广西天然红鳞蒲桃种群幼苗数量特征及动态分析

doi:10.17521/cjpe.2023.0052

植物生态学报 ›› 2023, Vol. 47 ›› Issue (9): 1278-1286.DOI: 10.17521/cjpe.2023.0052

广西天然红鳞蒲桃种群幼苗数量特征及动态分析

王燕玲¹, 招礼军¹^,²^,^*(), 朱栗琼¹, 莫若果¹, 林婷¹, 赵小雨¹

¹广西大学林学院, 南宁 530004
²广西森林生态与保育重点实验室, 南宁 530004

收稿日期:2023-02-21 接受日期:2023-04-26 出版日期:2023-09-20 发布日期:2023-09-28
通讯作者: * 招礼军(zhlj-70@163.com)
作者简介:** 现工作单位: 广西农业职业技术大学, 南宁 530009。
基金资助:
国家自然科学基金(31260093);国家自然科学基金(31560061);广西自然科学基金(2013GXNSFAA019057)

Seedling quantitative characteristics and dynamics of Syzygium hancei populations in Guangxi, China

WANG Yan-Ling¹, ZHAO Li-Jun¹^,²^,^*(), ZHU Li-Qiong¹, MO Ruo-Guo¹, LIN Ting¹, ZHAO Xiao-Yu¹

¹College of Forestry, Guangxi University, Nanning 530004, China
²Guangxi Key Laboratory of Forest Ecology and Conservation, Nanning 530004, China

Received:2023-02-21 Accepted:2023-04-26 Online:2023-09-20 Published:2023-09-28
Contact: * ZHAO Li-Jun(zhlj-70@163.com)
About author:** Current workplace: Guangxi Vocational University of Agriculture, Nanning 530009, China
Supported by:
National Natural Science Foundation of China(31260093);National Natural Science Foundation of China(31560061);Natural Science Foundation of Guangxi(2013GXNSFAA019057)

摘要/Abstract

摘要：

红鳞蒲桃(Syzygium hancei)是广西滨海地带季节性雨林的优势种, 在修复滨海生态环境方面具有重要作用。该研究通过对防城港市3个群落的红鳞蒲桃种群(A、B、C)进行为期2年的幼苗存活数量动态监测, 编制红鳞蒲桃幼苗的动态生命表, 绘制幼苗存活曲线、死亡率曲线、生存函数曲线。主要结果有: 1) A、C种群幼苗存活曲线都趋向于Deevey-II型, B种群幼苗趋向于Deevey-III型, 死亡率曲线前期波动较大, 后期在0.2-0.4之间波动并逐渐平稳; 2)生存分析表明, A、B、C种群幼苗生存率均呈先升后降的趋势, 后期累计死亡率稳定高于生存率, B种群幼苗生存函数较A、C种群稳定; 3)综合分析表明, 3个野外红鳞蒲桃种群幼苗天然更新能力均低下, 相较之下B种群的天然更新能力最稳定。天然更新能力低下主要是由于幼苗萌发基数不大, 同时低龄幼苗死亡率较高, 且林下光照不足, 较少幼苗存活到下一个生长阶段。

关键词: 红鳞蒲桃, 种群, 幼苗, 动态生命表, 存活曲线, 生存分析, 天然更新能力

Abstract:

Aims Syzygium hancei is the dominant species in the seasonal rainforests of the coastal zone of Guangxi. It plays an important role in restoration of the coastal ecological environment. Hence, investigating the population dynamics of natural S. hancei populations in Guangxi is of significant importance.
Methods In this study we monitored seedlings of S. hancei populations in three distinct communities (A, B and C) in Fangchenggang City over a period of two-years. Data on seedling survival rates were collected, and dynamic life tables were established. Survival curves, mortality curves, and survival function curves were constructed and analyzed.
Important findings Our results showed that: (1) The survival curves of populations A and C exhibited Deevey-II type characteristics, whereas the curve for population B displayed Deevey-III type characteristics. The mortality curves experienced substantial fluctuations during the early stage, but eventually stabilized, oscillating between 0.2 and 0.4 in the later stage. (2) Survival analysis demonstrated that the survival rates of populations A, B, and C followed an initial increase followed by a decrease. The cumulative mortality rate in the later period consistently exceeded the survival rate. Survival function fluctuations of population B were more stable compared to populations A and C. (3) The comprehensive analysis showed that all the natural regeneration capacities of those three S. hancei populations were low, with population B exhibiting the most stable capacity. The low natural regeneration capacity can be attributed to a limited germination base, high mortality rate of seedlings, and insufficient light, resulting in fewer seedlings progressing to the subsequent growth stage.

