Resource Distribution Patterns Research Articles

Seasonal Distribution of Key Small-Sized Fish in the South Inshore of Zhejiang, China

Small-sized fish are a vital food source for large predatory commercial fish and play a key role in marine food webs, bridging lower and higher trophic levels. They are indispensable in maintaining the energy flow and material cycling within aquatic ecosystems. This study utilized bottom-trawl survey data from 2017 to 2020 along the south inshore of Zhejiang, China, complemented by concurrent environmental data, to examine the influence of environmental factors on the resource density and seasonal distribution patterns of four dominant small-sized fish species. The research findings indicated that SSH (sea surface height) and Chl (chlorophyll-a concentration) emerged as the key environmental factors influencing resource densities, with all four species exhibiting similar preferences toward these variables. However, significant disparities were observed in their preferences for SST (sea surface temperature), SSS (sea surface salinity), and DO (dissolved oxygen). The various species’ resource density and distribution patterns underwent significant seasonal variations. Additionally, the seasons and regions with the highest resource densities consistently aligned, occurring predominantly in autumn within the northern waters of the study area. This research further elucidated the environmental predilections and seasonal spatial distribution traits of small-sized fish in the south inshore of Zhejiang, an important feeding ground for economic fish species in the East China Sea. This provides scientific backing for forecasting alterations in coastal fishery resources under environmental and climate change scenarios and supports ecosystem-based fisheries management strategies.

Herpetofauna Diversity And Distribution Pattern Of Selected Ecological Sites Of Girei Local Government Area, Adamawa State – Nigeria

Background: This study aimed at understanding the diversity and distribution of herpetofauna resources with the specific objectives to: determine the relative abundance of herpetofauna resources; ascertain the distribution pattern of herpetofauna resources in relation to the ecological sites; and determine herpetofauna resource diversity in Girei Local Government Area of Adamawa State - Nigeria. Materials and Methods: The study area was divided into seven ecological sites: home area, open land area, farmland area, rocky area, grassland area, shrubby area and woodland area. Direct observation method involving an intensive search for the presence of herpetofauna resources was employed for the census. Cluster analysis was used to determine the pattern of distribution of herpetofauna resources while diversity indices were calculated using Simpson’s diversity index. Results: The results obtained showed that herpetofauna resources belonging to seven families were inventoried: Bufonidae, Ranidae, Agamidae, Lacertidae, Scincidae, Ophidae and Chamaeleonidae. The single –linkage cluster analysis showed only one cluster, indicating similar herpetofauna resources distribution in all the ecological sites. The Simpson’s diversity index of the herpetofauna resources was 0.2870. The results therefore suggest high diversity of herpetofauna resources, irrespective of ecological sites in the study area. It was concluded that there should be creation of herpetofauna refuge by encouraging people to establish hedgerows, fencerows, wood piles and preserve forest thickets between farmlands in the study area

Characterization of lead and zinc in catchment sediments and their relationship with lead‑zinc mineralization from the Sino–Mongolian border region

The Sino–Mongolian border region is one of the most important metallogenic belts in Central Asia and is an important source of Au, Ag, Pb, Zn, Sn, Cu, and rare metals in southern Mongolia and northern China. The variations in Pb and Zn concentrations and their spatial distribution in the region can indirectly reflect the distribution pattern of mineral resources in the region and provide reference data for the exploration of elements associated with Pb and Zn (e.g., Au, Ag, Cu, and Mn). Moreover, Pb and Zn data are valuable in environmental research because the elements are persistent and potentially toxic heavy metals. Although numerous geological and geochemical surveys of PbZn resources have been conducted in China, the Sino–Mongolian border region remains under studied. Therefore, in this study, we performed an integrated and comprehensive analytical study of single-element and combined PbZn geochemical anomalies. A total of 10,452 catchment sediment samples were collected. Pb concentrations in the samples ranged from 1.90 to 494 mg/kg, while Zn concentrations ranged from 3.00 to 1940 mg/kg. Of these, the median and mean values for Pb were 19.4 mg/kg and 55.0 mg/kg, respectively, while the median and mean values for Zn were 19.9 mg/kg and 58.0 mg/kg, respectively. To characterize the concentration and spatial distribution of Pb and Zn in the study area, we conducted an exhaustive study across several dimensions, considering the geological setting, mineral development, and utilization, and explored the key factors affecting these characteristics. A total of 53 Pb, Zn geochemical anomalies (geochemical province/domain, Pb > 23.1 mg/kg and Zn > 75 mg/kg, > Q85%), including 17 PbZn combined geochemical anomalies, were identified in this study. The PbZn combined geochemical anomalies were mainly concentrated in the Altai region in the west and the Daxinganling region in the east of the study area and are closely related to the distribution of known PbZn deposits. The high-quality geochemical data produced during this study could be an important reference for future mineral exploration work and environmental change studies in the Sino–Mongolian border region.

