The information system of the French Peatland Observation Service: Service National d'Observation Tourbières – A valuable tool to assess the impact of global changes on the hydrology and biogeochemistry of temperate peatlands through long term monitoring     

Sébastien Gogo  Jean-Baptiste Paroissien  Fatima Laggoun-Défarge  Jean-Marc Antoine  Léonard Bernard-Jannin  Guillaume Bertrand  Philippe Binet  Stéphane Binet  Guillaume Bouger  Yohann Brossard  Thierry Camboulive  Jean-Pierre Caudal  Stéphane Chevrier  Geneviève Chiapiuso  Benoît D'Angelo  Pilar Durantez  Chris Flechard  André-Jean Francez  Didier Galop  Laure Gandois  Daniel Gilbert  Christophe Guimbaud  Louis Hinault  Adrien Jacotot  Franck Le Moing  Emilie Lerigoleur  Gaël Le Roux  Fabien Leroy  Alexandre Lhosmot  Qian Li  Elodie Machado Da Silva  Jean-Sébastien Moquet  Juanita Mora-Gomez  Laurent Perdereau  Thomas Rosset  Marie-Laure Toussaint 《水文研究》2021,35(6):e14244

Mitigating and adapting to global changes requires a better understanding of the response of the Biosphere to these environmental variations. Human disturbances and their effects act in the long term (decades to centuries) and consequently, a similar time frame is needed to fully understand the hydrological and biogeochemical functioning of a natural system. To this end, the ‘Centre National de la Recherche Scientifique’ (CNRS) promotes and certifies long-term monitoring tools called national observation services or ‘Service National d'Observation’ (SNO) in a large range of hydrological and biogeochemical systems (e.g., cryosphere, catchments, aquifers). The SNO investigating peatlands, the SNO ‘Tourbières’, was certified in 2011 ( https://www.sno-tourbieres.cnrs.fr/ ). Peatlands are mostly found in the high latitudes of the northern hemisphere and French peatlands are located in the southern part of this area. Thus, they are located in environmental conditions that will occur in northern peatlands in coming decades or centuries and can be considered as sentinels. The SNO Tourbières is composed of four peatlands: La Guette (lowland central France), Landemarais (lowland oceanic western France), Frasne (upland continental eastern France) and Bernadouze (upland southern France). Thirty target variables are monitored to study the hydrological and biogeochemical functioning of the sites. They are grouped into four datasets: hydrology, fluvial export of organic matter, greenhouse gas fluxes and meteorology/soil physics. The data from all sites follow a common processing chain from the sensors to the public repository. The raw data are stored on an FTP server. After operator or automatic processing, data are stored in a database, from which a web application extracts the data to make them available ( https://data-snot.cnrs.fr/data-access/ ). Each year at least, an archive of each dataset is stored in Zenodo, with a digital object identifier (DOI) attribution ( https://zenodo.org/communities/sno_tourbieres_data/ ).  相似文献   

Environmental changes in the north‐east Sunda region over the last 40 000 years     

Chuanxiu Luo  Simon Haberle  Zhuo Zheng  Rong Xiang  Chixin Chen  Gang Lin  Kumar Sazal 《第四纪科学杂志》2019,34(3):245-257

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2016年秋季热带西太平洋网采浮游植物群落结构   总被引：1，自引：0，他引：1  

