Ecological Engineering最新文献_第3页

Investigating the compensatory effect of legume reseeding on soil organic carbon loss under tillage management in a saline-alkali grassland in the semi-arid region 研究半干旱地区盐碱地草地耕作管理下豆科植物复播对土壤有机碳流失的补偿效应

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-08 DOI: 10.1016/j.ecoleng.2024.107441

Yang Gao , Yuqi Zhang , Jian Liu , Yu An , Hongyuan Ma , Shouzheng Tong

Tillage and reseeding are recognized as effective near-natural restoration practices for degraded grasslands. Despite of ecological restoration efforts of these practices on degraded saline-alkali grasslands in the semi-arid Songnen Plain, the focus on soil functions, particularly carbon (C) accumulation, remains inadequate. This study implemented four restoration measures—tillage (T), tillage combined with Astragalus adsurgens reseeding (TR), no-tillage and reseeding (NR), and no-tillage (N)—on degraded saline-alkali grasslands in 2017. We investigated changes in plant community characteristics and species diversity, soil physical and chemical properties, and soil organic carbon (SOC) pool in 2019 (third-year post-restoration) and 2022 (sixth-year post-restoration). The results indicate that TR had the highest coverage, above-ground biomass (AGB), and below-ground biomass (BGB) in both surveys. From 2019 to 2022, NR exhibited the most pronounced increase in coverage, whereas AGB and BGB of TR achieved the largest increment. In terms of soil properties, the TR and T treatments decreased soil total nitrogen (SN) content and soil bulk density (SBD), and the TR and NR treatments decreased pH and EC. Although SOC content and storage (TSOC) values were lower in T and TR treatments in 2019, a compensation effect with highest C accumulation rate in TR was observed in 2022. Regression analysis showed significant positive correlations between TSOC and plant community height, coverage, AGB, species richness, and SN and soil phosphorus (SP) content. Structural equation models (SEMs) further indicated that tillage practices negatively impacted TSOC. In contrast, legume reseeding, through adjustments in plant density, positively impacted TSOC, with SWC playing a pivotal role. This study quantifies the impact of tillage combined with reseeding on SOC sequestration and provides critical scientific evidence for managing the natural-based restored grasslands in semi-arid regions.

耕作和重播被认为是退化草地近乎自然的有效恢复方法。尽管这些方法在半干旱的松嫩平原退化的盐碱草地上开展了生态恢复工作，但对土壤功能，尤其是碳（C）积累的关注仍然不足。本研究于2017年在退化的盐碱草地上实施了四种恢复措施--翻耕（T）、翻耕结合黄芪重播（TR）、免耕和重播（NR）以及免耕（N）。我们调查了 2019 年（恢复后第三年）和 2022 年（恢复后第六年）植物群落特征和物种多样性、土壤理化性质以及土壤有机碳库的变化。结果表明，在两次调查中，TR 的覆盖率、地上生物量（AGB）和地下生物量（BGB）最高。从 2019 年到 2022 年，NR 的覆盖率增长最为明显，而 TR 的 AGB 和 BGB 增长幅度最大。在土壤性质方面，TR 和 T 处理降低了土壤全氮（SN）含量和土壤容重（SBD），TR 和 NR 处理降低了 pH 值和 EC 值。虽然2019年T和TR处理的SOC含量和储存量（TSOC）值较低，但2022年观察到了补偿效应，TR的C积累率最高。回归分析表明，TSOC 与植物群落高度、覆盖率、AGB、物种丰富度、SN 和土壤磷（SP）含量之间存在明显的正相关关系。结构方程模型（SEM）进一步表明，耕作方法对 TSOC 有负面影响。与此相反，通过调整植物密度进行的豆科植物重播则对 TSOC 产生了积极影响，其中 SWC 起到了关键作用。这项研究量化了耕作结合补播对 SOC 固碳的影响，为半干旱地区以自然为基础的恢复性草地的管理提供了重要的科学依据。

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引用次数: 0

Nature-based solutions for coastal dune restoration: The case study of AlgoBox in South Brittany, France 基于自然的海岸沙丘恢复解决方案：法国南布列塔尼 AlgoBox 案例研究

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-05 DOI: 10.1016/j.ecoleng.2024.107440

