Ecological Engineering最新文献_第6页

Wildflower strips in the agroecosystem for pollinator biodiversity restoration: Which plant species are capable of self-seeding?

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2024.107486

Stefano Benvenuti

The success of wildflower strips for conserving pollinator biodiversity is often hampered by their poor sustainability, attributable to the short duration lifespan of the sown species. This three-year experiment aimed to: i) select the plant species that survived the agronomic disturbance practices implemented and ii) verify which crop management approach favoured their sustainability. Six experimental strips along the longest edges of the adjacent wheat crop were sown during the fall of 2019. The annual wildflower species that showed the best performances in emergence dynamics and seedling growth were some wildflowers derived from segetal weeds that are presently rare in conventional agroecosystems. The species Centaurea cyanus, Agrostemma githago, Glebionis coronaria among others attained the phenological stage of flowering most consistently, and also had the lowest mortality rates in the plant community studied. Despite preparing a stale seedbed, weeds were the most significant obstacle to the sustainability of the strips over time. Soil harrowing at the end of the summer lifecycle led to better plant survival performances (10.9 %) compared to senescent plant shredding (4.8 %). Harrowing also resulted in a greater wildflower survival the following year, as well as a higher number of pollinator visits. Honeybee visits were decreased by wildflower strip thinning over time, probably due to their typical constancy in the daily foraging choice for the same abundant species. A similar reduction was observed by the Lepidoptera. In contrast, generalist pollinators (i.e. Syrphidae, Bombyliidae, solitary bees and Coleoptera) were the least demanding pollinators in terms of the plant biodiversity of the sustainable wildflower strip. Harrowing led to a greater biodiversity of both wildflowers and pollinators (Shannon index, H′), and a lower weed dominance (Simpson index, D), compared to shredding. In summary, some segetal wildflowers could be incorporated into sustainable wildflower strips as they are self-seeding.

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引用次数: 0

Soil and Water Bioengineering (SWBE) in Africa: First experience and lessons-learned in Burundi

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2024.107510

Federico Preti , Cesare Crocetti , Severin Nijimbere , Jean Marie Vianney Nsabiyumva , Cyrille Hicintuka , Giulio Castelli

Burundi's landscapes are threatened by land degradation and erosion, like many other countries in Central Africa. Environmentally, socially, and economically sustainable technologies should be investigated to address the issue, and Soil and Water Bioengineering (SWBE) represents a suitable solution. This study describes the first-ever application of SWBE in the country, realized within the World Bank's Burundi Landscape Restoration and Resilience Project (PRRPB). An experimental installation of SWBE was implemented in the hilly Isare municipality (Colline) using the training sites method. The overall feasibility of the installation was evaluated through an analysis of the growth of the plants used – a botanic analysis - a transferability analysis and a cost analysis. The botanic monitoring highlighted that a relatively good survival rate was achieved at the site of the experimentation. The transferability analysis results showed minor constraints (mainly know-how on SWBE techniques and the availability of materials, qualified labor, and equipment and mechanical instruments) but no major ones. On the other hand, the presence of high botanical knowledge, jointly with the local biodiversity, and the economic advantages of SWBE, represent decisive factors that can guarantee successful transferability. In terms of costs of a sample SWBE technology (double crib wall), our results show a reduction of 42 % and 72 % in terms of Purchasing Power Parity $ (PPP$) for mechanical and manual excavation respectively, with reference to the cost of the same work in an EU country (Italy). In addition to this, such technology is much cheaper than a gabion wall (−25 % if the crib wall is installed with mechanical excavation; −105 % if with manual excavation) and a concrete wall (−326 % with mechanical excavation; −598 % with manual excavation). The results of this paper show that SWBE is potentially transferable to Burundi, allowing the solution of some of the land degradation problems in the country, specifically targeting small- to medium-sized landslides, and also to countries with similar landscapes and social settings. More experimental installations and more research on the barriers should be realized. The proposed approach can be replicated in any central African country endangered by erosion and landslides.

