Comparison of Growth Process of 45-year-old Aigeiros Varieties Introduced in Jianghan Plain

doi:10.11924/j.issn.1000-6850.casb2023-0908

Abstract

Abstract:

This study examined three 45-year-old Aigeiros varieties, ‘I-63’, ‘I-69’, and ‘I-72’, introduced in the Jianghan plain. Tree trunk analysis was performed by sampling discs at varying heights to compare the growth processes of different varieties in terms of diameter at breast height, tree height, and wood volume. The data and technical support provided by this study could contribute to the cultivation of large-diameter Aigeiros varieties timber in the Jianghan plain. The results indicated that the bark-stripped diameters of ‘I-63’, ‘I-69’, and ‘I-72’ reached 58.35, 61.70 and 53.60 cm, respectively, after 45 years of growth. The tree heights were 24.84, 22.14 and 27.79 m, respectively, and the bark-stripped wood volumes were 3.92, 3.93 and 3.11 m³, respectively. The maximum annual growth in diameter for ‘I-63’, ‘I-69’, and ‘I-72’ occurred in the 5th, 6th, and 5th years, respectively, with a significant slowdown in diameter growth after the age of 17. The diameter growth slowed down significantly. The maximum annual growth in tree height for ‘I-63’, ‘I-69’ and ‘I-72’ occurred in the 8th, 4th, and 6th years, respectively, with tree height growth approaching its peak after the age of 20. The maximum annual growth in wood volume for ‘I-63’, ‘I-69’, and ‘I-72’ occurred in the 18th, 15th, and 16th years, respectively, corresponding to the maturity age of wood volume for these three varieties. The statistical data revealed that the fast-growing period of wood volume for ‘I-63’, ‘I-69’ and ‘I-72’ was from 8 years to 18 years, 6 years to 15 years, and 7 years to 16 years, respectively. Overall, all three varietied had long lifespans and growth period, demonstrating excellent adaptability in the Jianghan plain. However, ‘I-69’ had a superior stem type and superior growth performance, making it more valuable for promotion.

Key words: Jianghan Plain, Aigeiros varieties, tree trunk analysis, growth curve, growth process, cultivation of large-diameter timber

HUANG Guowei, PENG Hualan, ZHANG Yadong, MA Linjiang, ZHANG Xinghu, ZHANG Xinye. Comparison of Growth Process of 45-year-old Aigeiros Varieties Introduced in Jianghan Plain[J]. Chinese Agricultural Science Bulletin, 2024, 40(31): 1-6.

