Abstract
Vegetation patches are often designed in slow-flow water body (i.e., landscape wetlands and lakes) to improve the hydrodynamic characteristics and treat pollutants. We carried out series of indoor flume experiments to study the disturbance effects of mimic flexible vegetation patches on slow-flow water body, changing the shape and location of vegetation patch under different inlet flow rates. The PIV system (particle image velocimetry system) was used to record the two-dimensional flow fields of the water surface. The two-dimensional vector distributions, the velocity change, the water exchange rates α, and the average velocities were studied, and the composition of velocity magnitude was analyzed based on the equilibrium degree. The results show that the circulation area expands with increasing l (the relative distance between the leading edges of the vegetation patches and the flume inlet). Both the vegetation patch location and the inlet flow rates obviously affected α and the average velocities with non-monotonic relationships. Generally, α is higher when l is about 0.42–0.6. The water exchange rate is positively correlated with the average velocity. Compared with the slow-flow water body with no vegetation, the flow velocity decreases within the coverage of the flexible vegetation. The equilibrium degree J basically varies positively with l, indicating that the velocity composition tends to be more uniform and the proportion of high-velocity interval gradually increases. The experiments show that arrangements of aquatic plants can improve the dynamic conditions of water. This paper provided design references for flexible vegetation patches in slow-flow water body.
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Data available by contact to corresponding authors at HW.Zhou@scu.edu.cn (Hongwei Zhou).
References
Ahmad NA, Ali Z, Arish NAM, Daud AMM, Alias NFA (2018) Determination of flow resistance coefficient for vegetation in open channel: laboratory study. IOP Conf Ser Earth Envir Sci. https://doi.org/10.1088/1755-1315/140/1/012019
Bai R, Zhu D, Chen H, Li D (2019) Laboratory Study of Secondary Flow in an Open Channel Bend by Using PIV. Water 11(4):659. https://doi.org/10.3390/w11040659
Bayat J, Hashemi SH, Nikzad MF, Talakesh SMR (2021) Necessity of water treatment to meet lake water quality goals in Chitgar Lake. Lake Reserv Manage 5:1–10. https://doi.org/10.1080/10402381.2020.1843569
Bazarova BB, Kuklin AP (2020) Spatial structure of vegetation in Lake Gusinoe (Republic Byriatia). IOP Conference Series Earth and Environmental Science 677(5):052087. https://doi.org/10.1088/1755-1315/677/5/052087
Cao TG, Yi YJ, Liu HX, Yang ZF (2020) Integrated ecosystem services-based calculation of ecological water demand for a macrophyte-dominated shallow lake. Glob Ecol Conserv. https://doi.org/10.1016/j.gecco.2019.e00858
Caroppi G, Vastila K, Jarvela J, Rowinski PM, Giugni M (2019) Turbulence at water-vegetation interface in open channel flow: experiments with natural-like plants. Adv Water Resour 127:180–191. https://doi.org/10.1016/j.advwatres.2019.03.013
Chang NN, Zhang QH, Wang Q, Luoa L, Wang XCC, Xiong JQ, Han JX (2020) Current status and characteristics of urban landscape lakes in China. Sci Total Environ 712:9. https://doi.org/10.1016/j.scitotenv.2019.135669
Chen RH, Li FP, Zhang HP, Chen L, Zhao JF, Huang ZH (2015) Conceptual mechanism of hydrodynamic impacts on freshwater algea for flow management. J Lake Sci 27(01):24–30. https://doi.org/10.18307/2015.0103
Chen K, Feng M, Zhang T (2018) Experimental study on open-channel flow confluence based on PIV technology. J Hydroelect Eng 37 (in Chinese)
De Serio F, Ben Meftah M, Mossa M, Termini D (2018) Experimental investigation on dispersion mechanisms in rigid and flexible vegetated bed. Adv Water Resour 120:98–113. https://doi.org/10.1016/j.advwatres.2017.08.005