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引用次数: 0

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2025.107541

Changqiang Guo , Qijiang Du , Zizun Wei , Qing Zhu

Free water surface flow constructed wetlands (FWS CWs) are widely utilized for nonpoint source pollution control and are greatly affected by seasonal variation. One of the key challenges is optimizing wetland design to ensure consistent performance throughout the year. To date, the impact of hydraulic performance on pollutant purification remains debated, and studies examining the correlation between their seasonal fluctuations are limited. This study conducted orthogonal experiments involving three categories of wetland parameters: geometric, hydraulic, and water quality parameters, to analyze the seasonal variability of the two wetland performance metrics. The results indicated that hydraulic performance presented high consistency across seasons and was more influenced by geometric and hydraulic parameters. Generally, FWS CWs with lower water depths and larger aspect ratios exhibited superior hydraulic performance. The purification effect for nitrogen showed obvious seasonal fluctuations, whereas phosphorus purification remained relatively stable. The concentration reduction efficiencies (CREs) of total nitrogen (TN) in Jun 2023, Sep 2023, and Dec 2023 were 16 % (±10 %), 19 % (±8 %), and 1 % (±9 %), respectively; for total phosphorus (TP), the CREs were 27 % (±11 %), 28 % (±16 %), and 16 % (±11 %). Both TN and TP CREs exhibited strong negative correlations with flow rate and influent nitrogen concentration, while load removal rates demonstrated strong negative correlations with water depth. There were few significant correlations between hydraulic performance and purification effect. It is recommended to use a parameter combination of a small aspect ratio, low water depth, and low flow rate to achieve stable purification effects year-round.

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引用次数: 0

Mangrove recovery by habitat restoration using nature-based solutions

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2025.107520

Johan C. Winterwerp , Annalise Bayney , Sabine Engel , Luandra Jack , Kene Moseley , Bob Smits

This paper presents five examples of Nature-based Solutions (NbS) to restore degraded mangroves and mangrove-mud coasts. These examples are meant to provide inspiration for the restoration of other such coasts. The designs are based on a qualitative/conceptual understanding of the bio-physical system. This is obtained mainly from an in-depth analysis of historic satellite images and historic maps, while quantitative data are scarce, as is generally the case in these environments.

One example reflects the restoration of circulation and flushing in a small bay in the SW of the Caribbean Island Bonaire. Drainage channels were overgrown, and the forest was attacked from the back by hyper-salinity and the inflow of silts. The first, more urgent problem has now been addressed by re-opening a few channels, restoring circulation and flushing, and mangrove recruitment restarted.

The other four examples are from Guyana and Suriname. Though all sites are part of the greater Guiana coastal zone and driven by the same physical processes, local conditions are so different that different NbS-solutions were required to catch and arrest sufficient sediments to recreate mangrove habitat. The examples show why and how one solution works at one location, while elsewhere another approach was successful.

This paper can be regarded as a supplement to the Engineering with Nature Atlas issued by ERDC in 2024, which focuses on temperate climate environments though.

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引用次数: 0

Identification of surface mining and assessment of ecological restoration effects using GEE and Sentinel-2 image data - A case study on Yangtze River watershed, China

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2025.107525

Yue Zang , Kechao Wang , Suchen Xu , Wu Xiao , Tong Tong , Hao Sun , Chong Li

Mineral resource development is essential for economic growth; however, its significant negative impacts on land, ecology, and the environment cannot be overlooked. This study aims to identify and assess the restoration status and ecological quality of large-scale surface mining areas, especially in the absence of specific mining location information. We propose a systematic workflow that utilizes open-source remote sensing data. The process includes: (1) extracting surface mining areas using masking, morphological operations, and visual interpretation techniques; (2) constructing time-series of Bare Surface Percentage (BSP) for each mining area on the Google Earth Engine platform to distinguish between abandoned and active mines and examine their restoration rates; (3) creating the Remote sensing Ecological indicator for Mining areas (REM) to quantify the ecological quality and analyze its temporal changes. A total of 1183 mine sites were identified in the study area, of which 381 abandoned mines showed a significant decreasing trend in BSP from 2016 to 2021, with a median decline from 98 % in 2016 to 81 % in 2022, indicating improved vegetation recovery during this period. Additionally, the REM of abandoned mines generally exhibited a stable upward trend from 2016 to 2022. This study provides a systematic solution for identifying surface mining areas and monitoring the restoration scope and ecological quality on a broader scale. The methodology is extendable to other regions and can support further ecological restoration decision-making.

