GEOGRAPHICAL SCIENCE

Environmental evolution and driving factors of Woniu Lake in the Da Hinggan Mountains in 1848—2019

Li Qihang, Zhang Can, Zhao Cheng

SCIENTIA GEOGRAPHICA SINICA, 2024, 44(7): 1297-1308. DOI: 10.13249/j.cnki.sgs.20230491

Fig. 2 ²¹⁰Pb, ²²⁶Ra and ¹³⁷Cs activities in core sediment from Woniu Lake and the age-depth model of the lake sequence

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Fig. 1 Geographical location and watershed overview of Woniu Lake
Fig. 3 Variations of conventional indices of WN20A lacustrine sediment core in Woniu Lake
Fig. 4 Distributions of n-alkanes in modern samples from Woniu Lake
Fig. 5 Variations of n-alkane related indices of WN20A lacustrine sediment core in Woniu Lake
Fig. 6 Comparison of the sedimentary records of Woniu Lake with other records
Fig. 7 Biplot of redundancy analysis for composition of n-alkanes and significant explanatory variables in 1950s—1990s and 1990s—2020s
Fig. 8 Comparison of the sedimentary records of Woniu Lake with meteorological data (10 pts SG smoothed) from Arxan Station and archival records of Zhalantun City