Dynamics of surface fuel accumulation in Scots pine (Pinus sylvestris L.) forests of green zones of the cities of Kyiv and Kharkiv

Age, years	DBH, cm	Heigh, m	Relative density	Stock, m³ × ha^-1	Load (litter + duff), t	Depth (litter + duff), cm
15	6.2	7.9	0.89	54	9.0	2.38
15	5.9	7.4	0.88	43	8.1	2.10
23	12.6	10.4	0.92	99	22.1	2.70
43	15.1	16.3	0.74	173	31.4	5.20
50	23.4	20.9	0.67	274	13.4	2.80
60	25.7	24.1	0.72	314	25.3	5.70
70	27.6	23.4	0.80	273	29.8	6.10
75	32.3	25.4	0.74	370	46.3	8.10
80	31.5	26.0	0.83	299	40.2	6.20
85	32.4	26.7	0.79	306	25.4	5.30
90	34.2	27.1	0.65	313	49.8	8.60
LSD_0.05	1.24	1.28	1.23	1.34	1.38	1.42

1 LSD - The smallest significant difference.

Table 2.

Characteristics of forest fuel loads in the peri-urban green zones of Kharkiv dominated by Scots pine (Pinus sylvestris L.) (mean values for 2021–2023)

Age, years	DBH, cm	Heigh, m	Relative density	Stock, m³ × ha^-1	Load (litter + duff), t	Depth (litter + duff), cm
10	10	4.3	0.85	12	15.61	1.4
17	8	7.6	1.00	26	15.54	1.6
24	14	10.0	0.75	115	21.09	2.1
35	16	13.2	0.8	144	31.73	1.4
55	28	16.0	0.75	217	39.87	3.6
63	24	17.8	0.79	270	42.87	4.3
72	28	24.2	0.80	433	60.83	5.4
82	29	22.6	0.75	389	51.96	4.8
124	46	26.0	0.40	243	33.1	6.4
LSD_0.05	1.34	1.26	1.32	1.43	1.25	1.16

1 LSD - The smallest significant difference.

Table 3.

Comparison of modelled surface fuel load in the peri-urban recreational forests of Kyiv and Kharkiv (mean values for 2021–2023)

Age, years	D, cm	H, m	P	M, m³ × ha^-1	R_v modelled		Litter + duff load, ton
Age, years	D, cm	H, m	P	M, m³ × ha^-1	Kyiv	Kharkiv	Kyiv	Kharkiv
15	6.2	7.9	0.89	54	0.188	0.264	10.1	14.299
15	5.9	7.4	0.88	43	0.185	0.229	7.975	9.8854
23	12.6	10.4	0.92	99	0.18	0.529	17.882	52.348
43	15.1	16.3	0.74	173	0.122	0.09	21.12	15.526
50	23.4	20.9	0.67	274	0.102	0.093	28.036	25.499
60	25.7	24.1	0.72	314	0.109	0.115	34.539	36.015
70	27.6	23.4	0.8	273	0.125	0.167	33.971	45.688
75	32.3	25.4	0.74	370	0.109	0.135	40.668	49.898
80	31.5	26	0.83	299	0.127	0.202	38.268	60.357
85	32.4	26.7	0.79	306	0.119	0.151	36.234	46.224
90	34.2	27.1	0.65	313	0.089	0.058	27.987	18.425
LSD_0.05	1.24	1.26	1.32	1.47	1.36	1.4	1.21	1.152

1 LSD - The smallest significant difference;

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DOI: https://doi.org/10.2478/ffp-2026-0001 | Journal eISSN: 2199-5907 | Journal ISSN: 0071-6677

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Language: English

Page range: 1 - 8

Submitted on: Jun 14, 2025

Accepted on: Aug 11, 2025

Published on: Mar 17, 2026

Published by: Forest Research Institute

In partnership with: Paradigm Publishing Services

Keywords:

forest fuel,

green zone forests,

conversion coefficients,

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© 2026 Roman V. Hurzhii, Serhii H. Sydorenko, Valery B. Levchenko, Andrii H. Lashchenko, Svitlana V. Sydorenko, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 68 (2026): Issue 1 (March 2026)

Dynamics of surface fuel accumulation in Scots pine (Pinus sylvestris L.) forests of green zones of the cities of Kyiv and Kharkiv

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Figure 1.

Table 1.

Table 2.

Table 3.

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