Discourse Analysis of COP28 News Reports from the Perspective of Attitude in Appraisal Theory

Conference of the Parties is the world’s largest and most important annual climate-related conference. Taking the attitude system of Martin’s Appraisal Theory as the theoretical framework, this study collects news reports on the 28th UN Climate Change Conference of the Parties from China Daily as the corpus. Through qualitative and quantitative analysis of the corpus, this study explores the distribution pattern and realization of attitudinal resources in these news reports, aiming to reveal the attitude and stance of China Daily towards COP28. According to the study, attitudinal resources consist mostly of appreciation resources, which comprise over half of the total. Affect and judgement resources follow, with a greater proportion of positive than negative resources. Additionally, China Daily frequently adopts a positive viewpoint regarding COP28 through the use of attitudinal materials. This research aids in the efficient comprehension and expression of attitudes and positions in discourses.

Internationalization of higher education in Central Asia: a systematic review

ABSTRACT Despite the growing literature on higher education internationalization in Central Asia, such literature remains unexamined for its criticality. Our systematic integrative literature review helps address this lacuna. The article utilizes critical internationalization perspectives to examine the extent to which the literature on internationalization in the region addresses the critical questions currently dominating the internationalization discourse globally. We analysed 56 peer-reviewed journal articles published in English between 2012 and 2022 to address the following themes: (1) internationalization as Westernization, (2) internationalization and the modernization of the university, (3) internationalization equals Englishization and (4) internationalization and the recreation of unequal relations. We assert that the published work does not promote the reimagination of dominant patterns of relationship, representation and resource distribution. By providing a systematic review, we hope to have helped academics, researchers, students, administrators and policymakers reflect upon and reimagine internationalization practice.

Causes and Ways of Relieving Parents' Anxiety Under the Double Reduction Policy

With the continuous implementation of the nine-year compulsory education policy, parents are increasingly anxious about their children's education. According to the analysis of various existing situations, parents' anxiety is still in a very serious degree, and it is urgent to understand and analyze parents' anxiety. On this basis, through the research review and analysis of different literatures, this paper makes an in-depth analysis, clarifies the internal logic of parental anxiety, and understands the different internal and external factors that lead to parental anxiety. Internal factors are due to parents' worries about their children's education, their worries about their children's future and the success of their education. Not only that, parents' comparison psychology, fear of policy uncertainty, as well as parents' own age and cultural background and other factors concentrate on the internal factors of parents' anxiety. From the external point of view, with the actual situation has been changing the education policy, the current social tension employment situation, the influence of traditional concepts and social public opinion, and the uneven distribution pattern of education resources have further deepened the anxiety of parents. In addition, the reform form of cram school is not optimistic, the influence of parents' education of children around them and the unsatisfactory home-school cooperation have also made parents' anxiety gradually become diversified and complicated. Parents need to change their concept of education, regain confidence in their children's education, change the way of education and use advanced network technology to build home-school cooperation.

