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安徽界首两湾国家湿地公园浮游植物群落结构特征研究

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安徽林业科技 2024年第4期50卷 20-25页

作者：李峰袁亚强周博涵周忠泽界首市园林管理处安徽阜阳236500 安徽大学资源与环境工程学院安徽合肥230601

为研究安徽界首两湾国家湿地公园浮游植物群落结构特征,以及环境因子对浮游植物群落结构的影响,在2023年5月、8月、10月,2024年1月进行4次采样调查。结果显示,该湿地公园有浮游植物8门60属101种,其中绿藻门最多,有54种;其次是硅藻门,有2... 详细信息

为研究安徽界首两湾国家湿地公园浮游植物群落结构特征,以及环境因子对浮游植物群落结构的影响,在2023年5月、8月、10月,2024年1月进行4次采样调查。结果显示,该湿地公园有浮游植物8门60属101种,其中绿藻门最多,有54种;其次是硅藻门,有24种;再次是蓝藻门,有12种。主要的优势种有绿藻门小球藻、四尾栅藻、肥壮蹄形藻,蓝藻门小席藻、小形色球藻、细小平裂藻,硅藻门颗粒直链藻、尖针杆藻、梅尼小环藻,小环藻等。浮游植物群落表现出显著的季节性差异,在夏季大量繁殖,在温度较低的冬季丰度最低。RDA结果表明,温度、电导率、透明度、pH值、水深是影响浮游植物丰度的关键影响因子。Mantel分析表明,温度对4类主要浮游植物都有显著性的影响,是影响浮游植物的关键性因素。本研究旨在为未来安徽界首两湾国家湿地公园的保护和修复提供基础数据。

关键词：浮游植物群落结构环境因子国家湿地公园

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面向足底压力优化的全接触矫形鞋垫设计

图学学报 2024年第4期45卷 868-878页

作者：黄昱喆王旭鹏陈文会周中泽赵嘉鑫王芸倩西安理工大学艺术与设计学院陕西西安710048 西安理工大学机械与精密仪器工程学院陕西西安710048

为优化足底压力分布、降低足底峰值压力,提出一种基于三维足部模型的全接触矫形鞋垫参数化设计方法。以足底压力数据为基础,结合三维晶格结构分析,对鞋垫的减压结构进行优化。首先,利用足部三维扫描模型,通过Grasshopper插件平台开发全... 详细信息

为优化足底压力分布、降低足底峰值压力,提出一种基于三维足部模型的全接触矫形鞋垫参数化设计方法。以足底压力数据为基础,结合三维晶格结构分析,对鞋垫的减压结构进行优化。首先,利用足部三维扫描模型,通过Grasshopper插件平台开发全接触鞋垫模型参数化设计流程,实现全接触鞋垫的个性化设计。其次,在Abaqus环境下,对TPU材质的六种常见三维立方晶格结构进行能量吸收效率的分析,计算不同填充率下“金刚石”晶格结构的有效弹性模量,评估不同晶格结构在吸收足底压力时的性能,为减压结构的选择提供科学依据。然后,利用图像采样算法提取足底压力较大的区域,选择相应的有效弹性模量结构进行填充,完成全接触矫形鞋垫优化设计,并通过仿真分析对比优化前后矫形鞋垫的减压性能。最后,通过静态和动态足底压力测量实验,证明基于足形和三维减压结构设计的个性化矫形鞋垫可以有效优化足底压力分布、卸载足底压力峰值和提高足部稳定性。

关键词：足底压力优化矫形鞋垫参数化设计三维晶格结构

Quantitative indicative significance of pollen assemblages on vegetation coverage in deciduous Quercus forest in the central Loess Plateau, China

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Science China Earth Sciences 2019年第6期62卷 992-1001页

作者： Yuanhao SUN Shengrui ZHANG Qinghai XU Yiwen LI Wei SHEN Tao WANG zhongze zhou Ruchun ZHANG College of Resources and Environment Sciences Hebei Key Laboratory of Environmental Change and Ecological ConstructionHebei Normal University Institute of Nihewan Archaeology Hebei Normal University College of Resources and Environment Anhui University Institute of Geographical Science Hebei Academy of Sciences

