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TIL20: A review of island biogeography and habitat fragmentation studies on subtropical reservoir islands of Thousand Island Lake, China

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Zoological Research(diversity and Conservation) 2024年第2期1卷 89-105页

作者： Xingfeng Si Tinghao Jin Wande Li Peng Ren Qiang Wu di zeng Xue Zhang Yuhao Zhao Chen Zhu Ping ding Zhejiang Zhoushan Island Ecosystem Observation and Research Station Institute of Eco-ChongmingZhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China MOE Key Laboratory of Biosystems Homeostasis&Protection College of Life SciencesZhejiang UniversityHangzhouZhejiang 310058China

Reservoir islands formed by dam construction have the same history,clear boundaries,and large numbers that provide a natural platform for testing theories in ecology and *** this paper,we review studies of multiple zoological taxa on reservoir islands of a large lake in eastern China(Thousand Island Lake).This lake,created in 1959,has 1078 artificial land-bridge islands of varying areas and *** review summarizes the decades-long studies in island biogeography and habitat fragmentation from this island system,grouped into three topics:species richness(“how many species are there”),community structure(“who are they”),and species interaction(“how they interact with each other”).Our findings support the predictions of the Equilibrium Theory of Island Biogeography and extend this theory to predict community structure of island faunas by moving beyond assumptions of species *** addition,the extensive studies on ecological networks,including mutualistic,antagonistic,and parasitic interactions,reveal the negative impacts of habitat loss on the maintenance of such networks,even as increasing forest edge enhances the robustness of pollination *** the end of this review,we proposed several future research directions based on current studies that are simultaneously at the frontier of ecology and biogeography.

关键词： Biodiversity conservation Community assembly Species extinction Island Species interaction

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聚乳酸/聚烯烃弹性体共混体系的发泡行为

工程塑料应用 2024年第7期52卷 70-77页

作者：徐远邵玮玮吴王坚曾谛庞永艳郑文革宁波大学材料科学与化学工程学院浙江宁波315211 中国科学院宁波材料技术与工程研究所高分子与复合材料实验室浙江宁波315201

为研究聚乳酸(PLA)共混体系的界面相互作用对发泡材料泡孔结构的影响,选择聚烯烃弹性体(POE)和马来酸酐接枝聚烯烃弹性体(POE-g-MAH)分别与PLA共混,制备PLA/POE和PLA/POE-g-MAH共混物,然后利用釜压发泡,制备共混体系发泡材料。首先,利... 详细信息

为研究聚乳酸(PLA)共混体系的界面相互作用对发泡材料泡孔结构的影响,选择聚烯烃弹性体(POE)和马来酸酐接枝聚烯烃弹性体(POE-g-MAH)分别与PLA共混,制备PLA/POE和PLA/POE-g-MAH共混物,然后利用釜压发泡,制备共混体系发泡材料。首先,利用扫描电子显微镜(SEM)观察了POE和POE-g-MAH在PLA中的分散情况;然后,利用旋转流变仪研究了PLA/POE和PLA/POE-g-MAH共混体系的流变行为;最后,利用SEM研究了PLA/POE和PLA/POE-g-MAH共混体系发泡材料的泡孔结构,通过测试样品发泡前后的密度计算了膨胀倍率,并探讨了界面相互作用对泡孔结构的影响。结果显示,随着弹性体含量增加,POE和POE-g-MAH的相区尺寸都随之增大,后者的相区尺寸较小;POE和POE-g-MAH含量增加,体系的复数黏度和储能模量也都增大,由于后者与PLA的界面相互作用更强,因此其体系复数黏度和储能模量增大得更显著;当弹性体质量分数为10%和20%时,POE的加入可增强体系的气泡异相成核,因此形成的泡孔尺寸较小,而POE-g-MAH的加入有利于泡孔生长,因此形成的泡孔尺寸较大;在90℃发泡后,PLA/POE-g-MAH10和PLA/POE-g-MAH20发泡材料的膨胀倍率比PLA/POE10和PLA/POE20的更大。

关键词：聚乳酸聚烯烃弹性体马来酸酐接枝聚烯烃弹性体共混体系发泡行为

EXTRACTION OF INTERNAL TIDE FROM CURRENT

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Journal of Hydrodynamics 2001年第3期13卷 138-142页

