Ecological Engineering最新文献

{"title":"Living in a material world: Support for the use of natural and alternative materials in coastal restoration and living shorelines","authors":"Adrian Sakr,&nbsp;Andrew H. Altieri","doi":"10.1016/j.ecoleng.2024.107462","DOIUrl":"10.1016/j.ecoleng.2024.107462","url":null,"abstract":"<div><div>The size and expense of coastal restoration efforts are increasing exponentially to mitigate anthropogenic environmental impacts and achieve international conservation goals. As part of these efforts, a variety of conventional materials including plastic, metal, and concrete are used in breakwater, settling substrate, vegetation stabilization, and sediment retention structures because of their availability, inexpensive purchase price, and predictable properties. However, questions regarding sustainability arise given the adverse environmental impacts of the life cycle processes for each material. Life cycle impacts from production, transportation, installation, and degradation should be key considerations in material selection, with criteria that allow decision makers an opportunity to evaluate less impactful alternative materials. Natural and reduced-impact alternative materials include natural elements such as plant fibers and rock as well as reduced-impact materials such as bio-based and biodegradable plastics. These items may have comparable availability and functionality and exhibit reduced carbon, chemical, and particulate emission impacts. However, they are often not selected for full-scale restoration applications due to uncertainties regarding their financial cost and ability to replace conventional materials. Here, we compare conventional and reduced-impact alternative materials for use in coastal restoration applications. The function, engineering performance, and life cycle environmental impacts are reported for each material followed by a presentation of case studies that illustrate the value of appropriate material selection. We then compare the impacts of material sourcing and product lifespan to develop a material selection framework enhancing the selection process of reduced-impact alternatives. This study reveals a need for more detailed and standardized life cycle information about the materials used in the coastal environment. The proposed framework allows more emphasis on material life-cycle implications in the design process, which could lead to enhanced use of alternative over conventional materials and improved project value and outcomes.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107462"},"PeriodicalIF":3.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of restorative treatments confirmed in a restored pond","authors":"Chang Seok Lee ,&nbsp;Dong Uk Kim ,&nbsp;Bong Soon Lim ,&nbsp;Gyung Soon Kim ,&nbsp;Ji Eun Seok","doi":"10.1016/j.ecoleng.2024.107430","DOIUrl":"10.1016/j.ecoleng.2024.107430","url":null,"abstract":"<div><div>As a part of a plan to build the National Institute of Ecology, an eutrophicated farm pond was ecologically restored. As an artificial pond, the Yonghwasil Pond of a rectangular shape with a steep slope was improved to an elliptical shape of gentle slope. In order to improve the serious eutrophication problem, the sediments at the bottom were dredged. Furthermore, in order to induce the establishment of various plants, the maximum depth of the pond was increased to 2.5 m, and various depths were induced with a gentle slope. In the restoration of vegetation, riparian and emergent vegetation were first introduced to stabilize the space secured for the restoration of the pond, and the rest of the vegetation was left in the natural process. As a result, the Yonghwasil Pond, which was covered with simple vegetation due to severe eutrophication, was transformed into a complete pond landscape as various vegetation types established by reflecting the water depth and water table. The restoration effect of this ecologically restored pond was evaluated. In this pond, floating plants, emergent plants, wetland plants, and riparian plants are variously established by reflecting water depth and water table. As a result of stand ordination based on the vegetation data obtained from the restored Yonghwasil Pond and a natural lake selected as the reference site, the species composition resembled that of the reference site. Diversity based on vegetation type, community, and species levels tended to be higher than that of the reference site. The proportion of exotic species increased due to the disturbance that occurred during the restoration process, but continued to decrease as vegetation introduced for restoration established. Considering these results comprehensively, the restorative treatment served to increase both the biological integrity and ecological stability and, as such, achieved the restoration goal from the viewpoint of the pond structure. The Net Ecosystem Production (NEP) evaluated for vegetation settled in the 12th year after restoration showed a significantly higher level compared to forest vegetation. Therefore, the restored Yonghwasil Pond was evaluated to have a high restoration effect even in terms of function.