The influence of cascade reservoir construction on sediment biogenic substance cycle in Lancang River from the perspective of phosphorus fractions

Mu, Zheng; Wu, Jinkun; Cheng, Yao; Ji, Lu; Chen, Chenchen; Zhao, Fengxia; Liu, Yu; Hu, Mingming; Bao, Yufei

doi:10.1016/j.ecoleng.2020.106051

Cited by 18 publications

(13 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(a) [57,58]. The development of cascade hydropower could also change the scope of regional sedimentation and affect material circulation in the sediments of cascade reservoirs [6,59]. In the present study, as shown in Figure 7, the deposition processes of Cd, Mn and S in the sediments of the NZD reservoir show strong consistency, whereas the deposition processes of Cd and Mn in the XW reservoir sediments show weak consistency with the S deposition process.…”

Section: Main Mechanism Controlling CD Migration and Deposition In Large Deep Reservoir Sedimentssupporting

confidence: 48%

“…The intercepted water of upstream reservoirs increases sediment deposition rates and reduces the transportation of sediments in downstream reservoirs [4,5]. Retention of sediments in upstream reservoirs and the influx of sediments in downstream areas simultaneously affect the cycle of biological matter in the sediments of downstream reservoirs and pose a severe threat to the water quality, freshwater resources and aquatic ecosystem of these reservoirs [6].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier studies revealed that cascade hydropower development could disrupt the continuity of rivers; such development could cause upstream reservoirs to intercept a large quantity of sediments, increase the sedimentation rate of sediments in the overlying water of the reservoirs and reduce the source of sediments in downstream reservoirs[57,58]. The development of cascade hydropower could also change the scope of regional sedimentation and affect material circulation in the sediments of cascade reservoirs[6,59]. In the present study, as shown in Figure7, the deposition processes of Cd, Mn and S in the sediments of the NZD reservoir show strong consistency, whereas the deposition processes of Cd and Mn in the XW reservoir sediments show weak consistency with the S deposition process.…”

mentioning

confidence: 99%

See 2 more Smart Citations

The Impact of Cascade Large Deep Reservoir on the Migration and Deposition of Cadmium in Lancang River

Cheng

Chen

2021

Sustainability

Self Cite

View full text Add to dashboard Cite

Metal pollution is a global environmental problem. In order to understand the effects of the cascade hydropower development on Cd in reservoir sediments, this study investigated the migration and deposition mechanisms of Cd in reservoir sediments by using the film diffusion gradient technique (DGT) for the cascade large deep reservoirs of the Lancang River (LCR), Nuozhadu (NZD) and Xiaowan (XW). The results show that: (1) Strong correlations amongst the deposition processes of Cd, Mn and S were found in the sediments of the NZD reservoir; weak correlations between the deposition processes of Cd and Mn were found in the sediments of the XW reservoir. (2) Part of labile Cd in the pore water of the NZD reservoir was supplemented by silt and sand, and another part was inherent in the pore water; most of labile Cd in the pore water of the XW reservoir was inherent in the pore water, and minimal replenishment of sediment was noted. (3) Mn is the main factor controlling the migration of Cd in the NZD reservoir. This paper provides an effective resource for understanding the migration and deposition of Cd in the sediments of large deep reservoirs along the LCR.

show abstract

Section: Main Mechanism Controlling CD Migration and Deposition In Large Deep Reservoir Sedimentssupporting

confidence: 48%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

The Impact of Cascade Large Deep Reservoir on the Migration and Deposition of Cadmium in Lancang River

Cheng

Chen

2021

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…In other words, attention should be paid to the control of P pollution in XW Reservoir. Effect Of Cascade Reservoirs On Release Of P Due to the effect of cascade reservoir construction, most of the sediment was deposited in the upstream XW Reservoir, which led to regional sediment replenishment as the main sediment source of the downstream reservoir (Mu et al 2020). The grain size from NZD Reservoir was coarser and contained high content of Al and Mn, and the grain size from XW Reservoir was mainly ne particles, and the content of Fe and Ca were relatively higher than that in NZD Reservoir.…”

Section: Discussionmentioning

confidence: 99%

“…Due to construction of large cascade dams, the interception of sediment and nutrients has been paid more and more attention. In recent years, scholars have made detailed studies on the effect of cascade reservoirs on the composition and distribution of P in LCR (Liu et al 2015, Mu et al 2020.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Cascade Reservoir Construction on Labile Phosphorus in the Sediment of Lancang River

Cheng

Liu

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The influence of cascade reservoirs construction on labile phosphorus (P) is an important scientific problem in the Lancang River. The concentration of labile P in cascade deep-water reservoirs were determined, and the influence of cascade reservoirs construction on the DGT-labile P was analyzed. The construction of cascade reservoirs led to significant differences in concentrations of DGT-labile P, which in the upstream of Xiaowan (XW) Reservoir were differences from that in the downstream Nuozhadu (NZD) Reservoir. The P diffusion fluxes in XW Reservoir were − 8.59–250.50 ng·cm− 2·d− 1, and that in NZD Reservoir were 3.82–24.80 ng·cm− 2·d− 1. The P pollution of XW Reservoir was higher, highlighting the importance of controlling P pollution of XW Reservoir. The construction of cascade reservoirs had made the release of DGT-labile P more dependent on the reductive dissolution of Mn oxides. The early diagenesis transformed bio-availability P (BAP) remobilization into DGT-labile P that made the increase of DGT-labile P/BAP with depth. However, the DGT-labile P/BAP of upstream XW Reservoir was 7.8 times larger than that of downstream NZD Reservoir, which indicated that the construction of cascade reservoirs weakened the remobilization of P in sediment.

show abstract

Spatial dynamics and risk assessment of phosphorus in the river sediment continuum (Qinhuai River basin, China)

Cao,

Zhu,

Gao

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

The influence of cascade reservoir construction on sediment biogenic substance cycle in Lancang River from the perspective of phosphorus fractions

Cited by 18 publications

References 59 publications

The Impact of Cascade Large Deep Reservoir on the Migration and Deposition of Cadmium in Lancang River

The Impact of Cascade Large Deep Reservoir on the Migration and Deposition of Cadmium in Lancang River

The Influence of Cascade Reservoir Construction on Labile Phosphorus in the Sediment of Lancang River

Spatial dynamics and risk assessment of phosphorus in the river sediment continuum (Qinhuai River basin, China)

Contact Info

Product

Resources

About