Ecological Resources Research Articles

Fuzzy evaluation and obstacle factors of urban ecological health changes in the Wei River Basin, northwest China

BackgroundUrban ecological health is crucial for the long-term sustainable development of watershed. Accurately evaluating the health level of the ecological environment helps to develop reasonable strategies for ecological environment restoration and resource management. This paper constructed a comprehensive evaluation index system based on the Pressure-State-Response (PSR) framework and evaluated the ecological health of eleven administrative regions in the Wei River Basin (WRB), northwest China in 1980, 2000, and 2020 using an evaluation model established by fuzzy mathematics. Further, obstacle degrees were used to quantify the contribution of pressure, state, and response modules, as well as individual indicators to ecological health.ResultsThe comprehensive evaluation system constructed based on the PSR framework could effectively reflect the ecological health conditions of different regions in the WRB. During the study period, the ecological health went through a process of first deterioration and then improvement. By 2020, the ecological health of seven administrative regions reached healthy levels. The state module was the main obstacle module of the PSR framework to the ecological health of the most regions. The population density (P1), patch density of construction land (S5), comprehensive elasticity index (S8), soil erosion index (R1), and per capital GDP (R3) were the most crucial individual indicators affecting the ecological health. For different cities, the main obstacle factors varied. In economically developed cities, the limiting effect of P1 was more significant, while in economically underdeveloped cities, the limiting effect of R3 was stronger.ConclusionsIn response to the special natural environment and socio-economic conditions of arid and semi-arid areas in the WRB, an ecological health evaluation index system suitable for the characteristics of the basin was constructed. The results indicated that, to improve the levels of urban ecological health, it is necessary to restore the natural ecological environment and control population size while accelerating economic construction. Our results can provide scientific support for the ecological health evaluation and protection of the WRB and even the arid and semi-arid areas in northwest China.

Modeling Potential Habitats of Macrophytes in Small Lakes: A GIS and Remote Sensing-Based Approach

Macrophytes, which are foundational to freshwater ecosystems, face significant threats due to habitat degradation globally. Habitat suitability models are vital tools used to investigate the relationship between macrophytes and their environment. This study addresses a critical gap by developing a Geographic information system-based HSM tailored for small lakes, which are often overlooked in ecological studies. We included various abiotic predictors to model the potential macrophyte habitat for several small lakes in southern Bavaria (Germany). Key factors such as the distance to groundwater inflow, depth, availability of photosynthetically active radiation (PAR), and littoral slope were identified as significant predictors of macrophyte occurrence. Notably, the HSM integrates remote sensing-based data to derive PAR availability at the growing depths of the macrophytes using Sentinel-2 MSI data. Integration of an MSI-based time series of PAR availability enabled the introduction of a temporal component allowing monitoring and predicting changes in macrophyte habitats over time. The modeled habitat suitability score correlates highly (R = 0.908) with macrophyte occurrence. We see great promise in using habitat modeling for macrophytes as a tool for water management; in particular, the use of Sentinel-2 MSI data for habitat suitability modeling holds promise for advancing water management. By demonstrating the efficacy of GIS- and remote sensing-based HSM, we pave the way for future applications of this innovative approach in ecological conservation and resource management.

The Use of Big Data Analysis in Digital Empowerment of Sustainable Technological Innovation Management of Ecological Enterprises.

With the social economy's rapid progress and the popularization of environmental awareness, ecological enterprises have gradually become a crucial trend in the development of modern enterprises. This work intends to promote the development of ecological enterprises to a higher level. This work first analyzes the management mode of ecological enterprises in the context of big data in China. Then, it establishes various indicators to analyze the role of sustainable technological innovation in enterprise development and the impact of digital empowerment on enterprise development. Finally, this work takes China's manufacturing industry and ecological enterprises in Hubei Province as examples to summarize the digital empowerment of sustainable technological innovation management of ecological enterprises under the background of big data. The final result indicates that sustainable technological innovation significantly reduces ecological enterprises' resource consumption and waste emissions. Additionally, it has a significant positive effect on improving enterprise output value and economic benefits. The digital empowerment of enterprises has a significant driving effect on sustainable technological innovation, with a digital driving coefficient of 26. This work provides a feasible scheme for the specific application of big data analysis in the technology innovation management of ecological enterprises, including market demand analysis, environmental monitoring and governance, technology assessment and risk management. This work expounds the role of big data analysis technology in improving decision-making efficiency, optimizing resource allocation and enhancing the competitiveness of enterprises in the digital empowerment of ecological enterprises.

