Ecological Engineering最新文献

{"title":"Large cobblestone dams for natural flood management in wide peatland gullies","authors":"Adam Ryan Johnston ,&nbsp;David Brown ,&nbsp;Tim Allott ,&nbsp;Salim Goudarzi ,&nbsp;Martin Kay ,&nbsp;David Milledge ,&nbsp;Emma Shuttleworth ,&nbsp;Tom Spencer ,&nbsp;Martin Evans","doi":"10.1016/j.ecoleng.2025.107702","DOIUrl":"10.1016/j.ecoleng.2025.107702","url":null,"abstract":"<div><div>Peatland restoration is increasingly used for natural flood management (NFM). In the restoration of heavily degraded blanket peatland sites, erosional gully blocking is used to capture sediment and rewet peat in smaller peat gullies. There is limited prospect for restoration of wider late-stage erosional gullies, however these have potential for large water storage capacities for NFM barriers. A new type of peatland gully block, Large Cobblestone Dams (LCDs), designed to create large temporary in-storm storage volumes are evaluated here. Different modifications to LCD design, including dam-face modification and drainage outlets are tested. Observations of dam pond levels and input discharge are used to evaluate storage functioning. LCDs achieve temporary in-storm storage volumes to the order of 10–100 m³. Bare cobblestones were too permeable, with peat turfed dam faces improving storage utilisation. A drainage outlet is essential for inter-storm drainage to enable storage availability for following storm events. Opening of drainage holes and blocking of the outlet was observed immediately following peat turfing, however this stabilised following 1 year. With an optimised design, LCDs can provide relatively large dynamic storage volumes in peatland gullies which are not restoration priorities which with targeted design could provide NFM benefits to downstream communities.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107702"},"PeriodicalIF":3.9,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229796","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":"Identifying the optimal flow conditions of a fishway with two entrances for endemic fishes at a high-altitude hydropower station in the Tibetan Himalaya, China","authors":"Sicheng Zeng ,&nbsp;Junjun Tan ,&nbsp;Junjian Sun ,&nbsp;Yuanyang Wang ,&nbsp;Giri Raj Kattel ,&nbsp;Xiaotao Shi","doi":"10.1016/j.ecoleng.2025.107698","DOIUrl":"10.1016/j.ecoleng.2025.107698","url":null,"abstract":"<div><div>Operational rules of the hydropower plant and hydrological conditions can lead to significant fluctuations of water levels downstream the dam and affect the efficiency of fishway entrance. Designing a fishway with two entrances to accommodate the fluctuations in downstream water levels can help fish successful upstream migration. This study aims at identifying the operating modes and optimal flow conditions of fishway with two entrances considering of fish swimming performance and hydraulics conditions at fishway entrances. Hence, fish swimming tests related to four endemic species including <em>Schizothorax oconnori</em>, <em>Schizothorax waltoni</em>, <em>Ptychobarbus dipogon</em> and <em>Schizopygopsis younghusbandi</em> in XH River to identify five behavioral zones (non-rheotactic, induction, preference, burst, and barrier zone) of fish by coupling of hydrodynamic conditions under seven different dam operational scenarios. It is found that the induction zone (0.1–0.4 m/s) and preference zone (0.4–1.3 m/s) for four endemic fish species, the potential migration routes of fish and potential management rules of two entrances have been proposed. The results suggested that #1 entrance of fishway can be operated in scenarios A2, and #2 entrance of fishway can be operated in scenarios A1 and B2, while both two entrances of the fishway needed to be operated in scenarios B1, B3 and C. This study highlights the importance reference for regulating fishway with two entrances at the investigated case study in the Tibetan Himalaya, and proposes a methodology of the fishway entrances for other high-altitude hydropower stations to improve fishway efficiency.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107698"},"PeriodicalIF":3.9,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229795","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":"Diatom colonisation and biofilm metal bioaccumulation: Can Indigenous Knowledge Systems aid the ecological engineering of urban coastlines?","authors":"J. Ndaba ,&nbsp;P. Cotiyane-Pondo ,&nbsp;L. Human ,&nbsp;E. Puccinelli ,&nbsp;P. Pieterse ,&nbsp;P. Pattrick ,&nbsp;F. Porri","doi":"10.1016/j.ecoleng.2025.107696","DOIUrl":"10.1016/j.ecoleng.2025.107696","url":null,"abstract":"<div><div>Marine engineered structures alter the coastal ecosystems' functionality, replacing natural substrates with flat surfaces, often negatively impacting biodiversity. While providing coastal protection, artificial