Changes of Plant Community Composition and Niche Characteristics during Desertification Process in An Alpine Steppe

doi:10.16258/j.cnki.1674-5906.2021.08.002

Ecology and Environment ›› 2021, Vol. 30 ›› Issue (8): 1561-1570.DOI: 10.16258/j.cnki.1674-5906.2021.08.002

Special Issue: 生物多样性专题汇编

• Research Articles • Previous Articles Next Articles

Changes of Plant Community Composition and Niche Characteristics during Desertification Process in An Alpine Steppe

ZONG Ning¹(), SHI Peili¹^,², ZHU Juntao¹^,^*()

1. Lhasa National Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2021-04-07 Online:2021-08-18 Published:2021-11-03
Contact: ZHU Juntao

高寒草地沙化过程植物群落构成及生态位特征变化

宗宁¹(), 石培礼¹^,², 朱军涛¹^,^*()

1.中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室拉萨高原生态试验站,北京 100101
2.中国科学院大学资源与环境学院,北京 100049

通讯作者: 朱军涛
作者简介:宗宁（1987年生）,男,副研究员,博士,主要从事高原生态学研究。E-mail: zongning@igsnrr.ac.cn
基金资助:
国家自然科学基金项目(42071066);国家自然科学基金项目(31870406);国家自然科学基金项目(42077422);国家重点研发计划项目(2017YFA0604802);第二次青藏高原综合科学考察研究项目(2019QZKK0302);中国科学院战略性先导科技专项项目(XDA20050102)

Abstract

Abstract:

Grassland desertification has become an urgent environmental issue, which negatively affects forage production and environmental conditions for residents living in grassland areas. Current researches on desertified grassland have been mainly focused on changes in vegetation and soil properties, while the changed relationships among species caused by desertification have been rarely investigated. Based on the classic niche theory, this study used space as a surrogate of time series to assess the changed characteristics of plant communities along the desertification gradient in alpine grasslands. The species composition, niche width, and niche overlap (O) were analyzed along the desertification gradients, as well as the resource utilization and ecological adaptability of plant populations. The research findings can provide scientific guidelines for revealing the mechanism maintaining plant diversity in alpine grasslands and for restoring desertified grassland vegetation of the Qinghai-Tibet Plateau. Along the desertification gradient, community coverage and aboveground biomass showed gradually decreasing trends. However, the highest species richness, Simpson index, and Shannon-Wiener index appeared in the light desertification gradient end, and then showed significant decreasing trends. The Pielou index did not differ significantly among the desertification gradients. The importance value showed that significant differences occurred in community structure among the desertification gradients. Correlation analysis found that species niche width along the desertification gradient displayed a saturation curve with the importance values. Along the increasing desertification, the number of plant population with high niche overlap (>0.9) and partial overlap (0.5<O≤0.9) gradually decreased, while the number of moderate overlap (≤0.5) did not change. This means that the decrease in species number caused by desertification can reduce the competition for resource utilization among plant species. Accompanied by weakened soil nutrients, resources utilization among plant populations is diversified in order to reduce competition for limited resources.

Key words: alpine grassland, desertification gradient, biodiversity, importance value, niche overlap

摘要：

草地沙化是目前面临的重要环境问题,会对草原地区牧草生产与居民生活环境产生影响。目前对沙化草地的研究主要集中在植被与土壤性质的变化,对物种之间关系的变化并未进行深入探究。基于经典的生态位理论,利用空间代替时间序列的方法,通过调查高寒草地沿沙化梯度的植物群落变化特征,分析沙化演替过程中高寒草原植物群落构成、生态位宽度以及生态位重叠（O）的变化,探索沙化过程植物种群的资源利用状况及生态适应能力,以期为青藏高原高寒草原植物多样性维持机制与沙化草地植被恢复提供参考依据。结果发现,随着沙化程度的加重,群落盖度和地上生物量呈现逐渐降低的趋势。不同的是,物种丰富度、辛普森指数和香农-维纳指数的最大值出现在轻度沙化梯度,而后呈显著降低趋势（P<0.001）,但Pielou指数在各沙化梯度间差异不显著（P=0.634）。通过计算重要值发现,沙化梯度之间群落结构变异较大。相关性分析发现,沙化过程物种生态位宽度与重要值呈饱和曲线关系。随着沙化程度的加重,生态位高度重叠（>0.9）和部分重叠（0.5<O≤0.9）的植物种对数逐渐降低,而中度重叠以下（≤0.5）的植物种对数则变化不大,这说明沙化程度加深导致的物种数减少会降低种群间资源利用的竞争。沙化程度的加重伴随土壤养分的减少,为降低对有限资源的竞争,植物种群间的资源利用呈现多样化。

