敦煌北山及马鬃山地区植物群落β多样性及其解释

doi:10.13866/j.azr.2022.05.11

干旱区研究 ›› 2022, Vol. 39 ›› Issue (5): 1464-1472.doi: 10.13866/j.azr.2022.05.11 cstr: 32277.14.AZR.20220511

敦煌北山及马鬃山地区植物群落β多样性及其解释

李星^1,²(),辛智鸣^1,²,董雪^1,²,李永华^3,^4,⁵(),段瑞兵^1,²,马媛^1,²,李星^1,²,李宽⁶

1.中国林业科学研究院沙漠林业实验中心,内蒙古磴口 015200
2.内蒙古磴口荒漠生态系统国家定位观测研究站,内蒙古磴口 015200
3.中国林业科学研究院荒漠化研究所,北京 100091
4.库姆塔格荒漠生态系统国家定位观测研究站,甘肃敦煌 736200
5.敦煌荒漠生态系统国家定位观测研究站,甘肃敦煌 736200
6.内蒙古大学生态与环境学院,内蒙古呼和浩特 010000

收稿日期:2022-02-14 修回日期:2022-06-28 出版日期:2022-09-15 发布日期:2022-10-25
作者简介:李星（1994-）,男,助理工程师,主要从事植被生态学研究. E-mail: 1172303186@qq.com
基金资助:
中央级公益性科研院所基本科研业务费专项资金(CAFYBB2020ZE005);国家自然科学基金项目(32101595)

β diversity and interpretation of plant communities in Beishan and Manongshan areas of Dunhuang

LI Xing^1,²(),XIN Zhiming^1,²,DONG Xue^1,²,LI Yonghua^3,^4,⁵(),DUAN Ruibing^1,²,MA Yuan^1,²,LI Xing^1,²,LI Kuan⁶

1. Experimental Center for Desert Forestry, CAF, Dengkou 015200, Inner Mongolia, China
2. Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station, Dengkou 015200, Inner Mongolia, China
3. Institute of Desertification Studies, CAF, Beijing 100091, China
4. Kumtage Desert Ecosystem National Observation Research Station, Dunhuang 736200, Gansu, China
5. Dunhuang Desert Ecosystem National Observation Research Station, Dunhuang 736200, Gansu, China
6. College of Ecology and Environment, Inner Mongolia University, Hohhot 010000, Inner Mongolia, China

Received:2022-02-14 Revised:2022-06-28 Published:2022-09-15 Online:2022-10-25

摘要/Abstract

摘要：

β多样性反映了群落间物种组成差异。通过研究β多样性可以为区域的生物多样性保护提供科学依据。以敦煌北山及马鬃山地区为研究区域,采用系统布设样方法,共设置79个植物群落样地,探讨群落间β多样性及其组分,分析其与气候因素、土壤因素和地理距离之间的相互关系。结果表明：（1）敦煌北山及马鬃山地区的植物群落存在地理衰减格局,群落间差异较大,β多样性以更替组分为主。（2）气候、土壤和地理距离对β多样性及其更替组分有显著影响,其中气候因素影响最大,地理距离影响最小。（3）通过多元回归分析（MRM）表明,气候因素、土壤因素与地理距离对β多样性及其更替组分作用存在差异,气候和土壤因素作用远大于地理距离。综上所述,敦煌北山及马鬃山地区植物群落β多样性及其更替组分是生境过滤和扩散限制共同作用的结果,生境过滤对其影响占有较大的比重,环境的异质性是影响该地区物种差异的重要因素。

关键词: 植物群落, β多样性, 环境过滤, 扩散限制, 气候, 敦煌北山及马鬃山

Abstract:

β diversity reflects the different composition of species between communities and is prevalent topic in ecological research. Based on the community survey sites in Beishan and Manongshan areas of Dunhuang of Bray-Curtis index of 79 plants, this study analyzed the relationship between community and climatic factors, soil factors and geographical distance. The results showed a geographical decay pattern of plant communities in the Beishan and Manongshan areas of Dunhuang, and the β diversity was dominated by β_sim. The β diversity and its turnover components were significantly affected by climate, soil, and geographical distance. Multiple regression analysis (MRM) showed that climate, and soil factors and geographical distance affected β diversity and its turnover components differently, and the effects of climate and soil factors were more important than the geographical distance. These results indicated that β diversity of plant community species in the Beishan and Manongshan areas of Dunhuang resulted from habitat filtration and dispersal restriction. Species composition of communities differed greatly, and habitat filtration accounted for a large proportion of species turnover.

Key words: plant communities, β diversity, environmental filtration, diffusion restriction, climate, in Beishan and Manongshan of Dunhuang

李星,辛智鸣,董雪,李永华,段瑞兵,马媛,李星,李宽. 敦煌北山及马鬃山地区植物群落β多样性及其解释[J]. 干旱区研究, 2022, 39(5): 1464-1472.

LI Xing,XIN Zhiming,DONG Xue,LI Yonghua,DUAN Ruibing,MA Yuan,LI Xing,LI Kuan. β diversity and interpretation of plant communities in Beishan and Manongshan areas of Dunhuang[J]. Arid Zone Research, 2022, 39(5): 1464-1472.

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序号	科	属		种
序号	科	数量/个	百分比/%	数量/个	百分比/%
1	藜科（Chenopodiaceae）	12	26.70	14	24.56
2	菊科（Asteraceae）	6	13.33	12	21.05
3	禾本科（Poaceae）	6	13.33	7	12.28
4	豆科（Fabaceae）	4	8.89	4	7.02
5	蒺藜科（Zygophyllaceae）	3	6.67	4	7.02
6	百合科（Liliaceae）	1	2.22	3	5.26
7	蓼科（Polygonaceae）	2	4.44	2	3.52
8	十字花科（Brassicaceae）	2	4.44	2	3.52
9	柽柳科（Tamaricaceae）	2	4.44	2	3.52
10	夹竹桃科（Apocynaceae）	1	2.22	1	1.75
11	景天科（Crassulaceae）	1	2.22	1	1.75
12	白花丹科（Plumbaginaceae）	1	2.22	1	1.75
13	麻黄科（Ephedraceae）	1	2.22	1	1.75
14	毛茛科（Ranunculaceae）	1	2.22	1	1.75
15	蔷薇科（Rosaceae）	1	2.22	1	1.75
16	石竹科（Caryophyllaceae）	1	2.22	1	1.75

影响因素	β多样性		更替
影响因素	R²	P	R²	P
气候因素	0.27	<0.001	0.19	<0.001
土壤因素	0.13	<0.001	0.15	<0.001
地理距离	0.03	<0.001	0.01	<0.001
气候因素×土壤因素	0.32	<0.001	0.26	<0.001
气候因素×地理距离	0.17	<0.001	0.10	<0.001
土壤因素×地理距离	0.16	<0.001	0.15	<0.001
气候因素×土壤因素×地理距离	0.33	<0.001	0.26	<0.001

敦煌北山及马鬃山地区植物群落β多样性及其解释

β diversity and interpretation of plant communities in Beishan and Manongshan areas of Dunhuang

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