藤枣生境地木本植物种间关联性与群落稳定性

doi:10.17520/biods.2019094

生物多样性 ›› 2020, Vol. 28 ›› Issue (3): 350-357. DOI: 10.17520/biods.2019094

藤枣生境地木本植物种间关联性与群落稳定性

李帅锋^1,²,郎学东^1,²,黄小波^1,²,刘万德^1,²,苏建荣^1,^2,^*(),徐崇华³,李智宏³,徐凡迪⁴

^1. 中国林业科学研究院资源昆虫研究所, 昆明 650224
^2. 国家林业与草原局普洱森林生态系统国家定位观测研究站, 昆明 650224
^3. 云南省太阳河自然保护区管理局, 云南普洱 665000
^4. 云南农业大学, 昆明 650201

收稿日期:2019-03-21 接受日期:2019-06-01 出版日期:2020-03-20 发布日期:2019-10-22
通讯作者: 苏建荣
基金资助:
国家重点研发计划(2016YFC0503100);“极小种群野生植物就地保护及生境恢复技术研究与示范”课题(2016YFC0503103);中国林业科学研究院中央级公益性科研院所基本科研业务费专项(CAFYBB2017MB013);中国林业科学研究院中央级公益性科研院所基本科研业务费专项(CAFYBB2017ZX002-4);云南省环境保护专项国家I级保护植物藤枣的致濒机制及种群扩繁技术研究(530702001712004)

Interspecific association of woody plant species and community stability in the Eleutharrhena macrocarpa habitat

Shuaifeng Li^1,²,Xuedong Lang^1,²,Xiaobo Huang^1,²,Wande Liu^1,²,Jianrong Su^1,^2,^*(),Chonghua Xu³,Zhihong Li³,Fandi Xu⁴

^1. Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224
^2. The Puer Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Kunming 650224
^3. Administration of Taiyanghe Provincial Nature Reserve, Puer, Yunnan 665000
^4. Yunnan Agricultural University, Kunming 650201

Received:2019-03-21 Accepted:2019-06-01 Online:2020-03-20 Published:2019-10-22
Contact: Jianrong Su

摘要/Abstract

摘要：

藤枣(Eleutharrhena macrocarpa)是国家Ⅰ级重点保护植物, 属于木质藤本植物, 野外数量稀少, 种群更新困难。本文通过分析云南省太阳河自然保护区藤枣生境地热带季节雨林乔木层与灌木层中木本植物种群的种间关联性以及群落的稳定性, 揭示种间关联性在藤枣种群濒危机制形成中的作用, 为极小种群的保护提供科学依据。结果表明: 藤枣生境地群落乔木层总体联结性VR (方差比率) > 1, 检验统计量W > χ_0.05(29), 灌木层种群总体联结性VR < 1, χ_0.95(29)< W < χ_0.05(29), 乔木层和灌木层分别呈显著正相关和不显著负相关。x ²检验显示乔木层与灌木层中无联结的种对占多数, 其正负关联比分别是0.238和0.279, 联结系数显示显著和极显著的负联结种对要多于正联结的种对; Pearson相关系数显示乔木层与灌木层正负关联比分别是0.376和0.511, 绝大多数种对的联结关系未达到显著水平, 种对间的独立性相对较强。藤枣与其他植物种群之间对生境有相似的适宜生态位, 通过共同利用资源而共存, 在灌木层则面临较强的种间竞争。藤枣生境地群落稳定性交点坐标为(33.92, 66.07), 显示群落具有较好的稳定性, 而群落建群种与其他种对存在较强的种间竞争, 反映热带季节雨林的脆弱性, 因此生境地群落的严格保护对藤枣种群的更新和生物多样性保育至关重要。

关键词: 热带季节雨林, 方差比率, 种间联结, 种间相关, Godron稳定性指数

Abstract

Eleutharrhena macrocarpa, an endangered liana species, experiences population regeneration barriers in natural environments. Due to its endangered status, this species has been heavily researched to understand the mechanisms behind its rarity. In this study, we studied E. macrocarpa populations in the tropical seasonal rainforest of Taiyanghe Provincial Nature Reserve in Pu’er City, Yunnan Province to find successful protecting methods for a wild plant species with extremely small populations. Utilizing various community stability and interspecific competition metrics (the Godron stability index, Chi-square analysis, Pearson correlation), the results showed that the woody plant populatios of tree layer indicated significant positive correlation based on the value of variance ratio more than one (test statistic W > χ_0.05(29)). Similarly, the woody plant populations of shrub layer indicated that no significant negative correlation and the variance ratio is less than 1 (χ_0.95(29)< W < χ_0.05(29)). Further, Chi-square test indicated that no association species pairs represented the most populations in the tree and shrub layer, and the ratios of positive and negative correlations were 0.238 and 0.279, respectively. Simultaneously, association coefficient suggested that significant and extremely significant negative species pairs were more than positive species pairs, while Pearson correlation coefficient indicated that the ratios of the positive and negative correlation were 0.376 and 0.511, respectively. We found that the association relationship of most species pairs showed no significant correlation, which mean a relative stronger interspecific independence. Eleutharrhena macroarpa population has similar adaptive niche with most woody plant populations in the tree layer, and they survived together through effective resource utilization. However, Eleutharrhena macrocarpa population had stronger competition with some species in the shrub layer. In addition, intersection point of community stability (33.92, 66.07) in the vegetative community of Eleutharrhena macrocarpa habitat suggested that the community displayed a better stability. The stronger interspecific competition between dominant species and other species also suggested the vulnerability of tropical seasonal rain forest. Therefore, strict protection of the habitat was crucial to the regeneration of Eleutharrhena macrocarpa population and biodiversity conservation.

