Changes during twelve years in three mature hemiboreal stands growing in a radiation model intercomparison test site, Järvselja, Estonia

Corner	X_local	y_local	X_EPSG:3301	y_EPSG:3301
Pine1	0	0	693110.5	6468117.1
Pine2	0	100	693121.6	6468216.7
Pine3	100	100	693220.8	6468205.6
Pine4	100	0	693210.1	6468105.9
Spruce1	0	0	690832.1	6466197.9
Spruce2	0	100	690814.5	6466296.3
Spruce3	100	100	690913.1	6466313.8
Spruce4	100	0	690930.6	6466215.4
Birch1	0	0	695299.9	6464769.0
Birch2	0	100	695280.7	6464867.2
Birch3	100	100	695378.8	6464886.6
Birch4	100	0	695397.7	6464788.0

Map of live trees in RAMI birch stand in 2019. The symbols are scaled according to tree size. Cyan corresponds to birch, magenta to spruce, blue-violet to black alder, green to European aspen and grey to other species.
*Joonis 1. RAMI kaasiku kasvavate puude kaart aastal 2019. Sümbolid on skaleeritud kujutamaks puude suurust, värvid vastavad metsakorralduse juhendile*.

Table 2.

Birch stand summary of forest inventory 2007 and 2019. Notations are explained under table.

Tabel 2. Kaasiku 2007. ja 2019. aasta takseerandmete kokkuvõte.

Species	Code	N	G	D	H	L_cr	R_cr
2007 inventory, upper layer
Populus tremula L.	HB	78	2.848	21.6	27.5	9.4	1.95
Betula pendula Roth	KS	399	13.44	20.7	26.9	9.4	1.63
Alnus glutinosa (L.) Gaertn.	LM	176	6.921	22.4	23.8	9.8	2.04
Salix spp.	PJ	1	0.044	23.7	24.0	9.9	1.96
2007 inventory, second layer
Ulmus glabra Huds.	JA	1	0.010	11.3	15.9	8.1	0.99
Betula pendula	KS	66	0.567	10.5	18.2	5.8	0.99
Alnus glutinosa	LM	20	0.271	13.1	17.9	8.5	1.40
Tilia cordata	PN	205	2.622	12.8	16.5	9.0	1.93
Fraxinus excelsior	SA	30	0.281	10.9	17.6	9.2	1.64
Acer platanoides	VA	16	0.159	11.2	16.3	8.5	1.85
2007 inventory, regeneration layer
Picea abies (L.) H. Karst.	KU	39	0.245	8.9	10.3	4.8	1.16
2019 inventory, upper layer
Populus tremula	HB	64	4.129	28.7	31.8	10.7	2.30
Betula pendula	KS	342	15.44	24.0	29.4	11.5	1.97
Alnus glutinosa	LM	159	8.654	26.3	26.4	13.1	2.27
2019 inventory, second layer
Ulmus glabra	JA	1	0.015	13.8	17.3	11.0	2.03
Betula pendula	KS	27	0.275	11.4	19.7	8.0	1.20
Alnus glutinosa	LM	18	0.318	15.0	20.6	10.7	1.65
Tilia cordata	PN	264	4.369	14.5	20.2	13.0	2.13
Fraxinus excelsior	SA	18	0.263	13.6	20.4	12.3	2.12
Acer platanoides	VA	20	0.289	13.6	18.7	12.5	2.16
2019 inventory, regeneration layer
Picea abies	KU	53	0.511	11.1	13.4	11.6	1.54
	2019	inventory, dead trees
Dead 2007–2019	-	159	1.349	10.4	-	-	-

1 N – number of trees; H – mean tree height, m; D – mean tree diameter at breast height, cm;

2 L_cr – mean length of live crown, m; R_cr – mean maximum radius of crown, m.

Changes in stem breast height diameter distribution in the birch stand. Label (d) is for the trees that died between two measurements made in 2007 and 2019.
*Joonis 2. Kaasiku puude diameetrijaotuse muutus. Ajavahemikus 2007–2019 surnud puud (d) on eraldi välja toodud*.

Map of alive trees in RAMI spruce stand in 2019. The symbols are scaled according to tree size. Magenta corresponds to spruce and cyan corresponds to birch.
*Joonis 3. RAMI kuusiku kasvavate puude kaart aastal 2019. Sümbolid on skaleeritud kujutamaks puude suurust, värvid vastavad metsakorralduse juhendile*.

Table 3.

Spruce stand summary of forest inventory 2007 and 2019.

Tabel 3. Kuusiku 2007. ja 2019. aasta takseerandmete kokkuvõte.