We compared the pollen assemblages of surface moss samples and corresponding vegetation inventory data from 34 sites in the Huangling region of the central Loess Plateau. Our aims were to determine the characteristics of the pollen assemblages from the deciduous broadleaved forest climax community and its significance in terms of vegetation type and species composition. The pollen assemblages are dominated by woody plants such as Quercus(42% of total terrestrial pollen),Betula(16%) and Pinus(12%), with minor differences between different plant communities. The pollen assemblages of individual sampling sites differed from the vegetation composition within the 0–100 m scope and were more similar to the vegetation coverage within the 0–1000 m scope. This indicates that the surface pollen assemblages mainly reflect the comprehensive information from the vegetation composition of a large area, rather than the vegetation composition close to the sampling site. The contents of Quercus, Betula and Pinus pollen are high, and close to their vegetation coverage; whereas the contents of deciduous broadleaved arbor taxa(such as Malus and Acer) are lower, but their corresponding regional vegetation cover is higher. This suggests that the vegetation information conveyed by poorly-represented pollen taxa should be considered when interpreting stratigraphic pollen assemblages. Using the observed quantitative relationships between pollen and vegetation of the main taxa, we reconstructed the regional vegetation composition in the Gonghai Lake area of the northeastern Loess Plateau during the middle Holocene(7300–5000 yr BP). The results indicated that Quercus-dominated deciduous broadleaved forest climax community developed in the mountains surrounding the lake.

关键词： Loess Plateau Deciduous broadleaved forest Climax community Pollen assemblage Absolute vegetation coverage

Palaeoecological and palaeoenvironmental significance of someimportant spores and micro-algae in Quaternary deposits

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Chinese Science Bulletin 2013年第20期58卷 3125-3139页

作者： TANG LingYu MAO LiMi Lü XinMiao MA QingFeng zhou zhongze YANG ChunLei KONG ZhaoChen BATTEN David J State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences University of Chinese Academy of Sciences School of Resources and Environmental Engineering Anhui University Institute of Botany Chinese Academy of Sciences School of Earth Atmospheric and Environmental Sciences University of Manchester

Spores of ferns and allied plants, and micro-algae frequently occur in abundance in Quaternary deposits, but their palaeoenvironmental significance is seldom evaluated. This paper presents morphological descriptions of spores of Selaginella sinensis (Desv.) Spring, 1843 (Selaginellaceae) and Ceratopteris cf. thalictroides (L.) Brongniart, 1821 (Parkeriaceae) and the algae Pediastrum boryanum (Turpin) Meneghini, 1840, P. simplex Meyen, 1829, P. integrum N geli, 1849 (all Hydrodictyaceae), Spiniferites Mantell, 1850, emend. Sarjeant, 1970 (Spiniferitaceae) and Concentricystes Rossignal, 1962, emend. Jiabo, 1978 (systematic position unclear), and discusses their occurrence in mostly Quaternary sedimentary successions. All are closely associated with aquatic habitats. Extant Selaginella sinensis often colonizes fairly wet hillsides and gaps between rocks, and shady sides of ravines and slopes; it is also found within thickets of trees and shrubs (boscages) and in forests with calcareous soils. Ceratopteris thalictroides, Pediastrum and Concentricystes inhabit freshwater lakes and both natural and artificial wetlands, such as paddy fields and ditches. Spiniferites is a salt-water genus and usually associated with the marine realm. Fossil and subfossil representatives of all of these taxa can be useful proxies of biodiversity and, therefore, also important for determining environmental conditions during the Quaternary period.

关键词：第四纪沉积物古环境意义微型藻类孢子形态古生态蕨类植物石灰性土壤生物多样性

Origin area and migration route: Chloroplast DNA diversity in the arctic-alpine plant Koenigia islandica

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Science China Earth Sciences 2014年第8期57卷 1760-1770页

作者： LONG Cong MIN YunJiang ZHAO XiuXia YANY ChunLei SUN Hang Lü HouYuan TANG LingYu zhou zhongze School of Resources and Environmental Engineering Anhui University Anhui Biodiversity Information Center Department of Biological and Pharmaceutical Engineering West Anhui University Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences Institute of Geology and Geophysics. Chinese Academy of Sciences Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences

