Structure and dynamic characteristics of Gymnocarpos przewalskii in different habitats

doi:10.17521/cjpe.2015.0095

Abstract

Abstract: Aims

Gymnocarpos przewalskii is a relict plant of the Tethys flora, which is also one of the constructive species in stony desert. Our objective was to determine the structure and dynamic characteristics of G. przewalskii in different habitats.

Methods

Based on the equal-area plot investigations in three habitats of G. przewalskii, the static life table was established, survival curves and the function curves derived from the survival analysis were also constructed to evaluate the population characteristics. The population dynamics were predicted by a time-sequence model.

<i>Important findings</i>

The survival curves of G. przewalskii appear to approach the Deevey-II type, which indicate that the mortality rate in different size classes was similar, and the population fit in with the growing type in all habitats, but sensitive to environment disturbances. The population size of G. przewalskii was largest in flooding lands, medium in gullies and smallest in the flat desert and the age structure showed that the flooding lands and gullies are better habitats for the growth of G. przewalskii. The survival analysis and the time-sequence model demonstrated that the lack of young individuals could be the major cause for population declines of G. przewalskii in all habitats; moreover, a decline is likely to occur in the flat desert earlier and quicker.

Key words: Gymnocarpos przewalskii, habitat, life table, survival analysis, time sequence analysis

Li-Long WANG, Liang WANG, Li-Fang ZHANG, Yu-Yang LIU, Shi-Jian XU. Structure and dynamic characteristics of Gymnocarpos przewalskii in different habitats[J]. Chin J Plant Ecol, 2015, 39(10): 980-989.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0095

