Ecological Indicators最新文献

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Conservation strategies for the North China leopard: Establishing effective ecological corridors in Shanxi Province
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112908
Jiahao Zhang, Fengyi Li, Huizhi Zhang, Xiaoyu Sun
{"title":"Conservation strategies for the North China leopard: Establishing effective ecological corridors in Shanxi Province","authors":"Jiahao Zhang,&nbsp;Fengyi Li,&nbsp;Huizhi Zhang,&nbsp;Xiaoyu Sun","doi":"10.1016/j.ecolind.2024.112908","DOIUrl":"10.1016/j.ecolind.2024.112908","url":null,"abstract":"<div><div>Increasing urbanization has resulted in fragmentation and shrinkage of the North China leopard’s habitat, posing a threat to its survival. By establishing ecological corridors, the North China leopard population will be able to recover and stabilize. It is well established that the connectivity of ecological networks is closely related to species dispersal abilities, therefore, the establishment of ecological networks is one of the most important things to do when it comes to the protection of biodiversity. By constructing ecological networks for North China leopards using circuit theory and the least-cost path model, in addition to analyzing ecological corridors and habitat quality in the areas adjacent to these corridors, it is possible to increase the utilization of ecological corridors by North China leopards more effectively. The purpose of this research is to explore the effectiveness of an ecological corridor construction program for the North China leopard, focusing on the distribution area of the North China leopard in Shanxi Province, China. By adopting the proposed approach, it is hoped that the leopard population of North China will be stimulated to recover and stabilize, while the ecosystem will be maintained and conflicts between humans and leopards will be minimized.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112908"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748490","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}
引用次数: 0
Mapping protection effects and gaps of forest dynamics in Europe 2012 to 2018
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112895
Manuel Wolff , Benjamin Labohm , Dagmar Haase , Erik Andersson
{"title":"Mapping protection effects and gaps of forest dynamics in Europe 2012 to 2018","authors":"Manuel Wolff ,&nbsp;Benjamin Labohm ,&nbsp;Dagmar Haase ,&nbsp;Erik Andersson","doi":"10.1016/j.ecolind.2024.112895","DOIUrl":"10.1016/j.ecolind.2024.112895","url":null,"abstract":"<div><div>Forest management and conservation can help forests adapt to and minimize the effects of natural and anthropogenic disturbance factors on forest mortality. However, little quantitative information is currently available on the impact of different management and conservation practices on forest dynamics in Europe focusing on forest extent and health simultaneously. Against this background, this paper aims to understand the effectiveness of management and protection practices on two key indicators of forest dynamics under different land use conditions. We analyzed changes in both indicators in Europe between 2012 and 2018, detected spatial explicit mean differences between forest dynamics of protected vis á vis unprotected areas, and examined protected areas of multiple management types.</div><div>The results show that European forest area increased by 1.2 percentage points pp while canopy density decreased by 2 pp. The average forest area in protected areas increased, but at a slower rate than in their unprotected surroundings indicating no protection effects., In contrast, potential protection gaps can be observed for canopy density changes as density dropped in protected areas by 0.5 pp while it remained stable in unprotected areas. Finally, significant differences between IUCN management and protection categories are quantified against three settlement types and discussed along characteristic examples. In doing so, this paper contributes to the EU Forest Strategy 2030 by providing a robust and spatially explicit monitoring of the effectiveness of managed and protected forests linking observed overall patterns of forest dynamics to conclusions on the role of different management and protection practices.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112895"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748540","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}
引用次数: 0
Comprehensive evaluation and scenario simulation for determining the optimal conservation priority of ecological services in Danjiangkou Reservoir Area, China
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112906
Pengcheng Zhao , Lihui Wang , Yuhong Huang , Yifan Zhao , Qichi Yang , Jinliang Huang , Yun Du , Feng Ling