Mouncef Sedrati, Laura Dalour, Glen Bulot, Noé Metge

Preventing marine submersion and coastal erosion is a major challenge in the most coastal areas because of increasing vulnerability of human issues. Awareness of the decline in biodiversity and degradation of coastal ecosystems has led to emergence of nature-based solutions, more sustainable and resilient than traditional coastal engineering. On sandy coasts, the “AlgoBox” system is a sustainable ecological solution for preserving the coastline and restoring dunes, first natural barriers against waves. This tool combines the use of sand trapping fence cases with filling by algae wrack. The addition of algae to the box helps to dampen waves and provides nutrients for plants colonization, responsible for fixing sediments. In this study, we examined the “AlgoBox” effectiveness on the dune-edge erosion belt and dune regeneration on two eroded beaches in Morbihan, France. Results of regular topographic dune-beach profile and vegetation colonization processes surveys indicate that these low-cost nature-based solutions have successfully increased sediment levels and regeneration dunes. Consequently, AlgoBox have had the positive effects of (1) stabilising the coastline and preventing it from retreating during storms (2) forming an embryonic dune and (3) enriching coastal vegetation.

由于人类面临的问题日益脆弱，防止海水淹没和海岸侵蚀是大多数沿海地区面临的一大挑战。由于意识到生物多样性的减少和沿海生态系统的退化，以自然为基础的解决方案应运而生，它们比传统的海岸工程更具可持续性和复原力。在沙质海岸，"AlgoBox "系统是一种保护海岸线和恢复沙丘的可持续生态解决方案，是抵御海浪的第一道天然屏障。这种工具结合使用了捕沙栅栏箱和藻类填充物。在栅栏箱中加入藻类有助于减弱海浪，并为植物定植提供养分，从而起到固定沉积物的作用。在这项研究中，我们考察了 "AlgoBox "对法国莫尔比昂省两个受侵蚀海滩的沙丘边缘侵蚀带和沙丘再生的效果。对沙丘-海滩地形剖面和植被生长过程的定期调查结果表明，这些基于自然的低成本解决方案成功地增加了沉积物含量和沙丘再生。因此，AlgoBox 具有以下积极作用：(1) 稳定海岸线，防止风暴期间海岸线后退；(2) 形成沙丘雏形；(3) 丰富沿海植被。

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引用次数: 0

Effects of different restoration years on soil carbon sequestration and water retention capacity in bamboo forest: A case study in Southwest China Karst 不同恢复年限对竹林土壤固碳和保水能力的影响中国西南喀斯特案例研究

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-05 DOI: 10.1016/j.ecoleng.2024.107434

Liheng Pang , Chaojie Tian , Quanzhi Yuan , Wei Deng

The Grain for Green Program (GGP) is an ecological protection plan launched by China. In this context, much cultivated land in Southwest China Karst has been converted into bamboo forest to balance both ecological and economic benefits. This study selected typical areas in southern Sichuan Province and used natural bamboo forests (CK) as controls to analyze the changes in soil carbon sequestration and water retention capacity of bamboo forests with different restoration periods. The results showed that there was no significant change in soil mechanical composition during forest restoration. The soil bulk density (BD) showed a decreasing trend overall with the restoration period. The total porosity (P_t) and capillary porosity (P_c) showed a trend of first decreasing and then increasing with the increase of restoration years, while no obvious change pattern was found in non-capillary porosity (P_o). The variation characteristics of water retention capacity are similar to porosity, and returning farmland for 5 years can achieve good water retention performance, even higher than CK. The total organic carbon (TOC) and labile organic carbon (LOC) in the soil of bamboo forests after 20 years of returning farmland were significantly higher than those in 5 and 10 years of bamboo forests, and their organic carbon content was close to that of CK. It is worth noting that the soil organic carbon activity reached its optimal state after 10 years of returning farmland. To sum up, the implementation of the project of returning farmland to bamboo can effectively improve the soil carbon sequestration and water retention capacity. The research results provide a scientific basis for the optimization of the measures of the GGP, and help to promote the sustainable development in Southwest China Karst.