https://www.plant-ecology.com/EN/Y2015/V39/I10/980

Figures/Tables 10

References 23

[1]	Chai YQ, Cao ZZ, Chai ZS (2010). A study on species diversity of a Gymnocarpos przewalskii community in the Subei desert.Acta Prataculturae Sinica ,19(1), 21-27. (in Chinese with English abstract)
	[柴永青, 曹致中, 蔡卓山 (2010). 肃北地区裸果木荒漠群落构成特征及物种多样性研究. 草业学报, 19(1), 21-27.]
[2]	Chen XD (1999). A study on the method of quantitative analysis for plant population and community structural dynamics.Acta Ecologica Sinica, 18, 214-217. (in Chinese with English abstract)
	[陈晓德 (1999). 植物种群与群落结构动态量化分析方法研究. 生态学报, 18, 214-217.]
[3]	Deevey ES Jr (1947). Life tables for natural populations of animals.The Quarterly Review of Biology, 22, 283-314.
[4]	Gurevitch J, Scheiner SM, Fox GA (2002). The Ecology of Plants. Sinauer Associates, Sunderland, Massachusetts, USA.
[5]	Harcombe PA (1987). Tree life tables.Bioscience, 37, 557-568.
[6]	Hett JM, Loucks OL (1976). Age structure models of balsam fir and eastern hemlock.The Journal of Ecology, 64, 1029-1044.
[7]	Hong W, Wang XG, Wu CZ, He JD, Liao CZ, Cheng Y, Feng L (2004). Life table and spectral analysis of endangered plant Taxus chinensis var. mairei population.Chinese Journal of Applied Ecology ,15, 1109-1112. (in Chinese with English abstract)
	[洪伟, 王新功, 吴承祯, 何东进, 廖成章, 程煜, 封磊 (2004). 濒危植物南方红豆杉种群生命表及谱分析. 应用生态学报, 15, 1109-1112.]
[8]	Jiang H (1992). Population Ecology of Spruce. China Forestry Publishing House, Beijing. (in Chinese)
	[江洪 (1992). 云杉种群生态学. 中国林业出版社, 北京.]
[9]	Ma DH (2006). Study on water resources development and utilization of Shule River Basin.Water Resources and Hydropower Engineering, 37(4), 1-4. (in Chinese with English abstract)
	[马德海 (2006). 疏勒河流域水资源开发利用研究. 水利水电技术, 37(4), 1-4.]
[10]	Ma SM, Zhang ML, Sanderson SC (2012). Phylogeography of the rare Gymnocarpos przewalskii(Caryophyllaceae): Indications of multiple glacial refugia in north-western China.Australian Journal of Botany ,60, 20-31.
[11]	Ma SM, Zhang ML, Zhang HX, Meng HH, Chen X (2010). Predicting potential geographical distributions and patterns of the relic plant Gymnocarpos przewalskii using maximum entropy and genetic algorithm for rule-set prediction.Chinese Journal of Plant Ecology ,34, 1327-1335. (in Chinese with English abstract)
	[马松梅, 张明理, 张宏祥, 孟宏虎, 陈曦 (2010). 利用最大熵模型和规则集遗传算法模型预测孑遗植物裸果木的潜在地理分布及格局. 植物生态学报, 34, 1327-1335.]
[12]	Ma SM, Zhang ML. (2012). Phylogeography and conservation genetics of the relic Gymnocarpos przewalskii(Caryophyllaceae) restricted to northwestern China.Conservation Genetics ,13, 1531-1541.
[13]	Shen SK, Ma HY, Wang YH, Wang BY, Shen GZ (2008). The structure and dynamics of natural population of the endangered plant Euryodendron excelsum H. T. Chang.Acta Ecologica Sinica ,28, 2404-2412. (in Chinese with English abstract)
	[申仕康, 马海英, 王跃华, 王博轶, 申国柱 (2008). 濒危植物猪血木(Euryodendron excelsum H. T. Chang)自然种群结构及动态. 生态学报, 28, 2404-2412.]
[14]	Wang W, Liu CR, Ma KP, Yu SL (1999). Population structure and dynamics of Quercus liaotungensis in two broad-leaved deciduous forests in Dongling Mountain, northern China.Acta Botanica Sinica ,41, 425-432. (in Chinese with English abstract)
	[王巍, 刘灿然, 马克平, 于顺利 (1999). 东灵山两个落叶阔叶林中辽东栎种群结构和动态. 植物学报, 41, 425-432.]
[15]	Wang ZB, Zhou XJ (2010). Research progress on rare endangered plant Gymnocarpos przewalskii.Resource Development & Market ,26, 436-437, 446. (in Chinese with English abstract)
	[汪之波, 周向军 (2010). 珍稀濒危植物裸果木研究进展. 资源开发与市场, 26, 436-437, 446.]
[16]	Wu CZ, Hong W, Xie JS, Wu JL (2000). Life table analysis of Tsuga longibracteata population.Chinese Journal of Applied Ecology ,11, 333-336. (in Chinese with English abstract)
	[吴承祯, 洪伟, 谢金寿, 吴继林 (2000). 珍稀濒危植物长苞铁杉种群生命表分析. 应用生态学报, 11, 333-336.]
[17]	Xiao YA, He P, Li XH, Deng HP (2004). Study on numeric dynamics of natural populations of the endangered species Disanthus cercidifolius var. longipes.Acta Phytoecologica Sinica ,28, 252-257. (in Chinese with English abstract)
	[肖宜安, 何平, 李晓红, 邓洪平 (2004). 濒危植物长柄双花木自然种群数量动态. 植物生态学报, 28, 252-257.]
[18]	Xie TT, Su PX, Zhou ZJ, Zhang HN, Li SJ (2014). Structure and dynamic characteristics of Calligonum mongolicum population in the desert-oasis ecotone.Acta Ecologica Sinica ,34, 4272-4279. (in Chinese with English abstract)
	[解婷婷, 苏培玺, 周紫鹃, 张海娜, 李善家 (2014). 荒漠绿洲过渡带沙拐枣种群结构及动态特征. 生态学报, 34, 4272-4279.]
[19]	Xie ZQ, Chen WL, Lu P, Hu D (1999). The demography and age structure of the endangered plant population of Cathaya argyrophylla.Acta Ecologica Sinica ,19, 523-528. (in Chinese with English abstract)
	[谢宗强, 陈伟烈, 路鹏, 胡东 (1999). 濒危植物银杉的种群统计与年龄结构. 生态学报, 19, 523-528.]
[20]	Yang FX, Wang SQ, Xu HG, Li BQ (1991). The theory of survival analysis and its application to life table.Acta Ecologica Sinica, 11, 153-158. (in Chinese with English abstract)
	[杨凤翔, 王顺庆, 徐海根, 李邦庆 (1991). 生存分析理论及其在研究生命表中的应用. 生态学报, 11, 153-158.]
[21]	Yang JM, Chen XL, Gong DJ (2013). Study on species diversity of rare endangered plant Gymnocarpos przewalskii communities.Journal of Anhui Agricultural Sciences ,41, 8508-8511. (in Chinese with English abstract)
	[杨建美, 陈学林, 龚大洁 (2013). 珍稀濒危植物裸果木群落物种多样性研究. 安徽农业科学, 41, 8508-8511.]
[22]	Yi XM, Zhang Y, Ji LZ (2013). Population structure of Phellodendron amurense in Changbai Mountains of northeast China.Chinese Journal of Ecology ,32, 2257-2262.
	[易雪梅, 张悦, 姬兰柱 (2013). 长白山黄檗种群结构. 生态学杂志, 32, 2257-2262.]
[23]	Zheng GZ, Yue LP, He JF, Wang JX, Zhang YL (2006). Grain-size characteristics of the sediments at Palaeoswamp in Anxi County in downstream of Shulehe River during Holocene and its paleoclimatic significance.Acta Sedimentologica Sinica, 24, 733-739. (in Chinese with English abstract)
	[郑国璋, 岳乐平, 何军锋, 王建新, 张玉玲 (2006). 疏勒河下游安西古沼泽全新世沉积物粒度特征及其古气候环境意义. 沉积学报, 24, 733-739.]