Species	Code	N	G	D	H	L_cr	R_cr
2007 inventory, upper layer
Populus tremula	HB	2	0.052	18.2	25.2	7.1	1.51
Betula pendula	KS	143	3.607	17.9	24.7	8.7	1.52
Picea abies	KU	624	27.04	23.5	23.8	12.0	1.81
Alnus glutinosa	LM	3	0.097	20.3	22.6	9.6	2.05
Pinus sylvestris L.	MA	2	0.109	26.3	24.5	10.4	2.11
2007 inventory, second layer
Betula pendula	KS	152	1.024	9.3	18.1	4.9	0.92
Picea abies	KU	517	5.015	11.1	14.7	6.2	1.17
2007 inventory, regeneration layer
Picea abies	KU	89	0.188	5.2	5.7	2.8	1.09
Picea abies	KU	157	0.586	6.9	9.1	3.5	1.10
2019 inventory, upper layer
Populus tremula	HB	2	0.064	20.2	27.3	6.6	1.39
Betula pendula	KS	132	4.489	20.8	28.0	10.2	1.67
Picea abies	KU	585	30.61	25.8	26.7	12.1	1.57
Alnus glutinosa	LM	3	0.111	21.7	24.4	12.3	2.12
Pinus sylvestris	MA	2	0.139	29.7	27.2	13.4	2.70
2019 inventory, second layer
Betula pendula	KS	45	0.494	11.8	23.1	5.2	0.93
Picea abies	KU	375	4.198	11.9	16.4	7.1	1.04
2019 inventory, regeneration layer
Picea abies	KU	87	0.248	6.0	7.2	3.2	0.92
Picea abies	KU	70	0.326	7.7	11.7	4.8	0.92
Dead 2007–2019	-	394	1.861	7.8	-	-	-

Changes in stem breast height diameter distribution in the spruce stand. Label (d) is for trees that died between two measurements made in 2007 and 2019.
*Joonis 4. Kuusiku puude diameetrijaotuse muutus. Ajavahemikus 2007–2019 surnud puud (d) on eraldi välja toodud*.

Table 4.

Summary of forest inventory 2007 and 2019 of the pine stand.

Tabel 4. Männiku 2007. ja 2019. aasta takseerandmete kokkuvõte.

Species	Code	N	G	D	H	L_cr	R_cr
2007 inventory, upper layer
Pinus sylvestris	MA	1116	28.25	18	16.1	4.5	1.52
2007 inventory, regeneration layer
Betula pendula	KS	6	0.014	5.5	4.1	2.9	0.78
Picea abies*	KU	1	0.002	5.0	5.0	1.8	1.09
2019 inventory, upper layer
Pinus sylvestris	MA	971	29.09	19.5	17.4	4.6	1.53
2019 inventory, regeneration layer
Betula pendula	KS	6	0.022	6.8	5.0	3.1	0.90
Picea abies*	KU	1	0.003	6.2	6.9	3.8	0.97
Dead 2007–2019	-	145	1.831	12.7	-	-	-

* models from the spruce stand were used.

Map of alive trees in RAMI pine stand in 2019. The symbols are scaled according to tree size. Brown corresponds to pine, cyan to birch, magenta to spruce.
*Joonis 5. RAMI männiku kasvavate puude kaart aastal 2019. Sümbolid on skaleeritud kujutamaks puude suurust, värvid vastavad metsakorralduse juhendile*.

Changes in stem breast height diameter distribution in the pine stand. Label (d) is for trees that died between two measurements made in 2007 and 2019.
*Joonis 6. Männiku puude diameetrijaotuse muutus. Ajavahemikus 2007–2019 surnud puud (d) on eraldi välja toodud*.

RAMI birch stand at Järvselja, Estonia 15 August 2018

RAMI spruce stand at Järvselja, Estonia 01 August 2019

RAMI pine stand at Järvselja, Estonia 01 August 2019

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DOI: https://doi.org/10.2478/fsmu-2021-0007 | Journal eISSN: 1736-8723 | Journal ISSN: 1406-9954

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Language: English

Page range: 112 - 122

Submitted on: Jun 14, 2021

Accepted on: Aug 30, 2021

Published on: Dec 1, 2021

Published by: Estonian University of Life Sciences

In partnership with: Paradigm Publishing Services

Keywords:

validation data,

remote sensing,

single tree measurements,

RAMI

Related subjects:

Life sciences,

Plant science

© 2021 Mait Lang, Andres Kuusk, Mihkel Kaha, Jan Pisek, Jan-Peter George, Andres Kiviste, Diana Laarmann, Kristina Türk, Tauri Arumäe, published by Estonian University of Life Sciences
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 74 (2021): Issue 1 (December 2021)

Changes during twelve years in three mature hemiboreal stands growing in a radiation model intercomparison test site, Järvselja, Estonia

Figures & Tables

Table 1.

Figure 1.

Table 2.

Figure 2.

Figure 3.

Table 3.

Figure 4.

Table 4.

Figure 5.

Figure 6.

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