应用生态学报最新文献

{"title":"Habitat fragmentation and biodiversity response: Controversy, attribution, and prospects.","authors":"Yu Cao, Bo-Yang Deng, Ya-Juan Wang, Jia-Yang Ye, Dan Su, Xiao-Qian Fang","doi":"10.13287/j.1001-9332.202502.011","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.011","url":null,"abstract":"<p><p>As global ecosystems continue to degrade, the impact of habitat fragmentation on biodiversity has become a critical issue in biodiversity conservation. However, both negative and positive impacts of habitat fragmentation on biodiversity have been reported in different studies. The coexistence and exchange of opposing views has increasingly evolved into debates based on inherent positions, which seriously restricts the further research development and the theoretical guidance of biodiversity conservation. We reviewed the connotation and measurement methods of habitat fragmentation, as well as the connotation of different levels of biodiversity. We revealed the academic divergence on this issue at different levels of biodiversity, and found such divergence at the genetic, species and ecosystem levels of biodiversity. We analyzed the reasons for these differences, and discussed the existing problems and directions of future research.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"625-636"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial-temporal pattern of vegetation growth and its driving factors in the Yellow River Basin of Shaanxi Province, Northwest China during 2001-2020.","authors":"Xu-Ting Zhang, Wei-Min Zhang, Yu-Ying Pan, Wen-Ting Quan, Mei-Rong Li, Hui-Juan He, Hui Zhou","doi":"10.13287/j.1001-9332.202502.027","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.027","url":null,"abstract":"<p><p>Shaanxi Province is an important region for implementing the strategy of ecological conservation and high-quality development of the Yellow River Basin. Based on remote sensing data of vegetation growth, combined with meteorological raster data and digital elevation model data, we used trend analysis, partial correlation analysis, coefficient of variation, residual analysis, and relative impact analysis methods to examine the spatial-temporal varia-tion and driving factors of vegetation growth in the Yellow River Basin of Shaanxi Province during 2001-2020. The results showed that both the normalized difference vegetation index (NDVI) and gross primary productivity (GPP) exhibited a significant upward trend, with a growth rate of 0.066·(10 a)^-1 and 133.610 g C·m^-2·(10 a)^-1, respectively. Spatially, 78.0% and 92.1% of the areas showed significant increases in NDVI and GPP, respectively, with stable vegetation growth in most areas. NDVI and GPP initially decreased and then increased with increasing elevation, and peaking at slopes greater than 20°. Vegetation growth on the shady slope was slightly better than on the sunny slope. Both showed the highest growth rates at elevations of 750-1250 m and slopes of 2°-10°. The NDVI growth rate was greater on the west, southwest, and east slopes, while the GPP change trends were similar across different slope aspects. The areas where NDVI was positively correlated and negatively correlated with ave-rage temperature were approximately equal in size. About 17.0% of the area was significantly positively correlated with precipitation, and 5.6% was significantly negatively correlated with sunshine hours. The spatial distribution of GPP showed significantly positive correlation areas of 6.1% with average temperature and 12.3% with precipitation, with scattered significant correlation areas for sunshine hours. 86.3% of the area showed an improvement in vegetation growth driven by both climate change and human activities. In regions with enhancing vegetation condition, human activities had a relatively positive impact on vegetation growth, accounting for 84.5%, especially in the core areas of the project of returning farmland to forest and grassland. In regions with degradation of vegetation, areas where the relative impact of human activity exceeded 80% accounted for nearly 30%, primarily concentrated in the urban agglomeration of Guanzhong Plain.