Validation of FY-4A/AGRI LST and High Temporal–Spatial Resolution Analysis of Surface Heat Resources in Hunan Province, Central China

Land surface temperature (LST) is a crucial parameter in climate and ecology, exerting significant influence on meteorological conditions, ecosystems, and human life. LST data sources are diverse, with remote sensing being the prevailing means of acquisition. FY-4A/AGRI offers high-quality LST products for East Asia. We conducted a comprehensive evaluation and refined analysis of surface heat resources in Hunan Province, central China, over a two-year period using the 4 km/1 h resolution product in this study. The results demonstrate that the FY-4A LST product effectively captures surface temperature (R = 0.893), albeit with a relatively high error level (Bias = −6.295 °C; RMSE = 8.58 °C), particularly in capturing high LST values. The performance of this product is superior in the eastern flat terrain area of Hunan Province compared to its performance in the western mountainous region due to environmental conditions causing systematic errors that contribute to instability in detection deviation for this product. Surface heat resources are more abundant in eastern Hunan Province than in mountainous areas located west and southwardly, and the detailed distribution of them at finer scales is mainly influenced by terrain and climate conditions. There is no obvious seasonal difference in the distribution of heat resources except in winter, and rapid urbanization within Chang–Zhu–Tan urban agglomeration over two years has significantly altered the spatial distribution pattern of surface heat resources across Hunan Province. These findings provide a quantitative baseline for assessing FY-4A satellite’s detection capability while serving as a reference for further application of its LST products and establishing foundations for divisional classification and utilization strategies pertaining to surface heat resources within Hunan Province.

Discourse Analysis of “Fukushima Nuclear-contaminated Water” News Reports from the Perspective of Attitude in Appraisal Theory

The Japanese government’s plan to discharge contaminated radioactive wastewater from Fukushima Daiichi Nuclear Power Plant into the sea has sparked widespread concerns both domestically and internationally. Taking the attitude system of Martin’s Appraisal Theory as the theoretical framework, this study collects news reports on the Fukushima nuclear-contaminated water discharge plan from China Daily as the corpus. Through qualitative and quantitative analysis of the corpus, this study explores the distribution pattern and realization of attitudinal resources in these news reports, aiming to reveal the attitude and stance of China Daily towards the Japan’s plan. The study shows that appreciation resources rank top, accounting for more than half of the attitudinal resources, followed by affect resources and judgement resources, and among them, negative resources overweigh positive resources. Besides, through the use of attitudinal resources, China Daily tends to adopt a negative and concerned attitude towards Fukushima nuclear wastewater discharge plan. This study helps to effectively understand and express attitudes and stances in discourses.

Fission-fusion dynamics in sheep: the influence of resource distribution and temporal activity patterns.

Fission-fusion events, i.e. changes to the size and composition of animal social groups, are a mechanism to adjust the social environment in response to short-term changes in the cost-benefit ratio of group living. Furthermore, the time and location of fission-fusion events provide insight into the underlying drivers of these dynamics. Here, we describe a method for identifying group membership over time and for extracting fission-fusion events from animal tracking data. We applied this method to high-resolution GPS data of free-ranging sheep (Ovis aries). Group size was highest during times when sheep typically rest (midday and at night), and when anti-predator benefits of grouping are high while costs of competition are low. Consistent with this, fission and fusion frequencies were highest during early morning and late evening, suggesting that social restructuring occurs during periods of high activity. However, fission and fusion events were not more frequent near food patches and water resources when adjusted for overall space use. This suggests a limited role of resource competition. Our results elucidate the dynamics of grouping in response to social and ecological drivers, and we provide a tool for investigating these dynamics in other species.