Figures/Tables 5

References 26

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龄阶	总生长量/cm			平均生长量/cm			连年生长量/cm			龄阶	总生长量/cm			平均生长量/cm			连年生长量/cm
龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72	龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72
1	3.15	3.55	3.41	3.15	3.55	3.41	/	/	/	24	45.52	47.35	37.40	1.90	1.97	1.56	0.77	0.65	0.50
2	6.49	6.25	4.90	3.25	3.13	2.45	3.34	2.70	1.49	25	46.23	48.00	37.80	1.85	1.92	1.51	0.71	0.65	0.40
3	10.21	8.70	7.35	3.40	2.90	2.45	3.72	2.45	2.45	26	46.51	48.50	38.10	1.79	1.87	1.47	0.28	0.50	0.30
4	15.21	11.10	9.35	3.80	2.78	2.34	5.00	2.40	2.00	27	46.99	48.95	38.55	1.74	1.81	1.43	0.48	0.45	0.45
5	20.37	15.80	13.20	4.07	3.16	2.64	5.16	4.70	3.85	28	47.46	49.35	39.00	1.70	1.76	1.39	0.47	0.40	0.45
6	23.33	21.05	16.20	3.89	3.51	2.70	2.96	5.25	3.00	29	47.88	49.65	39.70	1.65	1.71	1.37	0.42	0.30	0.70
7	26.65	24.90	18.75	3.81	3.56	2.68	3.32	3.85	2.55	30	48.53	50.10	40.55	1.62	1.67	1.35	0.65	0.45	0.85
8	29.16	28.80	21.40	3.65	3.60	2.68	2.51	3.90	2.65	31	49.10	50.30	41.55	1.58	1.62	1.34	0.57	0.20	1.00
9	31.26	31.95	23.95	3.00	3.55	2.66	2.10	3.15	2.55	32	50.00	50.75	42.40	1.56	1.59	1.33	0.90	0.45	0.85
10	33.12	34.55	26.25	3.31	3.46	2.63	1.86	2.60	2.30	33	50.84	51.20	43.00	1.54	1.55	1.30	0.84	0.45	0.60
11	34.78	37.15	28.20	3.16	3.38	2.56	1.66	2.60	1.95	34	51.51	51.85	43.75	1.52	1.53	1.29	0.67	0.65	0.75
12	36.52	38.20	29.15	3.04	3.18	2.43	1.74	1.05	0.95	35	52.16	52.45	44.45	1.49	1.50	1.27	0.65	0.60	0.70
13	38.41	39.10	30.70	2.95	3.01	2.36	1.89	0.90	1.55	36	52.83	53.20	45.00	1.47	1.48	1.25	0.67	0.75	0.55
14	38.84	40.20	31.85	2.77	2.87	2.28	0.43	1.10	1.15	37	53.26	53.80	45.50	1.44	1.45	1.23	0.43	0.60	0.50
15	40.03	41.25	32.95	2.67	2.75	2.20	1.19	1.05	1.10	38	53.83	54.45	46.30	1.42	1.43	1.22	0.57	0.65	0.80
16	40.70	42.35	33.90	2.54	2.65	2.12	0.67	1.10	0.95	39	54.49	55.30	47.20	1.40	1.42	1.21	0.66	0.85	0.90
17	41.59	43.50	34.25	2.45	2.56	2.01	0.89	1.15	0.35	40	55.00	56.15	48.00	1.38	1.40	1.20	0.51	0.85	0.80
18	42.26	43.90	34.80	2.35	2.44	1.93	0.67	0.40	0.55	41	55.55	57.30	49.05	1.35	1.40	1.20	0.55	1.15	1.05
19	42.64	44.45	35.05	2.24	2.34	1.84	0.38	0.55	0.25	42	55.88	58.25	50.55	1.33	1.39	1.20	0.33	0.95	1.50
20	43.26	44.95	35.40	2.16	2.25	1.77	0.62	0.50	0.35	43	56.90	59.80	51.65	1.32	1.39	1.20	1.02	1.55	1.10
21	43.81	45.50	35.95	2.09	2.17	1.71	0.55	0.55	0.55	44	57.42	60.75	52.50	1.31	1.38	1.19	0.52	0.95	0.85
22	44.24	46.00	36.25	2.01	2.09	1.65	0.43	0.50	0.30	45	58.35	61.70	53.60	1.30	1.37	1.19	0.93	0.95	1.10
23	44.75	46.70	36.90	1.95	2.03	1.60	0.51	0.70	0.65

