应用生态学报最新文献

{"title":"Spatial distribution characteristics and evolution trends of ecosystem carbon sequestration services in nor-thern Shaanxi, China over the past two decades.","authors":"Zhi-Bin Hu, Xiao-Ping Zhang, Wen-Liang Geng, Hao-Jia Wang, Yu-Jie Zhang","doi":"10.13287/j.1001-9332.202607.003","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.003","url":null,"abstract":"<p><p>With the implementation of ecological projects such as \"Returning Farmland to Forest and Grassland\", vegetation on the Loess Plateau has been restored, with positive consequence on the supply capacity of carbon sequestration services. However, whether the spatial distribution of this capacity matches the actual human demand remains unclear. Based on multi-source data such as land use and socio-economic data from 2000 to 2020, we used the InVEST model and population density method to quantitatively assess the supply and demand characteristics of ecosystem carbon sequestration services in northern Shaanxi, and used GeoDa to reveal their spatial matching cha-racteristics. The results showed that over the past 20 years, the area of grasslands and forests had steadily increased (by 2% and 1.6%, respectively), while cultivated land and unused land had continuously decreased (by 4.2% and 0.6%, respectively), and construction land had rapidly expanded (more than three times). The land use transition was mainly from cultivated land to ecological land (forest and grassland), and from grassland to construction land. The supply and demand of carbon sequestration services both showed upward trends, with a respective increase of 7.96×10⁶ and 34.92×10⁶ t. Spatially, the high-value areas of carbon supply were mainly distributed in the south part, while the low-value areas were mainly in the northwest part. The high-value areas of carbon demand were mainly distributed in the urban areas and showed a trend of spreading to the surrounding areas over time. Over the past 20 years, the supply and demand of carbon sequestration services were unbalanced, with the surplus area decreasing by 0.7%, and the spatial mismatch was obvious. The high-value surplus was mainly distributed in forests and grasslands, while the high-value deficit was mainly in construction land with intense human activities. Both the supply and demand of carbon sequestration services showed significant spatial aggregation characteristics. The Moran's <i>I</i> index of carbon supply and carbon demand fluctuated slightly, ranging from 0.431 to 0.448 and 0.780 to 0.813, respectively. The Moran's <i>I</i> index of supply-demand ratio gradually increased, ranging from 0.448 to 0.728. Our results could provide theoretical support for in-depth understanding of the evolution mechanism of the supply and demand of regional carbon sequestration service under the influence of ecological projects, as well as for the formulation of differentiated ecological regulation strategies.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2245-2256"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833204","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":"Simulation of carbon sink-welfare coupling and policy regulation in the Yellow River Basin under blue-green-grey space synergy.","authors":"Jing Bai, Jia-Si He, Jie Zhou, Xin Li, Ze-Jiang Liu","doi":"10.13287/j.1001-9332.202607.025","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.025","url":null,"abstract":"<p><p>The coordinated governance of carbon sinks and welfare in the Yellow River Basin represents a crucial practice for China in implementing the \"dual carbon\" strategy, which can offer a reference for the sustainable development of major river basins globally. Based on socio-ecological system theory and multi-source data including land use data and socioeconomic statistics from 2000 to 2020, we constructed a dynamic analytical framework that integrating PLUS land use simulation, ARIMA time series forecasting, and a coupled coordination model. We further revealed the spatiotemporal variations of the carbon sink-well-being coupling under the transformation of blue, green, and grey spaces in the Yellow River Basin from 2000 to 2020, and then simulated and evaluated the variations of the carbon sink-well-being coupling relationship and the effects of policy interventions by 2030. The results showed that land use change in the Yellow River Basin followed a \"four increases, two decreases\" pattern between 2000 and 2020, with forest, grassland, water body, and construction land continuing to expand and cropland and bare land were contracted. Overall, the pattern exhibited a spatial differentiation characterized by \"preserving green in the upstream and expanding grey in the downstream\". Carbon sink levels and resident well-being indices generally continued to rise. The coordination of the carbon sink-well-being coupling gradually shifted from being dominated by disharmony toward a state of harmony, with the proportion of cities exhibiting disharmony decreasing from 61.7% in 2000 to 18.9% in 2020. However, the proportion of cities with lagging carbon sinks rose to 64.8%, indicating intensified regional divergence. By 2030, the expansion of construction land would continue, squeezing the ecological space of some downstream cities and slowing the growth trend of carbon sinks. The residents' well-being would continue