Devi TB, Kumar B (2016) Experimentation on submerged flow over flexible vegetation patches with downward seepage. Ecol Eng 91:158–168. https://doi.org/10.1016/j.ecoleng.2016.02.045
Devi TB, Sharma A, Kumar B (2017) Studies on emergent flow over vegetative channel bed with downward seepage. Hydro Sci J 62(3):408–420. https://doi.org/10.1080/02626667.2016.1230673
Devi TB, Sharma A, Kumar B (2019) Flow characteristics in a partly vegetated channel with emergent vegetation and seepage. Ecohydrol Hydrobiol 19(1):93–108. https://doi.org/10.1016/j.ecohyd.2018.07.006
Everest T, Sungur A, Zcan H (2020) Determination of agricultural land suitability with a multiple-criteria decision-making method in Northwestern Turkey. Int J Environ Sci Te. https://doi.org/10.1007/s13762-020-02869-9
Everest T, Sungur A, Zcan H (2021) Applying the Best-Worst Method for land evaluation: a case study for paddy cultivation in northwest Turkey. Int J Environ Sci Te. https://doi.org/10.1007/s13762-021-03373-4
Gao JX, Dang HB, Liu L, Kong S (2012) Pollution survey and countermeasures of urban slow-flow water body. Appl Mech Mater 178–181:661–665. https://doi.org/10.4028/www.scientific.net/AMM.178-181.661
Gao YX, Zhang YM, Zhang YC (2014) Effects of flow velocity on the release of contaminants from taihu lake sediment. Environ Eng 32(8):10–14
Gao Y, Li H, Zheng Y, Guo RH, Liu ZF (2021) Study of water quality analysis and evaluation of Hengshui Lake. E3S Web Conf. https://doi.org/10.1051/e3sconf/202127201023
Gaudet JM, Roy AG (1995) Effect of bed morphology on flow mixing length at river confluences. Nature. https://doi.org/10.1038/373138a0
Gautam P, Eldho TI, Mazumder BS, Behera MR (2019) Experimental study of flow and turbulence characteristics around simple and complex piers using PIV. Exp Therm Fluid Sci 100:193–206. https://doi.org/10.1016/j.expthermflusci.2018.09.010
Gray E, Elliott JA, Mackay EB, Folkard AM, Keenan PO, Jones ID (2019) Modelling lake cyanobacterial blooms: disentangling the climate-driven impacts of changing mixed depth and water temperature. Freshw Biol 64(12):2141–2155. https://doi.org/10.1111/fwb.13402
Hamidi-Razi H, Mazaheri M, Carvajalino-Fernandez M, Vali-Samani J (2019) Investigating the restoration of Lake Urmia using a numerical modelling approach. J Great Lakes Res 45(1):87–97. https://doi.org/10.1016/j.jglr.2018.10.002
Huai WX, Xue WY, Qian ZD (2015) Large-eddy simulation of turbulent rectangular open-channel flow with an emergent rigid vegetation patch. Adv Water Resour 80:30–42. https://doi.org/10.1016/j.advwatres.2015.03.006
Huang QG, Pan G (2019) On the hydrodynamics of three in-line square cylinders in a uniform flow. Mod Phys Lett B 33(6):7. https://doi.org/10.1142/s0217984919500660
Jalil A, Li YP, Du W, Wang JW, Gao XM, Wang WC, Acharya K (2017) Wind-induced flow velocity effects on nutrient concentrations at Eastern Bay of Lake Taihu. China Environ Sci Pollut Res 24(21):17900–17911. https://doi.org/10.1007/s11356-017-9374-x
Jiang XH, Liu CM (2013) Water renewal time of the Yellow River mainstream based on reservoir action. J Geogr Sci 23(1):113–122. https://doi.org/10.1007/s11442-013-0997-7
Li YP, Wang Y, Anim DO, Tang CY, Du W, Ni LX, Yu ZB, Acharya K (2014) Flow characteristics in different densities of submerged flexible vegetation from an open-channel flume study of artificial plants. Geomorphology 204:314–324. https://doi.org/10.1016/j.geomorph.2013.08.015
Li Y, Guan HL, Wang Y (2018) Effect of water diversion from the Yangtze River to Chang Lake on hydrodynamic characteristics and water quality of Chang Lake. IOP Conf Ser Earth Envir Sci. https://doi.org/10.1088/1755-1315/153/6/062060
Li Y, Zhang Q, Tan Z, Yao J (2020) On the hydrodynamic behavior of floodplain vegetation in a flood-pulse-influenced river-lake system (Poyang Lake, China). J Hydrol. https://doi.org/10.1016/j.jhydrol.2020.124852