{"title":"Comprehensive evaluation and scenario simulation for determining the optimal conservation priority of ecological services in Danjiangkou Reservoir Area, China","authors":"Pengcheng Zhao ,&nbsp;Lihui Wang ,&nbsp;Yuhong Huang ,&nbsp;Yifan Zhao ,&nbsp;Qichi Yang ,&nbsp;Jinliang Huang ,&nbsp;Yun Du ,&nbsp;Feng Ling","doi":"10.1016/j.ecolind.2024.112906","DOIUrl":"10.1016/j.ecolind.2024.112906","url":null,"abstract":"<div><div>The identification of conservation priority for ecosystem services (ESs) holds paramount importance in harmonizing environmental sustainability with human well-being and bolstering sustainable resource management. However, the utilization of a singular evaluation indicator and the employment of ambiguous methods for delineating conservation priorities have resulted in deviations in the decision-making processes. This study focused on the Danjiangkou Reservoir Area (DRA), the originating point and primary water source for the middle route of the South-to-North Water Transfer Project, and employed the InVEST model to quantify five key ESs, including carbon storage (CS), habitat quality (HQ), water yield (WY), water purification (WP), and soil conservation (SC) for the period spanning from 2000 to 2020 to simulate seven pending priority scenarios by utilizing the ordered weighting algorithm (OWA). Additionally, it incorporated the analytic hierarchy process (AHP) to formulate an evaluation indicator system that combines spatial distribution rationality, conservation efficiency, degree of trade-off, and policy compliance to quantify the scores for each pending scenario, thereby facilitating the determination of the optimal conservation priority. The results indicate a gradual temporal decline in these ESs. Spatially, CS, HQ, WP, and SC show strong synergies, while WY exhibits significant trade-offs with them. The optimal conservation priority, with a total area of 0.35 × 10<sup>4</sup> km<sup>2</sup> and primarily located in the high mountainous and hilly regions in the southern and central parts of DRA, is covered by forest and grass land. It exhibits both high conservation efficiency and spatial distribution rationality, which are based on the policy compliance and effectively coordinates relationships among various ESs. This study offers new insights into the quantification and visualization of the identification of optimal conservation priority. The outcomes serve as a reference for informing the protection and management strategies of water source areas and regions with a high supply of ESs.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112906"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748435","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}
引用次数: 0
Microbial communities indicate fine differences in pollution levels by emerging contaminants
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112875
Luciana Griffero , Emiliano Pereira-Flores , Carolina Lescano , Lorena Rodríguez-Gallego , Andrés Pérez-Parada , Cecilia Alonso
{"title":"Microbial communities indicate fine differences in pollution levels by emerging contaminants","authors":"Luciana Griffero ,&nbsp;Emiliano Pereira-Flores ,&nbsp;Carolina Lescano ,&nbsp;Lorena Rodríguez-Gallego ,&nbsp;Andrés Pérez-Parada ,&nbsp;Cecilia Alonso","doi":"10.1016/j.ecolind.2024.112875","DOIUrl":"10.1016/j.ecolind.2024.112875","url":null,"abstract":"<div><div>Aquatic microbial communities are well known to rapidly respond to environmental changes, and to harbor the highest taxonomic and genetic diversity among biological communities. Nevertheless, they remain under-utilized as bioindicators of contamination. Here we applied indicator value analysis (IndVal) to aquatic microbial communities to identify indicators of anthropogenic pressure by emerging contaminants at basin scale. For that, we defined categories of impact according to the Aquatic Quality Index (AQI) based on previous determinations of emerging contaminants (ECs) along an anthropogenic impact gradient. Indicator value analysis (IndVal) was conducted to identify amplicon sequence variants (ASVs; analogous to species in other fields of ecology) associated with each category.</div><div>It was possible to find combinations of ASV indicators for all impact categories defined by the AQI. Microbial indicators exhibited a high capacity to predict the group membership of the samples within each AQI category and to correctly assign the samples to the appropriate category, employing leave-one-out cross-validation (100 % correctly assigned for streams and coastal sea and 94% for lagoons).</div><div>This is the first report of emerging contamination indicators based on microbial communities. These results reaffirm the capacity of microbial communities to rapidly adjust their taxonomic composition in response to environmental changes. Therefore, these microscopic entities are promising for the application of environmental management measures and the approximation presented here contributes to the advancement of tools dedicated to monitoring aquatic ecosystems, and the application of more stringent standards for water quality than what is currently implemented.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112875"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748491","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}
引用次数: 0
Spatiotemporal evolution and influencing mechanisms of carbon pressure at the county scale: A case study of central-south Liaoning urban agglomeration, China
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112900
Xinrui Liu , Rongfei Guo , Yabing Zhang , Na Liu , Jian Zhang