绿色粮食计划（GGP）是中国推出的一项生态保护计划。在此背景下，中国西南喀斯特地区的许多耕地被改造成竹林，以兼顾生态和经济效益。本研究选取四川省南部典型地区，以天然竹林（CK）为对照，分析不同恢复期竹林土壤固碳量和保水能力的变化。结果表明，森林恢复期土壤力学组成无明显变化。土壤容重（BD）随着恢复期的延长呈总体下降趋势。总孔隙度（Pt）和毛细管孔隙度（Pc）随着恢复年限的增加呈先减后增的趋势，而非毛细管孔隙度（Po）则无明显变化规律。保水能力的变化特征与孔隙度相似，退耕 5 年可获得良好的保水性能，甚至高于 CK。退耕 20 年后竹林土壤的总有机碳（TOC）和可变有机碳（LOC）明显高于退耕 5 年和 10 年的竹林土壤，其有机碳含量接近 CK。值得注意的是，退耕 10 年后土壤有机碳活性达到最佳状态。综上所述，实施退耕还竹工程可有效提高土壤固碳和保水能力。研究成果为优化全球地质公园措施提供了科学依据，有助于促进中国西南喀斯特的可持续发展。

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引用次数: 0

Ecological impact of single and semi-contiguous artificial rockpool installations on the assemblages and species richness of vertical seawalls 单个和半连续人工岩池装置对垂直海堤生物群落和物种丰富度的生态影响

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-05 DOI: 10.1016/j.ecoleng.2024.107432

Roger J.H. Herbert , Jessica R. Bone , Alice E. Hall , Stephen J. Hawkins , Rick Stafford

Local improvements to species diversity through the creation of microhabitat features have been adopted as an approach for “Greening Grey Infrastructure” (GGI) in urbanised coastal ecosystems. To confidently implement these enhancements asset managers and engineers need quantitative information on the value of different feature types, densities, and configurations. We compared the biodiversity benefits of horizontal arrays of semi-contiguous 3 and 5 artificial rockpools with single isolated rockpool units and unenhanced sections of seawall. Rockpools were fixed within seawall sections 2 m wide at Mean High Water Neap Tide Level. At low tide, biota was monitored inside the pools, on the side of the pool units, the sea wall adjacent to the rockpools and in sea wall zones above and below the pools. After 36 months, species richness (all zones combined) of seawall sections with five rockpools was up to four times greater than controls and included protected and non-indigenous species. Increased richness was attributable to a higher density of rockpools and not rockpool contiguity. Grazers attracted to areas between and above rockpools modified assemblages that may limit persistence of algae. At one site, recovery of brown algae following disturbance during rockpool installation remained incomplete after 36 months. Benefits of arrays of semi-contiguous pools remain unclear, and deployment of individual rockpools (or similar enhancements) over a larger habitat area, that experience a wider range of conditions, may be at least as valuable. Quantifying species richness per unit size/ area of structure should assist managers and the development of metrics designed to measure ecological benefits in GGI.

在城市化的沿岸生态系统中，通过创造微生境特征来改善当地的物种多样性，已被作为 "绿化灰色基础设施"（GGI）的一种方法。为了自信地实施这些改进措施，资产管理者和工程师需要获得有关不同特征类型、密度和配置价值的定量信息。我们比较了由 3 个和 5 个半连续人工岩池组成的水平阵列与单个孤立的岩池单元和未增强的海堤段的生物多样性效益。岩池被固定在 2 米宽的海堤断面上，处于平均涨潮水位。退潮时，对水池内部、水池单元侧面、与岩池相邻的海堤以及水池上方和下方的海堤区域进行生物群落监测。36 个月后，有五个岩池的海堤段的物种丰富度（所有区域总和）比对照组高出四倍，其中包括受保护物种和非本地物种。物种丰富度提高的原因是岩池密度增加，而不是岩池的毗连性。吸引到岩池之间和岩池上方区域的食草动物改变了藻类的组合，这可能会限制藻类的持续生长。在一个地点，褐藻在岩池安装过程中受到干扰，36 个月后仍未完全恢复。半连续水池阵列的益处尚不明确，而在更大的栖息地范围内部署单个岩池（或类似的强化设施），经历更广泛的条件变化，可能至少同样有价值。量化每单位大小/面积结构的物种丰富度将有助于管理者和制定旨在衡量 GGI 生态效益的指标。

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引用次数: 0

The use of gabions as an eco-engineering approach to enhance estuarine fish habitats in urbanised waterways 使用石笼作为生态工程方法，改善城市化水道中的河口鱼类生境

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-02 DOI: 10.1016/j.ecoleng.2024.107431

