Differences in Population Structure and Dynamic Characteristics of Davidia involucrata Baill. Between High and Low Latitude Regions

doi:10.7525/j.issn.1673-5102.2020.06.008

Abstract

Abstract:

Davidia involucrata Baill. is a rare and endangered tree species which is endemic to China. Though population characteristics of D.involucrata have been reported by many studies， the effect of latitude on the structure and dynamic characteristics of D.involucrata has been largely neglected. In this study， we compared the variance of the age structure dynamic index， static life table， viability and quantity alteration of the populations between high latitude region（Pingwu） and low latitude region（Northeastern Yunnan）. Our results showed that the population structure in Pingwu and Northeastern Yunnan were of growth type， the survival curve of the two D.involucrata populations was of a Deevey-Ⅱ type， and the population in Northeastern Yunnan displayed a higher growth trend and stronger anti-interference ability. Moreover， the population dynamics analysis revealed that younger individuals grew better in Pingwu and the middle-aged individuals competed fiercely. By contrast， younger individuals in Northeastern Yunnan population had high mortality， middle-aged individuals grew stable. Thus， based on the abovementioned findings， we conclude that latitude differences could affect population structure and dynamic characteristics of D.involucrata. The habitats of D.involucrata population at low latitude were suitable for middle-aged individuals to survive but not for younger individuals； younger individuals of D.involucrata populations at high latitude grew better， and higher mortality rate was observed in middle-aged individuals.

Key words: Davidia involucrata Baill., age structure, static life table, survival curve, viability

CLC Number:

S759.94

Yun-Fei XU, Qin-Song LIU, Wen-Juan XU, Jun-Feng TANG, Ting-Fa DONG, Bao-Zhen YANG, Xiao XU. Differences in Population Structure and Dynamic Characteristics of Davidia involucrata Baill. Between High and Low Latitude Regions[J]. Bulletin of Botanical Research, 2020, 40(6): 855-866.

Figures/Tables 11

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分布地区Location		样地面积Area(㎡)	海拔Elevation(m)	经度Longitude(E)	纬度Latitude(N)	坡向Directonof slope	坡度Slope	郁闭度Canopy density(%)	群落类型Community type
平武县 Pingwu	水田乡 Shuitian	700	1 719	104°32′16″	32°19′40″	东北Northeast	30°	89	珙桐群落Davidia involucrata community
	水田乡 Shuitian	700	1 701	104°32′45″	32°19′14″	东北Northeast	34°	85	珙桐群落Davidia involucrata community
	水田乡 Shuitian	700	1 752	104°32′40″	32°19′15″	东北Northeast	27°	85	珙桐群落Davidia involucrata community
滇东北Northeastern Yunnan	永善县三江口^*Yongshan	500	1 966	—	—	南坡South	10°	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	永善县三江口^*Yongshan	500	1 947	—	—	西坡West	10°	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	永善县三江口^*Yongshan	500	1 930	—	—	东坡East	12°	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	永善县三江口^*Yongshan	500	2 039	—	—	西坡West	10°	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	大关县罗汉坝^*Daguan	500	1 849	—	—	西坡West	10°	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	威信县海子坪^*Weixin	500	1 530	—	—	北坡North	—	—	珙桐、筇竹群落Davidia involucrata andQiongzhuea tumidissinoda community
	彝良县小草坝^*Yiliang	500	1 858	—	—	北坡North	20°	—	珙桐、绥江玉竹群落Davidia involucrata andYushania suijiangensis community
	彝良县小草坝^*Yiliang	500	1 855	—	—	北坡North	12°	—	珙桐、绥江玉竹群落Davidia involucrata andYushania suijiangensis community
	彝良县小草坝^*Yiliang	500	1 757	—	—	东坡East	30°	—	珙桐、金佛山方竹群落Davidia involucrata andChimonobambusa utilis community

种群名称 Population name	龄级 Age class	a_x	A_x	l_x	lnl_x	d_x	q_x	L_x	T_x	e_x	K_x
平武县(高纬度) Pingwu (High latitude)	Ⅰ	15	23	1 000.00	6.91	130.43	0.13	934.78	3 586.96	3.59	0.14
	Ⅱ	34	20	869.57	6.77	173.91	0.20	782.61	2 652.17	3.05	0.22
	Ⅲ	14	16	695.65	6.54	130.43	0.19	630.43	1 869.57	2.69	0.21
	Ⅳ	12	13	565.22	6.34	130.43	0.23	500.00	1 239.13	2.19	0.26
	Ⅴ	9	10	434.78	6.07	130.43	0.30	369.57	739.13	1.70	0.36
	Ⅵ	9	7	304.35	5.72	130.43	0.43	239.13	369.57	1.21	0.56
	Ⅶ	0	4	173.91	5.16	130.43	0.75	108.70	130.43	0.75	1.39
	Ⅷ	1	1	43.48	3.77	43.48	1.00	21.74	21.74	0.50	3.77
滇东北(低纬度) Northeastern Yunnan (Low latitude)	Ⅰ	19	48	1 000.00	6.91	187.50	0.19	906.25	2 833.33	2.83	0.21
	Ⅱ	52	39	812.50	6.70	229.17	0.28	697.92	1 927.08	2.37	0.33
	Ⅲ	33	28	583.33	6.37	229.17	0.39	468.75	1 229.17	2.11	0.50
	Ⅳ	19	17	354.17	5.87	208.33	0.59	250.00	760.42	2.15	0.89
	Ⅴ	13	7	145.83	4.98	20.83	0.14	135.42	510.42	3.50	0.15
	Ⅵ	7	6	125.00	4.83	20.83	0.17	114.58	375.00	3.00	0.18
	Ⅶ	5	5	104.17	4.65	20.83	0.20	93.75	260.42	2.50	0.22
	Ⅷ	8	4	83.33	4.42	20.83	0.25	72.92	166.67	2.00	0.29
	Ⅸ	1	3	62.50	4.14	20.83	0.33	52.08	93.75	1.50	0.41
	Ⅹ	2	2	41.67	3.73	20.83	0.50	31.25	41.67	1.00	0.69
	Ⅺ	1	1	20.83	3.04	20.83	1.00	10.42	10.42	0.50	3.04

