Plant species-richness and association with environmental factors in the riparian zone of the Yarlung Zangbo River of Tibet, China

doi:10.3724/SP.J.1003.2014.13186

Abstract

Abstract:

Studying patterns of species richness and their causal factors remain important topics in ecology. How species composition, richness and vegetation type change along environmental gradients within the riparian zone of Yarlung Zangbo River have been relatively little studied. Here, a total of 90 plots (6 plots×15 altitudinal transects) were sampled along an altitudinal gradient within this riparian zone. A total of 238 species of vascular plants were recorded, and results of a Detrended Correspondence Analysis indicated that both altitude and longitude play important roles in determining species composition. Canonical Correspondence Analysis showed that the 90 plots could be divided into five vegetation types, and that these vegetation types were affected most by altitude and longitude. We found a slightly inverted U-shaped relationship between species richness and altitude and longitude. Species richness was positively correlated with precipitation and vegetation cover.

Key words: environmental factor, vegetation type, altitude, longitude, precipitation, vegetation cover

La Qiong, Zhaxi Ciren, Weidong Zhu, Min Xu, Yang Zhong. Plant species-richness and association with environmental factors in the riparian zone of the Yarlung Zangbo River of Tibet, China[J]. Biodiv Sci, 2014, 22(3): 337-347.

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URL: https://www.biodiversity-science.net/EN/10.3724/SP.J.1003.2014.13186