龄阶	总生长量/cm			平均生长量/cm			连年生长量/cm			龄阶	总生长量/cm			平均生长量/cm			连年生长量/cm
龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72	龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72
1	3.15	3.55	3.41	3.15	3.55	3.41	/	/	/	24	45.52	47.35	37.40	1.90	1.97	1.56	0.77	0.65	0.50
2	6.49	6.25	4.90	3.25	3.13	2.45	3.34	2.70	1.49	25	46.23	48.00	37.80	1.85	1.92	1.51	0.71	0.65	0.40
3	10.21	8.70	7.35	3.40	2.90	2.45	3.72	2.45	2.45	26	46.51	48.50	38.10	1.79	1.87	1.47	0.28	0.50	0.30
4	15.21	11.10	9.35	3.80	2.78	2.34	5.00	2.40	2.00	27	46.99	48.95	38.55	1.74	1.81	1.43	0.48	0.45	0.45
5	20.37	15.80	13.20	4.07	3.16	2.64	5.16	4.70	3.85	28	47.46	49.35	39.00	1.70	1.76	1.39	0.47	0.40	0.45
6	23.33	21.05	16.20	3.89	3.51	2.70	2.96	5.25	3.00	29	47.88	49.65	39.70	1.65	1.71	1.37	0.42	0.30	0.70
7	26.65	24.90	18.75	3.81	3.56	2.68	3.32	3.85	2.55	30	48.53	50.10	40.55	1.62	1.67	1.35	0.65	0.45	0.85
8	29.16	28.80	21.40	3.65	3.60	2.68	2.51	3.90	2.65	31	49.10	50.30	41.55	1.58	1.62	1.34	0.57	0.20	1.00
9	31.26	31.95	23.95	3.00	3.55	2.66	2.10	3.15	2.55	32	50.00	50.75	42.40	1.56	1.59	1.33	0.90	0.45	0.85
10	33.12	34.55	26.25	3.31	3.46	2.63	1.86	2.60	2.30	33	50.84	51.20	43.00	1.54	1.55	1.30	0.84	0.45	0.60
11	34.78	37.15	28.20	3.16	3.38	2.56	1.66	2.60	1.95	34	51.51	51.85	43.75	1.52	1.53	1.29	0.67	0.65	0.75
12	36.52	38.20	29.15	3.04	3.18	2.43	1.74	1.05	0.95	35	52.16	52.45	44.45	1.49	1.50	1.27	0.65	0.60	0.70
13	38.41	39.10	30.70	2.95	3.01	2.36	1.89	0.90	1.55	36	52.83	53.20	45.00	1.47	1.48	1.25	0.67	0.75	0.55
14	38.84	40.20	31.85	2.77	2.87	2.28	0.43	1.10	1.15	37	53.26	53.80	45.50	1.44	1.45	1.23	0.43	0.60	0.50
15	40.03	41.25	32.95	2.67	2.75	2.20	1.19	1.05	1.10	38	53.83	54.45	46.30	1.42	1.43	1.22	0.57	0.65	0.80
16	40.70	42.35	33.90	2.54	2.65	2.12	0.67	1.10	0.95	39	54.49	55.30	47.20	1.40	1.42	1.21	0.66	0.85	0.90
17	41.59	43.50	34.25	2.45	2.56	2.01	0.89	1.15	0.35	40	55.00	56.15	48.00	1.38	1.40	1.20	0.51	0.85	0.80
18	42.26	43.90	34.80	2.35	2.44	1.93	0.67	0.40	0.55	41	55.55	57.30	49.05	1.35	1.40	1.20	0.55	1.15	1.05
19	42.64	44.45	35.05	2.24	2.34	1.84	0.38	0.55	0.25	42	55.88	58.25	50.55	1.33	1.39	1.20	0.33	0.95	1.50
20	43.26	44.95	35.40	2.16	2.25	1.77	0.62	0.50	0.35	43	56.90	59.80	51.65	1.32	1.39	1.20	1.02	1.55	1.10
21	43.81	45.50	35.95	2.09	2.17	1.71	0.55	0.55	0.55	44	57.42	60.75	52.50	1.31	1.38	1.19	0.52	0.95	0.85
22	44.24	46.00	36.25	2.01	2.09	1.65	0.43	0.50	0.30	45	58.35	61.70	53.60	1.30	1.37	1.19	0.93	0.95	1.10
23	44.75	46.70	36.90	1.95	2.03	1.60	0.51	0.70	0.65

