A sedimentary evolvement record and its response to anthropogenic-driven pressure in the shallow Honghu Lake over a century

Figures & data

Figure 1. The Map of Hong Lake and the sampling site.

Figure 2. Vertical profile distribution of ²¹⁰Pb_ex in sediment cores HH-A and HH-B in Honghu Lake: (a) HH-A (b) HH-B.

Figure 3. (Grain size or content) change of each group in sediment cores HH-A and HH-B in Honghu Lake: (a) HH-A (b) HH-B.

Figure 4. Sedimentation rate changes in sediment cores HH-A and HH-B in Honghu Lake: (a) HH-A (b) HH-B.

Table 1. Comparison of sedimentation rate among typical lakes in the Yangtze River Basin.

Lake	Sedimentation rate (g·cm^−2·a^−1)	Dating method	Reference
Taihu Lake	0.050–0.113	^210Pb (CRS)	Di et al., 2015
Chaohu Lake	0.224–0.242	^210Pb (CFCS)	Zan et al., 2011
Poyang Lake	0.270–0.350	^210Pb	Mei et al., 2018
Dainchi Lake	0.057–0.300	^137Cs	Zhang et al., 2009
Wujiangdu Reservoir	0.155	^210Pb (CIC)	Yang et al., 2017

Figure 5. Variation of TN, TP, TOC percentage and the value of C/N, N/P along with the HH-B depth.

Table 2. Correlation efficiency of HH-B sediments.

	<4μm	4–16μm	16–64μm	The sedimentation rate	TN	TP	TOC
TN	−0.01^1)	0.19^1)	0.02^1)	0.509^1)	1
TP	0.03^1)	−0.11^1)	−0.01^1)	0.478^1)	0.96^1)	1
TOC	0.01^1)	−0.20^1)	−0.02^1)	0.497^1)	0.97^1)	0.92^1)	1

Di, Z. Z., Gao, Z. J., Zhang, H., & Shan, B. Q. (2015). Study on the historical accumulation of trace metals in the central lake zone of Taihu Lake. Acta Scientiae Circumstantiae, 35, 2867–2874. https://doi.org/10.13671/j.hjkxxb.2014.1026

 Google Scholar

Zan, F. Y., Huo, S. L., Xi, B. D., Su, J., Li, X., Zhang, J. T., & Yeager, K. M. (2011). A 100 year sedimentary record of heavy metal pollution in a shallow eutrophic lake, Lake Chaohu, China. Journal of Environmental Monitoring, 13, 2788–2797. https://doi.org/10.1039/C1EM10385G

 PubMedGoogle Scholar

Mei, X. F., Du, J., Dai, Z. J., Du, J. Z., & Gao, J. J. 2018. Decadal Sedimentation in China’s Largest Freshwater Lake, Poyang Lake. Geochemistry Geophysics Geosystems, 19(8), 2384–2396. https://doi.org/10.1029/2018GC007439

 Web of Science ®Google Scholar

Zhang, Y., Gao, X., Zhong, Z., Chen, J., & Peng, B. (2009). Sediment accumulation of Dianchi Lake determined by 137Cs dating. Journal of Geographical Science, 19(2), 225–238. https://doi.org/10.1007/s11442-009-0225-7

 Web of Science ®Google Scholar

Yang, Y. X., Xiang, P., Lu, W. Q., & Wang, S. L. (2017). The sedimentation rate and burial fluxes of carbon and nitrogen in Wujiangdu Reservoir, Guizhou, China. Earth and Environment, 45(1), 66–73. https://doi.org/10.14050/j.cnki.1672-9250.2017.01.009

 Google Scholar

Data availability statement

Data will be made available on reasonable request.