https://www.biodiversity-science.net/EN/Y2014/V22/I3/337

Figures/Tables 9

References 52

[1]	Acker SA, Gregory SV, Lienkaemper GMW, Swanson FJ, Miller SD (2003) Composition, complexity, and tree mortality in riparian forests in the central western Cascades of Oregon. Forest Ecology and Management, 173, 293-308.
[2]	Braak CJFT (1986) Canonical correspondence analysis: a new eigenvector method for multivariate direct gradient analysis.Ecology, 67, 1167-1179.
[3]	Comprehensive Scientific Expedition Team of Chinese Academy of Sciences in Qinghai-Tibet Plateau (中国科学院青藏高原综合科学考察队) (1988) Tibetan Vegetation (西藏植被). Science Press, Beijing. (in Chinese)
[4]	Connell JH (1978) Diversity in tropical rain forests and coral reefs.Science, 199, 1302-1310.
[5]	Currie DJ (1991) Energy and large-scale patterns of animal- and plant-species richness.The American Naturalist, 137, 27-49.
[6]	Fang JY (方精云), Kanza KM (神崎护), Wang XP (王襄平), Yoda K (依田恭二), Sun SZ (孙世洲), Shimota K (下田胜久) (2004) Community structure of alpine sparse vegetation and effects of microtopography in Pushila, Everest-Choyu region, Tibet, China.Biodiversity Science(生物多样性), 12, 190-199. (in Chinese with English abstract)
[7]	Gaston KJ (2000) Global patterns in biodiversity.Nature, 405, 220-227.
[8]	Gentry A (1982) Patterns of neotropical plants species diversity.Evolutionary Biology, 15, 1-84.
[9]	Godfray HCJ, Lawton JH (2001) Scale and species richness numbers.Trends in Ecology and Evolution, 16, 400-404.
[10]	Gotelli NJ, Colwell RK (2001) Quantifying biodiversity: procedures and pitfalls in the measurement and comparison of species richness.Ecology Letters, 4, 379-391.
[11]	Grace JB, Pugesek BH (1997) A structural equation model of plant species richness and its application to coastal wetland.The American Naturalist, 149, 436-460.
[12]	Grime JP (1997) The humped-back model: a response to Oksanen.Journal of Ecology, 85, 97-98.
[13]	Grytnes JA (2000) Fine-scale vascular plant species richness in different alpine vegetation types: relationships with biomass and cover.Journal of Vegetation Science, 11, 87-92.
[14]	Grytnes JA (2003) Species-richness patterns of vascular plants along seven altitudinal transects in Norway.Ecography, 26, 291-300.
[15]	Guo Q, Berry WL (1998) Species richness and biomass: dissection of the hump-shaped relationships.Ecology, 79, 2555-2559.
[16]	Halbritter AH, Alexander JM, Edwards PJ, Billeter R (2013) How comparable are species distributions along elevational and latitudinal climate gradients?Global Ecology and Biogeography, 22, 1228-1237.
[17]	He P (何萍), Guo K (郭柯), Gao JX (高吉喜), Shi PJ (史培军), Zhang YZ (张永泽), Zhuang HX (庄红翔) (2005) Vegetation types and their geographic distribution in the source area of the Yarlung Zangbo.Journal of Mountain Science(山地学报), 23, 267-273. (in Chinese with English abstract)
[18]	Hill MO, Cauch HG (1980) Detrended Correspondence Analysis: an improved ordination technique.Vegetatio, 42, 47-58.
[19]	Jiménez-Alfaro B, Marcenó C, Bueno Á, Gavilán R, Obeso JR (2014) Biogeographic deconstruction of alpine plant communities along altitudinal and topographic gradients.Journal of Vegetation Science, 25, 160-171.
[20]	Kesslere M (2002) The elevational gradient of Andean plant endemism: varying influences of taxon-specific traits and topography at different taxonomic levels.Journal of Biogeography, 29, 1159-1165.
[21]	Kraft NJ, Comita LS, Chase JM, Sanders NJ, Swenson NG, Crist TO, Myers JA (2011) Disentangling the drivers of β diversity along latitudinal and elevational gradients.Science, 333, 1755-1758.
[22]	Kratochwil A (1999)Biodiversity in Ecosystems: Principles and Case Studies of Different Complexity Levels. Kluwer Academic Publishers, Dordrecht.
[23]	Körner C (2007) The use of ‘altitude’ in ecological research.Trends in Ecology and Evolution, 22, 569-574.
[24]	Kuglerová L, Jansson R, Ågren A, Laudon H, Malm-Renöfält B (2014) Groundwater discharge creates hotspots of riparian plant species richness in a boreal forest stream network. Ecology, 95, 715-722.
[25]	La Q, Grytnes J-A, Birks HJB (2010) Alpine vegetation and species richness patterns along two altitudinal gradients in the Gyama Valley, south-central Tibet, China.Plant Ecology and Diversity, 3, 235-247.
[26]	Lepš J, Šmilauer P (2003) Multivariate Analysis of Ecological Data Using CANOCO. Cambridge University Press, Lon- don, UK.
[27]	Li HD (李海东), Shen WS (沈渭寿), Fang Y (方颖), Yan SG (燕守广), Zhang H (张慧), Zhao W (赵卫) (2011) Point pattern analysis of several psammophyte population in the riparian ecotone in the middle reaches of Yarlung Zangbo River of Tibet, China.Chinese Journal of Plant Ecology(植物生态学报), 35, 834-843. (in Chinese with English abstract)
[28]	Liu Y, Zhang YP, He DM, Cao M, Zhu H (2007) Climatic control of plant species richness along elevation gradients in the Longitudinal Range-Gorge Region. Chinese Science Bulletin, 52(Suppl.), 50-58.
[29]	Lou AR (娄安如) (1998) Ecological gradient analysis and environmental interpretation of mountain vegetation in the middle stretch of Tianshan Mountian.Acta Phytoecologica Sinica(植物生态学报), 22, 364-372. (in Chinese with English abstract)
[30]	MacArthur RH (1972) Geographical Ecology: Patterns of the Distribution of Species. Harper & Row, New York.
[31]	McCullagh P, Nelder NJ (1989) Generalised Linear Models, 2nd edn. Chapman & Hall, London.
[32]	Miyamoto Y, Nakano T, Hattori M, Nara K (2014) The mid-domain effect in ectomycorrhizal fungi: range overlap along an elevation gradient on Mount Fuji, Japan.The ISME Journal, doi: 10.1038/ismej.2014.34
[33]	Nogués-Bravo D, Araújo MB, Romdal T, Rahbek C (2008) Scale effects and human impact on the elevational species richness gradients.Nature, 453, 216-219.
[34]	O’Donnell J, Fryirs K, Leishman MR (2014) Digging deep for diversity: riparian seed bank abundance and species richness in relation to burial depth.Freshwater Biology, 59, 100-113.
[35]	Qian H, Ricklefs RE (2007) A latitudinal gradient in large-scale beta diversity for vascular plants in North America. Ecology Letters, 10, 737-744.
[36]	Rahbek C (2005) The role of spatial scale and the perception of large-scale species-richness patterns.Ecology Letters, 8, 224-239.
[37]	Rohde K (1992) Latitudinal gradients in species diversity: the search for the primary cause. Oikos, 65, 514-527.
[38]	Sabo JL, Sponseller R, Dixon M, Gade K, Harms T, Heffernan J, Welter J (2005) Riparian zones increase regional species richness by harboring different, not more, species.Ecology, 86, 56-62.
[39]	Shen WS (沈渭寿)(1997) Classification and sorting of the psammophytic vegetation in the middle Yarlung Zangbo River basin, Tibet.Journal of Desert Research(中国沙漠), 17, 169-173. (in Chinese with English abstract)
[40]	Szava-Kovats RC, Ronk A, Pärtel M (2013) Pattern without bias: local-regional richness relationship revisited.Ecology, 94, 1986-1992.
[41]	Tang ZY (唐志尧), Fang JY (方精云) (2004) A review on the elevational patterns of plant species diversity.Biodiversity Science(生物多样性), 12, 20-28. (in Chinese with English abstract)
[42]	Visser V, Clayton WD, Simpson DA, Freckleton RP, Osborne CP (2014) Mechanisms driving an unusual latitudinal diversity gradient for grasses.Global Ecology and Biogeography, 23, 61-75.
[43]	Waide RB, Willig MR, Steiner CF, Mittelbach G, Gough L, Dodson SI, Parmenter R (1999) The relationship between productivity and species richness.Annual Review of Ecology and Systematics, 30, 257-300.
[44]	Walter H (1979) Vegetation of the Earth and Ecological Systems of the Geo-biosphere. Springer, New York.
[45]	Whittaker RJ, Willis KJ, Field R (2001) Scale and species richness: towards a general, hierarchical theory of species diversity.Journal of Biogeography, 28, 453-470.
[46]	Willig MR, Kaufman DM, Stevens RD (2003) Latitudinal gradients of biodiversity: pattern, process, scale, and synthesis. Annual Review of Ecology, Evolution, and Systematics, 34, 273-309.
[47]	Wu GL (吴甘霖), Huang MY (黄敏毅), Duan RY (段仁燕), Zhao K (赵凯) (2006) Disturbing effects of tourism on species diversity in Pinus twaiwanensis communities.Acta Ecologica Sinica(生态学报), 16, 3924-3929. (in Chinese with English abstract)
[48]	Yang XL (杨小林), Zhao KT (赵垦田), Ma HP (马和平), Lu SH (禄树晖), Luo J (罗健) (2010) Ecological studies on vegetation quantity in the semi-arid valley region of Lasa.Scientia Silvae Sinicae(林业科学), 46, 15-22. (in Chinese with English abstract)
[49]	Yu SL (于顺利), Ma KP (马克平), Xu CB (徐存宝), Jin SF (金淑芳), Song XB (宋晓兵), Chen LZ (陈灵芝) (2004) The species diversity characteristics comparison of Quercus mongolica community along environmental gradient factors.Acta Ecologica Sinica(生态学报), 24, 2933-2934. (in Chinese with English abstract)
[50]	Zhang DC (张大才), Sun H (孙航) (2009) Research advances in altitudinal gradient distribution pattern of plant species richness at a broad spatial scale.Journal of Southwest Forestry University(西南林学院学报), 29(2), 74-80. (in Chinese with English abstract)
[51]	Zhang XS (张新时) (1991) Indirect gradient analysis, quantitative classification and environmental interpretation of plant communities in Ngari, Xizang (Tibet).Acta Phytoecologica et Geobotanica Sinica(植物生态学与地植物学报), 15,101-113. (in Chinese with English abstract)
[52]	Zhao WZ (赵文智) (1998) A preliminary study of the arenaceous adaptability of Sophora moorcroftiana.Acta Phytoecologica Sinica(植物生态学报), 22, 379-384. (in Chinese with English abstract)

