It is proposed to measure the DBH of the trees in the sample plot by 5cm, which is called the sample tree. It is not necessary to observe the small trees whose DBH is less than 5cm, and it is necessary to record the number of small trees.
Tree species identification: identify tree species based on the dendrology knowledge of investigators and the afforestation data of the forest farm.
DBH measurement: use the DBH ruler to observe the DBH of the sample wood at a height of 1.3m. If the single tree to be measured is located on the hillside, the investigators should stand at the uphill position for measurement.
Tree height measurement: use a laser altimeter to measure the vertical distance between the sample tree root and the top of the sample plot.
Measurement of under branch height: measure the under branch height of a single tree with a laser altimeter.
Biomass calculation: the biomass of the sample plot is the sum of the single tree biomass of each sample plot, in kg. For the biomass calculation formula, please refer to the industry standard documents and relevant papers under the industry standard folder of biomass calculation.
Average height: the average tree height of the sample plot is the average height of all single trees.
File name: "Bxx quadrat. xlsx", where xx represents quadrat number. For example, B01 quadrat. xlsx represents the biomass survey data of B01 quadrat.
Qian, F. (2022). Forest sample plot survey data of Jinfoshan National Station (2020). Upper Yangtze River Scientific Data Center, (Download the reference：
Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.
To respect the intellectual property rights, protect the rights of data authors, expand services of the data center, and evaluate the application potential of data, data users should clearly indicate the source of the data and the author of the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results). For re-posting (second or multiple releases) data, the author must also indicate the source of the original data.
License：
This work is licensed under an
Attribution 4.0 International (CC BY 4.0)
1.Vegetation coverage data of Jingfo National Station in 2020
2.The Spatial Distribution of Population Counts 2000-2020, China.
3.500m Photosynthetic Active Radiation data based on MODIS MCD18C2 in Southwest China (2002-2021)
4.Automatic Measurement Data of Chlorophyll Fluorescence at Jinfoshan National Station (2020)
5.Chlorophyll observation data of Jinfo National Station (2020)
7.Land Use Map of Chengdu Main City in 2020
8.Forest sample plot survey data of Jinfoshan National Station (2020)
9.Data set of 5km photosynthetic effective radiation products based on BESS simulation (2002-2021)
10.Soil Moisture Observation Data of Jinfoshan National Station (2020)
No record
No record
Current page automatically show English comments Show comments in all languages
| East: 106.45 | West: 106.32 |
|---|---|
| South: 29.76 | North: 29.79 |