生境 Habitat	物种名称 Species name	平均密度 Mean density (plants·plot^-1)	平均高度 Mean height (m)	平均冠幅 Mean crown (m)	平均盖度 Mean canopy (%)	重要值 Important value	群落组成 Community composition
水冲滩地 Flooding land (20)	1. 膜果麻黄 Ephedra przewalskii	11.02	0.29	1.06	3.20	0.13	膜果麻黄 E. przewalskii + 裸果木 G. przewalskii + 合头草 S. regelii
	2. 裸果木 Gymnocarpos przewalskii	10.60	0.34	0.74	3.10	0.12
	3. 合头草 Sympegma regelii	7.31	0.42	0.78	2.23	0.10
	4. 红砂 Reaumuria songarica	4.17	0.38	0.80	1.26	0.07
	5. 细枝岩黄芪 Hedysarum scoparium	1.61	0.62	1.18	0.66	0.06
山间冲沟 Gully (18)	1. 合头草 Sympegma regelii	13.80	0.43	0.80	3.00	0.19	合头草 S. regelii + 泡泡刺 N. sphaerocarpa + 裸果木 G. przewalskii
	2. 泡泡刺 Nitraria sphaerocarpa	4.00	0.29	1.35	3.20	0.13
	3. 裸果木 Gymnocarpos przewalskii	4.10	0.36	0.85	3.00	0.12
	4. 红砂 Reaumuria songarica	2.80	0.27	0.68	0.80	0.06
	5. 沙拐枣 Calligonum mongolicum	0.41	0.56	1.17	0.42	0.05
平缓戈壁 Flat desert (18)	1. 红砂 Reaumuria songarica	11.80	0.26	0.75	2.20	0.14	红砂 R. songarica + 泡泡刺 N. sphaerocarpa + 合头草 S. regelii
	2. 泡泡刺 Nitraria sphaerocarpa	7.02	0.27	0.91	1.81	0.11
	3. 合头草 Sympegma regelii	6.68	0.39	0.60	1.80	0.10
	4. 膜果麻黄 Ephedra przewalskii	2.91	0.37	0.95	1.92	0.09
	5. 裸果木 Gymnocarpos przewalskii	2.64	0.42	0.81	1.85	0.09

生境 Habitat	物种名称 Species name	平均密度 Mean density (plants·plot^-1)	平均高度 Mean height (m)	平均冠幅 Mean crown (m)	平均盖度 Mean canopy (%)	重要值 Important value	群落组成 Community composition
水冲滩地 Flooding land (20)	1. 膜果麻黄 Ephedra przewalskii	11.02	0.29	1.06	3.20	0.13	膜果麻黄 E. przewalskii + 裸果木 G. przewalskii + 合头草 S. regelii
	2. 裸果木 Gymnocarpos przewalskii	10.60	0.34	0.74	3.10	0.12
	3. 合头草 Sympegma regelii	7.31	0.42	0.78	2.23	0.10
	4. 红砂 Reaumuria songarica	4.17	0.38	0.80	1.26	0.07
	5. 细枝岩黄芪 Hedysarum scoparium	1.61	0.62	1.18	0.66	0.06
山间冲沟 Gully (18)	1. 合头草 Sympegma regelii	13.80	0.43	0.80	3.00	0.19	合头草 S. regelii + 泡泡刺 N. sphaerocarpa + 裸果木 G. przewalskii
	2. 泡泡刺 Nitraria sphaerocarpa	4.00	0.29	1.35	3.20	0.13
	3. 裸果木 Gymnocarpos przewalskii	4.10	0.36	0.85	3.00	0.12
	4. 红砂 Reaumuria songarica	2.80	0.27	0.68	0.80	0.06
	5. 沙拐枣 Calligonum mongolicum	0.41	0.56	1.17	0.42	0.05
平缓戈壁 Flat desert (18)	1. 红砂 Reaumuria songarica	11.80	0.26	0.75	2.20	0.14	红砂 R. songarica + 泡泡刺 N. sphaerocarpa + 合头草 S. regelii
	2. 泡泡刺 Nitraria sphaerocarpa	7.02	0.27	0.91	1.81	0.11
	3. 合头草 Sympegma regelii	6.68	0.39	0.60	1.80	0.10
	4. 膜果麻黄 Ephedra przewalskii	2.91	0.37	0.95	1.92	0.09
	5. 裸果木 Gymnocarpos przewalskii	2.64	0.42	0.81	1.85	0.09