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107430"},"PeriodicalIF":3.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long term performance of Nature-Based Solutions as decentralized wastewater treatment: a case study of a retail store in southern Italy","authors":"F. Licciardello ,&nbsp;S. Barresi ,&nbsp;A. Marzo ,&nbsp;A. Rizzo ,&nbsp;L. Sciuto ,&nbsp;D. Ventura ,&nbsp;G.L. Cirelli","doi":"10.1016/j.ecoleng.2024.107459","DOIUrl":"10.1016/j.ecoleng.2024.107459","url":null,"abstract":"<div><div>The aim of this study is to evaluate the removal efficiency and the hydraulic behavior of the 10-year-old hybrid treatment wetland (TW) system treating effluents of the IKEA® store of Catania (Eastern Sicily, Italy), under Mediterranean semi-arid climate conditions. The system is placed downstream to the conventional wastewater (WW) treatment of the store, that includes a sequential batch reactor (SBR) followed by a horizontal subsurface treatment wetland (HF) unit and two vertical subsurface flow treatment wetlands (VF1 and VF2) units. The assessment of chemical, physical, and microbiological parameters in treated WW was carried out through regular monitoring activities, occurring approximately on a monthly basis, over a 8-year period spanning from 2016 to 2023. Up to 72 samples were collected for the following parameters measurements: total suspended solids (TSS), BOD₅, COD, total phosphorus (TP), ammonia (as NH₄), nitrate (as NO₃-N), nitrite (as NO₂-N), total nitrogen (TN) and <em>E. coli</em>. Hydraulic conductivity at saturation (<em>K</em>_<em>s</em>) measurements and tracer tests were conducted to evaluate the extent of clogging and to characterize the hydraulic behavior within the HF unit. Results obtained during the entire monitoring period show the following mean and standard errors (±) removal efficiency ranges (%): TN 21(±11)-80(±9); TSS 18(±42)-95(±3); COD 28(±23)-93(±2); BOD₅ 31(±10)-85(±44); TP 14(±6)-49(±19); NH₄ 50(±50)-95(±3); <em>E. coli</em> was abated with a mean range of 3.3(±0.2)-4.8(±0.4) Ulog reduction, reaching not detectable values in most samples analyzed since 2018. The efficacy of the treatment system is assessed in the context of both national and European regulatory frameworks governing effluent discharge and water reuse standards. <em>K</em>_<em>s</em> values and tracer test results agree in showing the progressive clogging of the HF unit influencing the hydraulic behavior of the unit giving useful on the management of TWs in Mediterranean area. Finally, the performance results also indicate that the overall treatment is not affected by the HF unit clogging.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107459"},"PeriodicalIF":3.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Are floating mangrove breakwaters effective for wave attenuation? - A Literature Review","authors":"K. Risheharan ,&nbsp;J. Baumeister ,&nbsp;M.F. Adame","doi":"10.1016/j.ecoleng.2024.107436","DOIUrl":"10.1016/j.ecoleng.2024.107436","url":null,"abstract":"<div><div>Human-induced global warming, caused by greenhouse gases, raises temperatures and sea levels, posing risks to coastal communities and ecosystems. Interest in nature-based alternatives like mangroves and living shorelines is growing due to their ecological benefits and ability to mitigate waves, protecting vulnerable coastlines. Floating breakwaters have demonstrated promise in attenuating waves compared to their submerged counterparts. Similarly, floating mangroves detached from the shoreline and suspended on the water's surface have emerged as an alternative solution due to their potential ability to reduce wave force while providing additional benefits. This review aims to compile information on field, laboratory, and numerical experiments of floating breakwaters and mangroves testing their efficiency for wave attenuation. We found that floating mangroves have the potential for wave reduction, although this differed among mangrove species, with the highest reduction in <em>Rhizophora</em> (80 %) followed by <em>Avicennia officinalis</em> (55 %), <em>Sonneratia</em> (50 %), and <em>Kandelia candel</em> (20 %). <em>Rhizophora spp</em> was the most studied and likely to be the most effective due to its complex root system. Field trials and feasibility studies showed that testing the wave-reducing ability of this integrated structure is essential to tackle the challenges caused by strong waves. Ultimately, this review seeks to deepen our comprehension of mangrove-based floating solutions. It highlights their significance in protecting coastlines and promoting ecological balance in rising sea levels.