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引用次数: 0

Impact of various flood conditions on the CO2 ecosystem exchange as a component of floodplain grassland restoration

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2024.107489

A. Lindenberger , H.P. Rauch , K. Kasak , M. Stelzhammer , M. von der Thannen

Beyond flood protection to prevent severe damage, the restored floodplain grassland in Austria provides ecosystem services in terms of carbon balance. Net ecosystem exchange (NEE), gross primary productivity (GPP), and ecosystem respiration (R_eco) were quantified by the eddy covariance (EC) method before, during and after a severe flooding event. Our results show that the carbon balance is heavily influenced by water level in the study site. The diurnal variations influenced by various degree from the flood are analysed, showing the average daily GPP of the floodplain grassland in Marchegg dropping from 1.048 g C m⁻² day⁻¹ before the flood, down to 0.470 g C m⁻² day⁻¹ during the flood. The study demonstrates that the restored floodplain grassland in Marchegg functions as a robust CO2 sink with a cumulative NEE of 38.8 g carbon per m2 over the three-month study period, despite temporary disruptions caused by flooding events. The findings emphasise the considerable potential of floodplain grassland restoration for carbon storage and climate change mitigation, with the new data from the EC station offering valuable insights for future restoration projects. Finally, this supports the adoption of the new EU Nature Restoration Law and the need for restoring wetlands, floodplains and rivers to secure water availability and biodiversity in these unique ecosystems. NBS and more specifically as Soil and Water Bioengineering (SWBE) are methods with ecological advantages and a huge potential for sustainable recreation of near-natural ecosystems. It is of crucial importance to prove these beneficial effects, and to quantify them transparently in terms of quality assurance and use of resources in a sustainable and eco-friendly way.

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引用次数: 0

The impact of restoration of Lithuanian peatlands on the economic value of certain ecosystem services

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2024.107475

Gintarė Sujetovienė, Giedrius Dabašinskas

The purpose of the study is to assess spatial and temporal changes in the economic values of ecosystem services provided by Lithuanian peatlands and to assess the benefits of restoring drained peatlands in comparison to the costs. Lithuania has lost about 75 % of its peatlands, most of which are drained fens (74 %), and most of which remain intact were raised peatlands (65 %). Forestry and agriculture were the main drivers of peatland loss. The examined ecosystem services provided by undrained peatlands, compared to drained ones, were mainly related to climate and water flow regulation, waste management, biodiversity, and recreation. Based on this selection of ecosystem services (ES), the value of intact peat ecosystem services is $1336 million per year. Undrained peatlands, occupying less than half the area of drained peatlands, provide twice as many benefits in terms of ES as drained ecosystems. If these drained peatlands were restored by 2050, they would account for $4006 million per year. A cost-benefit analysis has shown that the benefits outweigh the costs, making restoration efforts economically justifiable. More effective management measures could achieve a balance between the use of these ecosystems and the benefits they provide to human well-being.

