Detecting density dependence on tree survival in a deciduous broad- leaved forest in Baotianman National Nature Reserve

doi:10.17520/biods.2015134

Abstract

Abstract:

It has been found that density dependence plays a crucial role in determination of species distribution and coexistence, and the effect of negative density dependence also plays an important part among phylogenetically related species. Based on two census datasets in 2009 and 2014 of the 1-ha deciduous broad- leaved forest plot in Baotianman National Nature Reserve, generalized linear mixed models (GLMMs) were used to examine the density dependence on individual survival of the top 11 species (with high important value) at different neighborhood scales and different DBH sizes (1 cm ≤ DBH< 5 cm, 5 cm ≤ DBH < 10 cm, DBH ≥ 10 cm). The results showed that (1) mean annual mortality and recruitment rate of individuals (DBH ≥ 1 cm) were 5.85% and 0.27%, respectively; (2) survival rate of 5 tree species was negatively correlated with abundance or neighbor conspecific basal area; (3) density dependence and phylogenetic diversity exerted significant effects on survival of small individuals (at 5 m neighborhood scale), whereas no significant influence on medium trees. With increasing tree size, phylogenetic diversity exerted important effect on large individuals at 7.5 m and 10 m neighborhood scales. In conclusion, density dependence and phylogenetic diversity play different roles on tree survival at different life stages and neighborhood scales in the deciduous broad-leaved forest in Baotianman National Nature Reserve.

http://jtp.cnki.net/bilingual/detail/html/SWDY201606004

Key words: density dependence, generalized linear mixed models (GLMMs), neighborhood analysis, phylogenetic density dependence

Xiaojing Liu, Siyuan Ren, Luxin Li, Yongzhong Ye, Zhiliang Yuan, Ting Wang. Detecting density dependence on tree survival in a deciduous broad- leaved forest in Baotianman National Nature Reserve[J]. Biodiv Sci, 2016, 24(6): 639-648.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2015134

https://www.biodiversity-science.net/EN/Y2016/V24/I6/639

Figures/Tables 7

References 35

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径级 DBH size	物种数 Number of species		个体数 Number of individuals		死亡数(死亡率) Number of mortality (mortality rate, %)	新增数(增员率) Number of recruitment (recruitment rate, %)
径级 DBH size	2009	2014	2009	2014	死亡数(死亡率) Number of mortality (mortality rate, %)	新增数(增员率) Number of recruitment (recruitment rate, %)
小径级 Small DBH size (1 cm ≤ DBH < 5 cm)	54	46	1,538	1,091	482 (31.34)	35 (2.28)
中径级 Medium DBH size (5 cm ≤ DBH < 10 cm)	39	35	600	523	197 (32.83)	120 (20.0)
大径级 Large DBH size (DBH ≥ 10 cm)	22	24	417	381	68 (16.31)	32 (7.68)
总计 Total (DBH ≥ 1 cm)	58	53	2,555	1,995	747 (29.24)	187

径级 DBH size	物种数 Number of species		个体数 Number of individuals		死亡数(死亡率) Number of mortality (mortality rate, %)	新增数(增员率) Number of recruitment (recruitment rate, %)
径级 DBH size	2009	2014	2009	2014	死亡数(死亡率) Number of mortality (mortality rate, %)	新增数(增员率) Number of recruitment (recruitment rate, %)
小径级 Small DBH size (1 cm ≤ DBH < 5 cm)	54	46	1,538	1,091	482 (31.34)	35 (2.28)
中径级 Medium DBH size (5 cm ≤ DBH < 10 cm)	39	35	600	523	197 (32.83)	120 (20.0)
大径级 Large DBH size (DBH ≥ 10 cm)	22	24	417	381	68 (16.31)	32 (7.68)
总计 Total (DBH ≥ 1 cm)	58	53	2,555	1,995	747 (29.24)	187

