NFI: Topics by tree condition

The National Forest Inventory (NFI) is a periodic survey of condition and development of the Swiss forest. It is produced in close cooperation between the Federal Office for the Environment (FOEN) and the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). This record contains information about: total wood volume (stemwood), total wood volume (stemwood) per forest area, total number of stems and total number of stems per forest area国家森林清查（National Forest Inventory, NFI）是针对瑞士森林状况与发展开展的周期性调查工作，由瑞士联邦环境办公室（Federal Office for the Environment, FOEN）与瑞士联邦森林、雪与景观研究所（Swiss Federal Institute for Forest, Snow and Landscape Research, WSL）密切协作完成。本数据集收录以下信息：林木总蓄积量（干材）、单位林地区域的林木总蓄积量（干材）、总株数以及单位林地区域的总株数。