Niche and Interspecific Association of Plant Communities in the Yani Wetland Shoals

doi:10.16258/j.cnki.1674-5906.2025.10.006

Ecology and Environmental Sciences ›› 2025, Vol. 34 ›› Issue (10): 1558-1568.DOI: 10.16258/j.cnki.1674-5906.2025.10.006

• Research Article [Ecology] • Previous Articles Next Articles

Niche and Interspecific Association of Plant Communities in the Yani Wetland Shoals

NGA Wang norbu¹^,²(), WANG Junwei¹^,², ZENG Zhefei¹^,², LI Wei¹^,², NAO Zengcuo¹^,², TAN Xin¹^,², LA Qiong¹^,²^,^*()

1. Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education/School of Ecology and Environment, Xizang University, Lhasa 850000, P. R. China
2. Xizang Yani Wetland Ecosystem Positioning Observation Research Station, Nyingchi 860000, P. R. China

Received:2025-03-15 Online:2025-10-18 Published:2025-09-26

西藏雅尼湿地洲滩植物群落优势种生态位及种间联结性

阿旺罗布¹^,²(), 王俊伟¹^,², 曾哲飞¹^,², 李伟¹^,², 闹增措¹^,², 谭鑫¹^,², 拉琼¹^,²^,^*()

1.西藏大学生态环境学院/青藏高原生物多样性与生态环境保护教育部重点实验室，西藏拉萨 850000
2.西藏雅尼湿地生态系统定位观测研究站，西藏林芝 860000

通讯作者: *E-mail: lhagchong@163.com
作者简介:阿旺罗布（1999年生），男（藏族），硕士研究生，主要从事高原植物群落生态学研究。E-mail: 3522952963@qq.com
基金资助:
国家自然科学基金项目(31760127);生态学一流学科建设项目(00060906-01);生态学一流学科建设项目(00060835/001);西藏自治区科技计划项目(XZ202303ZY0002G);西藏自治区科技重大专项(XZ202402ZD0005)

Abstract

Abstract:

This study aimed to elucidate the niche characteristics and interspecific associations of plant communities in the floodplain of the Yani Wetland in Xizang, providing a scientific basis for ecological restoration and biodiversity conservation in typical high-altitude riverine wetlands. Based on the plot survey data, the niche breadth and overlap of the dominant species were measured. Variance ratio (V_R), chi-square test, association coefficient (A_c), and Spearman correlation analysis were employed to examine the niche and interspecific associations among 15 dominant plant species in the floodplain plant communities of the Yani Wetland. The results showed that 67 plant species were recorded in the Yani Wetland plant communities, belonging to 57 genera and 26 families, primarily from the Compositae, Poaceae, and Cyperaceae. Among them, Orinus thoroldii, Myricaria wardii, and Salix cheilophila exhibited high importance values and niche breadth, occupying dominant positions in the competition within their community. The overall niche overlap values were low, indicating limited similarity in environmental resource utilization among species, with interspecific competition tending toward equilibrium, which suggest mid-stage natural succession. The overall interspecific association showed a significant positive correlation between these two species. However, the χ² test, A_c values, and Spearman correlation analysis revealed mostly non-significant associations among species, indicating relatively weak interspecific relationships between them. Regression analysis demonstrated a highly significant positive correlation between the Spearman rank correlation coefficients and A_c values of the dominant species, and their niche overlap and niche similarity coefficients. Therefore, in the natural vegetation restoration of this river valley region, priority should be given to planting species with broad niches and strong adaptability in complementary combinations to restore community stability.

Key words: Yani wetland, dominant species, ecological niche, interspecific association, regression analysis

摘要：

该研究旨在揭示西藏雅尼湿地洲滩植物群落的生态位特征及种间联结性，为高原典型河流湿地的生态修复和生物多样性保护提供科学依据。基于样地调查数据，测定了主要物种的生态位宽度和生态位重叠，采用方差比率（variance ratio，V_R）、卡方检验、种间联结系数（association coefficient，A_c）和Spearman检验，对雅尼湿地洲滩优势植物群落中的15个主要植物物种进行了生态位和种间联结性分析。结果表明，雅尼湿地植物群落调查中共记录植物67种，隶属于26科57属，主要以菊科（Compositae）、禾本科（Poaceae）和莎草科（Cyperaceae）为主。其中，固沙草（Orinus thoroldii）、小花水柏枝（Myricaria wardii）和乌柳（Salix cheilophila）具有较高的重要值和生态位宽度，在群落竞争中占据优势地位。总体生态位重叠值较低，表明物种对环境资源的利用相似性较低，各物种间竞争趋于平衡，处于自然演替中期阶段；总体联结性呈显著正关联，χ²检验、A_c值和Spearman检验均显示物种间多呈不显著联结，种间关系较为松散。优势种间的Spearman秩相关系数、A_c值与生态位重叠及生态位相似系数的回归分析呈极显著正相关。因此，在该区域河谷自然植被恢复过程中，可优先选择生态位较广且适应能力强的植物进行互补种植，以恢复群落稳定性。

关键词: 雅尼湿地, 优势种, 生态位, 种间联结, 回归分析

CLC Number:

Q948
X173

NGA Wang norbu, WANG Junwei, ZENG Zhefei, LI Wei, NAO Zengcuo, TAN Xin, LA Qiong. Niche and Interspecific Association of Plant Communities in the Yani Wetland Shoals[J]. Ecology and Environmental Sciences, 2025, 34(10): 1558-1568.