The Hengduan Mountains(henceforth H-D Mountains) on the Tibet Plateau are a distribution and diversity center for many alpine genera. We examine patterns of genetic variation in an arctic-alpine plant to evaluate the possibility that the H-D Mountains constitute the area of origin of the species as well as to uncover postglacial migration routes. 220 individuals of the arctic-alpine plant Koenigia islandica were sampled from 26 populations distributed in western China and northern Finland. DNA haplotypes were identified using restriction site analysis of two chloroplast DNA intergene spacer regions, atpB-rbcL and trnL-trnF. We examined the geographical distribution of haplotype diversity in relation to latitude, and also compared various indices of diversity in putatively glaciated and unglaciated regions. Patterns of migration were inferred using nested clade analysis. A total of 25 haplotypes were detected. High haplotype diversity was found in the H-D Mountains. H3 and its radiated haplotypes were distributed in the Himalayas. Two haplotypes were fixed concurrently in the H-D Mountains and northern Finland. High genetic diversity of K. islandica and high species diversity of K. islandica are expected in the origin area. Our observations suggest that the H-D Mountains are not only the place of origin of K. islandica, but also the refugia for K. islandica on the Tibet Plateau. What is more, the migration route for the arctic-alpine plant K. islandica must have originated in the region defined by the H-D Mountains in western China extending northward to the Arctic circumpolar, and moved westward along the Himalayas, then northward across the Altay Mountains and the Central Siberian Plateau at different time periods.

关键词： origin area refugia migration route phylogeography biogeology Koenigia islandica

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2-芳基喹唑啉衍生物的合成

山东化工 2024年第7期53卷 20-23页

作者：李天宇周忠泽李淑芳刘天宇张习云王洪林荆楚理工学院化工药学院湖北荆门448000

喹唑啉类化合物作为药物研发中的优势骨架结构,被广泛用于抗肿瘤药物的研究开发中。尤其是2-取代喹唑啉类化合物具有多种生理活性,其衍生物的设计合成引起了广大科研工作者的关注。本研究以邻氨基苄胺为起始原料,和不同的芳基醛反应,在... 详细信息

喹唑啉类化合物作为药物研发中的优势骨架结构,被广泛用于抗肿瘤药物的研究开发中。尤其是2-取代喹唑啉类化合物具有多种生理活性,其衍生物的设计合成引起了广大科研工作者的关注。本研究以邻氨基苄胺为起始原料,和不同的芳基醛反应,在碱性条件下,一锅法得到4种2-芳基取代喹唑啉类化合物,目标产物结构经^(1)H NMR确证。

关键词： 2-芳基喹唑啉合成

维普期刊数据库博看期刊

Allelopathic effects of extracts from Carex thunbergii on three Gramineae species

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Allelopathic effects of extracts from Carex thunbergii on th...

淮南迪沟采煤沉陷区湖泊后生浮游动物群落结构及其影响因子

中国第九届植物化感作用学术研讨会

作者： ZHANG Jinyu zhou zhongze YE Xiaoxin School of Resources and Environmental Engineering Anhui University

To reveal the mechanism of the vegetation community in water-fluctuating zone of Yangtze river-lake floodplain gradually evolving into a single dominant species with Carex thunbergii and to disclose the association between plant community and allelopathy,this work studied the impact of *** on seed germination,seedling growth and antioxidase activity of three accompanying Gramineae species(Lolium perenne,Cynodon dactylon,Phalaris arundinacea).The result show that *** extracts had significantly inhibitory effect on the germination rate,germination potential,radicle and germ length of three accompanying *** germination inhibition rates of receiver plant was higher than 95% at concentration of 100 g·*** low concentration of *** methanol extract on the *** have a promoting *** germination rate of *** withmethanol extract of 1 g·L concentration treated increased by 0.6% and 1.9%,and change with concentration in the germination rate of *** radicle and germ length of *** were reduced by 60.6% and 17.8% after treated with methanol extract of 10 g·L *** the same concentration,the *** methanol extracts was more effective than aqueous *** growth was significantly affected by the extracts,the root-leaf ratio was significantly decrease than *** content of MDA in *** and *** increased with increasing concentration of *** content in root of *** increased rapidly when the concentration of root extract and leaf extract reached 10 g·L,and reached the maximum at 20 g·L,which was 4.7 times and 5.1 times as much as that of the *** activities of SOD and POD in *** raise first and then *** activity of SOD in *** leaves increased but lower than control in *** has allelopathic inhibition effect on germination and growth of three *** findings indicated that allelopathy plays an essential role in the formation