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107436"},"PeriodicalIF":3.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First results of soil and water bioengineering interventions to stabilise and control erosion processes in hydroelectric power plant reservoirs in Brazil","authors":"Rita dos Santos Sousa ,&nbsp;Junior Joel Dewes ,&nbsp;Hans Peter Rauch ,&nbsp;Fabrício Jaques Sutili ,&nbsp;Stephan Hörbinger","doi":"10.1016/j.ecoleng.2024.107458","DOIUrl":"10.1016/j.ecoleng.2024.107458","url":null,"abstract":"<div><div>Reservoir banks are highly susceptible to erosion processes that result in a loss of stability. The main factors that cause erosion on reservoir banks are wave action and the oscillation of the water level. The aim of this study was to investigate four different soil and water bioengineering measures to stabilise and control erosion processes on the banks of reservoirs. The selection of plant species must follow various technical and ecological criteria. The study area is located at Itá hydropower plant. The development of the techniques and the used plants were monitored over a period of 28 months. Permanent plots were installed to assess plant development and erosion. When combined with support structures, the plants used were able to develop well. The average diameter and height of the plants increased in all sections. For the average plant height after 5 months, the best results were obtained in section A (1.32 m), and after 28 months the plants in sections C and B had an average height of 2.05 m and 2.01 m respectively. The greatest deposition occurred within the intervention zone, ranging from −6.4 cm/year (section A) to −0.6 cm/year (section D). For the pins 3/7, the largest soil deposition occurred in section B (−3.4 cm/year), while a soil loss (0.1 cm/year) was measured in section C. This confirms the positive technical effect of inert structures in combination with plants. The structures combined with vegetation, creates a barrier effect that protects the shore and enables the deposition/retention of sediments.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107458"},"PeriodicalIF":3.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fish indicator species and ecological restoration measures in the Three Gorges Reservoir","authors":"Yue Shi ,&nbsp;Juntao Fan ,&nbsp;Fen Guo ,&nbsp;Aopu Li ,&nbsp;Yuyin Ao","doi":"10.1016/j.ecoleng.2024.107465","DOIUrl":"10.1016/j.ecoleng.2024.107465","url":null,"abstract":"<div><div>The utilization of fish indicator species has emerged as a crucial metric for measuring the health of riverine ecosystems and assessing the efficacy of ecological restoration initiatives. The Three Gorges Dam (TGD), a globally renowned hydraulic engineering marvel, has significantly impacted the environments of the entire Yangtze River. However, few studies have systematically sorted out the indicator species of fish affected by artificial environment and the typical ecological restoration measures in the Three Gorges Reservoir (TGR), a typical riverway reservoir. We summarized the ecological pressures confronting the aquatic ecosystem in the TGR, analyzed how the operation of the dam affected fish and its mechanism, and the evolution of fish dominant species before and after dam construction. This study proposes a list of fish indicator species for the TGR, characterized by degree of endangerment, migratory type, and spawning behavior. Furthermore, it delineates five typical ecological restoration measures—fishing ban, habitat substitution, ecological operation of dams, artificial fish nests, and stocking—implemented to mitigate the impact of the TGD on fish. This study compares the effectiveness of these diverse ecological restoration measures and presents future research prospects. It is suggested that ecological restoration measures based on habitat integrity protection are the most effective. Moreover, we underscore the need for complementary interactions and long-term monitoring among ecological restoration measures to maximize the ecological restoration outcome.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107465"},"PeriodicalIF":3.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of sand-fixing measures for restoration of vegetation and mitigation of wind erosion and deposition in a degraded sandy rangeland, northern China","authors":"Akito Kono ,&nbsp;Keiichi Kimura ,&nbsp;Susumu Yamada ,&nbsp;Tomoyo F. Koyanagi ,&nbsp;Norikazu Yamanaka ,&nbsp;Ken Yoshikawa ,&nbsp;Kazuaki Tsuchiya ,&nbsp;Toshiya Okuro","doi":"10.1016/j.ecoleng.2024.107456","DOIUrl":"10.1016/j.ecoleng.2024.107456","url":null,"abstract":"<div><div>Sand-fixing measures, including ground surface stabilization, have been implemented to restore sustainable productive activities on degraded sandy dunes. Wind erosion in dune areas with vegetation cover is generally assessed by vegetation cover. However, research in this area is limited due to the presence