J.L. Seath , L.B. Firth , P.W. Froneman , L. Claassens

Anthropogenic activities are often concentrated around coastal ecosystems. Harbours and marinas comprising artificial structures with steeper orientations and reduced topographic complexities than natural ecosystems contribute to habitat alteration and biodiversity loss. Ecological engineering aims to mitigate these impacts by integrating ecological principles into coastal development to enhance habitat potential and improve biodiversity. This study investigated the potential of gabions (rock-filled wire mesh baskets) to enhance fish abundance and biodiversity by comparing these structures to conventional seawalls in an urbanised marina in Knysna, South Africa. Remote underwater video systems were used to determine fish diversity, abundance and composition over a 12-month period from August 2020 to August 2021. Overall, a significantly greater abundance and diversity of fish were associated with gabions compared to seawalls. Importantly, the gabions supported an endangered species, the Knysna seahorse (Hippocampus capensis), and two near threatened species recorded only on the gabions. This study highlights the efficacy of using structurally complex gabions as a viable ecoengineering alternative to less complex seawalls to enhance fish habitat.

人类活动往往集中在沿海生态系统周围。与自然生态系统相比，港湾和游艇停泊区的人工结构方向更陡，地形复杂程度更低，这导致了生境的改变和生物多样性的丧失。生态工程旨在通过将生态原则融入海岸开发来减轻这些影响，从而提高栖息地的潜力并改善生物多样性。本研究通过在南非克尼斯纳的一个城市化码头将石笼网（填充岩石的金属丝网筐）与传统海堤进行比较，研究了石笼网提高鱼类丰度和生物多样性的潜力。在 2020 年 8 月至 2021 年 8 月的 12 个月期间，使用远程水下视频系统确定鱼类的多样性、丰度和组成。总体而言，与海堤相比，石笼的鱼类丰度和多样性明显更高。重要的是，石笼支持一种濒危物种--克尼斯纳海马（Hippocampus capensis）和两种仅在石笼上记录到的近危物种。这项研究强调了使用结构复杂的石笼作为一种可行的生态工程替代品的功效，以改善鱼类的栖息地。

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引用次数: 0

A study on classification of vegetation zones based on flow regimes in Riparian wetlands 基于河岸湿地流态的植被带分类研究

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-11-01 DOI: 10.1016/j.ecoleng.2024.107429

Hoyong Lee , Soojun Kim , Jaewon Kwak , Junhyeong Lee , Hung Soo Kim

Wetlands play an important role in cycling water resources, organic matter, water purification, and ecosystem conservation. Understanding flow regimes is essential for effective wetland management because it significantly influences wetland succession and circulation. This study aims to develop a methodology for quantifying flow regimes of the Jangdan Wetland (Imjin River) and the Binae Wetland (Namhan River). The study utilized water level duration curve (LDC) based on historical water level data from 2008 to 2023 for the Binae Wetland and from 2003 to 2023 for the Jangdan Wetland to analyze hydrological flow regimes. Flow regime diagrams describing the inundation characteristics over time, were then constructed using the LDC and the digital elevation models (DEM) of the wetlands. To understand the relationship between vegetation communities and hydrologic regime in the wetland, this study classified nine vegetation zones based on the tolerance of associated plant species to inundation (in weeks or months) reported for plant species in previous studies. The study revealed that the Jangdan Wetland were dry primarily on most days but experienced complete inundation during flooding events. In contrast, the Binae Wetlands were found to be frequently inundated, with approximately 40 % of the area experiencing regular flooding, while 20 % of the higher elevation areas were only inundated once every few years.

湿地在水资源循环、有机物、水净化和生态系统保护方面发挥着重要作用。了解流态对有效管理湿地至关重要，因为流态对湿地演替和循环有着重要影响。本研究旨在开发一种量化长滩湿地（临津江）和滨内湿地（南汉江）水流状态的方法。研究利用水位持续时间曲线 (LDC) 分析水文流态，水位持续时间曲线基于 2008 年至 2023 年的滨内湿地历史水位数据和 2003 年至 2023 年的长滩湿地历史水位数据。然后，利用 LDC 和湿地的数字高程模型（DEM）构建了水流状态图，描述了不同时期的淹没特征。为了解湿地植被群落与水文流态之间的关系，本研究根据以往研究中报告的相关植物物种对淹没的耐受性（以周或月为单位）划分了九个植被区。研究显示，獐子岛湿地在大多数日子里主要处于干燥状态，但在洪水泛滥时会完全被淹没。相比之下，Binae 湿地经常被淹没，约 40% 的区域经常被淹没，而 20% 的高海拔区域每隔几年才被淹没一次。