structures can hinder the initial colonisation by biofilm and the recruitment of coastal species. Greening the grey infrastructure through nature-based interventions is increasingly used to enhance biodiversity in artificial structures. This study explores the potential of the sedge <em>Cyperus textilis</em> and its Indigenous Knowledge applications as a substrate for coastal eco-engineering at an urbanised site on the southeast coast of South Africa. Diatom succession and metal bioaccumulation on the deployed trial-version designs (<em>imizi</em> structures) were monitored for a month, with samples collected at six, twelve, twenty-four, seventy-two hours, one and two weeks, and one month after deployment. Water quality, including dissolved nutrients and metal concentrations, were assessed near the substrates. Findings indicated that diatom colonisation occurred within twelve hours, with initial species including <em>Fragilaria pulchella</em>, <em>Neofragilaria nicobarica</em>, <em>Navicula</em> sp. and <em>Grammatophora undulata</em>, followed by a significant increase (4.6 times) in species diversity from 5 to 23 diatoms after one week. Metal bioaccumulation of aluminium, iron, zinc, manganese and arsenic was higher in the biofilm developing on the substrate compared to its surrounding environment (<em>imizi</em> substrate and water), suggesting the potential bioremediating capabilities of the biofilm on the nature-based material. These findings indicate the potential suitability of using Indigenous Knowledge-based materials for coastal eco-engineering practices as promoters of primary productivity, with the added potential of the plant <em>C. textilis</em> for bioremediation of toxic metals such as arsenic.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107696"},"PeriodicalIF":3.9,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204875","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":"The ecosystem-based marine comprehensive zoning practice and evaluation: A case study of Nantong, China","authors":"Zhou Chen ,&nbsp;Haifeng Zhang ,&nbsp;Lin Zhao ,&nbsp;Wen Du ,&nbsp;Min Xu","doi":"10.1016/j.ecoleng.2025.107684","DOIUrl":"10.1016/j.ecoleng.2025.107684","url":null,"abstract":"<div><div>The ecosystem-based Marine spatial planning (MSP) is an effective approach to mitigate conflicts between marine ecological conservation and resource exploitation. This study applies the Marxan model to delineate marine ecological zones with multiple protection standards in the Nantong Sea, China. By integrating resource-use zoning, two comprehensive zoning schemes with varying degrees of ecological protection are developed. The process involves adjusting the ecological protection costs within the Marxan model by accounting for impacts of resource-use zoning on ecological conservation. The goal is to optimize both ecological and comprehensive zoning, while evaluating the spatial structure and overall benefits of comprehensive zoning optimized schemes. The recommended comprehensive zoning optimized scheme allocates 34.19 % and 2.95 % of the area to ecological preservation zones and ecological control zones, respectively. Marine development zones and reserve zones account for 27.22 % and 35.64 % of the area. Ecological preservation zones effectively fulfill protection objectives, while control zones and reserve zones serve to buffer preservation areas from development zones, safeguarding sufficient spatial resources for future marine development. During the evaluation of the optimized scheme, ecological preservation zones and reserve zones each account for approximately 35 % of the area, with the developed coastline comprising no more than 30 %. More than 35 % of typical cross-sections are in an ecological preservation state, while 40 % are in a reserved state. Additionally, the recommended scheme optimizes protection costs, the compactness of preservation zones, and economic benefits. This study, using the Nantong Sea as a case study, outlines the technical process from marine single zoning to comprehensive zoning, and from comprehensive zoning to optimized comprehensive zoning and scheme evaluation. It provides a scientific approach for assessing MSP schemes and offering detailed references for mid- to small-scale MSP projects.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107684"},"PeriodicalIF":3.9,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185043","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":"How anthropogenic modification of riverscapes reduces the resilience of floodplain water bodies to drought","authors":"Luisa Coder ,&nbsp;Andreas Musolff ,&nbsp;Pia Marie Kronsbein ,&nbsp;Kay Knöller ,&nbsp;Olaf Büttner ,&nbsp;Karsten Rinke ,&nbsp;Jörg Tittel","doi":"10.1016/j.ecoleng.2025.107686","DOIUrl":"10.1016/j.ecoleng.2025.107686","url":null,"abstract":"<div><div>Between 2018 and 2023, central Europe experienced a series of droughts—one manifestation of climate change expected to increase in frequency in the future. These events increasingly expose aquatic ecosystems, such as floodplain water bodies, to hydrological extremes. Simultaneously, anthropogenic river modifications like channelization and diking have been progressively disconnecting semi-aquatic ecosystems from the main river. Here, we examined how drought and hydromorphological modifications affect the water quality of floodplain water bodies.