of varying thresholds of vegetation cover in different environments. Our objective was to investigate the factors influencing vegetation dynamics and the effect of vegetation on wind erosion and deposition mitigation through the evaluation of the application of dune stabilization measures. Vegetation and wind erosion surveys were conducted over four years on dunes where dune stabilization measures (fencing, installation of straw checkerboard, and seeding of two native plants) were applied by the local government in the Hulunbuir grasslands of China. The results showed that the straw checkerboard and sowing of native plants increased the vegetation cover and reduced the proportion of Amaranthaceae annual forbs, which are pioneer species on the sandy dunes. The seeded perennial grass <em>Elymus</em> spp. had a nursing effect after several years of construction and helped the growth of the seeded legume shrub <em>Caragana microphylla</em>. On the other hand, the growth of <em>C. microphylla</em> was affected by precipitation in the first few years after seeding, with different results depending on the year of seeding. Wind erosion was greatly mitigated where straw checkerboards were installed. The amount of ground surface variability showed a threshold relationship with vegetation cover, with wind erosion being significantly mitigated where vegetation cover was above about 5 %. The installation of straw checkerboards and the seeding of native plants were effective in stabilizing the ground surface on the dunes. However, the straw checkerboard decomposes 4–5 years after installation, suggesting that intensive management during the first few years after the application of sand fixing measures is important to sustain stabilized ground surfaces and restored vegetation.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107456"},"PeriodicalIF":3.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive windproof effects evaluation of low-coverage meadow paving layout forms based on numerical wind tunnel experiments","authors":"Zhijun Wang ,&nbsp;Kaihe Zhang","doi":"10.1016/j.ecoleng.2024.107464","DOIUrl":"10.1016/j.ecoleng.2024.107464","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The sustainability of the ecological system in Alpine regions is being increasingly threatened by grassland desertification under climate change conditions. In order to address this global issue, this study took the typical desertified grassland in the northeastern edge of the Tibetan Plateau, as a case, proposing a low-coverage meadow paving layout forms for mitigating wind and sand erosion. Six paving layout forms (“spacing strips” (SS-1, SS-1.5), “lattice-shaped” (LS-1, LS-2), checkerboard intervals“ (CI), “square intervals” (SI)) were designed and comprehensive analysis of their windproof effects were explored by numerical wind tunnel experiments. The patchy meadow is generalized as a porous medium and the porosity source terms were added to the RNG &lt;em&gt;k-ε&lt;/em&gt; turbulence model to simulate the disturbance of the meadow on the airflow characteristics. The improved mathematical model was verified by the field experiments of &lt;span&gt;&lt;span&gt;Hesp et al. (2019)&lt;/span&gt;&lt;/span&gt;. Following that, a series of numerical wind tunnel experiments were conducted on the 6 arrays, with the single meadow coverage of 40.00 %, at incoming wind speeds of 7 m/s (low), 11 m/s (medium) and 15 m/s (high) (wind speed is 2 m from the surface). In addition, this study uses flow field, windproof efficiency (E), downwind speed percentage (DSP), integrated cumulative distribution function of wind speeds below the threshold of 4.19 m/s in Maqu (&lt;em&gt;P&lt;/em&gt; &lt; 4.19 m/s) and economy to comprehensively evaluate the windproof effects based on the results of numerical wind tunnel experiments. Evaluation results based on individual index indicated that: (1) The meadow array significantly reduces the wind speed, and the meadow array pattern changes the airflow field around the meadow. (2) The E value in windproof areas for different meadow layouts ranking from largest to smallest is as follows: LS-1 &gt; SS-1 &gt; CI &gt; SS-1.5 &gt; LS-2 &gt; SI. (3) Within the windproof area, the DSP of various meadow arrays revealed significant distribution differences, with significant reduction occurring especially for SS-1, SS-1.5, and LS. (4) As for the value of &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;&lt;4.19 m/s&lt;/sub&gt;, the order from largest to smallest for the 6 layouts reveals a law of LS-1 &gt; SS-1 &gt; SS-1.5 &gt; CI &gt; LS-2 &gt; SI. (5) The paving decrement compared to the full pavement ranking from largest to smallest is SS-1.5 &gt; CI &gt; SS-1 &gt; SI &gt; LS-2 &gt; LS-1. Based on the comprehensive evaluation results, which consider ecological economic benefits, it can be concluded that SS-1 demonstrates superior effectiveness as a low-coverage wind and sand control mode for a single wind direction. On the other hand, LS is found to be more suitable for scenarios involving multiple wind directions or variable wind directions. The anticipated outcomes of this study are poised to offer a novel approach for managing wind and sand, as well as facilitating ecological restoration in the alpine deserti","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107464"},"PeriodicalIF":3.