关键词： Carex thunbergii water-level fluctuation zone allelopathy wetland dominant species

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湖泊科学 2018年第1期30卷 171-182页

作者：林志万阳徐梅汪晨琛吴奇丽周忠泽安徽大学资源与环境工程学院合肥230601

2015年8月-2016年6月对安徽省迪沟采煤沉陷区湖泊后生浮游动物群落结构及环境因子进行了调查,研究了其群落结构及与环境因子的关系.共发现后生浮游动物16科27属53种,其中轮虫38种,枝角类9种,桡足类6种,优势种为萼花臂尾轮虫(Brachionus ... 详细信息

2015年8月-2016年6月对安徽省迪沟采煤沉陷区湖泊后生浮游动物群落结构及环境因子进行了调查,研究了其群落结构及与环境因子的关系.共发现后生浮游动物16科27属53种,其中轮虫38种,枝角类9种,桡足类6种,优势种为萼花臂尾轮虫(Brachionus calyciflorus)、角突臂尾轮虫(***)、蒲达臂尾轮虫(***)、针簇多肢轮虫(Polyarthra trigla)、曲腿龟甲轮虫(Keratella valga)、螺形龟甲轮虫(***)、长额象鼻溞(Bosmina longirostris)和透明温剑水蚤(Thermocyclops hyalinus).密度和生物量平均值分别为965.00±541.91 ind./L和3.42±2.17 mg/L.密度峰值出现在2015年2月,而生物量峰值出现在10月,最低值均出现在12月.后生浮游动物密度的空间分布呈现西低东高的趋势,而生物量空间分布呈现西高东低的趋势.Shannon-Wiener多样性指数、Margalef丰富度指数和Pielou均匀度指数分别为2.07~3.22、0.83~1.72和0.67~0.80.冗余分析及Pearson相关性分析结果表明,浮游植物生物量、水温、营养盐等是影响后生浮游动物群落结构的主要因子.综合理化指标、营养状态指数、后生浮游动物优势种及生物多样性指数结果表明,迪沟采煤沉陷区湖泊已处于轻度富营养状态.

关键词：后生浮游动物群落结构环境因子采煤沉陷区生态修复湖泊

我国特有珍稀濒危植物银缕梅(Parrotia subaequalis)的花粉形态研究

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微体古生物学报 2020年第1期37卷 99-104页

作者：刘明珍朱斌袁素强周忠泽皖西学院材料与化工学院六安237012 岳西县黄尾镇林业站安庆246600 安徽大学资源与环境工程学院合肥230601

采用光学显微镜和扫描电镜对产自安徽省大别山金缕梅科银缕梅(Parrotia subaequalis)的花粉进行了观察和研究。银缕梅花粉粒近球形或长球形,P/E(极轴/赤道轴)=1.27(1.14-1.32),赤道面观椭圆形,极面观圆三角形或三裂圆形,大小为37.3(32.0... 详细信息

采用光学显微镜和扫描电镜对产自安徽省大别山金缕梅科银缕梅(Parrotia subaequalis)的花粉进行了观察和研究。银缕梅花粉粒近球形或长球形,P/E(极轴/赤道轴)=1.27(1.14-1.32),赤道面观椭圆形,极面观圆三角形或三裂圆形,大小为37.3(32.0~41.0)×29.4(25.0~36.0)μm。具3沟,沟狭长,几达两极。花粉外壁厚2.0~2.4μm,外层与内层近等厚,柱状层基柱发达。外壁纹饰在光镜下为细网状,在扫描电镜下为粗网状纹饰,网脊上有刺瘤。现生银缕梅具有鲜明的生境和分布格局特点,本研究为利用地层中银缕梅化石花粉重建古环境、古气候等提供了现代孢粉学参考依据,也为研究金缕梅科的起源、演化和现代地理分布提供了科学依据。

关键词：银缕梅花粉形态生态因子安徽省