LWF Seehornwald Davos long-term research site
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 This research site is located on the Seehorn mountain near Davos within a managed subalpine coniferous forest in the Swiss Alps. Seehronwald Davos site is dedicated to forest ecosystem research with current projects focusing on topics of climate change, ecosystem carbon balance, ecophysiology, vegetation and soil sciences. The site belongs to one of the best equipped long-term forest ecology research sites of the world. Time series of climate variables, ecosystem gas exchange (eddy covariance), tree physiology records (sap flow, stem radius changes), and air pollution data cover the history of this site over more than 20 years. Records of local climate variables started in 1876. Since 2013 the site is part of [ICOS](https://www.icos-cp.eu), which awarded the infrastructure the CLASS 1 label on 21 November 2019. The site is part of the following national and international networks and encourages further synergistic collaborations with scientists from all over the world: * National Air Pollution Monitoring Network ([NABEL](https://www.empa.ch/web/s503/nabel)) * ICOS Switzerland ([ICOS-CH](https://www.icos-switzerland.ch/davos)) * [TreeNet](https://treenet.info/switzerland/davos): The biological drought and growth indicator network * Long-term Forest Ecosystem Research ([LWF](https://www.wsl.ch/en/forest/forest-development-and-monitoring/long-term-forest-ecosystem-research-lwf/sites/davos.html)) * [Swiss FluxNet](https://www.swissfluxnet.ethz.ch/index.php/sites/ch-dav-davos/site-info-ch-dav) * Ecosystem Research ([ExpeER](http://www.expeeronline.eu/43-expeer-ta-sites/131-davos-seehornwald-switzerland.html)) * Long Term Ecological Research ([LTER](https://www.lter-europe.net)) * [ICP Forests](http://icp-forests.net): the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests The site measurements are jointly run by the Swiss Federal Laboratories for Materials Science and Technology ([EMPA](https://www.empa.ch)), the Swiss Federal Institute of Technology Zurich ([ETHZ](https://www.gl.ethz.ch)), and the Swiss Federal Research Institute ([WSL](https://www.wsl.ch)) in Birmensdorf and Davos. The infrastructure is provided by the Federal Office of Environment ([FOEN](https://www.bafu.admin.ch/bafu/en/home/topics/air/state/data/national-air-pollution-monitoring-network--nabel-.html)). All partners are grateful to forest owners and to the forestry service of the community of Davos for their continuous support. LWF Plot Davos - Community: Davos / canton GR - Date of installation: 15.06.2006 - Size of the plot: 0.6 ha - Altitude: : 1635-1665 - Geology (in German): Untergrund: - Oberfläche: - Provisional soil type (WSL): - Woodland association after EK72: 58: Larici-Piceetum - Main tree species: Picea abies - Management system: high forest - Silvicultural system: group selection - Top-height diameter (quadratic average diameter of the 100 thickest trees per ha): 47.0 cm - Number of trees BHD >= 12 cm (2006): 498 - Maximum tree age: Picea abies: 200 - 390 yr
 本研究站点坐落于瑞士阿尔卑斯山区达沃斯附近的泽霍恩（Seehorn）山，地处一处经营型亚高山针叶林内。达沃斯Seehornwald站点致力于森林生态系统研究，当前研究项目聚焦气候变化、生态系统碳平衡、生态生理学、植被与土壤科学等方向。该站点是全球装备水平最高的长期森林生态学研究站点之一。气候变量时间序列、生态系统气体交换（涡度协方差（eddy covariance））、树木生理记录（树干液流、茎干半径变化）以及空气污染数据，完整覆盖了该站点二十余年的监测历程。当地气候变量的监测记录始于1876年。自2013年起，该站点成为ICOS（综合碳观测系统（Integrated Carbon Observation System））的成员站点，并于2019年11月21日获得该体系授予的CLASS 1等级认证。该站点隶属于以下国内及国际网络，并欢迎与全球各地的科研人员开展更多协同合作： * 国家空气污染监测网络（National Air Pollution Monitoring Network，缩写NABEL） * 瑞士综合碳观测系统（ICOS Switzerland，缩写ICOS-CH） * 树木干旱与生长生物监测网络（TreeNet）：针对生物干旱与生长指标的监测网络 * 长期森林生态系统研究网络（Long-term Forest Ecosystem Research，缩写LWF） * 瑞士通量观测网络（Swiss FluxNet） * 生态系统研究网络（Ecosystem Research，缩写ExpeER） * 长期生态研究网络（Long Term Ecological Research，缩写LTER） * 森林国际合作监测计划（ICP Forests）：针对空气污染对森林影响的评估与监测国际合作项目 该站点的监测工作由瑞士联邦材料科学与技术研究所（Swiss Federal Laboratories for Materials Science and Technology，缩写EMPA）、苏黎世联邦理工学院（Swiss Federal Institute of Technology Zurich，缩写ETHZ）以及位于比尔门斯多夫与达沃斯的瑞士联邦森林、雪与景观研究所（Swiss Federal Research Institute WSL，缩写WSL）联合开展。该监测基础设施由瑞士联邦环境办公室（Federal Office of Environment，缩写FOEN）提供。所有合作方谨向森林所有者以及达沃斯社区的林业部门致以谢意，感谢其长期以来的支持。 达沃斯LWF样地 - 所属社区：达沃斯/格劳宾登州（canton GR） - 建立日期：2006年6月15日 - 样地面积：0.6公顷 - 海拔：1635-1665米 - 地质情况（德语原文）：地下层：- 地表层： - 暂定土壤类型（WSL）： - 依据EK72标准划分的森林群落类型：58：落叶松-云杉林（Larici-Piceetum） - 主要树种：欧洲云杉（Picea abies） - 经营体系：乔林经营 - 营林体系：团状择伐 - 优势木平均胸径（每公顷100株最粗树木的二次平均胸径）：47.0厘米 - 胸径≥12厘米的树木数量（2006年）：498株 - 最大树龄：欧洲云杉：200-390年