Wood Construction Practices of the Dong Ethnic Group (Guangxi Province, China)

This exploratory multiple-case study aims to analyse the ecological design of wooden houses in Dong villages (Guangxi province, China). Residential and public Dong houses were investigated from ecological and cultural perspectives. The results show that topography (i.e., building near the river in a mountainous area) is the main factor influencing the Dong building construction process. It also affects the building layout decisions. The life cycle assessment was applied to collect general information about the exterior and interior design of the Dong settlements. For this, a range of pictures and historical facts (e.g., demand for fire ponds and balconies, ornament usage, etc.) was analysed. The study suggests fir timber as a basic ecological resource for wooden house buildings. Yet, it is highly flammable and increases the fire risk. A brief discussion on the cultural heritage of the Dong people and its influence on their building system was presented. The present findings can be used in future eco-design projects as a brief guideline for creating a traditional-style ethnic wooden house.

Optimization of social-ecological fit in China's Sousa Chinensis protected areas based on modified Moran's I

Global social-ecological fit challenges require generalized methods that quantify the degree of human-nature matching to identify and optimize common problems in the world's coasts and oceans. Despite progress in depicting social-ecological interdependency, focus is less on measuring universally applicable and quantitatively comparable fit. By reviewing international marine protected areas' fit problems and transforming qualitative subgraphs to quantitative submatrices, the modified Moran's I can measure social-ecological fit in worldwide scenarios. As an example, results of China's 6 Sousa chinensis marine protected areas include: (1) Quantitative calculations aligned with qualitative motifs, indicating a gradient of fit degrees and motif types; (2) Fit degree was significant at the 95% confidence level after of 10,000 randomizations; (3) Fit degrees could be predicted with over 90% accuracy by common network attributes including betweenness centrality, clustering centrality, degree centrality and eigenvector centrality in 10,000 cross-validations; (4) The development pathway, stages and resilience of fit were presented. Fit problems and solutions were categorized into four groups based on the fit degrees. Governance insights for international practitioners include enhancing access to ecological resources through strengthening connections, avoiding overexploitation of resources via values creation, and following the adaptation-transformation pathway in co-management programs. Without any environmental restrictions and species specifications, the mathematically defined indicator of fit can be applied to other social-ecological systems to offer optimization strategies locally and internationally.

Spatial Network Structure and Shift Path Prediction of Ecological Welfare Performance in Chinese Cities—Evidence from 284 Cities

Ecological welfare performance (EWP) serves as a crucial measure for assessing the green development of a region. Exploring the spatial characteristics, network structure, and transfer paths of its specific stages is crucial for grasping an internal space’s EWP and optimizing urban ecological planning. This research employed a two-stage DEA model to assess the EWP of 284 Chinese cities from 2007 to 2022 and decompose it into an ecological–economic transition stage (L1) and an economic welfare transition stage (L2). Second, a social network analysis (SNA) was conducted to describe the EWP sub-stages’ network structure and construction mechanism. Finally, the transmission path process of EWP was revealed through Markov chains. It is found that (1) the overall trend of EWP is rising and then falling, with L2 as the critical constraint; (2) the network structure of the two stages is complex, dominated by industrial structure, urbanization, and healthcare level; and (3) ‘club integration’ constrains the transfer across EWP in the short term. Compared with L2, which has a lower probability of interstate transfer, L1 has a greater likelihood of transfer to a higher level. This paper provides suggestions for the optimal allocation of ecological resources in Chinese cities through the analysis of EWP.

Contemporary College Students' Cognitive Situation and Exploration in Green Wealth View---A Case Study of Zhejiang Yuexiu University

With the escalation of global environmental issues, college students, as the leading figures of the new era, play a crucial role in understanding and practicing the Green wealth view.This paper aims to explore college students' awareness of the green wealth view and analyze their roles and responsibilities in promoting the harmonious coexistence between environmental sustainability and economic prosperity. Firstly, the discussions on the green wealth view in the article are deficient,and that are mainly focus on ecological environment and resource conservation. Subsequently, through methods such as questionnaire surveys, inductive analysis, and literature research, the paper investigates college students' cognitive development regarding the green wealth view. It is found that college students have a serious lack in cognizing the concept of green wealth nowadays.Finally, the article summarizes the roles and responsibilities of college students in practicing the green wealth view, emphasizing the importance and urgency of nurturing college students with the right green wealth view. Faced with the challenges of global environmental issues, college students should embrace the mission entrusted by the times, actively participate in the creation and sharing of green wealth, and contribute to building an environmentally friendly society.