Multi-scale near-long-range flow measurement and analysis of virtual water in China based on multi-regional input-output model and machine learning

At present, China is facing a relatively serious water security problem, and virtual water trade is an important means to alleviate the shortage of water resources. It is of great practical significance for China to analysis of the multi-scale near-long-distance flow of virtual water between regions. In this paper, the multi-regional input-output model was used to measure the virtual water near-long-range transfer of 17 departments in eight regions in 2012 and 2017 in China. The measured results are further discussed in the context of K-means and structural decomposition analysis (SDA) methods. The results show that from 2012 to 2017, the overall trend of interregional virtual water flow and import and export volume of various regions and departments in China showed a downward trend, and there were significant differences in inflow, outflow, and distribution. In 17 sectors, the agricultural sector has a much higher virtual water flow than other sectors, particularly in the north-west and central regions. In addition, the food and tobacco industry and construction industries in most regions also have the characteristics of high outflows. This paper argues that China should Fully exploit the effect of industrial structure on the suppression of virtual water rise. At the same time, it is necessary to improve the virtual water trade pattern, especially the virtual water trade pattern of the agricultural sector, and then gradually optimize the distribution pattern of regional water resources in China.

Spatial Patterns Characteristics and Influencing Factors of Cultural Resources in the Yellow River National Cultural Park, China

This paper aims to analyze the spatial patterns characteristics of cultural resources within the Yellow River National Cultural Park in China. Therefore, this paper plans to use Arcgis-10.8 software to describe the spatial patterns of cultural resources within the Yellow River National Cultural Park and use Geographic detector tools to study the influence of physical geography and social and human factors on the spatial distribution pattern of cultural resources. The results indicate that: (1) the cultural resources in the Yellow River National show a spatial distribution pattern that is dense in the east and sparse in the west; (2) the spatial patterns of cultural resources within the planning scope of the Yellow River National Cultural Park are clustered, and multiple high-density areas such as south of the Shanxi province, north of the North Henan and Middle Shaanxi have formed, and the area covered by intangible cultural heritage is larger than that of tangible cultural heritage; (3) cultural resources show a “triangular” spatial distribution pattern, intangible cultural heritage shows an “N” spatial distribution pattern, and tangible cultural heritage shows an inverted “V” spatial distribution structure; (4) the influence of a single factor on the spatial distribution pattern of cultural resources is limited. The interaction of multiple factors can significantly improve explanation, and the landscape layout of cultural resources is the main factor affecting the spatial patterns of cultural resources.

Blue Economy, Blue Growth, Social Equity and Small-scale Fisheries: A Global and National Level Review

One of the most promising economic arenas in the coming decades is the ocean and there are currently numerous initiatives to the ‘blue economy’ discourse that revolves around the argument that small-scale fishers’ livelihoods require greater attention. To synthesize current scientific knowledge and address prevailing research gaps surrounding this discourse, I conduct a scoping review of global literature on the blue economy, blue growth, social equity, and Small-Scale Fisheries (SSF) analyse different international policy papers and national-level blue economy plans. To explore the need for further research, this review focuses on how different aspects of the blue economy risks lead to inequity in the pursuit of ocean sustainability. Based on the initial content analysis, I identify evidence for undermining social equity and justice related to the ocean and find that social equity is often overlooked in national-level blue economy and blue growth initiatives. This overlooking leads to or accelerates processes of coastal and ocean grabbing, displacement, dispossession, and exclusion which strongly impact the livelihoods of marginalized coastal communities, particularly, small-scale fishers in various parts of the world. The collected evidence suggests that there is a missing link between international policy deliberations and national-level implementation plans in the blue economy context. Numerous studies claim that critical re-thinking of policies is required to ensure the sustainability of blue economy trajectories. Unchecked economic growth in the ocean as in other realms can reinforce inequities and unjust and inequitable resource distribution patterns. To pre-empt, mitigate, and resolve likely conflicts, deeper insights are needed to address the impacts of the blue economy and blue growth on coastal livelihoods. I suggest investigating the causes of conflict and further research on how governance responds to sustain small-scale fisheries while embracing the blue economy and blue growth agendas.