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"341-352"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sprouting characteristics and elevation differentiation patterns of woody plants in the Baima Snow Mountain, China.","authors":"Pei-Yao Liu, Cai-Cai Zhang, Zhi-Ming Zhang, Lu-Xiang Lin","doi":"10.13287/j.1001-9332.202502.004","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.004","url":null,"abstract":"<p><p>We investigated the composition and diversity of sprouting plants across forest communities along an elevation gradient (3155-3979 m) in the Baima Snow Mountain, and examined the variations in sprouting ability among taxonomic groups (families, genera, and species) and growth forms (trees and shrubs). The results showed that a total of 4211 woody plants exhibited sprouting behavior across five plots. These plants belonged to 38 species, 22 genera and 12 families, representing 95.0%, 95.7% and 92.3% of the total community. <i>Rhododendron rigidum</i> exhibited the highest number of sprouting stems (3311), while <i>Rhododendron wardii</i> showed the highest sprouting rate (70.1%). The number and composition of sprouting species varied across elevations. From the lowest to highest elevation (3155, 3382, 3685, 3802, and 3979 m), the number of sprouting was 17, 15, 12, 11 and 15, accounting for 85.0%, 75.0%, 85.7%, 84.6%, and 88.2% of the total species at each elevation respectively. The species with the highest number of sprouts stems differed by elevation: <i>R. rigidum</i> (3155 and 3382 m), <i>Rhododendron fortunei</i> (3685 m), <i>Lonicera tangutica</i> (3802 m), and <i>R. wardii</i> (3979 m). The species with the highest sprouting rate was <i>Quercus semecarpifolia</i> (3155 m), followed by <i>R. fortunei</i> (3382 and 3685 m), <i>L. tangutica</i> (3802 m), and <i>R. wardii</i> (3979 m). The number of sprouting stems for both trees and shrubs, as well as the sprouting rates for trees, showed a trend of first increasing and then decreasing with elevation. In contrast, the sprouting rate of shrubs showed no significant variation. The richness of tree-form sprouting plants showed a single-peak pattern, with the highest richness at 3685 m, whereas shrub-form sprouting plants richness showed an inverse mid-domain pattern, initially decreasing with elevation before increasing again. Sprouting was a prevalent phenomenon in montane forest ecosystems, and the sprouting capacities of different growth forms exhibited significant elevational patterns.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"418-426"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water sources of three common greening tree species in arid oasis regions.","authors":"Saitiniyazi Adilai, Jun-Ling He, Yi-Ming Bilali, Xi-Feng Ju, Tiemuerbieke Bahejiayinaer, Peng-Nian Wang, Qi Zhang, Yan-Qiang Wei, Wu Zhao, Li-Ming Liu","doi":"10.13287/j.1001-9332.202502.018","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.018","url":null,"abstract":"<p><p>In the context of water scarcity, understanding the water sources of major afforestation species would provide a reference for urban greening and water resource management in arid oasis areas. Taking three key tree species of afforestation, <i>Platanus orientalis</i>, <i>Ulmus pumila</i>, and <i>Robinia pseudoacacia,</i> in the Kashgar region on the western edge of Tarim Basin as objects, we analyzed the stable oxygen isotope values (δ¹⁸O) of xylem water from branches and their potential water sources, along with stable carbon isotope values (δ¹³C) of leaves, to determine the proportion of different water sources for each species and assess their water use efficiency (WUE). The results showed that <i>P. orientalis</i> exhibited diverse water source utilization, with a relative balance distribution among groundwater, river water, and soil water at varying depths (23.0% of groundwater, 20.7% of river water, 19.0% of depth soil water 0-60 cm, 19.6% of depth soil water 200-300 cm). In contrast, <i>U. pumila</i> and <i>R. pseudoacacia</i> relied more on soil water. <i>U. pumila</i> accessed soil water at depth of 0-60 cm (55.2%), while <i>R. pseudoacacia</i> utilized water from the depth of 0-140 cm (61.3%). The foliar δ¹³C values of <i>R. pseudoacacia</i> (26.0‰) were higher than that of <i>P. orientalis</i> (28.0‰) and <i>U. pumila</i> (27.4‰), indicating higher WUE. Under the drought condition, <i>P. orientalis</i> exhibited resilience by using soil water, groundwater, and river water. In contrast, <i>U. pumila</i> and <i>R. pseudoacacia</i> were constrained to soil water and had overlapping water absorption depths. It is necessary to avoid water competition between the two species in mixed planatation.