作者： Pan, zeng-di Han, Chun-Ming Yu, Wei-Dong Key Lab. of Mar. Sci. and Numl. Mode First Inst. of Oceanography State Oceanic Administration Qingdao 266061 China

In order to extract the internal tidal current from the current data which is not measured from the sea surface to the bottom, a data processing method is developed. It is based on the fact that the internal wave currents above and below the sharp thermocline are inverse in direction. This method is a practical extension to that proposed by Shu (1985) that can be only used to quite ideal current data. The ADCP data collected on the South China Sea is then processed by this method. The internal tidal current is successfully extracted.

关键词： Data processing Thermal gradients Tides

Rodent abundance triggered switch between the relative mutualism and predation in a rodent-seed system of the subtropical island forest

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Integrative Zoology 2021年第1期16卷 109-119页

作者： di zeng Tinghao JIN Yuhao ZHAO Chuan YAN Zhibin ZHANG Ping diNG MOE Key Laboratory of Biosystems Homeostasis&Protection College of Life SciencesZhejiang UniversityHangzhouZhejiangChina State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture Institute of ZoologyChinese Academy of Sciences(CAS)BeijingChina Institute of Innovation Ecology Lanzhou UniversityLanzhouGansuChina

Density-dependent non-monotonic species interactions are important in maintaining ecosystem stability and function,but empirical evidences are still ***,as both seed dispersers and seed predators,have dual effects on plant regeneration and may result in non-monotonic rodent-plant *** to the non-monotonic models,the relative positive or negative effects of rodents on seedling establishment can be measured based on the positive or negative association of seedling recruitment rate and rodent *** this study,we investigated the fates of acorns of Quercus serrata by tracking tagged seeds on 21 fragmented subtropical islands in the Thousand Island Lake,*** found that the proportion of germinated seeds of all released seeds showed a dome-shaped association with rodent abundance per *** proportion of removed seeds and cached seeds showed a saturated-and a weak dome-shaped association with rodent abundance per seed,*** results demonstrated a clear empirical evidence that rodent abundance per seed triggered a switch between the relative mutualism and predation in a rodent-seed *** study implied that the observed non-monotonic interactions between plants and animals may play a significant role in maintaining biodiversity and ecosystem *** appeal for more investigations of the complex non-monotonic interactions in various ecosystems.

关键词： ecological non-monotonicity plant-animal interaction relative mutualism or predation rodent abundance per seed

One size fits all? Contract farming among broiler producers in China

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Journal of Integrative Agriculture 2018年第2期17卷 473-482页

作者： HUANG Ze-ying XU Ying zeng di WANG Chen WANG Ji-min Institute of Agricultural Economics and Development Chinese Academy of Agricultural Sciences Centre for Global Food and Resources University of Adelaide

Contract farming has been increasingly found to benefit smallholders in developing countries, yet much less is known about its role in the poultry industry where economies of scale could be more prominent. This study aims to narrow this gap by analysing the choice of contract farming among Chinese broiler producers using a nationally representative survey. Simply cost-benefit analysis and multinomial logit regression modelling are jointly employed to explain contract farming decision making especially among small producers. In contrast to many recent studies, we find that small producers, though not passively excluded, usually opt out of contract farming due to limited profitability when large producers are coexistent. Such relationship is appropriately identified through a control function approach to correct for possible endogeneity. Therefore, contract farming may not help achieve higher welfare goals for small broiler producers who actually instead seek alternative market opportunities that better realise their comparative advantages.

关键词： contract farming broiler price multinomial logit China

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血液成分质控关键指标趋势分析方法的研究

中国卫生标准管理 2024年第16期15卷 146-149页

作者：曾迪孙瑞张玉敏周晓泉贵州省血液中心质量管理科贵州贵阳550002 贵州省血液中心业务信息管理科贵州贵阳550002

目的探讨运用趋势分析的方法在血液质量控制中对血液成分关键指标进行评价。方法选取2023年1—12月贵州省血液中心采集和制备且抽检频次为每月1次的全血及成分血的质控数据,挑选与临床输血疗效相关的指标,采用图表结合界限设置的形式进... 详细信息