阿旺罗布, 王俊伟, 曾哲飞, 李伟, 闹增措, 谭鑫, 拉琼. 西藏雅尼湿地洲滩植物群落优势种生态位及种间联结性[J]. 生态环境学报, 2025, 34(10): 1558-1568.

Figures/Tables 9

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物种编号	种名	科	属	重要值（平均值±标准差）	生态位宽度
物种编号	种名	科	属	重要值（平均值±标准差）	Levins指数	Shannon指数
1	固沙草 Orinus thoroldii	禾本科	固沙草属	22.95±16.67	14.28	2.76
2	小花水柏枝 Myricaria wardii	柽柳科	水柏枝属	20.57±13.48	10.08	2.61
3	乌柳 Salix cheilophila	杨柳科	柳属	9.52±7.30	8.87	2.51
4	细莞 Isolepis setacea	莎草科	细莞属	5.83±9.27	6.33	2.09
5	假苇拂子茅 Calamagrostis pseudophragmites	禾本科	拂子茅属	3.49±8.20	3.22	1.37
6	小灯芯草 Juncus bufonius	灯芯草科	灯芯草属	3.02±6.31	2.67	1.39
7	中印铁线莲 Clematis tibetana	毛茛科	铁线莲属	2.83±3.19	7.06	2.23
8	细叶小苦荬 Ixeridium gracile	菊科	小苦荬属	2.45±3.97	7.92	2.17
9	牛毛毡 Eleocharis yokoscensis	莎草科	荸荠属	2.43±7.10	2.29	0.93
10	三裂碱毛茛 Halerpestes tricuspis	毛茛科	碱毛茛属	2.23±4.31	2.45	1.23
11	华扁穗草 Blysmus sinocompressus	莎草科	扁穗草属	2.16±7.89	1.14	0.32
12	藏沙蒿 Artemisia wellbyi	菊科	蒿属	1.99±3.31	5.74	1.83
13	问荆 Equisetum arvense	木贼科	木贼属	1.69±2.96	4.97	1.71
14	蕨麻 Potentilla anserina	蔷薇科	蕨麻属	1.40±2.48	3.43	1.58
15	长尖莎草 Cyperus cuspidatus	莎草科	莎草属	1.13±2.14	4.64	1.68

物种编号	种名	科	属	重要值（平均值±标准差）	生态位宽度
物种编号	种名	科	属	重要值（平均值±标准差）	Levins指数	Shannon指数
1	固沙草 Orinus thoroldii	禾本科	固沙草属	22.95±16.67	14.28	2.76
2	小花水柏枝 Myricaria wardii	柽柳科	水柏枝属	20.57±13.48	10.08	2.61
3	乌柳 Salix cheilophila	杨柳科	柳属	9.52±7.30	8.87	2.51
4	细莞 Isolepis setacea	莎草科	细莞属	5.83±9.27	6.33	2.09
5	假苇拂子茅 Calamagrostis pseudophragmites	禾本科	拂子茅属	3.49±8.20	3.22	1.37
6	小灯芯草 Juncus bufonius	灯芯草科	灯芯草属	3.02±6.31	2.67	1.39
7	中印铁线莲 Clematis tibetana	毛茛科	铁线莲属	2.83±3.19	7.06	2.23
8	细叶小苦荬 Ixeridium gracile	菊科	小苦荬属	2.45±3.97	7.92	2.17
9	牛毛毡 Eleocharis yokoscensis	莎草科	荸荠属	2.43±7.10	2.29	0.93
10	三裂碱毛茛 Halerpestes tricuspis	毛茛科	碱毛茛属	2.23±4.31	2.45	1.23
11	华扁穗草 Blysmus sinocompressus	莎草科	扁穗草属	2.16±7.89	1.14	0.32
12	藏沙蒿 Artemisia wellbyi	菊科	蒿属	1.99±3.31	5.74	1.83
13	问荆 Equisetum arvense	木贼科	木贼属	1.69±2.96	4.97	1.71
14	蕨麻 Potentilla anserina	蔷薇科	蕨麻属	1.40±2.48	3.43	1.58
15	长尖莎草 Cyperus cuspidatus	莎草科	莎草属	1.13±2.14	4.64	1.68