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引用次数: 0

Corrigendum to “Riparian vegetation surveys for roughness estimation” [Ecological Engineering volume 209 (December 2024) 107414] 用于粗糙度估算的河岸植被调查"[《生态工程》第 209 卷（2024 年 12 月）107414] 更正

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-10-22 DOI: 10.1016/j.ecoleng.2024.107428

A. Signorile, R. Saracino, A. Dani, M. Rillo Migliorini Giovannini, F. Preti

引用次数: 0

Hydromechanical behaviour of a slope reinforced by grass roots under rainfall conditions 降雨条件下草根加固斜坡的水力学特性

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-10-16 DOI: 10.1016/j.ecoleng.2024.107427

Gayuh Aji Prasetyaningtiyas , Viroon Kamchoom , Anthony Kwan Leung , Suched Likitlersuang

Soil bioengineering using vegetation has been considered an environmentally friendly solution to improve slope stability. Although several studies have demonstrated the contribution of vegetation to slope stability, a gap in understanding the mechanisms of grass root–soil interactions under rainfall conditions remains. This study investigates the effects of the roots of vetiver grass (Chrysopogon zizanioides) on the hydromechanical behaviour of an unsaturated soil slope using the centrifuge modelling technique. The changes in pore water pressure and slope deformation were monitored during the test. The monitored data were subsequently back-analysed and interpreted using seepage–stability analyses. In addition, this study focused on evaluating the effect of roots on slope stability, considering safety and pore water pressure during rainfall. Results revealed that the vetiver roots remarkably affected the initial suction of the slope by increasing the soil's air-entry value. The increased suction and the additional cohesion provided by the roots enhanced slope stability under rainfall conditions.

利用植被进行土壤生物工程一直被认为是改善边坡稳定性的环保解决方案。尽管多项研究已证明植被对边坡稳定性的贡献，但在了解降雨条件下草根与土壤的相互作用机制方面仍存在差距。本研究利用离心机建模技术研究了香根草（Chrysopogon zizanioides）根系对非饱和土壤边坡水力学行为的影响。试验期间监测了孔隙水压力和边坡变形的变化。随后，利用渗流稳定性分析对监测数据进行了反分析和解释。此外，这项研究还重点评估了根系对斜坡稳定性的影响，同时考虑了降雨期间的安全性和孔隙水压力。结果显示，香根草根系通过增加土壤的空气进入值，显著影响了斜坡的初始吸力。根系增加的吸力和额外的内聚力增强了降雨条件下斜坡的稳定性。

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引用次数: 0

Entrance geometries of closed-conduit fishways to attract juvenile fishes 吸引幼鱼的闭合导管鱼道入口几何形状

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-10-15 DOI: 10.1016/j.ecoleng.2024.107421

Maryam Farzadkhoo , Darren Jadraque , Richard T. Kingsford , Iain M. Suthers , Stefan Felder

Fishway effectiveness relies on successful fish attraction and entry, yet limited research has explored the impact of entrance design on fish attraction. This study addresses this knowledge gap by evaluating different entrance geometries, water velocity, and related characteristics of flow for attracting Australian native fishes into closed conduit fishways. Novel laboratory experiments combined detailed hydrodynamic measurements of the velocity fields with live fish experiments, using silver perch (Bidyanus bidyanus) and Australian bass (Percalates novemaculeata). Four entry geometries comprising a circular entrance (FO), a slotted entrance (slot), a semi-circular entrance (SC), and a submerged quarter circle (QC) were tested. Three attraction velocity configurations of (i) V_a = 0 m/s, (ii) constant velocity (V_a = 0.15 m/s at the entrance for each of the entrance geometries); and (iii) constant momentum flux (0.12 N for each entrance geometry) was examined at a water depth of d = 0.18 m. There were distinct differences in the attraction flow patterns between entrance geometries. The strongest turbulent kinetic energy (TKE) values were found near the channel bed at Z = 0.1 d, with TKE significantly reduced by up to 60 % in the upper layer (Z = 0.7 d). The swimming trajectories for silver perch and Australian bass varied with different entrance geometries. While in the SC entrance, most silver perch used the jet sidewall, for the QC entrance, silver perch displayed a preference for swimming along the middle of the channel and along the non-jet sidewall, suggesting that the flow submergence for the QC entrance may have affected fish response. The presence of silver perch and Australian bass in the entrance tube clearly suggests that they can be attracted to diverse geometries without exhibiting a distinct preference for particular combinations of entrance geometries and velocities. TKE values <160 cm²/s² were recommended for attracting juvenile silver perch and Australian bass with longer residence time in the entrance tube.

