Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu

doi:10.12302/j.issn.1000-2006.202005054

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (4): 167-176.doi: 10.12302/j.issn.1000-2006.202005054

Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu

PENG Zhiqi¹(), DONG Peng¹, ZHU Hong¹, ZHU Shuxia¹, DONG Jingjing¹, ZHONG Yuqian², ZHAI Feifei², ZHENG Aichun³, WANG Xianrong¹, YI Xiangui¹^,^*()

1. Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Cerasus Research Center, Nanjing Forestry University, Nanjing 210037, China
2. Wildlife Protection Station of Jiangsu Province, Nanjing 210036, China
3. Pukou Forestry Station of Nanjing City, Nanjing 210032, China

Received:2020-05-28 Accepted:2020-09-23 Online:2021-07-30 Published:2021-07-30
Contact: YI Xiangui E-mail:1063375736@qq.com;354067272@qq.com

Abstract

Abstract:

【Objective】The aim of this study is to understand, analyze and master the structural feature, distribution patterns, species diversity and relationships of Cerasus serrulata in natural populations on the east hillside of Yuntai Mountain, Lianyungang, which will provide a theoretical basis for the protection and utilization of germplasm resources of this landscaping tree species.【Method】Based on the survey data of the 1 hm ² fixed sample plot in the Yuntai Mountain Provincial Nature Reserve in Jiangsu Province, we explored the age structure of the C. serrulata population, and drew a static life table and survival curve to forecast time series and analyze point patterns.【Result】① In this sample, Quercus serrata and C. serrulata, which are the main building species of the community, have the highest important values, but it is not common to see the latter as one of the dominant species in the community. The diameter structure of its population is “expanding,” and the population of its younger class is relatively abundant. ② The static life table shows that the average individual viability of C. serrulata decreases with the increasing age class and that the survival curve of C. serrulata is closer to Deevey-Ⅱ. ③ The time prediction of the population age class shows that the number of individuals in each age class of the C. serrulata population will gradually increase, and that the population can naturally renew in the next two, four and six periods of age class. ④ There is a large difference in the plant density at each age group of the C. serrulata population and the whole is either randomly distributed or clustered. 【Conclusion】Fagaceae is one of the most dominant species in warm temperate broadleaved deciduous forests, both Celtis sinensis and Pistacia chinensis are also common dominant species, whereas C. serrulata is not. The population structure of C. serrulata in the Yuntai Mountain is in a stable state with a strong natural regenerative ability. Because it has played an essential role in the zonal vegetation restoration and scenic forest construction, while its protection should be strengthened. At the same time, this study also shows that revealing the structure and quantitative characteristics of special populations through the above-mentioned methods has an important theoretical value and practical significance for the protection and management of special communities.

Key words: Cerasus serrulata, population age structure, static life table, survival curve, time series prediction, point pattern analysis, Yuntai Mountain,Jiangsu Province

CLC Number:

S718.4

PENG Zhiqi, DONG Peng, ZHU Hong, ZHU Shuxia, DONG Jingjing, ZHONG Yuqian, ZHAI Feifei, ZHENG Aichun, WANG Xianrong, YI Xiangui. Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2021, 45(4): 167-176.

Figures/Tables 8

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林层 layer	序号 No.	树种 species	相对高度 relative height	相对频度 relative frequency	相对优势度/ 相对盖度 relative dominance	重要值 importance value
乔木层 arbor layer	1	短柄枹栎Q. serrata	49.54	15.61	42.64	35.93
	2	山樱花C. serrulata	7.60	12.85	15.87	12.17
	3	栓皮栎Q. variabilis	6.55	9.77	7.41	7.91
	4	漆T. vernicifluum	3.64	5.90	3.10	4.21
	5	苦枥木F. insularis	3.26	6.56	2.07	3.96
	6	野茉莉Styrax japonicus	3.02	4.07	2.50	3.20
	7	白木乌桕Sapium japonicum	3.09	4.07	1.97	3.04
	8	黑松Pinus thunbergii	2.81	2.36	2.86	2.68
灌木层 shrub layer	1	满山红R. mariesii	34.66	25.26	10.32	23.41
	2	短柄枹栎Q. serrata	18.10	14.46	8.88	13.81
	3	苦枥木F. insularis	5.11	5.04	11.34	7.16
	4	野漆树T. succedaneum	3.62	3.82	5.47	4.30
	5	白檀Symplocos paniculata	2.89	4.71	3.62	3.74
	6	山樱花C. serrulata	2.14	2.27	4.82	3.08
	7	野茉莉Styrax japonicus	2.84	3.09	3.04	2.99
	8	白木乌桕Sapium japonicum	1.81	2.03	4.84	2.89

龄级age class	a_x	l_x	lnl_x	d_x	q_x	L_x	T_x	K_x	e_x
Ⅰ	147	1000	6.908	41	0.041	979.5	3228	0.042	3.295
Ⅱ	141	959	6.866	183	0.191	867.5	2248	0.212	2.591
Ⅲ	114	776	6.654	245	0.316	653.5	1381	0.379	2.112
Ⅳ	78	531	6.275	259	0.488	401.5	727	0.669	1.811
Ⅴ	40	272	5.606	150	0.551	197.0	326	0.802	1.652
Ⅵ	18	122	4.804	68	0.557	88.0	129	0.815	1.460
Ⅶ	8	54	3.989	27	0.500	40.5	41	0.693	1.000
Ⅷ	4	27	3.296	-	-	-	-	-	-

Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu

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龄级 age class	原始数量 original quantity	M₂₍₁₎	M₄₍₁₎	M₆₍₁₎	M₈₍₁₎
Ⅰ	147	-	-	-	-
Ⅱ	141	144	-	-	-
Ⅲ	114	128	-	-	-
Ⅳ	78	96	120	-	-
Ⅴ	40	59	93	-	-
Ⅵ	18	30	63	90	-
Ⅶ	8	13	36	67	-
Ⅷ	4	6	18	44	69

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龄级 age class	原始数量 original quantity	M₂₍₁₎	M₄₍₁₎	M₆₍₁₎	M₈₍₁₎
Ⅰ	147	-	-	-	-
Ⅱ	141	144	-	-	-
Ⅲ	114	128	-	-	-
Ⅳ	78	96	120	-	-
Ⅴ	40	59	93	-	-
Ⅵ	18	30	63	90	-
Ⅶ	8	13	36	67	-
Ⅷ	4	6	18	44	69

龄级 age class	原始数量 original quantity	M₂₍₁₎	M₄₍₁₎	M₆₍₁₎	M₈₍₁₎
Ⅰ	147	-	-	-	-
Ⅱ	141	144	-	-	-
Ⅲ	114	128	-	-	-
Ⅳ	78	96	120	-	-
Ⅴ	40	59	93	-	-
Ⅵ	18	30	63	90	-
Ⅶ	8	13	36	67	-
Ⅷ	4	6	18	44	69