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"437-444"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differences in radial growth responses to climate and ecological resilience between healthy and declining <i>Pinus sylvestris</i> var. <i>mongolica</i> and <i>Populus</i> L.","authors":"Chao-Feng Yuan, Wen-Zhi Wang, Zhe-Hong Wu, Yong Su, Ling-Zhuo Luo","doi":"10.13287/j.1001-9332.202502.002","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.002","url":null,"abstract":"<p><p>With global climate warming and the alteration of precipitation regime, the Three-North Shelter Forest in China has been degraded in recent years, which is a primary challenge for shelterbelt construction. Our understan-ding of the physiological mechanisms behind forest decline remains limited. In this study, we employed dendrochronological methods to measure the basal area increment (BAI) and tree-ring width of both healthy and degraded <i>Pinus sylvestris</i> var. <i>mongolica</i> and <i>Populus</i> L. We developed corresponding standardized chronologies (STD) to analyze their responses to climatic factors and ecological resilience during drought periods, and to elucidate the mechanisms of degradation in <i>P. sylvestris</i> var. <i>mongolica</i> and <i>Populus</i> L. under climate change, as well as their differences in drought adaptability. The results showed that radial growth in healthy <i>P. sylvestris</i> var. <i>mongolica</i> had significantly increased since 1978, with higher mean BAI of healthy trees than the degraded trees. They both exhibited a significant positive correlation with the annual palmer drought severity index (PDSI). Healthy <i>P.</i> <i>sylvestris</i> var. <i>mongolica</i> was less sensitive to precipitation and more resistant and resilient during drought periods. Since 1983, there had been no significant trend in radial growth for either healthy or degraded <i>Populus</i> L., though the mean BAI of healthy <i>Populus</i> L. was significantly higher than that of declining trees. Healthy <i>Populus</i> L. trees exhi-bited weaker correlations with precipitation, PDSI, and vapor pressure deficit (VPD) compared to the degraded trees, yet they showed higher resistance and resilience during droughts. <i>P. sylvestris</i> var. <i>mongolica</i> showed signs of decline earlier than <i>Populus</i> L. and demonstrated greater sensitivity to the PDSI. Nevertheless, it exhibited higher resistance and resilience than <i>Populus</i> L. In conclusion, drought and precipitation emerge as the primary climatic factors contributing to the decline of <i>P. sylvestris</i> var. <i>mongolica</i> and <i>Populus</i> L., with degraded trees being more sensitive to climate change. <i>P. sylvestris</i> var. <i>mongolica</i> demonstrated stronger adaptability to cumulative drought than <i>Populus</i> L., making it more likely to survive under future scenarios of increased drought caused by climate warming. This study provided data support and scientific insights for species selection in the Three-North Shelter Forest Project.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"411-417"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress on earthworms and soil health.","authors":"Ruo-Wen Liu, Jun-Jie Zhai, Xing Wang","doi":"10.13287/j.1001-9332.202502.036","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.036","url":null,"abstract":"<p><p>Soil health, reflecting the physical, chemical, and biological properties of the soil is closely related to soil functions and plant productivity. Soil health is crucial for ensuring food security, ecological balance, and human health. Earthworms are known as ecosystem engineers, due to their unique biological characteristics. They are not only indicators of soil health but also play an important role in improving soil health. Earthworms have profound impacts on soil health through their activities such as burrowing, feeding, digesting, excreting, and secreting mucus from their body surface. We reviewed research advances on the roles of earthworms in improving soil structure, accelerating the decomposition of organic matter, increasing soil microbial diversity, promoting nutrient cycling, and providing nutrients for plant growth. Furthermore, we elaborated the role of earthworms in collaborating with their gut microbiota to accelerate the reduction of pollutants in the soil, improve soil purification capacity, maintain ecosystem balance, promote soil health, and increase crop yields. Moreover, we provided an outlook on future researches related to earthworms and soil health.