Low intra-canopy variability of floral traits in temperate woody plants

Floral traits represent a valuable yet underutilized resource for functional ecology. We aimed to examine the variability of six quantitative floral traits (carbon [C] and nitrogen [N] contents, C:N ratio, flower length and width, and dry biomass) among a randomly selected group of 79 temperate woody species at both interspecific and intraspecimen levels. We hypothesized that (1) flower traits are closely related to the evolutionary history of the species, resulting in a strong phylogenetic signal, and (2) flowers collected from the most and the least exposed to sunlight parts of the crown would not differ in trait values. We detected statistically significant phylogenetic signals for all six floral traits under study. We found significant differences between samples from the two light variants only for flower N content and C:N ratio. Given the substantial interspecific and the negligible intra-specimen variability observed, we are convinced that the incorporation of these studied traits, especially those related to flower size (i.e., dry biomass, length, and width), into research on flowering biology and ecology can significantly enrich our comprehension of the plant reproductive processes.

Properties of Binderless Insulating Boards Made from Canary Island Date Palm and Cork Particles

Agglomerated cork is a natural cork that has gone through a process of crushing and pressing using heat and binders. One of its applications is thermal insulator in construction. The design of these materials is becoming an essential part of building. The raw materials currently used to make insulators consume a large amount of energy, which has created the need to increase the use of renewable and ecological resources such as plant fibers to reduce the environmental problems generated. The objective of this study was to determine the different properties of experimental particleboard panels made from cork and Canary Island date palms without using any binder at minimum energy consumption. The produced cork–palm boards (density of 850 kg/m3, reached a MOR 8.83 N/mm2, MOE 794.5 N/mm2, and IB 0.38 N/mm2) are higher values than the traditional cork particleboards with UF made from cork. The thermal conductivity values obtained 0.069 to 0.096 W/m·K are higher than cork boards with UF. Ecological boards that can be used as rigid thermal insulators in the construction industry have been achieved to improve the mechanical properties of the traditional agglomerated cork.

Modelling impacts to water quality in salmonid-bearing waterways following the introduction of emerald ash borer in the Pacific Northwest, USA

Oregon ash (Fraxinus latifolia Benth.) wetlands and riparian forests are an important economic, cultural, and ecological resource in the Pacific Northwest, USA, and are threatened by the invasive insect, emerald ash borer (Agrilus planipennis Fairmmaire) (EAB). Following the discovery of EAB in Forest Grove, Oregon in June of 2022, it is predicted that EAB-induced ash mortality will alter vegetation communities and modify hydrology of wetlands and streams in the Pacific Northwest. Of primary concern is an increase in solar loading of already degraded waterways and wetlands that support Endangered Species Act-listed salmonids and other cold-water species following canopy dieback of Oregon ash. Our study, which began before the first detection of EAB on the West Coast, models potential impacts of EAB-mediated Oregon ash canopy loss to temperature-related water quality on two waterways in the vicinity of Portland, Oregon. Our results indicate a significant increase in solar loading with likely negative impacts to Endangered Species Act-listed salmonids, other aquatic wildlife, and associated habitat. We forecast greater impacts to these resources outside our study scope and include considerations for entities with water quality-related regulatory obligations.

THE ECOLOGICAL CONSCIOUSNESS MATRIX IN THE CONTEXT OF RUSSIAN SOCIETY RESOURCE SUSTAINABILITY: INTERDISCIPLINARY APPROACH