陈卓  孙军  张桂成 《海洋科学》2018,42(7):114-130

作者于2016年9月27日～10月25日对热带西太平洋(0°～20°N, 120°～130°E)10个站位的网采浮游植物群落结构进行了采样调查。应用Uterm?hl方法对调查海域浮游植物的物种组成、细胞丰度、优势物种以及群落多样性等相关生态特征进行了分析。希望为热带西太平洋提供一些基础的背景资料,为以后的研究奠定基础。结果表明, 鉴定出浮游植物共计4门、66属、243种(包括变种、变型), 含硅藻门(Bacillariophyta)34属、103种, 甲藻门(Pyrrophyta)28属、133种, 金藻门(Chrysophyta)2属、4种,蓝藻门(Cyanophyta)2属、3种。浮游植物细胞丰度1 965.573×10³ 细胞/m³ , 其中蓝藻的细胞丰度为1 945.169×10³ 细胞/m³ , 决定了浮游植物的分布格局, 占总细胞丰度的98.96%, 高值区分布在0°N130°E-10°N130°E的4个站位(E130-13、E130-15、E130-17、E130-19); 硅藻丰度在20°N断面N20-4站位存在高值区; 甲藻丰度在130°E断面的3个站位(E130-10、E130-13、E130-15)存在高值区。本次调查的优势种依次为铁氏束毛藻(Trichodesmium thiebaultii)、扁形原甲藻(Prorocentrum compressum)、扁豆原甲藻(Prorocentrum leniculatum)、胞内植生藻(Richelia intracellularis)、菱形海线藻(Thalassionema nitzschioides)、细弱海链藻(Thalassiosira subtilis)、具边线形圆筛藻(Coscinodiscus marginato-lineatus)、科氏角藻(Ceratium kofoidii)、鲁比膝沟藻(Gonyaulax lurbynaii)、中华半管藻(Hemiaulus sinensis)、霍氏半管藻(Hemiaulus hauckii)、小等刺硅鞭藻(Dictyocha fibula)。Shannon-Weiner多样性指数的均值为2.440,Pielou 均匀度指数的均值为0.163。相关分析结果显示浮游植物空间分布主要受PO₄-P、NH₄-N的影响,且由蓝藻的相关性决定的。聚类分析得出群落结构分为大洋群聚和近岸群聚两种类型(其中大洋群聚的站位又划分为0°～10°N纬度范围聚集和10°～20°N纬度范围聚集)。  相似文献   

The Characteristic Patterns of Macrofaunal Fouling Assemblages in Nearshore Waters of the South China Sea     

Xin Chen  Qiuyu Liu  Wen Zhuo  Wenjuan Liu  Ziwei Li  Min Tang 《中国海洋大学学报(英文版)》2018,17(5):1142-1148

The spatio-temporal patterns of macrofaunal fouling assemblages were quantitatively investigated in the nearshore waters of the South China Sea. The work was undertaken by deploying seasonal panels at two sites (H-site, L-site) for one year, and the fouling communities on the panels were examined and analyzed. The results indicated that species composition of assemblages was obviously different between the two sites. At both sites the assemblages were characteristic with solitary dominant species throughout the year, with Amphibalanus reticulates dominating at H-site and Hydroides elegans at L-site. Shannon index and biomass of the assemblages varied with depth and season at both sites. At H-site the total biomass in summer and autumn were significantly higher than those in spring and winter, while at L-site the assemblage biomass also differed significantly among the four seasons, and the greatest biomass occurred at the depth of 2.0 m in winter. The abundance of all seasonal samples in non-metric multidimensional scaling was clustered as one group at L-site and three groups at H-site. The environmental factors were more likely to be related to the variation of fouling assemblages. Furthermore, it also suggests that in tropical seas the integrated adaptability would qualify a species for dominating a fouling assemblage despite its short life cycle, rather than the usually assumed only species with long life span. This study reveals the complexity and characteristic dynamics of macrofaunal fouling assemblages in the tropical habitats, and the results would provide valuable knowledge for biodiversity and antifouling research.  相似文献   

厦门市震情灾情分析和输出系统     

潘震宇  卓群  方伟华 《地震地磁观测与研究》2018,39(4):200-207

厦门市地震局利用Arcgis平台开发震情灾情分析和输出系统，该系统具有用户管理、震情灾情信息汇总、震情灾情信息查询与分析、震情灾情信息输出4大功能。通过该系统，地震应急和指挥部门能充分利用震情灾情信息进行相关科学研究，并为政府提供科学的救灾决策依据。  相似文献   

吉林测震台网地震记录仿真前后震级对比分析     

陈聪  陈卓  张帆 《地震地磁观测与研究》2018,39(5):76-80

选取2013-2017年吉林测震台网记录的部分地震，按测震台网运行管理细则对地震编目的要求，需对地震波形进行WA仿真处理后测量震级。对比仿真前后震级，发现仿真后量取的震级普遍较大，偏差在0.3以内。因此，地震编目需严格按照细则执行，地震速报使用仿真震级更加准确，而且掌握震级偏差可为新旧震级资料的连续性提供参考依据。  相似文献   

