Reindeer pasture inventory data from northernmost Finland

The reindeer pasture inventory field data collected by Natural Resources Institute Finland contains 617 permanent field sites located in 20 northernmost reindeer herding co-operatives in Finland and studied during two pasture inventories during summers 2006-2008 and 2016-2018. These permanent field sites are placed in the nutrient poor dry or semi-dry lichen (Cladina spp.) type winter pastures by the semi-domesticated reindeer located in the areas grazed by reindeer either only in winter or in summer, or then in both seasons. Depending on the area, the ground lichen pastures are in pine or mountain birch forests or then in open mountain heaths. During both inventories, the same straight line containing 10 ground plants squares (size 0.25 m2) and 10 vegetation and tree circles (radius 3.99 m) were studied in each site. Coverages and heights of different lichens and dwarf shrubs as well as coverage mosses were evaluated in each vegetation square. The vegetation and forest type and tree canopy cover in each field site were evaluated estimating it either in the whole site area or separately in each circle. Climate variables were calculated from the Finnish Meteorological Institutes gridded daily climatology data set (https://doi.org/10.1002/2015JD024651).芬兰自然资源研究所（Natural Resources Institute Finland）收集的驯鹿牧场实地调查数据集，包含芬兰最北部20家驯鹿放牧合作社的617个永久性样地，研究团队分别于2006-2008年和2016-2018年夏季对这些样地开展了两次牧场调查。这些永久性样地均设置于半驯化驯鹿的营养贫瘠型干燥或半干燥地衣（Cladina spp.）类冬季牧场，分布区域涵盖仅冬季、仅夏季或全年被驯鹿放牧的范围。根据所在区域的不同，这类地面地衣牧场可分布于松林、山桦林或开阔的山地石楠荒原中。两次调查中，每个样地均沿同一直线设置采样单元：包含10个面积为0.25 m²的地面植物样方，以及10个半径3.99 m的植被与树木样圆。在每个植物样方中，需评估不同地衣、矮灌木的盖度与高度，以及苔藓的盖度。针对每个样地的植被与森林类型以及树木冠层盖度，可通过整样地范围估算，或分别在每个样圆内单独开展评估。本数据集所用的气候变量源自芬兰气象研究所（Finnish Meteorological Institutes）的网格化逐日气候数据集（https://doi.org/10.1002/2015JD024651）。