Citation:

PANGAEA.943547

Name: Tree data set from forest inventories in north-eastern Siberia - Tree measurements
Published: 2022-10-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Chukotka; Field observation; Forest; Individual Trees; Siberia; Taymyr; Yakutia

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Abstract:

The data set presents more than 12,000 of about 40,000 trees, which were surveyed during several Russian-German expeditions by the North-Eastern Federal University Yakutsk and the Alfred-Wegener-Institute Potsdam in the North-East of the Russian Federation between the years 2011 and 2021. The purpose was to gather information on trees and forests in this region, which was then used to understand tree line migration, stand infilling and natural disturbance and succession processes and to initialize and validate a forest model. Trees are located on more than 160 vegetation plots, each of which has a size of several hundred square meters. For every tree, height was estimated, and the species recorded. Some individuals were subject to more detailed inventory, including diameters at base and at breast height, crown diameters, and other information. This table partially overlaps with the data set: “Tree data set from forest inventories in north-eastern Siberia - Tree heights.” (doi: 10.1594/PANGAEA.949863), but includes all tree measurements as well as all inventoried trees, which were not included in the Tree heights dataset due to small or lying deadwood.

Keyword(s):

Chukotka; Field observation; Forest; Individual Trees; Siberia; Taymyr; Yakutia

Project(s):

Polar Terrestrial Environmental Systems @ AWI (AWI_Envi)

Coverage:

Median Latitude: 69.948048 * Median Longitude: 123.037662 * South-bound Latitude: 59.970583 * West-bound Longitude: 97.705734 * North-bound Latitude: 72.549159 * East-bound Longitude: 168.426362

Date/Time Start: 2011-08-04T00:00:00 * Date/Time End: 2021-08-30T00:00:00

Minimum Elevation: 33.0 m * Maximum Elevation: 754.0 m

Event(s):

11-CH-06-IV * Latitude: 70.662000 * Longitude: 97.707000 * Date/Time: 2011-08-06T00:00:00 * Campaign: (Chatanga2011) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR)

11-CH-06-V * Latitude: 70.668433 * Longitude: 97.711333 * Date/Time: 2011-08-06T00:00:00 * Campaign: (Chatanga2011) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR)

11-CH-06I * Latitude: 70.669150 * Longitude: 97.712100 * Date/Time: 2011-03-08T00:00:00 * Elevation: 108.0 m * Campaign: (Chatanga2011) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR)

Comment:

Variables: The variable Position of tree describes the recording protocol. It has the values PLOT for trees that were surveyed in detail on a square plot, CIRCLEPLOT for trees that were surveyed in detail on a circular plot, PLOTHEIGHT for trees that were surveyed with less detail on a circular plot, and EXTRA for trees that are next to a plot. The variable Species group was derived from the variable Species for further analysis. The variable Growth type has the values T = Tree, K = Krumholz, S = Shrub, M = Multistem, TL = Tree lying. The variable Vitality estimate has the values ++ = very high vitality, + = high vitality, 0 = mediocre vitality, - = low vitality, – = very low vitality. Predicted diameters were derived with allometric formulas from height if they were not explicitly measured. Basal areas and Volume were calculated using the height and diameters or predicted diameters.

Exact coordinates (latitude and longitude) were not always recorded for every tree. In that case, refer to the coordinate of the plot.

Variables were rounded after calculations.

Version 2, 2022-10-24: This version replaces doi: 10.1594/PANGAEA.943522, which contained erroneous species naming.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Miesner, Timon
2	Campaign	Campaign		Miesner, Timon
3	DATE/TIME	Date/Time		Miesner, Timon		Geocode
4	LATITUDE	Latitude		Miesner, Timon		Geocode
5	LONGITUDE	Longitude		Miesner, Timon		Geocode
6	Latitude, center	Lat C		Miesner, Timon		Plot latitude
7	Longitude, center	Long C		Miesner, Timon		Plot longitude
8	Principal investigator	PI		Miesner, Timon
9	Tree, survey protocol	Tree, survey protocol		Miesner, Timon
10	Tree ID	Tree ID		Miesner, Timon
11	Subsample ID	Subsample ID		Miesner, Timon
12	Species	Species		Miesner, Timon
13	Genus	Genus		Miesner, Timon		Species grou
14	Growth form	Growth form		Miesner, Timon		T = Tree, K = Krumholz, S = Shrub, M = Multistem, TL = lying
15	Tree height	Tree height	m	Miesner, Timon
16	Tree crown diameter	Crown diam	m	Miesner, Timon	Maximum
17	Tree crown diameter	Crown diam	m	Miesner, Timon		Smaller, diameter measured perpendicular to the maximum crown diameter
18	Vitality	Vitality		Miesner, Timon		++ = very high vitality, + = high vitality, 0 = mediocre vitality, - = low vitality, -- = very low vitality
19	Comment	Comment		Miesner, Timon		Vitality estimate comment
20	Tree, diameter, at base	Tree D base	cm	Miesner, Timon
21	Trees, diameter at breast height	DBH	cm	Miesner, Timon
22	Tree, crown base	Tree crown base	m	Miesner, Timon
23	Tree, diameter, at base	Tree D base	cm	Miesner, Timon		Predicted
24	Trees, diameter at breast height	DBH	cm	Miesner, Timon		Predicted
25	Tree, basal area, at base	Tree BA base	m²	Miesner, Timon
26	Tree, basal area, at breast height	Tree BA breast	m²	Miesner, Timon
27	Tree, volume, conical	Tree vol conical	m³	Miesner, Timon
28	Tree, volume, smallian	Tree vol smallian	m³	Miesner, Timon

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

183236 data points

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