</div><div>Specifically, we investigated 36 floodplain water bodies near the Elbe River in Germany and analyzed water samples from spring and late summer 2022. We assessed connectivity (past frequency of surface connection to the stream) and effects of drought (evaporation measured by changes in stable water isotopes) using a scoring system. This system evaluated impairment and habitat loss, allowing us to quantify the impact of hydrological disconnection on floodplain water bodies.</div><div>Severe impacts, including low surface oxygen (&lt;3 mg/L), products of anaerobic decomposition, fish kills, and dry-outs, primarily affected water bodies with low connectivity (&lt;10 %). Multiple linear regression linked low connectivity and high evaporation to habitat degradation (r² = 0.487, <em>p</em> &lt; 0.001). Furthermore, dissolved oxygen concentrations increased with increasing chlorophyll <em>a</em> in connected lakes (p &lt; 0.001), as expected, but no relationship was observed in disconnected lakes (<em>p</em> = 0.626). We attribute this lack of correlation to the decomposition of fine-grained organic sediments that have not been resuspended and flushed out in disconnected lakes. We conclude that river modifications for navigation reduce floodplain resilience to droughts, amplifying the effects of climate change on semi-aquatic ecosystems.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107686"},"PeriodicalIF":3.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169551","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":"Responses and influencing factors of benthic macroinvertebrate recovery in restored subtropical urban rivers","authors":"Linhui Su ,&nbsp;Weifeng Ruan ,&nbsp;Tingzhe Ou ,&nbsp;Jinghua Zhang ,&nbsp;Yunv Dai ,&nbsp;Ran Tao ,&nbsp;Xiaomeng Zhang ,&nbsp;Nora Fung-yee Tam ,&nbsp;Yang Yang ,&nbsp;Yiping Tai","doi":"10.1016/j.ecoleng.2025.107687","DOIUrl":"10.1016/j.ecoleng.2025.107687","url":null,"abstract":"<div><div>Urban streams in many regions of the world are subject to water environment and ecological degradation, and the efficacy of conventional remediation strategies remains uncertain. This study evaluated the initial ecological recovery in rehabilitated urban streams by analyzing the response of benthic macroinvertebrates community and water quality. The effects of hard embankment engineering were quantified using an Index of Biological Integrity (IBI), which was derived from five core indicators: number of taxa, Shannon-Wiener index, Tubificidae%, tolerant% and collectors%. Data were collected from 29 sampling sites across 11 treated urban channels in Guangzhou City. As impervious surface area increased, sensitive species declined or vanished, while pollution-tolerant species like Oligochaeta and Chironomidae became dominant. Macroinvertebrate diversity and functional feeding groups significantly decreased, leading to “very poor” and “poor” health statuses. Key water parameters affecting benthic species diversity included dissolved oxygen (DO), chemical oxygen demand (COD_Mn), total phosphorus (TP), depth, and flow velocity. The Shannon-Weiner index and functional feeding group for macroinvertebrates show seasonal consistency in disturbance zones (<em>P</em> &lt; 0.05). However, Benthic Index of Biological Integrity (B-IBI) assessment results vary seasonally, correlating significantly with disturbance intensity, indicating benthic communities' sensitivity to habitat stressors. Water replenishment strategies mitigate early urbanization impacts, highlighting their role in boosting urban stream resilience and offering new insights for ecological rehabilitation and global urban river management.