to improve, whereas the coupling coordination (<i>D</i>) of upstream cities would mostly remain at a high-quality coordination stage (<i>D</i>>0.9). The downstream cities such as Zhengzhou and Jinan would remain trapped in an \"high well-being-low carbon sink\" imbalance (<i>D≤</i>0.9). Although policy interventions can improve coordination, over 60% of carbon sink-lagging cities would be unable to shift their development patterns even under mandatory interventions due to the dual constrains of structural rigidity and diminishing marginal effects. Considering this, we proposed three governance orientations: coordinated development type, welfare improvement-led type, and carbon sink improvement-led type, which would provide a scientific basis for the differentiated governance of territorial space within river basins.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2282-2292"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833237","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":"Profile characteristics of soil organic carbon in shallow karst fissures and its influencing factors.","authors":"Sheng-Jian Xiang, Wan-Chi Li, Hong Ma, Feng-Ming Lyu, Guo-Yong Tang","doi":"10.13287/j.1001-9332.202607.011","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.011","url":null,"abstract":"<p><p>Shallow karst fissures are important reservoirs and habitats for soils in karst regions and play a crucial role in controlling rocky desertification. Previous studies have often intentionally or unintentionally avoided karst fissures and examined only bulk soil (non-fissure soil), which may lead to biased research results. Taking seven fissure plots and one bulk soil plot within a <i>Dodonaea viscosa</i> shrub community in a karst faulted basin as research objects, we investigated the profile characteristics of soil organic carbon (SOC) in fissure soils and the controlling factors by using correlation analysis and structural equation modeling. The results showed that: 1) SOC, readily oxidizable organic carbon (ROC), and dissolved organic carbon (DOC) in both fissure soil and bulk soil decreased with increasing soil depth. The average SOC in the 0-75 cm fissure soil profile (26.48 g·kg^-1) was 72.2% higher than that in bulk soil (15.38 g·kg^-1). The mean ROC and DOC contents were 30.7% and 44.6% higher than those in the bulk soils, respectively. 2) Total nitrogen (TN), alkaline hydrolyzable nitrogen (AN), ROC, DOC, and β-glucosidase (βG) activity were all significantly positively correlated with SOC in fissure soils, whereas soil water content (SWC) showed a highly significant negative correlation with SOC in fissure soil. 3) Soil nitrogen content and carbon fractions were the direct drivers of SOC. SWC in fissure soil had no direct effect on SOC, but indirectly suppressed SOC accumulation mainly by inhibiting soil nitrogen content (TN and AN). This study revealed the distribution patterns, accumulation characteristics and controlling factors of SOC in karst fissures. We recommended that an appropriate proportion of fissure soil should be included to guarantee the accuracy and reliability of results in karst soil research.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2187-2194"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148832924","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 the regulation of sludge bulking by quorum sensing.","authors":"Song-Ya Li, Yan-Xiang Geng, Biao Liu, Lin-Pei Wang, Nan-Jun Song, Hui-Lin Jia, Yan-Tao Zhao","doi":"10.13287/j.1001-9332.202607.033","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.033","url":null,"abstract":"<p><p>Sludge bulking is a great challenge in the activated sludge process, seriously affecting the stable operation of the wastewater treatment system. Traditional methods can not fundamentally overcome the competitive advantage of filamentous bacteria. Quorum sensing, as the core mechanism of communication among microbial cells, has been proven to be important in regulating sludge bulking. We reviewed the types, mechanisms, and limitations of traditional methods for sludge bulking, and summarized the basic principles and main signaling molecules of quorum sensing. We further focused on analyzing the regulation of sludge bulking pathways through extracellular polymer synthesis and microbial community structure based on quorum sensing, and summarized the quorum quenching control strategy. Finally, we provided an outlook on quorum sensing-regulated of sludge bulking and pointed out the main challenges faced by current research during the transition from laboratory research to engineering applications. This review could provide theoretical references for a deeper understanding of the regulatory role of quorum sensing in controlling sludge bulking and to promote the engineering application of targeted control strategies based on quorum sensing regulation.