鱼道的有效性取决于能否成功地吸引鱼类进入，但有关入口设计对鱼类吸引力影响的研究却十分有限。本研究通过评估不同的入口几何形状、水流速度以及相关的水流特征，以吸引澳大利亚本地鱼类进入封闭式导流鱼道，填补了这一知识空白。新颖的实验室实验将流速场的详细水动力测量与活鱼实验相结合，使用银鲈（Bidyanus bidyanus）和澳大利亚鲈鱼（Percalates novemaculeata）进行实验。测试了四种入口几何结构，包括圆形入口（FO）、槽形入口（slot）、半圆形入口（SC）和水下四分之一圆（QC）。在水深 d = 0.18 米处测试了三种吸引速度配置：(i) Va = 0 米/秒；(ii) 恒速（每种入口几何形状的入口处均为 Va = 0.15 米/秒）；(iii) 恒定动量通量（每种入口几何形状的入口处均为 0.12 牛顿）。在 Z = 0.1 d 的河床附近发现了最强的湍流动能（TKE）值，而在上层（Z = 0.7 d），TKE 显著降低了 60%。银鲈和澳大利亚鲈鱼的游动轨迹随不同的入口几何形状而变化。在 SC 入口处，大多数鲈鱼使用喷射侧壁，而在 QC 入口处，鲈鱼则偏好沿水道中部和非喷射侧壁游动，这表明 QC 入口处的水流淹没可能影响了鱼类的反应。银鲈和澳大利亚鲈鱼在入口管中的出现清楚地表明，它们会被不同的几何形状所吸引，而不会对特定的入口几何形状和流速组合表现出明显的偏好。建议 TKE 值为 160 cm2/s2，以吸引在入口管中停留时间较长的银鲈和澳大利亚鲈鱼幼鱼。

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引用次数: 0

Assessing the effect of local characteristics on environmental impacts of Constructed Wetlands by regionalized life cycle assessment 通过区域化生命周期评估，评估地方特征对人工湿地环境影响的影响

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2024-10-15 DOI: 10.1016/j.ecoleng.2024.107423

Lineker Max Goulart Coelho

The goal of this paper is to assess the effect of regional characteristics on the environmental sustainability of Horizontal Subsurface Flow Constructed Wetlands using comparative regionalized Life Cycle Assessment. Regionalizaton was implemented in terms of input and outputs values, as well as considering impact assessment methods that consider regional aspects to estimate the environmental impact results. A case study for a Horizontal Subsurface Flow Constructed Wetlands treating municipal wastewater was assumed, and the system was assessed considering the installation of the constructed wetland in 5 different countries with distinct characteristics in terms of technologies, geographic location, climate conditions and electricity mix. The comparative life cycle assessment results showed important variations among the countries, which highlights the importance of taking into account a regionalized approach in order to assess the local specificities properly. An average relative standard deviation of 59 % for all regionalized impact categories was identified when comparing the LCA for the case study for different countries. So, the study successfully showed the importance of regionalization in constructed wetlands assignments and provided relevant recommendations for system enhancements in order to reduce environmental impact according to regional characteristics.

本文的目的是利用区域化生命周期比较评估方法，评估区域特征对水平地下流人工湿地环境可持续性的影响。在输入和输出值方面实施了区域化，并考虑了影响评估方法，这些方法考虑了区域因素，以估算环境影响结果。假定对处理城市污水的水平地表下流动人工湿地进行案例研究，并考虑在 5 个不同国家安装人工湿地的情况，对该系统进行评估，这些国家在技术、地理位置、气候条件和电力组合方面具有不同的特点。生命周期比较评估结果表明，各国之间存在很大差异，这突出表明了采用区域化方法对当地具体情况进行适当评估的重要性。在比较不同国家案例研究的生命周期评估时，发现所有区域化影响类别的平均相对标准偏差为 59%。因此，该研究成功地表明了区域化在湿地建设任务中的重要性，并提供了相关的系统改进建议，以根据区域特点减少对环境的影响。

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引用次数: 0