种群动态指数级 Dynamic index	动态指数 Dynamic index value (%)
种群动态指数级 Dynamic index	水冲滩地 Flooding land	山间冲沟 Gully	平缓戈壁 Flat desert
V₁	-26.67	-40.74	-60.00
V₂	-10.45	40.74	-77.27
V₃	-5.63	-23.81	-37.14
V₄	11.27	-30.00	20.00
V₅	31.75	46.67	0.00
V₆	60.47	31.25	71.43
V₇	35.29	36.36	75.00
V₈	72.73	85.71	0.00
V₉	66.67	-66.67	50.00
V_pi	12.72	15.66	15.73
V' pi	1.27	1.57	1.57

种群动态指数级 Dynamic index	动态指数 Dynamic index value (%)
种群动态指数级 Dynamic index	水冲滩地 Flooding land	山间冲沟 Gully	平缓戈壁 Flat desert
V₁	-26.67	-40.74	-60.00
V₂	-10.45	40.74	-77.27
V₃	-5.63	-23.81	-37.14
V₄	11.27	-30.00	20.00
V₅	31.75	46.67	0.00
V₆	60.47	31.25	71.43
V₇	35.29	36.36	75.00
V₈	72.73	85.71	0.00
V₉	66.67	-66.67	50.00
V_pi	12.72	15.66	15.73
V' pi	1.27	1.57	1.57

生境 Habitat	龄级 Age class	高度 Height (cm)	A_x	a_x	l_x	d_x	q_x	L_x	T_x	e_x	lnl_x	K_x
水冲滩地 Flooding land	I	H < 10	44	71	1 000	70	0.07	965	4 876	4.88	6.91	0.07
	II	10 ≤ H < 20	60	66	930	71	0.08	895	3 911	4.21	6.84	0.08
	III	20 ≤ H < 30	67	61	859	70	0.08	824	3 016	3.51	6.76	0.09
	IV	30 ≤ H < 40	71	56	789	71	0.09	753	2 192	2.78	6.67	0.09
	V	40 ≤ H < 50	63	51	718	281	0.39	578	1 439	2.00	6.58	0.50
	VI	50 ≤ H < 60	43	31	437	113	0.26	381	861	1.97	6.08	0.30
	VII	60 ≤ H < 70	17	23	324	113	0.35	268	480	1.48	5.78	0.43
	VIII	80 ≤ H < 90	11	15	211	112	0.53	155	212	1.00	5.35	0.75
	IX	90 ≤ H < 100	3	7	99	85	0.86	57	57	0.58	4.60	1.96
	X	H ≥ 100	3	1	14	-	-	-	-	-	2.64	-
山间冲沟 Gully	I	H < 10	16	28	1 000	107	0.11	946	4 661	4.66	6.91	0.12
	II	10 ≤ H < 20	27	25	893	107	0.12	839	3 714	4.16	6.79	0.12
	III	20 ≤ H < 30	16	22	786	107	0.14	732	2 875	3.66	6.67	0.15
	IV	30 ≤ H < 40	21	19	679	108	0.16	625	2 143	3.16	6.52	0.17
	V	40 ≤ H < 50	30	16	571	107	0.19	518	1 518	2.66	6.35	0.21
	VI	50 ≤ H < 60	16	13	464	107	0.23	411	1 000	2.15	6.14	0.26
	VII	60 ≤ H < 70	11	10	357	107	0.30	304	589	1.65	5.88	0.36
	VIII	80 ≤ H < 90	7	7	250	107	0.43	196	286	1.14	5.52	0.56
	IX	90 ≤ H < 100	0	4	143	107	0.75	89	89	0.63	4.96	1.38
	X	H ≥ 100	3	1	36	-	-	-	-	-	3.58	-
平缓戈壁 Flat desert	I	H < 10	2	38	1 000	158	0.16	921	3 408	3.41	6.91	0.17
	II	10 ≤ H < 20	5	32	842	158	0.19	763	2 487	2.95	6.74	0.21
	III	20 ≤ H < 30	22	26	684	158	0.23	605	1 724	2.52	6.53	0.26
	IV	30 ≤ H < 40	35	20	526	158	0.30	447	1 118	2.13	6.27	0.36
	V	40 ≤ H < 50	28	14	368	157	0.43	289	671	1.82	5.91	0.56
	VI	50 ≤ H < 60	28	8	211	79	0.38	171	382	1.81	5.35	0.47
	VII	60 ≤ H < 70	8	5	132	53	0.40	105	211	1.60	4.88	0.51
	VIII	80 ≤ H < 90	2	3	79	26	0.33	66	105	1.33	4.37	0.40
	IX	90 ≤ H < 100	2	2	53	27	0.51	39	39	0.75	3.97	0.71
	X	H ≥ 100	1	1	26	-	-	-	-	-	3.26	-