The article examines the problem of resource sustainability of the Russian society in conditions of accele-rating rate of technic evolution and anthropogenic pressure on the natural world of the Earth. In this regard, the authors analyze the prerequisites for the environmental consciousness formation as a signifi cant structure of social self-organization related with the factors of ontological security, trust and human responsibility for the biosphere preservation. Research is carried out within the framework of an ecosystem approach, which emphasizes that’s the combination of biosphere and social resources ensuring the sustainable development of the global world. Setting of social psychology to activate the norm is used in the analysis of the motivation factors of pro-ecological behavior. The empirical basis is the statistical material of sociological surveys conducted by the Russian Public Opinion Re-search Center. At present, ecological consciousness resource is associated with a set of beliefs and values that guide person’s perception of the natural environment within the human life world as a self-suffi cient system interacting with the structures from technological and social spheres. There are various models of person’s behavior motivated by a combination of social norms and personal attitudes that form the semantic matrix of personal environmental consciousness. On the other hand, citizens’ concern for the environment state is identifi ed as a leading factor in motivating pro-environmental behavior. Presented statistical data from VCIOM surveys show the level of public awareness about the global signifi cance of the life safety factor in their region and public involvement in changing the situation. In conclusion, the authors emphasize that the formation of contextual structures of consciousness based on ecosystem settings gives rise to new stereotypes of worldview, thought and behavior. Therefore, this type of consciousness represents a signifi cant resource for the sustainable development of Russian society in condition of technogenic civilization

Cold Hydraulic Extraction Optimization and Characterization of Balanites aegyptiaca and Ceiba pentandra Seed Oils

Non-edible vegetable oils have a huge potential for many industrial applications. Most of them are expressed by mechanical pressing, but data on the different operating conditions to achieve optimal extraction yields and high-quality oil are scarce. Hence, the objective of this study was to optimize key hydraulic extraction parameters at ambient temperature (25 °C) of <em>Balanites aegyptiaca</em> and <em>Ceiba pentandra</em> oils by increasing the oil recovery. Optimal holding time, applied pressure, compression speed, and press cage charge were determined for whole and crushed oleaginous material. The results indicate that the <em>B.aegyptiaca </em>kernels and <em>C.pentandra</em> seeds contained 2.7 and 5.7% moisture, as well as 46.3 and 26.2% fat, respectively. Under the optimal operating conditions, the oil recovery (wt.%. d.b.) from whole (crushed) material was 73.4 (69.8) <em>B.aegyptiaca </em>kernels and 38.2 (41.2) <em>C.pentandra</em> seeds.<strong> </strong>The extracted oils have a high content of unsaturated fatty acids including of about 74 wt.% for <em>B. aegyptiaca</em> and 69 wt.% for <em>C.pentandra</em>. They were particularly rich in linoleic ω-6 acid, 45.32 and 38.77 wt.%, respectively. The chemical characteristics of cold-extracted <em>B. aegyptiaca</em> and <em>C.pentandra</em> oils were 10 and 20 ppm phosphorus, 2.8 and 3.5 ppm iron, 0.0 ppm copper, 0.06 and 0.1% water-volatile matter, respectively. These valuable material properties make the <em>B.aegyptiaca</em> and <em>C.pentandra</em> oils an ecological and renewable resource for multipurpose applications.

Problem Analysis and Effective Strategies of Ecological Civilization Education for Undergraduates in the New Age

The ecological civilization in the new age is one important aspect for undergraduates. We must enhance the concept of their civilization and improve the quality of civilization. Carrying out ecological civilization education in colleges and universities has a practical significance for enriching the contents of ideological and political education to realize their all-round development. Nowadays, some undergraduates lack awareness of ecological civilization and ignore its importance. For this reason, undergraduates need to pay attention to ecological civilization and improve their own ecological civilization literacy to promote the all-round development in qualities in the new age. This paper mainly analyzes the current problems in undergraduates’ ecological civilization education and explores effective strategies to solve the current problems in undergraduates’ ecological civilization education. The strategies include integrating ecological civilization resources, innovating methods of ecological civilization, strengthening ecological educator team construction, embodying ecological culture in campus construction and creating the atmosphere, emphasizing innovative practices for ecological civilization, strengthening publicity of social-ecological civilization, and attaching importance to family education of ecological civilization.

Establishment and optimization of urban ecological network based on ecological regulation services aiming at stability and connectivity

Establishing an urban ecological network is a means to improve the ecological environment and enhance sustainable urban development amidst rapid urbanization. Based on the demand of eco-city, morphological spatial pattern analysis (MSPA), ecological regulation services value (ERSV), and landscape connectivity have been combined to identify ecological resources with high connectivity and ecological benefits in this study. Using the Minimum Cumulative Resistance (MCR) model, ecological corridors have been constructed and ecological critical nodes have been identified. In addition, the urban ecological network has then been optimized from the overall layout and local key nodes based on the circuit theory to balance the ecological livability and species diversity in the eco-city. The main conclusions could be demonstrated as follows: (1) 76.45% of the high ecological regulation service value areas have been identified as core areas. (2) The distribution of ecological corridors has been found uneven with significant disparities (3) The connectivity indices, especially the line point rate (β) index, have increased by 21.66%, while the robustness has increased by 75.44%. Overall, the combined methods have been used to establish and optimize the ecological network within the limited space to balance the ecological livability and biodiversity. The results of this study could provide a scientific reference for the optimization of urban ecological space and promote sustainable development in the eco-city.