岩石膨胀性试验注意事项探讨     

刘军  谷莉  郭程  卓慧英 《岩土工程技术》2020,(2):117-121

从室内试验的角度来探讨几类工程勘察中岩石常用膨胀性试验(自由膨胀率、膨胀力、侧向约束膨胀率、耐崩解)的注意事项,从野外取样、标准样品制取、试验操作、方法选择等方面进行了论述,力求减小试验误差,提高膨胀岩的试验水平,保证试验结果的准确性,并使膨胀岩膨胀性指标的测定方法更臻完善。  相似文献   

Spatiotemporal heterogeneity and influencing mechanism of ecosystem services in the Pearl River Delta from the perspective of LUCC     

Zhou  Rubo  Lin  Meizhen  Gong  Jianzhou  Wu  Zhuo 《地理学报(英文版)》2019,29(5):831-845

Journal of Geographical Sciences - Land use/land cover change (LUCC) has considerable impact on ecosystem services. It is essential to quantify the spatiotemporal heterogeneity of ecosystem...  相似文献   

贵州罗甸纳饶剖面石炭系维宪阶-谢尔普霍夫阶界线附近的有孔虫     

盛青怡  王秋来  祁玉平  廖卓庭 《地层学杂志》2021,45(1):1-10

贵州罗甸纳庆剖面是竞争谢尔普霍夫阶底界全球界线层型剖面和点位的最有力候选剖面之一.纳饶剖面紧邻纳庆剖面,是其辅助剖面.纳饶剖面维宪阶-谢尔普霍夫阶(Viséan-Serpukhovian)界线层段的牙形刺生物地层已经初步建立,可与纳庆剖面直接对比.纳饶剖面V/S界线位于41.8 m处,是以牙形刺演化谱系L.nodosa-L.ziegleri中L.ziegleri的首现来定义的.本研究报道了这一界线层段的有孔虫化石.界线附近共识别出有孔虫23属28种,建立了两个有孔虫带,自下而上分别是Asteroarchaediscus rugosus带和Janischewskina delicata带.A.rugosus带是维宪最晚期的有孔虫带.J.delicata带是谢尔普霍夫初期的有孔虫带,以44 m处J.delicata的首现为标志.纳饶剖面V/S界线2.2 m内同时出现了谢尔普霍夫阶底界标志性的牙形刺和有孔虫,为该界线附近牙形刺和有孔虫的对比提供了重要依据.  相似文献   

哈尔滨市地下水中29种抗生素分布特征研究   总被引：1，自引：1，他引：0  

马健生  王卓  张泽宇  刘强  李丽君 《岩矿测试》2021,(6):944-953

当前对抗生素滥用监管及其研究正在加强,近年来中国主要水域中抗生素均有不同程度的检出,地表水及地下水中抗生素的污染状况持续受到关注。因进入环境中的抗生素种类繁多、结构复杂,一般实验室难以实现同时分析多种类抗生素。本文在哈尔滨市共采集地下水样品26组,采样范围包括人口密集、工业生产、农畜业等生活生产地区。利用超高效液相色谱-三重四极杆串联质谱联用技术分析了样品中的磺胺类、喹诺酮类、大环内酯类、β-内酰胺类、四环素类、林可酰胺类等6大类共29种典型抗生素含量,研究了哈尔滨市地下水中典型抗生素的检出及分布状况。结果表明：①哈尔滨市地下水中6大类典型抗生素均有不同程度检出,其中以磺胺类、喹诺酮类、大环内酯类、四环素类为主,检出率分别为61.5%、46.2%、42.3%、38.5%;②哈尔滨市地下水检出的抗生素含量范围在0.02～612ng/L之间,其中磺胺噻唑、磺胺嘧啶、林可霉素检出的最高浓度超过100ng/L,相比于国内外部分地区（如中国北京、天津,西班牙巴塞罗那）喹诺酮类整体含量偏低;③检出抗生素含量较高的采样点位主要分布在城市的中部、南部和东部地区,这些区域也是该市人口相对密集区,且附近普遍分布有制药厂、家禽牲畜养殖厂、城市排污口等。由此揭示了哈尔滨市城市地下水中抗生素分布特征受人类生产生活活动影响且具有明显的相关性。  相似文献