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107687"},"PeriodicalIF":3.9,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169550","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":"The change pattern and spatiotemporal transition of land use carbon emissions in China's Three-North Shelterbelt Program Region","authors":"Liwei Yang ,&nbsp;Chengyuan Wang ,&nbsp;Yuan Liu ,&nbsp;Tongpeng Wang ,&nbsp;Zhenglin Tian ,&nbsp;Longxin Ding ,&nbsp;Zian Liu ,&nbsp;Tiantian Feng ,&nbsp;Qian Niu ,&nbsp;Xuegang Mao ,&nbsp;Viktor Karminov ,&nbsp;Sergey Chumachenko","doi":"10.1016/j.ecoleng.2025.107680","DOIUrl":"10.1016/j.ecoleng.2025.107680","url":null,"abstract":"<div><div>Land use carbon emissions have become a global research focus, with previous studies primarily concentrating on the estimation of carbon emissions from land use and the analysis of influencing factors. However, the spatial patterns and trends of land use carbon emissions are often overlooked, and neglecting this aspect may hinder the development of targeted mitigation measures and policies. Therefore, this study focuses on the ecological restoration Program region in China - the Three-North Shelter Forest Program (TNSFP). By combining the carbon emission coefficient method with Exploratory Spatial-Temporal Data Analysis (ESTDA), this research provides a visual analysis of the spatial patterns and trends of land use carbon emissions in the TNSFP region of China. We found that from 1995 to 2020, the total carbon emissions from land use in the TNSFP region increased from 2.78 × 10⁸ tons to 8.39 × 10⁸ tons, representing a threefold increase. Land use carbon emissions exhibited a significant positive spatial autocorrelation, with spatial convergence showing a trend of initially decreasing and then increasing. The spatiotemporal pattern of land use carbon emissions displayed clear path dependence and lock-in spatial characteristics, with a gradual weakening trend. We emphasize that urbanization has been the primary driver of carbon emissions in the TNSFP region, and traditional ecological conservation and afforestation policies aimed at enhancing carbon sequestration have proven insufficient in curbing the rise in carbon emissions. The findings offer new insights into the spatial patterns and trends of land use carbon emissions in China's ecological restoration regions, providing a deeper understanding. Additionally, they offer valuable references for the green, low-carbon, and sustainable development of ecological restoration regions in China and other countries, as well as for the formulation of differentiated carbon reduction policies.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107680"},"PeriodicalIF":3.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147077","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":"Meta-analysis of mangrove phytoremediation for heavy metal mitigation in coastal regions of China","authors":"Shafeeq Ur Rahman ,&nbsp;Jing-Cheng Han ,&nbsp;Ghulam Yasin ,&nbsp;Aanisa Manzoor Shah","doi":"10.1016/j.ecoleng.2025.107683","DOIUrl":"10.1016/j.ecoleng.2025.107683","url":null,"abstract":"<div><div>Heavy metals (HMs) are major contributors to coastal pollution and pose serious threats to coastal biodiversity. Given their non-degradability, bio-accumulation, bio magnification, abundance, and toxicity through successive trophic levels, effective management strategies are crucial to addressing toxic metals. Recently, mangrove forestation regions in China have faced increasing HM pollution. This meta-analysis evaluates phytoremediation strategies employed by various mangrove species against toxic metals and organic pollutants in different provinces of China. Data on the phytoremediation potential of mangroves were collected and analyzed from 220 publications within 24 years, from 2000 to 2024. Results indicate a 28 % increase in phytoremediation potential in China. Notably, significant phytoremediation was observed in <em>Bruguiera sexangula</em> (33 %) in Hainan, <em>Kandelia abovata</em> in Guangdong (27 %), Zhejiang (25 %), Liaoning (26 %), and Tianjin (6 %), <em>Avicennia marina</em> in Shandong (22 %); Sonneratia <em>apetala</em> (3 %) in Jiangsu, <em>Bruguiera gymnorhiza</em> in Fujian (9 %) and <em>Rhizophora stylosa</em> (6 %) in Guangxi province. Additionally, significant accumulation of HMs was observed in sediments (5 μg/g), plant parts (3–20 μg/g), and soil (7 μg/g). Our study demonstrated that <em>K. obovata</em>, <em>B. sexangula, A. marina</em>, <em>B.gymnorhiza</em>, <em>R. stylosa,</em> and <em>S. apetala</em> showed morphological changes such as pneumatophores and viviparous propagules, biochemical changes (e.g., increased antioxidants, such as MDA, PPO, SKDH, CAD) and genetic changes, (e.g., upregulation of antioxidant genes) in response to the toxic effects of HMs. Furthermore, Igeo, PLI, and ERI values reveal that Guangdong, Shandong, Jiangsu, Zhejiang, and Tianjin would be considered polluted regions (Igeo &gt;6; PLI &lt; 1; ERI &gt; 1).</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107683"},"PeriodicalIF":3.