Liu HF, Zhu ZX, Liu JL, Liu Q (2019) Numerical analysis of the impact factors on the flow fields in a large shallow lake. Water 11(1):13. https://doi.org/10.3390/w11010155
Liu G, Zhang Q, Wang Y, Liu P (2020) Application of water exchange physical model in artificial new port town. IOP Conf Ser Earth Envir Sci 513:012053. https://doi.org/10.1088/1755-1315/513/1/012053
Londoo OMQ, Romanelli A, Martinez DE, Massone HE (2020) Water exchange processes estimation in a temperate shallow lake based on water stable isotope analysis. Isot Environ Healt S. https://doi.org/10.1080/10256016.2020.1803857
Lozovik PA, Zobkov MB, Borodulina GS, Tokarev IV (2019) Assesing external water exchange of lake bays by water chemistry characteristics. Water Resour. https://doi.org/10.1134/S0097807818050123
Luyiga S, Haande S, Semyalo RP, Kizito YS, Miyingo-Kezimbira A, Brettum P, Solheim AL, Odong R, Asio SM, Jensen KH, Larsson P (2015) How water exchange and seasonality affect the eutrophication of Murchison Bay, Lake Victoria. Limnologica 53:60–73. https://doi.org/10.2989/16085914.2020.1860892
Lv S, Li C, Gao F (2022) Hydrodynamic features and water ecology improvement of Yuehai Lake based on ecological water diversion. Alex Eng J. https://doi.org/10.1016/j.aej.2021.08.023
Maji S, Pal D, Hanmaiahgari PR, Gupta UP (2017) Hydrodynamics and turbulence in emergent and sparsely vegetated open channel flow. Environ Fluid Mech 17(4):853–877. https://doi.org/10.1007/s10652-017-9531-2
Pang M, Song W, Liu Y, Pang Y (2021) Simulation of the parameters effecting the water quality evolution of xuanwu lake. China Int J Env Res Pub He 18(11):5757. https://doi.org/10.3390/ijerph18115757
Peng F, Li K, Liang R, Li X, Zhang P, Yuan Q, Ji Q, Zhu Z, Wang Y (2021) Shallow lake water exchange process before and after water diversion projects as affected by wind field. J Hydrol. https://doi.org/10.1016/j.jhydrol.2020.125785
Qu G, Zhao ZC, Yao SM, Zhu YH, Chen D (2019) Study on the interaction mechanism of flow and sediment in an open channel containing vegetation. Appl Ecol Environ Res 17(5):11451–11473. https://doi.org/10.15666/aeer/1705_1145111473
Rizalihadi M (2019) The effect of density and height of vegetation in open channel on the Manning’s coefficient. Matec Web Conf. https://doi.org/10.1051/matecconf/201925801002
Rizhinashvili A (2017) Small and shallow previously unstudied lakes: land-use, overgrowth and eutrophication. Manag Environ Qual 28(1):120–136. https://doi.org/10.1108/meq-09-2015-0170
Singh NK, Gourevitch JD, Wemple BC, Watson KB, Rizzo DM, Polasky S, Ricketts TH (2019) Optimizing wetland restoration to improve water quality at a regional scale. Environ Res Lett 14(6):8. https://doi.org/10.1088/1748-9326/ab1827
Song WW, Xu Q, Fu XQ, Zhang P, Pang Y, Song DH (2018) Research on the relationship between water diversion and water quality of Xuanwu Lake China. Int J Env Res Pub Hea. https://doi.org/10.3390/ijerph15061262
Tan C, Huang BS, Liu D, Qiu J, Chen H, Li YL, Hu Z (2019) Effect of mimic vegetation with different stiffness on regular wave propagation and turbulence. Water 11(1):15. https://doi.org/10.3390/w11010109
Tan S, Liu Q, Li Y (2017) Spatial-temporal characteristics of spatial balance degrees on land use in China[J]. China Land Sci 31(11) (in Chinese)
Tang C, He C, Li Y, Acharya K (2021) Diverse responses of hydrodynamics, nutrients and algal biomass to water diversion in a eutrophic shallow lake. J Hydrol 593(11):125933. https://doi.org/10.1016/j.jhydrol.2020.125933
Vermaire JC, Taranu ZE, MacDonald GK, Velghe K, Bennett EM, Gregory-Eaves I (2017) Extrinsic vs intrinsic regimes shifts in shallow lakes: long-term response of cyanobacterial blooms to historical catchment phosphorus loading and climate warming. Front Ecol Evol. https://doi.org/10.3389/fevo.2017.00146
Wan R, Dai X, Shankman D (2018) Vegetation response to hydrological changes in Poyang Lake, China. Wetlands. https://doi.org/10.1007/s13157-018-1046-1