Spatial-Temporal Distribution Pattern and Tourism Utilization Potential of Intangible Cultural Heritage Resources in the Yellow River Basin

In this study, the spatial-temporal distribution pattern and tourism utilization potential of national ICH are analyzed based on GIS technology in the Yellow River Basin. The results show that: (1) The national ICH of the Yellow River Basin is distributed in an aggregated spatial pattern with the characteristic of “one belt and two cores”. The cities in Shanxi, Henan and Shandong provinces constitute the high-density and sub-high-density continuous belts. Haidong and Chengdu are the high-density and sub-high-density core areas, respectively. (2) The five batches of national ICH present a temporal distribution pattern of “Northeast to Southwest”. The distribution scope of national ICH in medium and high-density areas expands gradually and finally tends to be balanced. (3) For the single-factor evaluation of tourism utilization potential, there is an obvious gap in the evaluation grade among the cities. However, for the comprehensive evaluation of tourism utilization potential, there are 72 cities with an evaluation grade of three or above, accounting for 63%. This indicates that the tourism utilization potential of the national ICH in this basin is great. (4) The national ICH tourism in this basin can be developed from two aspects: regional differential development and regional linkage development.

What can geographers do for shrinking geographies?

For parts of the sparsely populated areas, the trends of globalisation, urbanisation and deindustrialisation constitute difficult circumstances. Population decline, escalating dependency ratios, lack of human and financial resources, and diminishing commercial and public services form part of lived experience in many of these areas. This paper discusses what geographers can do for these territories. The paper suggests that geographers can aid in understanding and demonstrating (a) how resources have been distributed in space over time and (b) why patterns of resource distribution take the shape they do. Geographers can also illuminate (c) what it means to live, work, and operate in shrinking, rural territories. Geographers could also (d) make implicit geographical imaginations explicit, (e) elucidate how shrinkage is dealt with by various policy actors, and (f) point to alternative policy directions. The paper also suggests that geographers in the Nordic countries could enrich an international research field of studies of shrinkage by (g) providing case studies or comparative studies from a Nordic context.

Change Analysis of Karst Landforms, Hydrogeological Conditions and Effects of Tunnel Excavation on Groundwater Environment in Three Topography Grades in China

One-third of the Earth in China is formed by Karst topography, which exposes different Karst landforms in three topography grades from southeast to northwest, corresponding to below several hundred meters for the first grade, one to two thousand meters for the second grade, and more than 4000 m for the in Qinghai-Tibet Plateau. Through the hydrochemical and D-18O stable isotopes of 64 water samples collected along two railway lines and the topography fractal characteristics of three typical Karst areas in different topography grades, the changes in Karst development degree, changes in groundwater activities, and the influence of tunnel excavation effects on groundwater environment were analyzed. The results indicated that: (1) the Karst development degree and the influence of Karst tunnel excavation on the groundwater environment are somehow similar in the first and second grades, while there are significant differences between the slopes area from second to third grade and the third grade area. (2) In detail, the relatively weaker Karst development degree and flow seeping in the second grade relatively weaken the influences of tunnel excavation, including the distribution pattern of water resources, the groundwater flow field, and water circulation, while the tunnel elevation has little room to rise. (3) There are many large faults in the north-southward direction in the third topography grade, and the transportation lines in the eastern-western direction will inevitably encounter them. In the intersection area, the tunnel excavation has great effects on the groundwater environment. (4) The lighter hydrogen and oxygen isotopes are enriched in Karst water from the first grade to the third grade, indicating that the recharge source of Karst water presents obvious elevation effect.

Equity versus efficiency: A spatial analysis of residential aged care resources in Beijing

Based on data collected from residential aged care facility websites and the Sixth China National Population Census, this paper studies the spatial pattern of Beijing's aged care resources in the framework of spatial location of public facilities. The results show that at the township/street level, the overall distribution of public aged care resources is relatively balanced, showing positive spatial autocorrelation, while private aged care resources show partially negative spatial autocorrelation. Spatial regression analysis indicates that the dispersed and clustered distribution of private aged care resources are more sensitive to the density of local elderly population, although the distribution of two types of resources is affected by the absolute number of service objects in respective administrative areas. In short, the spatial distribution pattern of public and private aged care resources reflects the contrast between efficiency and equity in providing aging care in China, a fact that is shaped by both administrative and market forces.

