and its Geomorphological Implications.” Geomorphology 231: 83-93. DOI: 10.1016/j.geomorph.2014.12.004 (IF2018=3.681).

  • 09/2021
    2021 Social Sciences Outstanding Research Output Award, The University of Hong Kong

  • 12/2014
    CYWater Young Scientist Best Paper Award (AGU Meeting, San Francisco)

  • 06/2010-08/2010
    Hydrological Synthesis Summer Institute Fellowship (UBC, Canada)

  • 08/2009-07/2013
    PhD scholarship, National University of Singapore

Journal review

Earth Surface Process and Landforms, Journal of Hydrology, Hydrological Processes, Scientific Reports, Geomorphology, Hydrological Research, PNAS, International Journal of Sediment Research, Singapore Journal of Tropical Geography, Journal of Geographical Sciences.