海拔样带 Altitudinal transects	东经 E	北纬 N	海拔 Altitude (m)	样方号 Plot No.	年均降雨量 Precipitation (mm)	年均温 Temperature (℃)	行政区 County
1	83º25′	30º01′	4,593	1-6	290.8	-1.2	帕羊 Payang
2	83º58′	29º44′	4,580	6-12	290.8	-1.2	仲巴 Zhongba
3	85º17′	29º19′	4,490	13-18	400.0	4.5	萨嘎 Saga
4	87º34′	29º07′	4,010	19-24	296.8	6.6	拉孜 Lazi
5	88º15′	29º21′	3,892	25-30	350.0	6.35	通门 Tongmen
6	83º25′	30º01′	3,789	31-36	425.5	6.4	日喀则 Rikaze
7	90º23′	29º16′	3,716	37-42	325.2	6.9	尼木 Nimu
8	90º20′	29º20′	3,590	43-48	441.6	7.7	曲水 Qushui
9	90º51′	29º16′	3,620	49-54	367.5	8.6	贡嘎 Gongga
10	91º14′	29º16′	3,570	55-60	420.0	8.6	扎囊 Zhanang
11	91º36′	29º15′	3,580	61-66	379.4	8.4	乃东 Naidong
12	91º55′	29º16′	3,550	67-72	420.0	8.0	桑日 Sangri
13	92º32′	29º08′	3,230	73-78	491.6	9.1	加查 Jiacha
14	83º25′	30º01′	3,170	79-84	680.0	11.0	朗县 Langxian
15	93º02′	29º02′	2,950	84-90	686.0	8.3	米林 Milin