Wang L, Li E, Wang F, Su X (2021) Analysis of Water Structure Evolution in Ordos Based on information entropy and equilibrium degree[J]. J Yellow River Cons Tech Inst 33(3) (in Chinese)
Wei CY, Chang JR (2002) Wake and base-bleed flow downstream of bluff bodies with different geometry. Exp Therm Fluid Sci 26(1):39–52. https://doi.org/10.1016/s0894-1777(02)00111-5
Wu T, Wang S, Su B, Wu HX, Wang GQ (2021) Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods. Ecol Indic 126(15):107714. https://doi.org/10.1016/j.ecolind.2021.107714
Xie QH, Li DF, Chen DY, Fan RH, Zhang HW (2010) On urban river current based on 2D flow model. J Zhejiang Univ Water Resour Elec Power 22(04):1–6 (in Chinese)
Xie MX, Yao SS, Liu YQ (2013) Environmental assessment of the water exchange ability of shuidong Bay China based on numerical simulations. Adv Mater Res. https://doi.org/10.4028/www.scientific.net/AMR.726-731.1006
Xu ZS, Otoo E, Chen YP, Ding HW (2019) 2D PIV measurement of twin buoyant jets in wavy cross-flow environment. Water 11(2):18. https://doi.org/10.3390/w11020399
Yan PR, Tian Y, Lei XH, Fu Q, Li TX, Li JH (2019) Effect of the number of leaves in submerged aquatic plants on stream flow dynamics. Water 11(7):15. https://doi.org/10.3390/w11071448
Yang H, Wang J, Li J, Zhou H, Liu Z (2021) Modelling impacts of water diversion on water quality in an urban artificial lake. Environ Pollut 276(2):116694. https://doi.org/10.1016/j.envpol.2021.116694
You AJ, Hua L (2019) Optimization and effect of inner water diversion and distribution in the west lake of Hangzhou. IOP Conf Ser: Earth Envir Sci. https://doi.org/10.1088/1755-1315/264/1/012018
You XY, Zhang CX (2017) On improvement of water quality of a reservoir by optimizing water exchange. Environ Prog Sustain. https://doi.org/10.1002/ep.12693
Zhang J, Zhong Y, Huai W (2018a) Transverse distribution of streamwise velocity in open-channel flow with artificial emergent vegetation. Ecol Eng 110:78–86. https://doi.org/10.1016/j.ecoleng.2017.10.010
Zhang M, Dolatshah A, Zhu W, Yu GL (2018b) Case study on water quality improvement in Xihu Lake through diversion and water distribution. Water. https://doi.org/10.3390/w10030333
Zhao N, Cao YQ, Huang LX (2008) Repairing technology and protection countermeasures for slow-flow water bodies pollution. S. North Water Transf Water Sci Technol 6:101–103. https://doi.org/10.13476/j.cnki.nsbdqk.2008.03.007
Zhong L, Jiang T, Zhang J, Liu J (2019) PIV experimental study on velocity fluctuations of turbulent flow in open channel. Adv Eng Sci, https://doi.org/10.15961/j.jsuese.201800495, (in Chinese)
Zhu ZX, Liu HF (2018) Numerical study of the flow fields in the vegetated Baihe Lake. MATEC Web Con. https://doi.org/10.1051/matecconf/201820307007
Acknowledgements
The research was supported by the Key Technology Research of Urban Slow-Flow Water Body Construction and Protection Program. The authors are grateful to comments from the editors and reviewers.
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The research was supported by the Key Technology Research of Urban Slow-Flow Water Body Construction and Protection Program.
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LP, XY and HZ provided conceptualization; LP, RJ, JC and NL did experiment; LP and RJ done writing—original draft preparation; XY, HZ, JW performed writing—review and editing; HZ performed project administration. All authors have read and agreed to the published version of the manuscript.
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Pan, L., Jiang, R., Yang, X. et al. Experimental study on the disturbance effect of flexible vegetation patches of different shapes on slow-flow water body. Int. J. Environ. Sci. Technol. 20, 3133–3150 (2023). https://doi.org/10.1007/s13762-022-04166-z
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DOI: https://doi.org/10.1007/s13762-022-04166-z