Spatio-temporal variation in water quality due to the anthropogenic impact in Rudrasagar Lake, a Ramsar site in India.

Rudrasagar Lake, a vital habitat for diverse flora and fauna, supports over 2000 households to sustain their daily livelihoods. The current study attempts to examine the impact of human activities on spatio-temporal variation in the water quality of the study area. The study integrates extensive field surveys, sample processing, and statistical analysis to assess the recent status of wetland health. Latin Square Matrix (LSM) was employed to select the sampling sites while the Inverse Distance Weighting (IDW) interpolation technique was used for spatial variation mapping. Modified Weighted Arithmetic Water Quality Index (MWAWQI) and Comprehensive Pollution Index (CPI) were utilized for assessing seasonal variation water quality and pollution loads, respectively. The results showed that dissolved oxygen (DO) was strongly influenced by the tributaries, and recreational activities have substantially influenced the highest concentrations of biochemical oxygen demand (BOD), and total suspended solids (TSS). The central portion of the lake is particularly susceptible to pollution from extensive fishing and recreational activities while peripheral sites are strongly influenced by agricultural run-offs, seepages from brick industries, and municipal wastes characterized by high concentrations of pH, total hardness (TH), oxidation-reduction potential (ORP). The findings reveal remarkable spatio-temporal fluctuations and highlight the areas within the lake susceptible to anthropogenic activities. The study proposed a sustainable management model to ameliorate anthropogenic threats. Moreover, the study contributes to the scientific understanding of the challenges and ensures the long-term viability of wetland health as a vital ecological and socio-economic resource.

Vegetation resilience assessment and its climatic driving factors: Evidence from surface coal mines in northern China

Vegetation resilience is a key concept for understanding ecosystem responses to disturbances and is essential for maintaining ecosystem sustainability. However, assessing vegetation resilience remains challenging, especially for areas with significant disturbances and ecological restoration, such as surface coal mine ecosystems. Vegetation resilience assessment requires a combination of disturbance magnitude, recovery magnitude, and recovery time. In this study, we propose a vegetation resilience assessment method by integrating disturbance magnitude, recovery magnitude and recovery time. Forty-six surface coal mines in northern China were analysed as the study areas. A geographical detector model was used to explore the influence of climatic factors on vegetation resilience. The results indicated that the vegetation resilience curves included three shapes, inverted U-shaped, S-shaped, and monotonically decreasing, and the different disturbance-recovery relationships of the curves indicated that natural and social factors jointly changed the ecological restoration process. The vegetation resilience of the 46 surface coal mines varies widely, ranging from 0.87 to 7.22, showing a spatial decreasing trend from east to west. The explanatory power of different climatic factors on vegetation resilience by indirectly affecting hydrothermal conditions varies, with the effect of atmospheric pressure being the most significant and the superposition of the two climatic factors enhancing the effect on vegetation resilience. This study enriches the understanding of vegetation resilience assessment and provides important information to guide the differentiation of ecological restoration and resource development of surface coal mines in different regions.

Palaeoenvironmental changes since the last deglaciation recorded at Moon Lake on the Bashang Plateau, northern China: implications for the future sustainability of regional forests

Warming-induced ecological degradation and the continuous shrinking of lakes have been observed in the Bashang Plateau, northern China, leading to the recent demise of cultivated forests. The objective of this paper is to investigate the long-term palaeoenvironmental context of these recent changes through a multi-proxy sediment core analysis at Moon Lake to better understand forest sustainability in the future. The core chronology was determined based on seven accelerator mass spectrometry (AMS) 14C dates and covers the period from 14,000 yr BP to the present. The Moon Lake record reveals four climate stages: (1) a warm and humid period followed by a cold and arid phase corresponding to the Allerod warm period and the Younger Dryas stadial (14,000 to 11,700 yr BP), (2) a relatively warm and humid period (11,700 to 7400 yr BP), (3) a period of fluctuating dry-wet-dry changes (7400 to 4000 yr BP), and (4) a relatively arid period (4000 yr BP to present). Since 1800 yr BP, drought conditions have intensified, and significant warming and drying trends have been observed over the past 500 yr BP. This consistent warming and drying trend over the past few centuries indicate that large-scale afforestation is no longer sustainable in the Bashang region. Coupled with instrumental records of soil drying and water scarcity, our Holocene records of climate change are useful for ecological resource management and sustainable forestry planning in the region.