{"title":"The impact of restoration of Lithuanian peatlands on the economic value of certain ecosystem services","authors":"Gintarė Sujetovienė, Giedrius Dabašinskas","doi":"10.1016/j.ecoleng.2024.107475","DOIUrl":"10.1016/j.ecoleng.2024.107475","url":null,"abstract":"<div><div>The purpose of the study is to assess spatial and temporal changes in the economic values of ecosystem services provided by Lithuanian peatlands and to assess the benefits of restoring drained peatlands in comparison to the costs. Lithuania has lost about 75 % of its peatlands, most of which are drained fens (74 %), and most of which remain intact were raised peatlands (65 %). Forestry and agriculture were the main drivers of peatland loss. The examined ecosystem services provided by undrained peatlands, compared to drained ones, were mainly related to climate and water flow regulation, waste management, biodiversity, and recreation. Based on this selection of ecosystem services (ES), the value of intact peat ecosystem services is $1336 million per year. Undrained peatlands, occupying less than half the area of drained peatlands, provide twice as many benefits in terms of ES as drained ecosystems. If these drained peatlands were restored by 2050, they would account for $4006 million per year. A cost-benefit analysis has shown that the benefits outweigh the costs, making restoration efforts economically justifiable. More effective management measures could achieve a balance between the use of these ecosystems and the benefits they provide to human well-being.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"212 ","pages":"Article 107475"},"PeriodicalIF":3.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165117","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}

引用次数: 0

Reassessing the ecological effectiveness of ecological restoration programs: Evidence from a quasi-natural experiment in China

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2024.107506

Yuanjie Deng , Xiaohan Yan , Mengyang Hou , Shunbo Yao

Globally, ecological restoration programs (ERPs) have emerged as vital tools for mitigating ecosystem degradation and preserving ecosystem services. Accurately assessing their effectiveness is essential to determining the success of these initiatives. However, the limitations inherent in traditional evaluation methods introduce uncertainty into these assessments. This study aims to reassess the ecological effectiveness of such programs through a counterfactual approach using quasi-natural experimental methods, thereby ensuring more accurate results and exploring potential impact pathways. We constructed a counterfactual scenario and employed a Difference-in-Differences (DID) model to evaluate the ecological benefits and mechanisms of China's National Key Ecological Functional Areas (NKEFAs). Additionally, we utilized a series of robustness tests for our findings. The results indicate: (1) NKEFAs have successfully restored ecological environments and produced positive ecological effects, although variations exist across different ecological function types and geographical regions. (2) Our analysis of transmission mechanisms suggests that optimization of national land use, upgrading of industrial structures, and labor force migration are critical pathways through which NKEFAs achieve ecological effectiveness. (3) Extended analysis reveals that NKEFAs not only have ecological spillover effects but also contribute to economic growth. Given that most global ERPs can implement counterfactual scenarios, the methodology used here offers a general framework that supports the achievement of the UN Sustainable Development Goals.

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引用次数: 0

Evaluation of the impact of ecological poplar retreat on the net primary productivity of Lake Wetland

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2025.107528

Xueke Tian , Yu Huang , Wenmin Hu , Guo Li , Can Li , Ruihan Yang , Chen Fu , Weiqun Lei

The Poplar Ecological Retreat Project (PERP) serves as a crucial ecological restoration measure for international wetland conservation. Assessing the impact of PERP on the Net Primary Productivity (NPP) of wetlands is essential in elucidating the mechanisms behind anthropogenic environmental effects and evaluating the ecological benefits derived from resource utilization. The PERP implemented in Dongting Lake wetland represents an exemplary ecological project aimed at restoring lake wetland habitats. In this study, we employed the Carnegie-Ames-Stanford approach (CASA) model and remote sensing techniques to investigate the spatiotemporal evolution of NPP and its driving factors pre- and post-PERP implementation. Our findings revealed that: (1) PERP significantly altered the composition structure of wetland cover in Dongting Lake, primarily due to reed and mudflat conversions, resulting in a substantial increase in Poplar-retreat area to 13,895.3 ha; (2) Implementation of PERP led to a significant decline in NPP within poplar plantation areas, with regional NPP experiencing a decrease by 63.91 %. It was predominantly driven by shifts in NPP within reed beaches, forest beaches, and moss marshlands; (3) The analysis on driving contributions to NPP changes demonstrated that landscape pattern elements (41.47 %) > climate elements (30.29 %) > vegetation cover element (8.31 %), while marginal effects on NPP indicated that increased rainfall, evapotranspiration, patch diversity, and aggregation weakened its marginal effect whereas elevated temperature strengthened it instead. The study provided an important reference for revealing the carbon sink mechanism of the human-land coupling of wetland landscapes.

