NFI: Topics by tree state (living/dead)

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）是针对瑞士森林现状与发展动态开展的定期调查工作，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）紧密合作编制完成。本数据集包含以下信息：总木材蓄积量（干材）、单位森林面积总木材蓄积量（干材）、总林木株数以及单位森林面积总林木株数。