{"title":"Spatiotemporal evolution and influencing mechanisms of carbon pressure at the county scale: A case study of central-south Liaoning urban agglomeration, China","authors":"Xinrui Liu ,&nbsp;Rongfei Guo ,&nbsp;Yabing Zhang ,&nbsp;Na Liu ,&nbsp;Jian Zhang","doi":"10.1016/j.ecolind.2024.112900","DOIUrl":"10.1016/j.ecolind.2024.112900","url":null,"abstract":"<div><div>Achieving carbon neutrality necessitates a dual focus on minimizing carbon emissions and maximizing carbon sequestration, rather than solely concentrating on emission reduction. This study proposes a Carbon Pressure Index (CPI) to assess the equilibrium between emissions and sequestration, determine the factors influencing varying carbon pressure levels, and formulate region-specific strategies based on these levels. A nested methodological approach, combining spatiotemporal leaps analysis and quantile regression, is employed to appraise county-level carbon pressure dynamics across multiple quantiles in the central-south Liaoning urban agglomeration (CSLUA) from 2002 to 2021. Three principal findings were derived: Firstly, the spatiotemporal distribution of the CPI across CSLUA districts and counties demonstrates regional differentiations conforming to a gradient pattern, with values declining from urban centers toward peripheral areas. Carbon pressure is greater in the west, less in the east, and critically high in the central-western zones. Secondly, the spatial distribution of the CPI indicates clear high-high and low-low agglomeration clusters, suggesting persistent local structures that indicate path dependence and resistance to change in carbon pressure transfer. While the central-western regions exhibit further changes, the eastern areas maintain relative stability. Thirdly, environmental technology factors constrain most districts and counties, while the combined influence of industrial activity and population, along with economic and urbanization pressures, have predominant effects in smaller areas in the central-western region. This highlights the effectiveness of the nested spatiotemporal leaps and quantile regression model in explaining the driving forces underlying the spatiotemporal shifts in CPI. The results suggest that attaining superior regional low-carbon development requires rectifying the asymmetry between carbon sources and sinks, considering the driving forces of diverse transition pathways and their interactions, to finally achieve synergistic optimization that incorporates both shared and unique regional characteristics.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112900"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748541","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}
引用次数: 0
Coexistence in long-term managed lakes: Limited evidence of negative impacts of invasive macrophytes on fish communities
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112931
Vinícius Londe , Candice M. Prince , S. Luke Flory
{"title":"Coexistence in long-term managed lakes: Limited evidence of negative impacts of invasive macrophytes on fish communities","authors":"Vinícius Londe ,&nbsp;Candice M. Prince ,&nbsp;S. Luke Flory","doi":"10.1016/j.ecolind.2024.112931","DOIUrl":"10.1016/j.ecolind.2024.112931","url":null,"abstract":"<div><div>Invasive macrophytes are widespread and can disrupt freshwater ecosystems if not properly managed. Their impact on fish is a topic of ongoing discussion, with studies reporting contrasting results. Utilizing datasets spanning 17 years of monitoring across 34 lakes in Florida, we examined the effects of the primary non-native invaders water hyacinth (<em>Eichhornia crassipes</em> (Mart.) Solms), hydrilla ((<em>Hydrilla verticillata</em> L. f.) Royle), and water lettuce (<em>Pistia stratiotes</em> L.), plus the entire non-native macrophyte assemblage and abiotic variables on fish species richness, Shannon diversity, abundance, length, and biomass. Together, these indicators help assess and manage the impact of invasive species and environmental changes on freshwater ecosystems. Our study was conducted at both habitat and lake scales to ensure a more thorough understanding of potential impacts. We found evidence of a marginally positive influence of hydrilla on fish species richness and abundance, a positive influence of water lettuce on Shannon diversity, and a positive effect of water hyacinth on fish length, all at the habitat scale. Notably, these effects were largely analogous to those of native macrophytes. Water temperature of about 26 °C and dissolved oxygen levels between 5 and 10 mg/L appeared to be optimal for fish. Lakes located in northwest Florida exhibited higher fish diversity and abundance. The integrated use of ecological indicators reveals that long-term management of lakes might limit populations of non-native macrophytes, thereby reducing the adverse effects of invaders on fish communities and facilitating their coexistence. This study highlights the importance of management strategies and long-term monitoring in minimizing the impacts of invasive plants on freshwater ecosystems.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112931"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748436","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}
引用次数: 0
Ecological Security Pattern Construction in Typical Oasis Area Based on Ant Colony Optimization: A Case Study in Yili River Valley, China