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169552","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":"Is it ecologically feasible to enclose mangrove-mud coasts using multiple concrete structures for erosion control? Evidence from the Vietnamese Mekong Delta","authors":"Nguyen Tan Phong ,&nbsp;Nguyen Bao Thuan ,&nbsp;Nguyen Ngoc Tien ,&nbsp;Huynh Van Quoc","doi":"10.1016/j.ecoleng.2025.107678","DOIUrl":"10.1016/j.ecoleng.2025.107678","url":null,"abstract":"<div><div>Multiple concrete (offshore and shoreline) structures are increasingly being built to enclose entire mangrove mud coasts to control coastal erosion. Until now, it remains unclear as to whether or not enclosing mangrove-mud coasts using multiple concrete structures for erosion control is ecologically feasible. The authors used the Tien Giang Protected Mangrove Forest (Tien Giang PMF), Tien Giang Province, the Vietnamese Mekong Delta, as a case study to partially address this question. The authors investigated the relationship between the construction of multiple shoreline and offshore structures constructed along the Tien Giang coast (TGCPS) and the protection of Tien Giang PMF through 2024 in terms of shoreline changes, changes to mangrove vegetation cover, and strong mangrove growth in the absence of the TGCPS protection. This study involved the analysis of shoreline changes over multiple years (2000 and 2024), calculation of the enhanced vegetation index (EVI), in addition to ground truthing, and field investigations. The authors found that the shoreline of Tien Giang PMF has changed despite the construction of the TGCPS. TGCPS were constructed in areas of moderate to high erosion and had a low level of mangrove growth in the surrounding areas. Mangrove forests survived and grew strongly in areas without protection by TGCPS. The survival of the mangrove forests was threatened by multiple threats. Therefore, the combination of shoreline and offshore structures is acceptable as a short-term strategy in a specific area to control eroding muddy coast. However, it is therefore not ecologically feasible to enclose an entire coast using multiple shoreline and offshore structures without properly considering the local hydrodynamic elements. Instead, a holistic approach should be designed with rigorous hydrodynamic studies, and the placement of structures must be strategic and well-studied.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107678"},"PeriodicalIF":3.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147076","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":"Tradeoffs among ecosystem services under ecological engineering construction: Donor and receiver evaluation of 25 soil and water conservation projects in China","authors":"Yuanxiang Yang ,&nbsp;Lang Huang ,&nbsp;Shihuai Deng ,&nbsp;Xiaohong Zhang ,&nbsp;Wenyue Hou ,&nbsp;Shijiang Xiao ,&nbsp;Rui Shen ,&nbsp;Xiang You ,&nbsp;Yan Yang ,&nbsp;Hengyu Pan","doi":"10.1016/j.ecoleng.2025.107685","DOIUrl":"10.1016/j.ecoleng.2025.107685","url":null,"abstract":"<div><div>China's recent ambitious ecological goals have driven ecological engineering projects, some of which have faced criticism for inefficiency and increasing trade-offs among ecosystem services (ESs). Evaluating these projects is crucial for developing more sustainable solutions. To address this issue, we develop a comprehensive evaluation framework that combines emergy analysis (donor side) and economic analysis (receiver side) to assess the value of five key ecosystem services (ESVs) using 25 soil and water conservation projects (SWCPs) as case studies. Furthermore, we apply partial least squares-structural equation modeling (PLS-SEM) to analyze the interaction mechanisms among drivers, including measures factors (<em>measures</em>), terrain factors (<em>terrain</em>), environmental factors (<em>environment</em>), and climatic factors (<em>climate</em>). The results show that after the SWCPs construction, although increase in the total ESs value (ESV_T) have been found, the decrease of water conservation is demonstrated from both emergy and economic analysis. Carbon sequestration increased in all studied SWCPs expect the Gaocang river small watershed. Inconsistent results from the two adopted methods suggest that the ecological engineering evaluation should consider from both donor side and receiver side. Tradeoffs among ESVs, most notably in soil retention and water conservation pair, suggest the SWCPs are uncoordinated with local ESs. Results derived from our proposed indicators show that the emergy sustainability index (ESI) of more than half of the studied SWCPs decreases, while the cumulative present value of 8 SWCPs also declines. Finally, we find that terrain and climate are the primary drivers of ESVs increases, whereas environment and measures have the most significant negative impacts. <em>Measures</em> weakens the positive effect of <em>terrain</em> while amplifying the negative effect of <em>environment</em>. Finally, suggestions toward optimized ecological construction were raised.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"219 ","pages":"Article 107685"},"PeriodicalIF":3.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147168","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}