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"637-646"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of potassium fertilizer on rhizosphere microbial diversity and community assembly in sugarcane.","authors":"Zhong-Fu Zhang, Yu-Tong Wang, Jing Ai, Jing-Mei Dao, Ao-Mei Li, Jun Deng, Jian-Ming Wu, Yong Zhao","doi":"10.13287/j.1001-9332.202501.015","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202501.015","url":null,"abstract":"<p><p>The abundant and rare populations of microorganisms in the ecosystem play a crucial role in preventing pathogen transmission, regulating nutrient cycling, facilitating pollutant degradation. However, less attention has pain on the agroecosystems. We conducted a field experiment to evaluate the effects of different potassium application rates (0, 75, 150, 225, 300 kg·hm^-2) on the microbial diversity, the driving factors and the microbial community assembly process of the sugarcane rhizosphere through the high-throughput sequencing and ecological mode-ling techniques. The results showed that the potassium application exerted a significant effect on soil nutrient content and soil enzyme activities, which were highest at the application rate of 300 and 225 kg·hm^-2, respectively. The abundant populations mainly concentrated in a few dominant species. Potassium application significantly affected species composition and community structures of the rhizosphere microorganisms. Under potassium application, soil urease, soil organic matter, and catalase were the key limiting factors, which could affect community structures of the abundant and rare microbial populations. The effects of potassium application on the rhizosphere bacterial community were greater than those on the fungal community, and the effects on the abundant microbial community was greater than that on the rare one. Community assembly of bacteria and fungi were predominantly driven by determini-stic processes in the sugarcane rhizosphere, with the heterogeneity selection dominating in bacteria and the homogeneity selection dominating in fungi. The deterministic processes played a key role in the abundant and rare communities assembly. In conclusion, our results demonstrated that potassium application significantly affected soil nutrients and enzyme activities. The potassium application could enhance the diversity of abundant and rare populations of bacteria and fungi and regulate soil microbial community assembly in the rhizosphere.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"526-536"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of insect herbivory on leaf volatile organic compound emission and photosynthetic characteristics of saplings in subtropical region.","authors":"Yun-Yun Yang, Bin Yan, Qin-Qin Xu, Chu-Qiao Qin, Ya-Lin Hu","doi":"10.13287/j.1001-9332.202502.007","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.007","url":null,"abstract":"<p><p>Insect herbivory can influence tree growth, community structure and ecological processes in forest ecosystems. We investigated the effects of insect herbivory and leaf defoliation on the emission of biogenic volatile organic compounds (BVOCs), isoprene (ISO) and monoterpenes (MTs) in <i>Cinnamomum camphora</i> (broad-leaf tree) and <i>Cryptomeria japonica</i> (coniferous tree), and explored the underlying mechanisms by measuring leaf phy-siological characteristics such as photosynthetic parameters and chlorophyll fluorescence. The results showed that insect herbivory and leaf defoliation increased the emission of BVOCs from the leaves of both species compared to the control. Three days after the completion of insect herbivory treatment, the emission flux of ISO in <i>C. camphora</i> and <i>C. japonica</i> increased by 4.9 and 3.1 times, respectively, while leaf defoliation increased the ISO emission flux of <i>C. camphora</i> by 4.6 times. Insect herbivory increased photosynthetic rate, stomatal conductance, intercellular CO₂ concentration, and transpiration rate in <i>C. camphora</i>, but did not affect the photosynthetic parameters of <i>C. japonica</i>. In contrast, leaf defoliation significantly reduced chlorophyll fluorescence parameters in <i>C. japonica</i>. The Pearson correlation analysis and structural equation modeling showed that the emission of ISO and MTs from <i>C. camphora</i> leaves significantly correlated with photosynthetic and chlorophyll fluorescence parameters. Compared to chlorophyll fluorescence parameters, photosynthetic parameters had a greater influence on the emission of ISO and MTs. For <i>C. japonica</i>, ISO emission was significantly correlated with chlorophyll fluorescence parameters, and chemical induction due to insect herbivory having a more pronounced effect on ISO emission. In conclusion, our results indicated that insect herbivory could enhance the emission of BVOCs, but the response mechanism varied with tree species. For <i>C. camphora</i>, the increase in BVOC emission was due to the enhanced photosynthetic rates. The chemical induction resulting from insect herbivory played a more important role in increasing BVOC release from <i>C. japonica</i>.