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112770
Hairu Nie , Yang Zhao , Jie Zhu , Ang Ning , Wenhua Zheng
{"title":"Ecological Security Pattern Construction in Typical Oasis Area Based on Ant Colony Optimization: A Case Study in Yili River Valley, China","authors":"Hairu Nie ,&nbsp;Yang Zhao ,&nbsp;Jie Zhu ,&nbsp;Ang Ning ,&nbsp;Wenhua Zheng","doi":"10.1016/j.ecolind.2024.112770","DOIUrl":"10.1016/j.ecolind.2024.112770","url":null,"abstract":"<div><div>Establishing Ecological Security Pattern (ESP) is crucial for the harmonious development of society and the environment. Currently, the principal challenges in ecological planning include large contiguous ecological source areas and the accurate determination of ecological corridor widths. This study utilized the InVEST-MSPA-Conefor model, circuit theory, MATLAB, and the ArcGIS platform to analyze the Yili River Valley’s ESP, assess habitat quality, and identify habitat patch types. Results indicate that: (1) Habitat quality is higher in the southern and eastern parts of the river valley. The core area, vital for ecological connectivity, constituted 50.69 % of the study area. (2) Increased ecological resistance was predominantly observed in valley hills and near major transportation routes. (3) Seventy ecological corridors were identified, covering 3671.68 km<sup>2</sup> of major and 6968.31 km<sup>2</sup> of potential corridors, thus expanding the analysis from “source-line-point” to “source-line-point-plane” and strengthening ecological protection and management strategies. (4) The study proposes an optimization and management strategy of “Three Belts, Two Axes, and One Cluster” grounded in ESP results and local policies. The study advances the understanding of the Yili River Valley’s ecosystem structure, provides strategies for biodiversity conservation and ecological service optimization, and emphasizes the value of integrated, multi-dimensional modeling in ecological planning.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112770"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748536","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}
引用次数: 0
Evaluating the performance of spectral indices and meteorological variables as indicators of live fuel moisture content in Mediterranean shrublands
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112894
María Alicia Arcos, Ángel Balaguer-Beser, Luis Ángel Ruiz
{"title":"Evaluating the performance of spectral indices and meteorological variables as indicators of live fuel moisture content in Mediterranean shrublands","authors":"María Alicia Arcos,&nbsp;Ángel Balaguer-Beser,&nbsp;Luis Ángel Ruiz","doi":"10.1016/j.ecolind.2024.112894","DOIUrl":"10.1016/j.ecolind.2024.112894","url":null,"abstract":"<div><div>This article presents a methodology to estimate the live fuel moisture content (LFMC), a critical factor in the spread of forest fires, through machine learning tools. Random forest models were trained using field LFMC samples collected bi-weekly for 18 consecutive months in 43 shrubland plots in the Valencian region, a Mediterranean zone in eastern Spain. LFMC predictions were obtained for the weighted average of LFMC values, calculated using the Fraction of Canopy Cover (FCC) of dominant species as weights. Furthermore, a specific model was defined for predicting LFMC for the <em>Rosmarinus officinalis</em> species. A Forward Feature Selection (FFS) with a Leave-Location-Out Cross Validation (LLOCV) method was used to select predictors extracted from a spatiotemporal data set, which includes different spectral indices obtained from Sentinel-2 imagery and meteorological variables obtained from measurements at weather stations, along with other seasonal, geographical or topographic variables. Model predictions were validated with a LLOCV procedure, and also using independent field measurements of LFMC in another period with changes in the precipitation regime and average temperatures. Variables selected by FFS for the two LFMC models were: the cumulative precipitation in the previous 60 days (p60), the average of the daily mean temperature in the previous 60 days (t60), together with the Y-UTM coordinate and the sine and cosine of the day of the year. LFMC predictions for the weighted average of LFMC values also introduced the Transformed Chlorophyll Absorption Ratio Index (TCARI), resulting in an R<sup>2</sup> of 68.1 %. However, LFMC for the <em>Rosmarinus officinalis</em> species used the ratio between TCARI and the Optimized Soil-Adjusted Vegetation Index (OSAVI), in addition to the average daily minimum relative humidity in the 15 days prior to the date considered (R<sup>2</sup> = 74.9 %). LFMC time series analysis showed that the general trend of LFMC measures is satisfactorily captured by the predictions. Spatial and temporal variations in LFMC were analyzed throughout thematic maps in the studied area during the wildfire season.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112894"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748432","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}
引用次数: 0
Improving ecosystem respiration estimates for CO2 flux partitioning by discriminating water and temperature controls on above- and below-ground sources
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112855