目的探讨运用趋势分析的方法在血液质量控制中对血液成分关键指标进行评价。方法选取2023年1—12月贵州省血液中心采集和制备且抽检频次为每月1次的全血及成分血的质控数据,挑选与临床输血疗效相关的指标,采用图表结合界限设置的形式进行趋势分析。结果未能100%符合《全血及成分血质量要求》的关键指标有红细胞比容(hematocrit,Hct)、Ⅷ因子含量、血浆蛋白含量、血小板计数,但其每月质控抽检的数据结果满足符合率75%的质控范围;病毒灭活冰冻血浆亚甲蓝残留量项目质控抽检结果曲线距警戒限较远;单采血小板血小板含量项目有8次偏离数据(警戒限),冷沉淀凝血因子有5次偏离数据(警戒限)。结论依据不同血液成分选取相应关键指标进行连续性趋势分析,是及时发现异常、监测采供血过程稳定性的一种参考方法。

关键词：血液成分关键指标趋势分析质量控制预防措施影响因素

Research on Risk Identification and Industrial Governance of digital Education Products Based on Data Annotation Technology

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China Communications 2024年第3期21卷 273-282页

作者： Tong Lili zeng Jia di Ying Wang Nan Faculty of Education Beijing Normal University Beijing 100875China China Unicom Beijing 102211China

The social transformation brought aboutby digital technology is deeply impacting various *** education products, with core technologiessuch as 5G, AI, IoT (Internet of Things),etc., are continuously penetrating areas such as teaching,management, and evaluation. Apps, miniprograms,and emerging large-scale models are providingexcellent knowledge performance and flexiblecross-media output. However, they also exposerisks such as content discrimination and algorithmcommercialization. This paper conducts anevidence-based analysis of digital education productrisks from four dimensions: “digital resourcesinformationdissemination-algorithm design-cognitiveassessment”. It breaks through corresponding identificationtechnologies and, relying on the diverse characteristicsof governance systems, explores governancestrategies for digital education products from the threedomains of “regulators-developers-users”.

关键词： digital education products industry governance risk identification

Hydrodynamical Basis for Interpreting the Features of a Kind of Ocean Objects on Synthetic Aperture Radar Images

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Chinese Physics Letters 1998年第12期15卷 931-933页

作者： YU Wei-dong HUA Feng JIN Mei-bing PAN zeng-di YUAN Ye-li First Institute of Oceanography State Oceanic AdministrationQingdao 266003

A new hydrodynamical model interpreting the synthetic aperture radar(SAR)imaging of a kind of ocean objects is *** is based on the perturbation analysis of the wave height spectrum balance *** appropriate form of equilibrium wave height spectrum is deduced and then used to obtain the relative variation rate of the spectrum perturbation to its equilibrium *** variation rate reflects directly the features of a kind of ocean objects on the SAR images.

关键词： spectrum Synthetic equilibrium

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改性生物炭固定土壤中重金属机理的研究进展

应用化工 2024年第3期53卷 722-726,730页

作者：毛纪鹏乔怡娜熊健贾梦晔刘娇琴贺增弟晋日亚张晶晶中北大学环境与安全工程学院山西太原030051 西藏大学生态环境学院西藏拉萨850000

固定化是一种降低土壤重金属毒性的有效方法,改性生物炭固定重金属的能力已取得了显著成果,其在土壤修复中得到广泛关注。但改性生物炭在污染土壤中固定重金属的综合机理需进一步探究,因此运用CiteSpace数据分析软件,以氧阴离子型重金... 详细信息

固定化是一种降低土壤重金属毒性的有效方法,改性生物炭固定重金属的能力已取得了显著成果,其在土壤修复中得到广泛关注。但改性生物炭在污染土壤中固定重金属的综合机理需进一步探究,因此运用CiteSpace数据分析软件,以氧阴离子型重金属As和阳离子型重金属Cd为例对改性生物炭固定土壤中重金属的机理进行分析,综述了其氧化还原、表面共沉淀、络合、离子交换及静电吸引的作用机制。对改性生物炭增强固定土壤重金属不同机理的原因和方法进行总结,对其处理土壤重金属污染的前景进行了展望,为改性生物炭治理土壤重金属污染的应用提供参考。

关键词：改性生物炭土壤 As Cd 固定机理