物种 Species	拉丁名 Latin name	重要值 IV
物种 Species	拉丁名 Latin name	2009	2014
槲栎	Quercus aliena	20.46	21.65
水榆花楸	Sorbus alnifolia	16.69	19.17
三桠乌药	Lindera obtusiloba	11.26	7.59
青榨槭	Acer davidii	9.62	10.88
野茉莉	Styrax japonicus	4.94	5.72
毛樱桃	Cerasus tomentosa	3.49	3.53
连翘	Forsythia suspensa	2.49	2.75
白檀	Symplocos paniculata	2.42	1.88
卫矛	Euonymus alatus	2.42	2.41
秦岭木姜子	Litsea tsinlingensis	2.38
元宝槭	Acer truncatum	2.24	2.70
千金榆	Carpinus cordata	1.75	2.00
山梅花	Philadelphus incanus	1.59	1.35
暖木	Meliosma veitchioru	1.52	1.74
泡花树	Meliosma cuneifolia	1.44	1.59
马鞍树	Maackia hupehensi	1.55
桦叶荚蒾	Viburnum betulifolium	1.32	1.59
四照花	Dendrobenthamia japonica var. chinensis	1.25	1.55
华东椴	Tilia japonica	1.06
老鸹铃	Styrax hemsleyanus		1.02
灯台树	Bothrocaryum controversum		0.94
粉椴	Tilia oliveri		0.92
其他	Others	10.12	9.03

物种 Species	拉丁名 Latin name	重要值 IV
物种 Species	拉丁名 Latin name	2009	2014
槲栎	Quercus aliena	20.46	21.65
水榆花楸	Sorbus alnifolia	16.69	19.17
三桠乌药	Lindera obtusiloba	11.26	7.59
青榨槭	Acer davidii	9.62	10.88
野茉莉	Styrax japonicus	4.94	5.72
毛樱桃	Cerasus tomentosa	3.49	3.53
连翘	Forsythia suspensa	2.49	2.75
白檀	Symplocos paniculata	2.42	1.88
卫矛	Euonymus alatus	2.42	2.41
秦岭木姜子	Litsea tsinlingensis	2.38
元宝槭	Acer truncatum	2.24	2.70
千金榆	Carpinus cordata	1.75	2.00
山梅花	Philadelphus incanus	1.59	1.35
暖木	Meliosma veitchioru	1.52	1.74
泡花树	Meliosma cuneifolia	1.44	1.59
马鞍树	Maackia hupehensi	1.55
桦叶荚蒾	Viburnum betulifolium	1.32	1.59
四照花	Dendrobenthamia japonica var. chinensis	1.25	1.55
华东椴	Tilia japonica	1.06
老鸹铃	Styrax hemsleyanus		1.02
灯台树	Bothrocaryum controversum		0.94
粉椴	Tilia oliveri		0.92
其他	Others	10.12	9.03

种名 Species	参数 Parameter	邻体距离 Neighbourhood distance
种名 Species	参数 Parameter	5 m	7.5 m	10 m
槲栎 Quercus aliena	CON	0	0	0
	HET	+	+	0
	CONBA	+++	+	0
	HETBA	- - -	- - -	- - -
水榆花楸 Sorbus alnifolia	CON	+++	+++	+++
	HET	- - -	- - -	- - -
	CONBA	- - -	- - -	- - -
	HETBA	+++	+++	+++
青榨槭 Acer davidii	CON	0	0	0
	HET	0	0	0
	CONBA	- - -	- - -	- - -
	HETBA	0	0	0
三桠乌药 Lindera obtusiloba	CON	0	+	++
	HET	-	-	-
	CONBA	- -	- -	- -
	HETBA	0	0	0
野茉莉 Styrax japonicus	CON	- - -	- - -	- - -
	HET	0	0	0
	CONBA	-	-	-
	HETBA	+	0	0
元宝槭 Acer truncatum	CON	0	0	0
	HET	- -	-	- -
	CONBA	0	-	- -
	HETBA	0	0	0
毛樱桃 Cerasus tomentosa	CON	- -	- -	-
	HET	0	0	0
	CONBA	0	0	-
	HETBA	0	0	0
白檀 Symplocos paniculata	CON	0	0	0
	HET	0	0	0
	CONBA	-	- -	- -
	HETBA	0	0	0
秦岭木姜子 Litsea tsinlingensis	CON	0	0	0
	HET	0	0	0
	CONBA	0	0	0
	HETBA	++	+	0
千金榆 Carpinus cordata	CON	0	-	- -
	HET	0	0	0
	CONBA	0	0	0
	HETBA	0	0	0
暖木 Meliosma veitchiorum	CON	- -	- - -	- -
	HET	0	0	0
	CONBA	0	0	0
	HETBA	0	0	+