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引用次数: 0

Comprehensive suitability assessment of fish habitat by integrating mechanism model and bayesian network model

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.ecoleng.2025.107527

Yuliang Yuan , Ran Li , Jingjie Feng , Hang Wan , Honghui Lin , Xiaolong Cheng

The Fish Habitat Comprehensive Suitability (FHCS) indicator plays a pivotal role in evaluating fish spawning and egg hatching behavior. Assessments of fish spawning and egg hatching suitability have traditionally relied on deterministic outcomes from single- or multi-factor hydrological designs. However, considering the uncertainty of riverine environments, the FHCS and its components, including the fish spawning weighted suitability area (WUA) and the potential number of eggs hatching (Negg), should be viewed as random variables that follow specific probability distributions. To address this, an FHCS assessment method combining a mechanism model with a Bayesian network (BN) model was developed to evaluate the FHCS of four major Chinese carps (FMCCs) in the Xunjiang River, China. The mechanism model provided foundational data essential for constructing the BN. The BN model was then employed to determine the values of key factors, such as Weighted Usable Area (WUA) and egg viability (Negg), which were subsequently used to calculate the FHCS of the study area. The results of the study were obtained using the mean of the 94 % confidence intervals of the BN model parameters. The results showed that the suitable spawning period for FMCCs at the Dongta spawning ground was 68 days in 2022, compared to just 7 days in 2023. The suitable hatching period for eggs was 65 days in 2022 and only 7 days in 2023. The FHCS assessment for the study area revealed that the period of fish habitat suitability was 57 days in 2022. However, due to the brief duration of favorable flow conditions in 2023, there were no overlapping time intervals suitable for both spawning and hatching. This underscores the critical role of comprehensive suitability assessments for fish spawning and egg hatching, offering more precise and scientifically grounded tools for fish conservation.

{"title":"Comprehensive suitability assessment of fish habitat by integrating mechanism model and bayesian network model","authors":"Yuliang Yuan , Ran Li , Jingjie Feng , Hang Wan , Honghui Lin , Xiaolong Cheng","doi":"10.1016/j.ecoleng.2025.107527","DOIUrl":"10.1016/j.ecoleng.2025.107527","url":null,"abstract":"<div><div>The Fish Habitat Comprehensive Suitability (FHCS) indicator plays a pivotal role in evaluating fish spawning and egg hatching behavior. Assessments of fish spawning and egg hatching suitability have traditionally relied on deterministic outcomes from single- or multi-factor hydrological designs. However, considering the uncertainty of riverine environments, the FHCS and its components, including the fish spawning weighted suitability area (WUA) and the potential number of eggs hatching (Negg), should be viewed as random variables that follow specific probability distributions. To address this, an FHCS assessment method combining a mechanism model with a Bayesian network (BN) model was developed to evaluate the FHCS of four major Chinese carps (FMCCs) in the Xunjiang River, China. The mechanism model provided foundational data essential for constructing the BN. The BN model was then employed to determine the values of key factors, such as Weighted Usable Area (WUA) and egg viability (Negg), which were subsequently used to calculate the FHCS of the study area. The results of the study were obtained using the mean of the 94 % confidence intervals of the BN model parameters. The results showed that the suitable spawning period for FMCCs at the Dongta spawning ground was 68 days in 2022, compared to just 7 days in 2023. The suitable hatching period for eggs was 65 days in 2022 and only 7 days in 2023. The FHCS assessment for the study area revealed that the period of fish habitat suitability was 57 days in 2022. However, due to the brief duration of favorable flow conditions in 2023, there were no overlapping time intervals suitable for both spawning and hatching. This underscores the critical role of comprehensive suitability assessments for fish spawning and egg hatching, offering more precise and scientifically grounded tools for fish conservation.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"212 ","pages":"Article 107527"},"PeriodicalIF":3.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165811","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}

引用次数: 0