Spatial distribution pattern of embodied natural resources use in China and its relationship with socioeconomic development: From an exergetic perspective

China is facing severe resource crisis, especially under the great regional disparities of resource endowment and economic development. Clarifying spatial distribution pattern of natural resources in China is critical for sustainable resource management. However, a unified assessment framework at regional level is still lacking. This study establishes a comprehensive framework by combining exergy accounting and multi-region input-output analysis to investigate embodied natural resources (ENR) utilization at regional level from 2012 to 2017. Tapio analysis and Logarithmic Mean Divisia Index are applied to reveal decoupling states and identify driving factors. The results show that the eastern regions required more ENR than the western regions. ENR per unit GDP in the northern regions was larger than that in the southern regions, while ENR per capita in the middle Yellow River and the eastern regions was larger than the western regions. ENR demands in most regions decoupled from economic development during 2012–2017. Fixed investment intensity and economic development were the major contributors of ENR growth, while natural resources intensity and R&D efficiency were the major negative factors. Based on such results, this study provides substantial policy recommendations for different regions to alleviate their resource crises.

Discussion of the Distribution Pattern and Driving Factors of 2 Large Old Tree Resources in Beijing

Known as “living fossils”, large old trees play an important role in ecology, landscape, and culture and are an important part of ecosystems and human settlements. The aim of this paper is to provide suggestions for the protection of urban large old tree resources and the selection of large old tree backup resources. First, we conducted a statistical analysis on the composition, distribution, and important values of large old tree species in Beijing and used Downtrend correspondence analysis (DCA) to analyze the composition of different types of habitat tree species. Second, we created a 3 km × 3 km grid within the administrative scope of Beijing, extracted the number of large old trees and tree species richness in the grid, and used geographic detectors to determine the driving factors of the spatial distribution of large old trees, as well as tree species richness differences and their interactions. A total of 40,590 large old trees in Beijing were found, belonging to 72 species, 52 genera, and 29 families. Platycladus orientalis (L.) Franco was the dominant tree species, with an importance value of 0.51. Among the different habitats, the large old trees were found in parks and temples, and the greatest tree species number of old trees were found in communities and the countryside; meanwhile, microgreen spaces had the lowest number of trees and tree species. The distribution of large old trees and tree species was mainly concentrated in the center of the city and the northwest. The distribution pattern of large old tree resources in Beijing is affected by the interaction of various factors. Social factors were the dominant in the distribution of large old tree resources in Beijing. The spatial distribution of large old trees was mainly affected by the scenic resort and historic site (SRHS), and the SRHS and gross domestic product (GDP) level were the most important factors influencing the richness of large old tree species. In addition, the functional value and characteristics of tree species determined the distribution of large old tree habitats. Therefore, the protection of large old tree resources requires developing scientific management and planning by managers, increasing investment in management and protection, and strengthening ecological culture publicity.

Energy‐based step selection analysis: Modelling the energetic drivers of animal movement and habitat use

The energetic gains from foraging and costs of movement are expected to be key drivers of animal decision-making, as their balance is a large determinant of body condition and survival. This fundamental perspective is often missing from habitat selection studies, which mainly describe correlations between space use and environmental features, rather than the mechanisms behind these correlations. To address this gap, we present a novel parameterisation of step selection functions (SSFs), that we term the energy selection function (ESF). In this model, the likelihood of an animal selecting a movement step depends directly on the corresponding energetic gains and costs, and we can therefore assess how moving animals choose habitat based on energetic considerations. The ESF retains the mathematical convenience and practicality of other SSFs and can be quickly fitted using standard software. In this article, we outline a workflow, from data gathering to statistical analysis, and use a case study of polar bears Ursus maritimus to demonstrate application of the model. We explain how defining gains and costs at the scale of the movement step allows us to include information about resource distribution, landscape resistance and movement patterns. We further demonstrate this process with a case study of polar bears and show how the parameters can be interpreted in terms of selection for energetic gains and against energetic costs. The ESF is a flexible framework that combines the energetic consequences of both movement and resource selection, thus incorporating a key mechanism into habitat selection analysis. Further, because it is based on familiar habitat selection models, the ESF is widely applicable to any study system where energetic gains and costs can be derived, and has immense potential for methodological extensions.