物种编号	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1		0.50	0.32	0.45	0.06	0.06	0.62	0.34	0.07	0.08	0.03	0.57	0.19	0.31	0.26
2	0.50		0.43	0.20	0.28	0.07	0.39	0.50	0.18	0.08	0.02	0.17	0.51	0.13	0.25
3	0.37	0.48		0.42	0.15	0.68	0.34	0.59	0.28	0.25	0.08	0.30	0.32	0.24	0.49
4	0.41	0.25	0.34		0.05	0.22	0.29	0.20	0.05	0.04	0.01	0.57	0.05	0.20	0.26
5	0.11	0.26	0.20	0.08		0.06	0.10	0.37	0.08	0.01	0.01	0.02	0.14	0.05	0.35
6	0.13	0.16	0.37	0.20	0.10		0.04	0.63	0.48	0.58	0.03	0.00	0.21	0.27	0.54
7	0.52	0.38	0.39	0.33	0.18	0.12		0.11	0.11	0.02	0.01	0.43	0.15	0.11	0.11
8	0.34	0.41	0.45	0.24	0.30	0.39	0.16		0.50	0.50	0.02	0.07	0.54	0.44	0.49
9	0.03	0.11	0.22	0.08	0.10	0.35	0.09	0.32		0.88	0.03	0.00	0.69	0.50	0.21
10	0.08	0.10	0.28	0.11	0.05	0.42	0.07	0.38	0.73		0.25	0.00	0.62	0.50	0.18
11	0.05	0.07	0.08	0.03	0.04	0.05	0.04	0.07	0.05	0.21		0.00	0.52	0.06	0.01
12	0.42	0.17	0.23	0.43	0.06	0.01	0.37	0.08	0.00	0.00	0.00		0.01	0.03	0.06
13	0.16	0.37	0.24	0.05	0.16	0.27	0.15	0.44	0.47	0.44	0.27	0.01		0.35	0.15
14	0.20	0.19	0.29	0.22	0.17	0.33	0.18	0.37	0.40	0.39	0.08	0.07	0.36		0.65
15	0.22	0.28	0.37	0.26	0.31	0.34	0.15	0.41	0.22	0.23	0.03	0.08	0.12	0.47

物种编号	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1		0.50	0.32	0.45	0.06	0.06	0.62	0.34	0.07	0.08	0.03	0.57	0.19	0.31	0.26
2	0.50		0.43	0.20	0.28	0.07	0.39	0.50	0.18	0.08	0.02	0.17	0.51	0.13	0.25
3	0.37	0.48		0.42	0.15	0.68	0.34	0.59	0.28	0.25	0.08	0.30	0.32	0.24	0.49
4	0.41	0.25	0.34		0.05	0.22	0.29	0.20	0.05	0.04	0.01	0.57	0.05	0.20	0.26
5	0.11	0.26	0.20	0.08		0.06	0.10	0.37	0.08	0.01	0.01	0.02	0.14	0.05	0.35
6	0.13	0.16	0.37	0.20	0.10		0.04	0.63	0.48	0.58	0.03	0.00	0.21	0.27	0.54
7	0.52	0.38	0.39	0.33	0.18	0.12		0.11	0.11	0.02	0.01	0.43	0.15	0.11	0.11
8	0.34	0.41	0.45	0.24	0.30	0.39	0.16		0.50	0.50	0.02	0.07	0.54	0.44	0.49
9	0.03	0.11	0.22	0.08	0.10	0.35	0.09	0.32		0.88	0.03	0.00	0.69	0.50	0.21
10	0.08	0.10	0.28	0.11	0.05	0.42	0.07	0.38	0.73		0.25	0.00	0.62	0.50	0.18
11	0.05	0.07	0.08	0.03	0.04	0.05	0.04	0.07	0.05	0.21		0.00	0.52	0.06	0.01
12	0.42	0.17	0.23	0.43	0.06	0.01	0.37	0.08	0.00	0.00	0.00		0.01	0.03	0.06
13	0.16	0.37	0.24	0.05	0.16	0.27	0.15	0.44	0.47	0.44	0.27	0.01		0.35	0.15
14	0.20	0.19	0.29	0.22	0.17	0.33	0.18	0.37	0.40	0.39	0.08	0.07	0.36		0.65
15	0.22	0.28	0.37	0.26	0.31	0.34	0.15	0.41	0.22	0.23	0.03	0.08	0.12	0.47

检验方法	正联结（相关）				负联结（相关）				无联结
检验方法	极显著（p<0.01）	显著（p<0.05）	不显著（p>0.05）	总数	极显著（p<0.01）	显著（p<0.05）	不显著（p>0.05）	总数	总数（p=0）
χ²检验	0（0.00）	3（3.30）	48（52.74）	51（56.04）	0（0.00）	0（0.00）	32（35.16）	32（35.16）	8（8.80）
Spearman秩相关	7（6.67）	7（6.67）	47（44.76）	61（58.10）	1（0.95）	4（3.80）	39（37.14）	44（41.90）	0（0.00）
联结系数	12（13.18）	12（13.18）	35（38.46）	59（64.83）	5（5.49）	9（9.90）	16（17.58）	30（32.96）	2（2.19）

Niche and Interspecific Association of Plant Communities in the Yani Wetland Shoals

西藏雅尼湿地洲滩植物群落优势种生态位及种间联结性

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