Key words: Syzygium hancei, population, seedling, dynamic life table, survival curve, survival analysis, natural regeneration capacity

王燕玲, 招礼军, 朱栗琼, 莫若果, 林婷, 赵小雨. 广西天然红鳞蒲桃种群幼苗数量特征及动态分析. 植物生态学报, 2023, 47(9): 1278-1286. DOI: 10.17521/cjpe.2023.0052

WANG Yan-Ling, ZHAO Li-Jun, ZHU Li-Qiong, MO Ruo-Guo, LIN Ting, ZHAO Xiao-Yu. Seedling quantitative characteristics and dynamics of Syzygium hancei populations in Guangxi, China. Chinese Journal of Plant Ecology, 2023, 47(9): 1278-1286. DOI: 10.17521/cjpe.2023.0052

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2023.0052

https://www.plant-ecology.com/CN/Y2023/V47/I9/1278

图/表 8

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样地编号 Sample plot No.	面积 Area	乔木层 Arbor layer			灌木层平均高度 Mean height of shrub layer (m)	草本层平均高度 Mean height of herb layer (m)	郁闭度 Canopy density (%)
样地编号 Sample plot No.	面积 Area	密度 Density (plant·hm^-2)	平均胸径 Mean DBH (cm)	平均高度 Mean height (m)	灌木层平均高度 Mean height of shrub layer (m)	草本层平均高度 Mean height of herb layer (m)	郁闭度 Canopy density (%)
A	10 m × 10 m	2 455	6.27	6.55	0.84	0.15	80
B	10 m × 10 m	1 073	6.81	6.46	1.05	0.22	35
C	10 m × 10 m	1 505	6.53	6.38	1.28	0.29	60

样地编号 Sample plot No.	面积 Area	乔木层 Arbor layer			灌木层平均高度 Mean height of shrub layer (m)	草本层平均高度 Mean height of herb layer (m)	郁闭度 Canopy density (%)
样地编号 Sample plot No.	面积 Area	密度 Density (plant·hm^-2)	平均胸径 Mean DBH (cm)	平均高度 Mean height (m)	灌木层平均高度 Mean height of shrub layer (m)	草本层平均高度 Mean height of herb layer (m)	郁闭度 Canopy density (%)
A	10 m × 10 m	2 455	6.27	6.55	0.84	0.15	80
B	10 m × 10 m	1 073	6.81	6.46	1.05	0.22	35
C	10 m × 10 m	1 505	6.53	6.38	1.28	0.29	60

变异来源 Source of variation	df	均方 Mean square	F	p
光照强度 Light intensity	2	389 435.375	20.333	0.000
地表温度 Surface temperature	2	0.229	0.030	0.970
土壤含水率 Soil water content	2	33.259	1.990	0.162

变异来源 Source of variation	df	均方 Mean square	F	p
光照强度 Light intensity	2	389 435.375	20.333	0.000
地表温度 Surface temperature	2	0.229	0.030	0.970
土壤含水率 Soil water content	2	33.259	1.990	0.162

种群 Population	时间(年-月) Time (year-month)	n_x	l_x	S_x	d_x	q_x	lnl_x	k_x
A种群 Population A	2016-03	104	1 000	1.00	-1 933	-1.93	6.91	-1.07
	2016-06	305	2 933	2.93	2 298	0.78	7.98	1.53
	2016-09	66	635	0.63	327	0.51	6.45	0.72
	2016-12	32	308	0.31	-192	-0.62	5.73	-0.48
	2017-03	52	500	0.50	279	0.56	6.21	0.81
	2017-06	23	221	0.22	86	0.39	5.40	0.49
	2017-09	14	135	0.13	29	0.21	4.91	0.25
	2017-12	11	106	0.11	-	-	4.66	-
B种群 Population B	2016-03	173	1 000	1.00	-347	-0.35	6.91	-0.30
	2016-06	233	1 347	1.35	977	0.73	7.21	1.30
	2016-09	64	370	0.27	220	0.59	5.91	0.90
	2016-12	26	150	0.15	-133	-0.89	5.01	-0.64
	2017-03	49	283	0.28	-40	-0.14	5.65	-0.13
	2017-06	56	323	0.32	86	0.27	5.78	0.31
	2017-09	41	237	0.24	75	0.32	5.47	0.38
	2017-12	28	162	0.16	-	-	5.09	-
C种群 Population C	2016-03	115	1 000	1.00	-974	-0.97	6.91	-0.68
	2016-06	227	1 974	1.97	1 687	0.85	7.59	1.93
	2016-09	33	287	0.29	148	0.52	5.66	0.73
	2016-12	16	139	0.14	-122	-0.88	4.93	-1.63
	2017-03	30	261	0.26	61	0.23	6.56	1.26
	2017-06	23	200	0.20	35	0.18	5.30	0.08
	2017-09	19	165	0.17	35	0.21	5.22	0.35
	2017-12	15	130	0.13	-	-	4.87	-

广西天然红鳞蒲桃种群幼苗数量特征及动态分析

Seedling quantitative characteristics and dynamics of Syzygium hancei populations in Guangxi, China

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种群 Population	存活曲线 Survival curve	拟合模型 Fitting model	拟合结果 Fitting result	R²	F
A种群 Population A	Deevey-II Deevey-III	N = N₀e^-bxN = N₀x^-b	N = 8.025e^-^0.022^xN = 9.526x^-^0.192	0.766 0.590	529.599 301.064
B种群 Population B	Deevey-II Deevey-III	N = N₀e^-bxN = N₀x^-b	N = 7.139e^-^0.015^xN = 8.453x^-^0.152	0.559 0.622	498.298 581.570
C种群 Population C	Deevey-II Deevey-III	N = N₀e^-bxN = N₀x^-b	N = 7.401e^-0.018^xN = 8.832x^-^0.170	0.477 0.463	260.972 254.267

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