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"461-472"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial and temporal variations in ecosystem health and coping strategy in the Hexi Corridor under climate change.","authors":"Jie Li, Chun-Fang Liu","doi":"10.13287/j.1001-9332.202502.021","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.021","url":null,"abstract":"<p><p>The health status of ecosystems is the foundation for global climate change adaptation decision-making and a fundamental prerequisite for ensuring regional ecosystem stability. We constructed an ecosystem health assessment indicator system based on a contribution, vigor, organization and resilience model from the perspectives of system integrity and contributive capacity. With this system, we analyzed the spatial-temporal variation of ecosystem health in Hexi Corridor and its relationship with climate change from 2000 to 2020 by utilizing the bivariate Moran's index. Results showed that the ecosystem health index in the Hexi Corridor improved by 2.5% during 2000-2020. The central oasis area and the southeastern mountainous area showed significant improvement in ecological health, while the northern desert area and some localized regions experienced degradation. During the study period, the overall health status of the Hexi Corridor's ecosystem remained at a moderate level, with consistent trend across various dimensions that initially declined before subsequently rising. There was a significant spatial positive correlation between climate change and ecosystem health. In the arid and low-precipitation condition of the Hexi Corridor, increased average annual precipitation and elevated average annual temperature contributed positively to ecosystem health, which was the key determinants of regional ecosystem health. Finally, we proposed corresponding strategies for enhancing ecosystem health levels in the southern Qilian Mountain area, the central oasis areas, and the nor-thern desert areas.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"537-546"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feeding habits and influencing factors of <i>Coilia nasus</i> in the main stream of the Huaihe River in Anhui, China.","authors":"Zi-Xin Wang, Yan-Feng Zhou, Jun-Wei Xu, Du-Qing Shen, Yue Jiang, Chi Wang, Sheng-Qi Jiang, Ying Xue","doi":"10.13287/j.1001-9332.202502.034","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202502.034","url":null,"abstract":"<p><p><i>Coilia nasus</i> is one of the dominant fish species in the Huaihe River basin, with significant ecological and economic values. Research in feeding ecology is a great step towards deep understanding its life history. We analyzed stomach contents of 474 <i>C. nasus</i> samples collected in the main stream of the Huaihe River in Anhui in May and September of 2023, to investigate the composition of food, feeding intensity, feeding strategies, and the impact of environmental factors on food composition. Results showed that <i>C. nasus</i> in the main stream of the Huaihe River in Anhui primarily feed on 14 groups of prey organisms, such as decapods, copepods, and cladocerans. <i>Exopalaemon modestus</i> and <i>Eucyclops</i> sp. were the dominant prey. Individual weight, water temperature, turbidity, transparency, and water depth significantly affected feeding habits of <i>C. nasus</i>, and dissolved oxygen also had a significant impact. The empty stomach rate differed significantly between length groups, but not among seasons. The average stomach fullness index did not vary between length groups, but varied significantly among seasons. Our results indicated that <i>C. nasus</i> is a generalist predator primarily consuming animal-based prey, with intra-specific differences in food composition.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 2","pages":"596-604"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}