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2473-2480"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833018","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 heterogeneity and dominant factors of soil preferential flow under different tillage practices on slo-ping farmland of the Anning River Valley area.","authors":"Yi-Xiong Zhang, Yong Wang, Hong-Tao Chen, Zi-Ting Ma, Dan-Dan Li","doi":"10.13287/j.1001-9332.202607.027","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.027","url":null,"abstract":"<p><p>The Anning River Valley is characterized by dramatic topographic relief, extensive distribution of slo-ping farmland, and intensive tillage practices, which together lead to frequent soil preferential flow. We investigated the spatial heterogeneity of preferential flow and its dominant controlling factors under different tillage practices. We compared the spatial morphological characteristics and driving mechanisms of preferential flow under the long-term downslope tillage and contour tillage practices in two typical sloping farmlands, by using field dye tracer experiment and image analysis method. The results showed that downslope tillage led to the perferential flow extending longitudinally in a tree-like pattern, with obvious path differentiation and strong connectivity, whereas contour tillage results in a clod-like, laterally diffused preferential flow with uniform distribution and weak fracture development. Under the condition of long-term downslope tillage, the preferential flow fraction, length index, and macroporosity followed the order of lower slope > middle slope > upper slope, while the order under contour tillage was upper slope > middle slope > lower slope. At the same slope position, all these indicators were higher under downslope tillage than under contour tillage. Under both tillage practices, the dye coverage ratio generally decreased with increasing soil depth, and downslope tillage showed higher dye coverage than contour tillage at all soil depths. The average staining area ratio under downslope tillage practice was higher than that under contour tillage practice. Under the condition of downslope tillage practice, the staining area ratio along the path increased rapidly in the top layer (0-5 cm) and then gradually decreased. In contrast, the vertical distribution of the staining area ratio under contour tillage practice tended to be stable. Slope position was the key factor governing the development of preferential flow pathways under downslope tillage, whereas soil layer depth was the dominant one influencing the spatial distribution of preferential flow under contour tillage. In conclusion, downslope tillage significantly promoted the development of preferential flow, while contour tillage effectively inhibited excessive preferential flow by altering water flow paths and spatial distribution patterns. These findings would provide a scientific basis for the integrated management of soil erosion on sloping farmlands in the Anning River Valley area.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2195-2205"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833170","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":"Applicability of a SIF-based mechanistic light-response model for estimating gross primary productivity and yield of winter wheat in the North China Plain.","authors":"Ya-Mei Liu, Rong-Jun Wu, Huan Guo, Jia-Cheng Zhao, Zhao-Zhong Feng","doi":"10.13287/j.1001-9332.202607.016","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.016","url":null,"abstract":"<p><p>High-accuracy and near-real-time simulation of yield of winter wheat is of great significance for ensuring national food security and addressing climate change. In recent years, solar-induced chlorophyll fluorescence (SIF) parameters have been widely applied in crop growth monitoring. Based on Sentinel-5P/TROPOMI SIF data and the mechanistic light-response model (MLR), we integrated a winter wheat gross primary productivity (GPP) estimation model for the winter wheat-producing areas of the North China Plain, which could characterize the energy supply of light reactions and the carbon assimilation process of dark reactions without requiring complex physiological parameter inputs. We used this model to assess wheat yield. The results showed that, during 2019-2023, the annual coefficients of determination between the model-simulated GPP and site-observed GPP ranged from 0.74 to 0.95; at the regional scale, compared with the GPP products from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Orbiting Carbon Observatory-2 SIF (GOSIF), this model showed clear advantages in reducing systematic bias. The yield estimation results showed that annual coefficients of determination between the model-estimated yield and the county-level measured yield ranged from 0.552 to 0.824, while the annual root mean square error values ranged from 508.56 to 563.42 kg·hm^-2. Overall, the SIF-based MLR model demonstrated good applicability and reliability in GPP and county-level yield assessment for the winter wheat-producing areas of the North China Plain, providing an important technical reference for the operational application of agricultural remote sensing monitoring in China.