种群名称 Population name	存活曲线类型 Survival curve type	方程式 Equation	R²	F	P
平武县Pingwu	Deevey-Ⅱ	Y=8.0392e^-0.072^x	0.781	21.442	0.004
平武县Pingwu	Deevey-Ⅲ	Y=7.7268x^-0.214	0.572	8.020	0.030
滇东北Northeastern Yunnan	Deevey-Ⅱ	Y=7.758e^-0.076^x	0.964	238.505	0.000
滇东北Northeastern Yunnan	Deevey-Ⅲ	Y=8.104x^-0.315	0.830	43.956	0.000

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[3]	Dan WANG, Zhongshuai ZHANG, Qingyin ZENG, Xuemin HAN. Fruiting and Seed Characteristics of Abies in Northwest Yunnan [J]. Bulletin of Botanical Research, 2023, 43(5): 647-656.
[4]	Mengwen ZHANG, Cairong ZHONG, Xiaobo LÜ, Zanshan FANG, Cheng CHENG. Population Structure and Dynamic Characteristics of Three Endangered Mangrove Species from Genus Sonneratia [J]. Bulletin of Botanical Research, 2023, 43(2): 231-241.
[5]	WANG Fei, HUO Huai-Cheng, ZHAO Yang, CAO Xiu-Wen, LIU Jin-Qian, YANG Yong-Hong, ZHANG Tao, QI Hao, WANG Ruo-Jian. Population Structure and Dynamics of Original Abies faxoniana Rehd—Rhododendron simsii Planch in High-mountain Timberline of Southern Gansu Province [J]. Bulletin of Botanical Research, 2019, 39(5): 664-672.
[6]	XU Su-Xia, HUANG Qing-Yun, LIN Chun-Song, XU Yi-Ding, LI Zi-Yang, LIU Yu-Mei, HUANG Yi-Jin. Comparison of Reproductive Biology Including Morphology of Reproductive Organs,Viability of Pollens,Flower Visitors,and Flavonols Accumulation Between Fertile and Sterile Cultivars in Bougainvillea [J]. Bulletin of Botanical Research, 2018, 38(6): 860-868.
[7]	DU Hui-Cong, ZHANG Ying, TIAN Min, WANG Cai-Xia. Study on The Seed Biological Characteristics of Chimonanthus praecox of Zhejiang Province [J]. Bulletin of Botanical Research, 2018, 38(1): 7-13.
[8]	LI Ya-Lan, LIANG Feng-Li. Stamen Dynamics and Breeding System of Lonicera alberti [J]. Bulletin of Botanical Research, 2016, 36(4): 503-510.
[9]	PAN Miao, ZUO Fei-Fei, SHENG Ji-Lu, CHANG Qiang-Qiang, FAN Jia-Jia, ZHANG Xiao-Ping. Comparison of 1000-seed Weight, Viability and Chemical Content in the Seed of Taxus chinensis var. mairei from Different Areas and Its Relationship with Ecological Factors [J]. Bulletin of Botanical Research, 2016, 36(3): 360-367.
[10]	ZHANG Qun-Fang；PENG Pei-Hao；WANG Juan；LIU Xian-An. Quantitative Characteristics of Ormosia hosiei* under Different Disturbance Levels [J]. Bulletin of Botanical Research, 2015, 35(5): 735-740.
[11]	ZHAO Tong-Xin;LIU Lin-De;ZHANG Li;WANG Yan-Jie;JIA Xing-Jun. Bionomics of Pollen and Stigma of Celastrus orbiculatus* Thunb. [J]. Bulletin of Botanical Research, 2014, 34(3): 309-316.
[12]	HU Chun;LIU Zuo-Jun;LI Fu-Xiang;LIU Feng-Mei. Detection Methods for Pollen Viability of Anemone obtusiloba* [J]. Bulletin of Botanical Research, 2013, 33(5): 582-586.
[13]	WANG Heng-Rong;LI Peng;LI Jun-Lin;LUO Yi-Bo. Characteristics of Seeds and Hybrid Seeds in Three Sympatric Cypripedium* Species [J]. Bulletin of Botanical Research, 2013, 33(1): 31-38.
[14]	WANG Ya-Li;WANG Jin-Xiu;CHANG Hong-Yu;NI Xi-Lu;TIAN Ying;QIN Bin-Bin. Flowering Biology of Lycium barbarum L. NQ-2 [J]. Bulletin of Botanical Research, 2011, 31(3): 330-335.
[15]	XIONG Neng;JIN Ze-Xin;CHEN Zuo. Population Structure and Distribution Pattern of Pinus massoniana* on Laoshan Island of Qiandao Lake Region [J]. Bulletin of Botanical Research, 2010, 30(5): 537-542.