海拔样带 Altitudinal transects	东经 E	北纬 N	海拔 Altitude (m)	样方号 Plot No.	年均降雨量 Precipitation (mm)	年均温 Temperature (℃)	行政区 County
1	83º25′	30º01′	4,593	1-6	290.8	-1.2	帕羊 Payang
2	83º58′	29º44′	4,580	6-12	290.8	-1.2	仲巴 Zhongba
3	85º17′	29º19′	4,490	13-18	400.0	4.5	萨嘎 Saga
4	87º34′	29º07′	4,010	19-24	296.8	6.6	拉孜 Lazi
5	88º15′	29º21′	3,892	25-30	350.0	6.35	通门 Tongmen
6	83º25′	30º01′	3,789	31-36	425.5	6.4	日喀则 Rikaze
7	90º23′	29º16′	3,716	37-42	325.2	6.9	尼木 Nimu
8	90º20′	29º20′	3,590	43-48	441.6	7.7	曲水 Qushui
9	90º51′	29º16′	3,620	49-54	367.5	8.6	贡嘎 Gongga
10	91º14′	29º16′	3,570	55-60	420.0	8.6	扎囊 Zhanang
11	91º36′	29º15′	3,580	61-66	379.4	8.4	乃东 Naidong
12	91º55′	29º16′	3,550	67-72	420.0	8.0	桑日 Sangri
13	92º32′	29º08′	3,230	73-78	491.6	9.1	加查 Jiacha
14	83º25′	30º01′	3,170	79-84	680.0	11.0	朗县 Langxian
15	93º02′	29º02′	2,950	84-90	686.0	8.3	米林 Milin

	排序轴 Axes				合计 Total
	1	2	3	4	合计 Total
特征值总和 Eigenvalues	0.65	0.47	0.31	0.22
梯度长度 Length of gradient	5.95	5.96	3.26	2.61
物种与环境相关关系 Species-environment correlation	0.94	0.54	0.62	2.61
物种数据累计变异百分率 Cumulative percentage variance of species data	8.00	13.70	17.60	20.30
物种与环境关系累计变异百分率 Cumulative percentage variance of species- environment relationship	37.5	65.00	79.90	92.40
特征值总和 Sum of all eigenvalues					8.13
典范特征值总和 Sum of all canonical eigenvalues					1.72

	排序轴 Axes				合计 Total
	1	2	3	4	合计 Total
特征值总和 Eigenvalues	0.65	0.47	0.31	0.22
梯度长度 Length of gradient	5.95	5.96	3.26	2.61
物种与环境相关关系 Species-environment correlation	0.94	0.54	0.62	2.61
物种数据累计变异百分率 Cumulative percentage variance of species data	8.00	13.70	17.60	20.30
物种与环境关系累计变异百分率 Cumulative percentage variance of species- environment relationship	37.5	65.00	79.90	92.40
特征值总和 Sum of all eigenvalues					8.13
典范特征值总和 Sum of all canonical eigenvalues					1.72

		排序轴	Axes
	1	2	3	4	合计 Total
特征值总和 Eigenvalues	0.60	0.44	0.23	0.16	8.132
物种与环境相关系 Species-environment correlation	0.97	0.90	0.88	0.82
物种数据累计变异百分率 Cumulative percentage variance of species data	7.30	12.70	15.60	18.00
物种与环境关系累计变异百分率 Cumulative percentage variance of species-environment relationship	43.4	72.3	88.3	100
海拔 Altitude	0.94	-0.27	-0.08	-0.04
年均降雨量 Annual average precipitation	-0.54	0.51	0.61	0.24
年均温度 Annual average temperature	-0.92	-0.18	0.18	0.29
经度 Longitude	-0.94	-0.20	0.24	0.02
植被盖度 Vegetation cover	-0.01	0.70	-0.23	0.49