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2233-2244"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833173","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":"Threshold effects of built environment and social media on positive sentiment of visitors in Beijing parks.","authors":"Ling-Qiang Kong, Hui Wei, Wen-Hao Zhou, Xue-Ning Fang, Jian-Min Qiao, Hang Zhang, Li-Juan Feng, Wen-Wu Zhao","doi":"10.13287/j.1001-9332.202607.028","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.028","url":null,"abstract":"<p><p>In the digital era, urban parks contribute to public well-being not only through ecological and spatial functions but also through the influence of social media within an \"online-offline\" coupled experience. Previous studies have largely emphasized the role of the built environment, but overlooked the threshold effects of both the built environment and social media on positive sentiment of visitors. This gap constrains the advancement of refined and digitally enabled park governance. Using 98 parks with high social media activity within Beijing's Fifth Ring Road as a case, we examined the nonlinear relationships and threshold effects linking the built environment, social media, and visitors' positive sentiment, by integrating multi-source data-including social media and remote sensing and employing machine learning approaches, such as random forest, mean decrease impurity (MDI), mean decrease accuracy (MDA), and Shapley additive explanations (SHAP). The results showed that the association between social media factors and visitors' positive sentiment was stronger than that between most traditional park built-environment factors and visitors' positive sentiment. The cumulative relative importance of social media factors across MDI, MDA, and SHAP reached 83.3%, 92.8%, and 82.4%, respectively. Both built environment and social media factors exhibited multiple nonlinear thresholds. Specifically, the median threshold of Dazhong Dianping rating was 4.88, above which positive sentiment increased sharply. The median threshold for park area was 47.12 hm², beyond which the positive correlation tended to level off. The median threshold for average housing price was 135400 yuan·m^-2, above which its relationship with positive sentiment shifted from neutral to negative. Our results highlighted the critical role of social media in shaping park visitors' emotional experiences and revealed the complex nonlinear interactions between digital and physical environments. For urban parks with high social media engagement, park governance could shift towards precision-oriented approaches that prioritize the management of digital word-of-mouth and the optimization of resource allocation, thereby enhancing the high-quality, efficient, and equitable provision of green space services and supporting people-centered sustainable urban development.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2329-2342"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833222","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 nitrogen addition on the contents of 10 elements in litter and soil of <i>Larix gmelinii</i> secondary forest.","authors":"Qiu-Lan Zhao, Wen-Cong Zhu, Qing-Gui Wang, Xian-Kui Quan","doi":"10.13287/j.1001-9332.202607.004","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.004","url":null,"abstract":"&lt;p&gt;&lt;p&gt;We conducted a nitrogen addition experiment (0, 25, 50 and 75 kg N·hm&lt;sup&gt;-2&lt;/sup&gt;·a&lt;sup&gt;-1&lt;/sup&gt; denoted as control, low nitrogen, middle nitrogen and high nitrogen, respectively) in a secondary &lt;i&gt;Larix gmelinii&lt;/i&gt; forest to measure C, N, P, K, Ca, Mg, S, Fe, Mn and Zn contents in undecomposed and decomposed litter layers, as well as that in 0-10 cm and 10-20 cm soil layers. The results showed that N and Mn contents in undecomposed litter layer significantly increased by 15.0%-28.5% and 13.1%-22.2% respectively under nitrogen addition treatments; K content significantly increased by 19.3%-24.8% under middle and high nitrogen treatments; P content significantly decreased by 8.8% under high nitrogen treatment; Ca and S contents significantly decreased by 12.2%-13.1% and 9.9%-13.5% respectively under middle and high nitrogen treatments; C, Mg, Fe and Zn contents showed no significant change under nitrogen addition treatments. Compared with control, C and S contents in decomposed litter layer significantly decreased by 10.2%-20.9% and 19.5%-33.9% respectively under middle and high nitrogen treatments; Fe content significantly decreased by 6.5%-9.4% under low and middle nitrogen treatments; Mn content significantly increased by 10.7%-21.2% under nitrogen addition treatments; Zn content significantly increased by 9.3% under high nitrogen treatment; N, P, K, Ca and Mg contents showed no significant changes. Nitrogen addition accelerated the release rates of C, N, K and S from litter, suppressed the release rates of P, Ca and Zn, and did not affect that of Mg, Fe and Mn. Compared with control, Soil organic carbon (SOC) and N contents in 0-10 cm soil layer significantly increased by 40.1%-70.0% and 6.6%-18.8% respectively under nitrogen addition treatments, whereas P and Zn contents significantly decreased by 6.2%-25.0% and 15.1%-32.8%, respectively. Fe content significantly increased by 1.8%-3.9% under low and middle nitrogen treatments, while K content signifi-cantly decreased by 2.4%-3.4% under low and middle nitrogen treatments. Ca and S contents significantly decreased by 8.8% and 39.4%, respectively, under high nitrogen treatment. Mg and Mn contents showed no significant changes. Compared with control, N and S contents in 10-20 cm soil layer significantly increased by 4.3%-13.7% and 24.2%-69.3% respectively under nitrogen addition treatments, while SOC content significantly increased by 55.6%-72.7% under low and middle nitrogen treatments. P and Zn contents significantly decreased by 19.1%-24.2% and 