Vegetation samples at the permanent plots of LTER site "Appennino Centrale: Velino-Duchessa" (1993-2023)

The present dataset comprises observations spanning from 1993 to 2023, focusing on biotic parameters collected from six permanent plots included into the LTER site “Appennino Centrale: Velino-Duchessa” (https://deims.org/12c79ecb-7890-4b75-9655-0883dacd8a29), located in Central Italy above the timberline (2125-2225 m a.s.l.). Specifically, it includes a synthesis of phytosociological relevés collected, according the Braun-Blanquet approach (coverage scale as modified by Pignatti) in 6 permanent plots of 10x10 m (https://deims.org/dataset/0c540fe8-1984-11e5-a766-005056ab003f), representative of two high-elevation plant communities (alpine tundra, Saxifrago speciosae-Silenetum ceniasiae, and snow-bed grassland, Trifolio thalii-Festucetum microphyllae). Species are named according to Flora d'Italia (Pignatti, 1982). The site, managed by Carabinieri, Forest and Environmental Protection Department, is part of the site “IT01- Apennines - High elevation Ecosystems – Italy” (https://deims.org/70b5c2bd-b0c3-4132-8988-f527893bfa42) which belongs to the Long Term Ecological Research national and international networks (LTER-Italy, LTER-Europe and ILTER). The data collection started in 1993 and it is continuously updated every year.本数据集涵盖1993年至2023年的观测数据，聚焦于意大利中部“中央亚平宁：韦利诺-杜切萨”LTER（Long Term Ecological Research，长期生态研究）站点（https://deims.org/12c79ecb-7890-4b75-9655-0883dacd8a29）内6个永久样地采集的生物参数，该站点位于林线以上（海拔2125-2225米）。具体而言，本数据集整合了依照布劳恩-布朗奎特（Braun-Blanquet）法（采用皮纳蒂修订的覆盖度分级标准）在6个10×10米永久样地中开展的植物社会学样方调查数据（https://deims.org/dataset/0c540fe8-1984-11e5-a766-005056ab003f），这些样地代表了两种高海拔植物群落：高山冻原（Saxifrago speciosae-Silenetum ceniasiae）与雪生草地（Trifolio thalii-Festucetum microphyllae）。物种命名依据《意大利植物志》（Flora d'Italia，皮纳蒂，1982）。该站点由意大利宪兵队森林与环境保护部门管理，隶属于“IT01-亚平宁山脉-高海拔生态系统-意大利”站点（https://deims.org/70b5c2bd-b0c3-4132-8988-f527893bfa42），该站点属于国家级与国际级长期生态研究网络（LTER-意大利、LTER-欧洲以及国际长期生态研究网络（ILTER））的组成部分。本数据集的采集工作始于1993年，且每年持续更新。