Sediment dynamic on the tidal flat sheltered by artificial engineering: A case study on eddies

Tidal flats are important ecological and terrestrial resources. With the increasing development of coastal engineering projects, it is important to understand the dynamic response of tidal flats to human activities. Hence, the time series of wave, current, and suspended sediment during the spring tide from April 30, 2013 to May 1, 2013 were recorded by three tripod observation systems placed on the upper, middle, and lower parts of the tidal flats south of a constructed harbor in Wanggang, Jiangsu, China. The results showed that eddies formed south of the reclamations during flood tides. The directions of local tidal currents changed from their original southwest to the present northwest, and the ebb tides also changed but continued to flow northeast. The sediment transport process was basically consistent with the currents. The total net sediment fluxes during the tidal cycle (mean values of two tides) on the mudflat were two orders of magnitude larger than those on the salt marsh. Most of the sediments on both the mudflat and the salt marsh were transported northward alongshore, and a small portion of the sediments was transported seaward on the mudflat but shoreward on the salt marsh. The portion of the tidal flat with an elevation >1 m was wide in the north but narrow in the south, as determined by analysis of LiDAR elevation data, which coincided with the local sediment dynamics. The sediments were transported northward from southern deep waters during flood tides, which assisted in the expansion of the tidal flats in the north. This phenomenon reflected unique local sediment dynamics that were highly constrained by reclamations and Dafeng Harbor in the north as well as seawalls in the west. The tidal flat influenced by eddies can extend up to approximately 10 km south of the Dafeng Harbor. This case study has significant implications for the protection of tidal flats and the construction of coastal artificial engineering projects.

Elevation Shapes Soil Microbial Diversity and Carbon Cycling in Platycladus orientalis Plantations

Diversified soil microbiomes are the key drivers of carbon fixation and plant residue decomposition in forest ecosystems. Revealing the elevation patterns of soil microbial carbon cycling in forests is essential for utilization of forest ecological resources. However, the soil microbial diversity and carbon cycle processes in Platycladus orientalis plantations across different elevations are still unclear. Here, we established a gradient with three elevations (118 m, 300 m, and 505 m) on the Beijing Ming Dynasty Tombs Forest Farm, which is located in Changping District, Beijing. The metagenomics method was applied to study the soil microbiome, with a special focus on the carbon cycle process at each elevation. We found the diversity and composition of the soil microbiomes significantly varied across the elevation gradients. The structure of bacteria and archaea was mainly driven by soil total potassium, pH and NH4+, but the eukaryota had no significant relationship with the environmental factors. The relative abundance of genes involved in microbial carbon fixation and decomposition of organic carbon were also significantly impacted by elevation, with the former showing increasing, u-shaped, or hump trends with increasing elevation, but the latter only showing hump trends. The rTCA cycle and 3-hydroxypropionate pathway were the dominant carbon fixation pathways in the Platycladus orientalis plantations. The elevation gradient shaped the microbial decomposition of plant-derived organic carbon by changing soil properties and, furthermore, led to soil organic carbon stock losses. These findings increase our understanding of soil microbial diversity and the carbon cycle across different elevations and provide a theoretical basis for the utilization of forest ecological resources to promote carbon sequestration.

The first mitochondrial genome of Meroplius fukuharai (Diptera: Sepsidae)

Meroplius fukuharai is an important sanitary and ecological resource insect. We sequenced and annotated the mitogenome of Meroplius fukuharai which is the first representative of the genus Meroplius with nearly complete mitochondrial data. This mitogenome is 14,803 bp long, which consists of 22 transfer RNA genes, 13 protein-coding genes (PCGs), and two ribosomal RNA genes. All genes have a conservational arrangement with other published species of Sepsidae. Our results also supported the monophyly of Sepsidae, and the genus Meroplius is more closely related to genus Sepsis, Microsepsis, and Archisepsis.