藏东木本植物群落功能性状分布与环境的关系

PDF HTML阅读 XML下载 导出引用 引用提醒 藏东木本植物群落功能性状分布与环境的关系 DOI: 10.5846/stxb202205071265 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 科技部第二次青藏高原综合科学考察研究（2019QZKK0301）；国家自然科学基金（31860123，31560153） Functional traits of woody plants along the environmental gradients in eastern Tibet Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:研究植物群落功能性状间的相关关系及其对环境变化的响应，能够有效揭示植物功能性状的权衡模式及其对环境的适应策略。藏东昌都地区位于横断山脉西北部，复杂气候地貌孕育了丰富的植物资源，是青藏高原森林灌丛生态系统主要组分和国际生物多样性保护的热点地区。以藏东森林灌丛群落优势木本植物为研究对象，在大量野外调查基础上，采用相关分析、主成分分析、线性回归和方差分析等方法，研究了该区域植物功能性状间的相关关系、功能性状对环境变量的响应规律以及功能性状的变异来源。结果表明：（1）藏东木本植物表现出适应高寒环境的性状权衡模式，即：比叶面积、叶体积较小而叶干物质含量较大，叶磷含量和叶钾含量协同变化；（2）海拔和气候变量共同驱动着藏东木本植物功能性状的变化，并且藏东木本植物倾向于采取"高投入-慢回报"提高御寒能力的保守型适应策略；（3）海拔是影响藏东植物功能性状变异最显著的环境变量，种间变异在藏东植物群落功能性状随环境变化中起主要作用。研究结果揭示了藏东木本植物功能性状的权衡模式及其对高寒环境的适应策略，有助于加深对藏东自然植物资源分布规律和生态功能的认识，为区域生态系统功能和生物多样性保护提供科学依据。 Abstract:Examining the relationships between functional traits of plant communities and their responses to environmental changes can effectively reveal the trade-off patterns of plant functional traits and their adaptation strategies to the environment. The Qamdo region is located in the northwest of the Hengduan Mountains in eastern Tibet. The complex climate and topography have fostered an abundance of plant resources. It is the main component of the Qinghai-Tibet Plateau forest and shrub ecosystem and a hot spot for international biodiversity conservation. Based on a large number of field investigations, we tested the correlation between plant functional traits, the variation of functional traits with environmental variables, and the sources of variation in functional traits of the dominant woody plants in the forest and shrub community of eastern Tibet using correlation analysis, principal component analysis (PCA), linear regression, and variance analysis. The results showed that:(1) The woody plants in eastern Tibet exhibited a trade-off pattern of adaptation to the high cold environment, characterized by a small specific leaf area (SLA) and leaf volume (LV), a high leaf dry matter content (LDMC), and a synergetic variation between leaf phosphorus content (LNC) and leaf potassium content (LKC). (2) Elevation and climate variables are the primary drivers of variation in functional traits of woody plants in eastern Tibet, and woody plants in eastern Tibet tend to adopt a conservative adaptation strategy of "high input-slow return" to improve their cold resistance. (3) Elevation is the most significant environmental variable influencing the variation of plant functional traits in eastern Tibet. The interspecific variation explains the majority of the total variation in functional traits with the environment in eastern Tibet. The results of this study reveal the trade-off patterns of functional traits of woody plants in eastern Tibet and their adaptation strategies to the high cold environment, which contributes to a better understanding of the distribution pattern and ecological function of natural plant resources in eastern Tibet, and provides a scientific basis for regional ecosystem functional and biodiversity protection. 参考文献 相似文献 引证文献