Key words: tropical seasonal rain forest, variance ratio, interspecific association, interspecific correlation, Godron stability index

李帅锋, 郎学东, 黄小波, 刘万德, 苏建荣, 徐崇华, 李智宏, 徐凡迪 (2020) 藤枣生境地木本植物种间关联性与群落稳定性. 生物多样性, 28, 350-357. DOI: 10.17520/biods.2019094.

Shuaifeng Li, Xuedong Lang, Xiaobo Huang, Wande Liu, Jianrong Su, Chonghua Xu, Zhihong Li, Fandi Xu (2020) Interspecific association of woody plant species and community stability in the Eleutharrhena macrocarpa habitat. Biodiversity Science, 28, 350-357. DOI: 10.17520/biods.2019094.

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序号 No.	经纬度 Locality	海拔 Elevation (m)	样地面积 Area (m²)	坡向 Slope aspect	坡度 Slope	郁闭度 Coverage (%)
1	22°32° N, 101°6° E	964	900	北 North	31°	70
2	22°33° N, 101°7° E	1,052	900	东 East	25°	75
3	22°32° N, 101°6° E	1,032	400	北 North	31°	80
4	22°34° N, 101°8° E	1,237	400	南 South	22°	80
5	22°36° N, 101°3° E	1,250	300	北 North	45°	70

序号 No.	经纬度 Locality	海拔 Elevation (m)	样地面积 Area (m²)	坡向 Slope aspect	坡度 Slope	郁闭度 Coverage (%)
1	22°32° N, 101°6° E	964	900	北 North	31°	70
2	22°33° N, 101°7° E	1,052	900	东 East	25°	75
3	22°32° N, 101°6° E	1,032	400	北 North	31°	80
4	22°34° N, 101°8° E	1,237	400	南 South	22°	80
5	22°36° N, 101°3° E	1,250	300	北 North	45°	70

联结类型 Association type	类型 Types	数值范围 Value range	乔木层 Tree layer		灌木层 Shrub layer
联结类型 Association type	类型 Types	数值范围 Value range	种对数 Species pair number	百分比 %	种对数 Species pair number	百分比 %
χ²检验 Chi-square test	无联结 No association	P > 0.05	643	78.41	848	85.66
	正联结 Positive association	P < 0.01	15	1.83	12	1.21
	正联结 Positive association	0.01 < P ≤ 0.05	19	2.32	19	1.92
	负联结 Negative association	P < 0.01	0	0	21	2.12
	负联结 Negative association	0.01 < P ≤ 0.05	143	17.44	90	9.09
联结系数 Association coefficient	正联结 Positive association	AC ≥ 0.6	49	5.98	17	1.72
		0.2 ≤ AC < 0.6	151	18.41	96	9.70
		0 < AC < 0.2	59	7.20	270	27.27
	无联结 No association	AC = 0	24	2.93	0	0
	负联结 Negative association	-0.2 ≤ AC < 0	13	1.59	49	4.95
		-0.6 ≤ AC < -0.2	25	3.05	69	6.97
		AC ≤ -0.6	499	60.85	489	49.39
总数 Total			820	100.00	990	100.00

联结类型 Association type	类型 Types	数值范围 Value range	乔木层 Tree layer		灌木层 Shrub layer
联结类型 Association type	类型 Types	数值范围 Value range	种对数 Species pair number	百分比 %	种对数 Species pair number	百分比 %
χ²检验 Chi-square test	无联结 No association	P > 0.05	643	78.41	848	85.66
	正联结 Positive association	P < 0.01	15	1.83	12	1.21
	正联结 Positive association	0.01 < P ≤ 0.05	19	2.32	19	1.92
	负联结 Negative association	P < 0.01	0	0	21	2.12
	负联结 Negative association	0.01 < P ≤ 0.05	143	17.44	90	9.09
联结系数 Association coefficient	正联结 Positive association	AC ≥ 0.6	49	5.98	17	1.72
		0.2 ≤ AC < 0.6	151	18.41	96	9.70
		0 < AC < 0.2	59	7.20	270	27.27
	无联结 No association	AC = 0	24	2.93	0	0
	负联结 Negative association	-0.2 ≤ AC < 0	13	1.59	49	4.95
		-0.6 ≤ AC < -0.2	25	3.05	69	6.97
		AC ≤ -0.6	499	60.85	489	49.39
总数 Total			820	100.00	990	100.00

类型 Type	数值范围 Value range	乔木层 Tree layer		灌木层 Shrub layer
类型 Type	数值范围 Value range	种对数 Species pair number	百分比 %	种对数 Species pair number	百分比 %
正相关 Positive correlation	P ≤ 0.01	51	6.22	43	4.34
	P ≤ 0.05	20	2.44	37	3.74
	P > 0.05	153	18.66	255	25.76
负相关 Negative correlation	P ≤ 0.01	0	0	5	0.51
	P ≤ 0.05	1	0.12	22	2.22
	P > 0.05	595	72.56	628	63.43
总数 Total		820	100.00	990	100.00

藤枣生境地木本植物种间关联性与群落稳定性

Interspecific association of woody plant species and community stability in the Eleutharrhena macrocarpa habitat

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