17.8%-24.9% respectively under middle and high nitrogen treatments, whereas K content significantly decreased by 5.8% under low nitrogen treatment. Ca, Mg, Fe and Mn contents showed no significant changes. N and Ca contents in 0-10 cm soil layer were significantly positively correlated with those in undecomposed litter layer, while SOC, N, P, Ca, Mg and Zn contents in 0-10 cm soil layer were significantly positively correlated with their corresp","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2116-2126"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148832544","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":"Population dynamics of breeding seabirds and diet of common breeding seabirds along the coast of Zhejiang Province, China.","authors":"Ke-Ying Zhu, Yi-Wei Lu, Si-Yu Wang, Peng Ding, Chun-Yao Li, Bo Su, Xiao Yu, Xi-Lai Zhou, Zhong-Yong Fan, Ke He","doi":"10.13287/j.1001-9332.202607.032","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.032","url":null,"abstract":"<p><p>Seabirds are a key indicator species of marine. Understanding their diet is of great significance for assessing coastal trophic structure and formulating conservation strategies. Based on integrated citizen science data from 2021 to 2025 and DNA metabarcoding technology, we analyzed population dynamics of breeding seabirds along the coast of Zhejiang Province, as well as the dietary characteristics of two common species, <i>Larus crassirostris</i> and <i>Onychoprion anaethetus</i>, during the breeding season. Citizen science data indicated that the coastal area of Zhejiang served as an important habitat for seabirds. A total of 95269 seabirds were recorded in the past five years. Zhoushan Archipelago had become the core breeding habitat for seabirds. High-throughput sequencing based on DNA metabarcoding of fecal samples from <i>L. crassirostris</i> and <i>O. anaethetus</i> identified a total of 36 fish species and 30 crustacean species. There was dietary differentiation between <i>L. crassirostris</i> and <i>O. anaethetus</i>. <i>L. crassirostris</i> mainly preyed on marine fish of Mugilidae and Engraulidae, while <i>O. anaethetus</i> prefer marine fish of Clupeidae and Mullidae. Both species fed on arthropods of Macrophthalmidae and Portunidae. In addition, <i>L. crassirostris</i> consumed the freshwater fish <i>Micropterus salmoides</i>, revealing dietary plasticity in the ecotone between marine and terrestrial habitats. Due to limited sampling of <i>O. anaethetus</i>, dietary diversity analysis was only performed on <i>L. crassirostris</i> from multiple breeding islands. The results showed that <i>L. crassirostris</i> from Wuzhushan Island of Zhoushan had the highest dietary composition diversity, without differences among islands. This study filled the gap in basic dietary data of common seabirds along the coast of Zhejiang Province and provides scientific support for the conservation of coastal biodiversity.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2415-2423"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148832926","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":"Screening and characterization of <i>Paenibacillus polymyxa</i> YB-393, a biocontrol agent against wheat crown rot.","authors":"Qian-Qian Dong, Ying-Hang Chang, Teng-Jiao Xu, Juan Liang, Jie Zhang, Run-Hong Sun, Ming-Cong Xia, Chao Wu, Li-Rong Yang","doi":"10.13287/j.1001-9332.202607.010","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202607.010","url":null,"abstract":"<p><p>To exploit superior microbial strains for the biocontrol of wheat crown rot, we employed high antagonistic activity and strong colonization ability as dual criteria to screen strains from the culture collection of the Agricultural Microbiology Innovation Center of Henan Province. We comprehensively evaluated the candidate strain for both biocontrol efficacy and plant growth-promoting traits, and subsequently identified it through integrated morphological, molecular biological, and genomic analyses. The results showed that <i>Paenibacillus polymyxa</i> YB-393 exhibited the strongest root colonization capacity among all the tested strains in axenic wheat seedlings. It achieved a population density of 1.83×10⁵ CFU·g^-1 fresh root after 48 h, displayed potent antagonistic activity against fungal (e.g., <i>Fusarium pseudograminearum</i>) and oomycete (e.g., <i>Phytophthora capsici</i>) pathogens, and also produced β-1,3-glucanase, siderophores, indole-3-acetic acid, as well as possessed phosphate-solubilizing ability. Compared with the water control, seed soaking with YB-393 increased the total fresh weight of wheat seedlings by 58.8% and provided 80.5% control efficacy against crown rot. Genomic analysis revealed that it encompassed five known antimicrobial biosynthesis gene clusters and thirteen uncharacterized secondary metabolite biosynthetic gene clusters, thereby offering promising targets for the discovery of novel biocontrol agents. In summary, <i>Paenibacillus polymyxa</i> YB-393 integrates robust biocontrol activity with plant growth-promoting properties, positioning it as a promising candidate for developing biocontrol agents against wheat crown rot.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 7","pages":"2373-2382"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833145","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}