龄阶	总生长量/m			平均生长量/m			连年生长量/m			龄阶	总生长量/m			平均生长量/m			连年生长量/m
龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72	龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72
1	3.6771	4.1200	4.2100	3.6771	4.1200	4.2100	/	/	/	24	24.0670	20.8930	26.7438	1.0028	0.8705	1.1143	0.0385	0.0608	0.0625
2	4.7170	6.1884	6.9793	2.3585	3.0942	3.4896	1.0398	2.0684	2.7693	25	24.1110	20.9740	26.7750	0.9644	0.8390	1.0710	0.0440	0.0810	0.0313
3	5.8344	9.8997	9.8189	1.9448	3.2999	3.2730	1.1174	3.7113	2.8396	26	24.1550	21.0888	26.8188	0.9290	0.8111	1.0315	0.0440	0.1148	0.0438
4	8.3917	14.3045	12.7708	2.0979	3.5761	3.1927	2.5573	4.4048	2.9520	27	24.1991	21.1900	26.8750	0.8963	0.7848	0.9954	0.0440	0.1013	0.0563
5	10.2282	16.2327	15.8230	2.0456	3.2465	3.1646	1.8364	1.9282	3.0522	28	24.2321	21.2508	26.9250	0.8654	0.7590	0.9616	0.0330	0.0608	0.0500
6	11.4884	17.1643	19.7865	1.9147	2.8607	3.2978	1.2602	0.9316	3.9636	29	24.2761	21.3723	26.9688	0.8371	0.7370	0.9300	0.0440	0.1215	0.0438
7	14.1054	18.1247	21.5298	2.0151	2.5892	3.0757	2.6170	0.9604	1.7433	30	24.3037	21.4668	27.0250	0.8101	0.7156	0.9008	0.0275	0.0945	0.0563
8	17.4589	19.3002	23.4008	2.1824	2.4125	2.9251	3.3535	1.1755	1.8710	31	24.3312	21.5208	27.1000	0.7849	0.6942	0.8742	0.0275	0.0540	0.0750
9	19.7097	19.3012	24.3863	2.1900	2.1446	2.7096	2.2508	0.0010	0.9855	32	24.3642	21.5748	27.1438	0.7614	0.6742	0.8482	0.0330	0.0540	0.0438
10	20.7474	19.3059	25.3934	2.0747	1.9306	2.5393	1.0377	0.0047	1.0072	33	24.4028	21.6153	27.1875	0.7395	0.6550	0.8239	0.0385	0.0405	0.0438
11	21.9097	19.3187	25.6142	1.9918	1.7562	2.3286	1.1623	0.0129	0.2208	34	24.4413	21.6693	27.2125	0.7189	0.6373	0.8004	0.0385	0.0540	0.0250
12	22.5350	19.3451	25.8625	1.8779	1.6121	2.1552	0.6252	0.0264	0.2483	35	24.4853	21.7030	27.2438	0.6996	0.6201	0.7784	0.0440	0.0338	0.0313
13	22.8119	19.3888	25.9938	1.7548	1.4914	1.9995	0.2769	0.0436	0.1313	36	24.5404	21.7570	27.2813	0.6817	0.6044	0.7578	0.0550	0.0540	0.0375
14	22.9716	19.4552	26.1250	1.6408	1.3897	1.8661	0.1596	0.0664	0.1313	37	24.5789	21.8245	27.3438	0.6643	0.5899	0.7390	0.0385	0.0675	0.0625
15	23.1972	19.5474	26.2250	1.5465	1.3032	1.7483	0.2257	0.0923	0.1000	38	24.6119	21.8448	27.4188	0.6477	0.5749	0.7215	0.0330	0.0203	0.0750
16	23.3459	19.6605	26.3125	1.4591	1.2288	1.6445	0.1486	0.1130	0.0875	39	24.6395	21.8988	27.4813	0.6318	0.5615	0.7046	0.0275	0.0540	0.0625
17	23.5110	19.7975	26.4000	1.3830	1.1646	1.5529	0.1651	0.1370	0.0875	40	24.6670	21.9393	27.5250	0.6167	0.5485	0.6881	0.0275	0.0405	0.0438
18	23.6431	19.9559	26.4563	1.3135	1.1087	1.4698	0.1321	0.1584	0.0563	41	24.6945	21.9865	27.5813	0.6023	0.5363	0.6727	0.0275	0.0473	0.0563
19	23.7532	20.1233	26.5063	1.2502	1.0591	1.3951	0.1101	0.1675	0.0500	42	24.7275	22.0270	27.6500	0.5888	0.5245	0.6583	0.0330	0.0405	0.0688
20	23.8358	20.3068	26.5375	1.1918	1.0153	1.3269	0.0826	0.1834	0.0313	43	24.7661	22.0608	27.7063	0.5760	0.5130	0.6443	0.0385	0.0338	0.0563
21	23.9294	20.5122	26.5875	1.1395	0.9768	1.2661	0.0936	0.2055	0.0500	44	24.7991	22.1013	27.7438	0.5636	0.5023	0.6305	0.0330	0.0405	0.0375
22	23.9899	20.7024	26.6313	1.0905	0.9410	1.2105	0.0606	0.1902	0.0438	45	24.8376	22.1418	27.7875	0.5519	0.4920	0.6175	0.0385	0.0405	0.0438
23	24.0284	20.8323	26.6813	1.0447	0.9058	1.1601	0.0385	0.1299	0.0500