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Denitrifying bioreactor surface subsidence varies with age and cover","authors":"Laura E. Christianson ,&nbsp;Reid D. Christianson ,&nbsp;Christopher H. Hay ,&nbsp;Anthony Seeman ,&nbsp;Carolina Díaz-García ,&nbsp;Gary W. Feyereisen ,&nbsp;Lindsay Pease ,&nbsp;Jeppe Kjaersgaard ,&nbsp;Matthew J. Helmers ,&nbsp;Michelle Soupir","doi":"10.1016/j.ecoleng.2024.107461","DOIUrl":"10.1016/j.ecoleng.2024.107461","url":null,"abstract":"<div><div>Surface subsidence at denitrifying woodchip bioreactors treating subsurface drainage has been anecdotally noted but has not been consistently documented and is thus poorly understood. Subsidence is of concern due to safety and potential exacerbation of ponding within the bioreactor but could also indicate flow restrictions within the woodchip bed. This study used 3D light detection and ranging (LiDAR) surveying on handheld devices (iPhone 12 Pro, iPad Pro) to provide minimum estimates of surface subsidence at 17 full-size bioreactors across a range of ages (0.1 to 14 years). Bioreactors with woodchips extending to the surface subsided faster than bioreactors with soil covers with median subsidence rates over the entire surface of 7.3 and 1.0 cm/y, respectively. Maximum subsidence averaged 40 ± 14 cm across all sites and tended to occur near the inflow manifold where subsidence could disproportionately impact hydraulic performance. Although these findings are limited to the bioreactors in the present evaluation and other sites may show different trends, it may be that subsidence is not reducible to aerobicity alone. Subsidence is not necessarily, on its own, the best individual indicator of the end of design life. In practice, checking for a consistent reduction in the amount of outflow over time is the best way to assess the need for a bioreactor woodchip recharge. Nevertheless, in this study, subsidence at full-size bioreactors was successfully approximated using a hand-held LiDAR device, and use of this method at additional sites is suggested, especially following bioreactor construction.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107461"},"PeriodicalIF":3.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Replenishment characteristics of riparian debris baits to rivers and the response to flow","authors":"Zhuo Chen,&nbsp;Zhengyang Wang,&nbsp;Jingjie Feng,&nbsp;Ran Li,&nbsp;Jieshan Huang,&nbsp;Kefeng Li","doi":"10.1016/j.ecoleng.2024.107449","DOIUrl":"10.1016/j.ecoleng.2024.107449","url":null,"abstract":"<div><div>The riparian zone is a crucial interface between the aquatic and terrestrial components of river ecosystems. Organic matter deposited here can serve as an important food source for aquatic organisms, earning it the name of detritus bait. The construction of hydrological facilities has altered the flow rhythms of rivers, reducing the inundated area of banks and the frequency of flow velocity changes, which in turn negatively affects the ecological stability of the river. Given these reasons, it is crucial to understand the distribution characteristics of debris bait on riparian and the recharge pattern to rivers under flow impacts. The physical properties intrinsic to the debris in question were examined in order to ascertain their influence on the dynamics of debris transport through natural sampling methods. The distribution patterns of debris on natural river banks were investigated using density separation. A quantitative experimental model was designed based on the results of natural investigations to analyze the response characteristics of debris in-stream recharge to hydrodynamic structures at different flow velocities. The results indicate that the debris distribution is influenced by the background soil situation and flow effect. The soil layer immediately adjacent to the surface of the bank has a higher recharge effect. The main period for riparian debris recharge occurs at the onset of changes in flow rate. Furthermore, there is a positive correlation between the flow velocity and the quantity of debris entering the river. The findings of this study offer valuable insights into the replenishment of river bank debris bait under the current conditions, with implications for the ecological management of rivers undergoing hydropower development.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"211 ","pages":"Article 107449"},"PeriodicalIF":3.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}