Shuai Wang , Shujing Qin , Lei Cheng, Kaijie Zou, Chenhao Fu, Pan Liu, Lu Zhang
{"title":"Improving ecosystem respiration estimates for CO2 flux partitioning by discriminating water and temperature controls on above- and below-ground sources","authors":"Shuai Wang ,&nbsp;Shujing Qin ,&nbsp;Lei Cheng,&nbsp;Kaijie Zou,&nbsp;Chenhao Fu,&nbsp;Pan Liu,&nbsp;Lu Zhang","doi":"10.1016/j.ecolind.2024.112855","DOIUrl":"10.1016/j.ecolind.2024.112855","url":null,"abstract":"<div><div>Empirical models for estimating ecosystem respiration (ER) are widely used in CO<sub>2</sub> flux partitioning algorithms that partition net ecosystem CO<sub>2</sub> exchange (NEE) into gross primary productivity (GPP) and ER due to advantages of simple structures. However, empirical ER models remain limited due to single-source conceptualization that doesn’t discriminate different responses of aboveground respiration (AGR) and belowground respiration (BGR) to environmental factors (i.e., temperature and/or soil moisture). In this study, a dual-source module with only one parameter <em>α</em> was proposed and incorporated into six widely used ER models to enhance model capabilities. Long-term flux measurements of six typical terrestrial ecosystems and soil chamber respiration data at two sites were collected to evaluate models. Results showed that integration of the dual-source module can significantly improve the performance of empirical models in selected ecosystems with mean <em>R<sup>2</sup></em> improvement of 0.10 ± 0.16. The site years with relative increased <em>R<sup>2</sup></em> (Δ<em>R<sup>2</sup></em>) larger than 10 % range from 6 % to 79 % amongst different models. Further validation between soil respiration and estimated BGR showed good correlations (<em>r</em> &gt; 0.7) and demonstrated that proposed method can provide robust estimate of above/belowground respiration. Calibrated <em>α</em> varies amongst ecosystem types. Further analysis indicates variation of <em>α</em> is largely influenced by ratio of above/belowground biomass and annual average moisture conditions. Our findings highlight the critical need for partitioning ER models into dual-source for developing CO<sub>2</sub> flux partitioning algorithms and support the approach as an effective means to enhance the understanding of global carbon cycles with changing climate.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112855"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748431","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}
引用次数: 0
A vegetation strategy to balance the hazardous level of microplastics in the land–sea interface through rhizosphere remediation
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-12-01 DOI: 10.1016/j.ecolind.2024.112876
Weifeng Ruan , Yanqin Peng , Xi Ling , Bailun Yu , Yiping Tai , Nora Fung-Yee Tam , Yunv Dai , Yang Yang
{"title":"A vegetation strategy to balance the hazardous level of microplastics in the land–sea interface through rhizosphere remediation","authors":"Weifeng Ruan ,&nbsp;Yanqin Peng ,&nbsp;Xi Ling ,&nbsp;Bailun Yu ,&nbsp;Yiping Tai ,&nbsp;Nora Fung-Yee Tam ,&nbsp;Yunv Dai ,&nbsp;Yang Yang","doi":"10.1016/j.ecolind.2024.112876","DOIUrl":"10.1016/j.ecolind.2024.112876","url":null,"abstract":"<div><div>Microplastic (MP) pollution is an emerging threat to the natural environment and has become a global problem. Plants have been used to remove heavy metals, toxic organic pollutants, and MPs from contaminated environments. However, current research on the interaction between MPs and plants has focused on the food safety evaluation of terrestrial plants, such as crops and vegetables. There are, consequently, limited studies on aquatic plants, particularly those at land–sea interfaces, and their remediation potential. To address this research gap, the present study employed a bibliometric analysis and statistics from <em>Web of Science</em> (<em>WoS</em>) data from 2017 to 2023 to detail the interactions between MPs and plants. Because the study of aquatic plants was far less extensive than that of terrestrial plants, there was a need to draw analogies regarding how different plant species interact with various microplastics. This primarily pertains to the following aspects: direct and indirect effects of MPs on plants (including combined pollution), which included growth and development; nutrient intake; and physiological, biochemical, and genetic functions. The growth environments and physiological structures of aquatic plants and terrestrial plants differed, resulted in a greater potential for the root systems of aquatic plants to capture MPs. The impacts of MPs on the microbial processes in rhizospheres and phyllospheres in aquatic plants were also assessed because these plants are often used to remediate contaminated environments and wastewater treatment in the form of natural and constructed wetlands. Therefore, we proposed the potential of phytoremediation, particularly by aquatic plants, and future research directions related to MPs in this study.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112876"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748534","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}
引用次数: 0
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