龄阶	总生长量/m			平均生长量/m			连年生长量/m			龄阶	总生长量/m			平均生长量/m			连年生长量/m
龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72	龄阶	I-63	I-69	I-72	I-63	I-69	I-72	I-63	I-69	I-72
1	3.6771	4.1200	4.2100	3.6771	4.1200	4.2100	/	/	/	24	24.0670	20.8930	26.7438	1.0028	0.8705	1.1143	0.0385	0.0608	0.0625
2	4.7170	6.1884	6.9793	2.3585	3.0942	3.4896	1.0398	2.0684	2.7693	25	24.1110	20.9740	26.7750	0.9644	0.8390	1.0710	0.0440	0.0810	0.0313
3	5.8344	9.8997	9.8189	1.9448	3.2999	3.2730	1.1174	3.7113	2.8396	26	24.1550	21.0888	26.8188	0.9290	0.8111	1.0315	0.0440	0.1148	0.0438
4	8.3917	14.3045	12.7708	2.0979	3.5761	3.1927	2.5573	4.4048	2.9520	27	24.1991	21.1900	26.8750	0.8963	0.7848	0.9954	0.0440	0.1013	0.0563
5	10.2282	16.2327	15.8230	2.0456	3.2465	3.1646	1.8364	1.9282	3.0522	28	24.2321	21.2508	26.9250	0.8654	0.7590	0.9616	0.0330	0.0608	0.0500
6	11.4884	17.1643	19.7865	1.9147	2.8607	3.2978	1.2602	0.9316	3.9636	29	24.2761	21.3723	26.9688	0.8371	0.7370	0.9300	0.0440	0.1215	0.0438
7	14.1054	18.1247	21.5298	2.0151	2.5892	3.0757	2.6170	0.9604	1.7433	30	24.3037	21.4668	27.0250	0.8101	0.7156	0.9008	0.0275	0.0945	0.0563
8	17.4589	19.3002	23.4008	2.1824	2.4125	2.9251	3.3535	1.1755	1.8710	31	24.3312	21.5208	27.1000	0.7849	0.6942	0.8742	0.0275	0.0540	0.0750
9	19.7097	19.3012	24.3863	2.1900	2.1446	2.7096	2.2508	0.0010	0.9855	32	24.3642	21.5748	27.1438	0.7614	0.6742	0.8482	0.0330	0.0540	0.0438
10	20.7474	19.3059	25.3934	2.0747	1.9306	2.5393	1.0377	0.0047	1.0072	33	24.4028	21.6153	27.1875	0.7395	0.6550	0.8239	0.0385	0.0405	0.0438
11	21.9097	19.3187	25.6142	1.9918	1.7562	2.3286	1.1623	0.0129	0.2208	34	24.4413	21.6693	27.2125	0.7189	0.6373	0.8004	0.0385	0.0540	0.0250
12	22.5350	19.3451	25.8625	1.8779	1.6121	2.1552	0.6252	0.0264	0.2483	35	24.4853	21.7030	27.2438	0.6996	0.6201	0.7784	0.0440	0.0338	0.0313
13	22.8119	19.3888	25.9938	1.7548	1.4914	1.9995	0.2769	0.0436	0.1313	36	24.5404	21.7570	27.2813	0.6817	0.6044	0.7578	0.0550	0.0540	0.0375
14	22.9716	19.4552	26.1250	1.6408	1.3897	1.8661	0.1596	0.0664	0.1313	37	24.5789	21.8245	27.3438	0.6643	0.5899	0.7390	0.0385	0.0675	0.0625
15	23.1972	19.5474	26.2250	1.5465	1.3032	1.7483	0.2257	0.0923	0.1000	38	24.6119	21.8448	27.4188	0.6477	0.5749	0.7215	0.0330	0.0203	0.0750
16	23.3459	19.6605	26.3125	1.4591	1.2288	1.6445	0.1486	0.1130	0.0875	39	24.6395	21.8988	27.4813	0.6318	0.5615	0.7046	0.0275	0.0540	0.0625
17	23.5110	19.7975	26.4000	1.3830	1.1646	1.5529	0.1651	0.1370	0.0875	40	24.6670	21.9393	27.5250	0.6167	0.5485	0.6881	0.0275	0.0405	0.0438
18	23.6431	19.9559	26.4563	1.3135	1.1087	1.4698	0.1321	0.1584	0.0563	41	24.6945	21.9865	27.5813	0.6023	0.5363	0.6727	0.0275	0.0473	0.0563
19	23.7532	20.1233	26.5063	1.2502	1.0591	1.3951	0.1101	0.1675	0.0500	42	24.7275	22.0270	27.6500	0.5888	0.5245	0.6583	0.0330	0.0405	0.0688
20	23.8358	20.3068	26.5375	1.1918	1.0153	1.3269	0.0826	0.1834	0.0313	43	24.7661	22.0608	27.7063	0.5760	0.5130	0.6443	0.0385	0.0338	0.0563
21	23.9294	20.5122	26.5875	1.1395	0.9768	1.2661	0.0936	0.2055	0.0500	44	24.7991	22.1013	27.7438	0.5636	0.5023	0.6305	0.0330	0.0405	0.0375
22	23.9899	20.7024	26.6313	1.0905	0.9410	1.2105	0.0606	0.1902	0.0438	45	24.8376	22.1418	27.7875	0.5519	0.4920	0.6175	0.0385	0.0405	0.0438
23	24.0284	20.8323	26.6813	1.0447	0.9058	1.1601	0.0385	0.1299	0.0500