地位级指数表编制的数据来源包括固定标准地数据、临时标准地数据以及优势木

Source-level position index table prepared by the standard to include fixed data, temporary sample data and the dominant tree data, the best source of data for the fixed standard to many years of continuous observation data, but external fixation industry standard data collection to a huge workload, time-consuming, the actual work is difficult to obtain accurate data [34]

The data sources compiled by the status-level index table include fixed standard data, temporary standard-level data and advantage wood data, the best sources of data are fixed standard multi-year continuous observation data, but fixed standard data field collection is a large, time-consuming and laborious, it is difficult to obtain accurate data in practice.

The data sources of site index table include fixed standard land data, temporary standard land data and dominant wood data. The best data source is multi-year continuous observation data of fixed standard land. However, the field work of fixed standard land data collection is huge, time-consuming and laborious, and it is difficult to obtain accurate data in actual work [34]<br>