关键词: 高寒草地, 沙化梯度, 多样性, 重要值, 生态位重叠

CLC Number:

Q948
X173

ZONG Ning, SHI Peili, ZHU Juntao. Changes of Plant Community Composition and Niche Characteristics during Desertification Process in An Alpine Steppe[J]. Ecology and Environment, 2021, 30(8): 1561-1570.

宗宁, 石培礼, 朱军涛. 高寒草地沙化过程植物群落构成及生态位特征变化[J]. 生态环境学报, 2021, 30(8): 1561-1570.

Figures/Tables 10

References 36

[1]	BUCKLEY R, 1987. The effect of sparse vegetation on the transport of dune sand by wind[J]. Nature, 325(6103): 426-428. DOI URL
[2]	CHESSON P, 2000. Mechanisms of maintenance of species diversity[J]. Annual Review of Ecology and Systematics, 31: 343-366. DOI URL
[3]	DONG J, CUI X, WANG S, et al., 2016. Changes in biomass and quality of alpine steppe in response to N & P fertilization in the Tibetan Plateau[J]. Plos One, 11(5): e0156146. DOI URL
[4]	DREGNE H E, 1994. Land degradation in the worlds arid zones[C]// In Soil and water science: Key to understanding our global environment, Symposium on Soil and Water Science-Key to Understanding Our Global Environment. Cincinnati, OH: SOIL SCI SOC AMER: 53-58.
[5]	GRINNELL J, 1917. Field tests of theories concerning distributional control[J]. American Naturalist, 51: 115-128. DOI URL
[6]	LEVINS R, 1968. Evolution in Changing Environments - Some Theoretical Explorations[M]. Princeton: Princeton University Press.
[7]	MA L, WANG Q, SHEN S T, et al., 2020. Heterogeneity of soil structure and fertility during desertification of alpine grassland in northwest Sichuan[J]. Ecosphere, DOI: 10.1002/ecs2.3161. DOI
[8]	PENG F, XUE X, YOU Q G, et al., 2020. Change in the trade-off between aboveground and belowground biomass of alpine grassland: Implications for the land degradation process[J]. Land Degradation and Development, 31(1): 105-117. DOI URL
[9]	ZONG N, SHI P, 2020. Soil properties rather than plant production strongly impact soil bacterial community diversity along a desertification gradient on the Tibetan Plateau[J]. Grassland Science, 66(4): 197-206. DOI URL
[10]	陈林, 辛佳宁, 苏莹, 等, 2019. 异质生境对荒漠草原植物群落组成和种群生态位的影响[J]. 生态学报, 39(17): 6187-6205.
	CHEN L, XIN J N, SU Y, et al., 2019. Effects of heterogeneous habitats on community composition and niche characteristics of different plant populations in the desert steppe of China[J]. Acta Ecologica Sinica, 39(17): 6187-6205.
[11]	陈文业, 张瑾, 戚登臣, 等, 2013. 黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析[J]. 草业学报, 22(2): 11-21.
	CHEN W Y, ZHANG J, QI D C, et al., 2013. Desertification dynamic change trend and quantitative analysis of driving factors of alpine meadow in Maqu County in the first meander of the Yellow River[J]. Acta Prataculturae Sinica, 22(2): 11-21.
[12]	程中秋, 张克斌, 常进, 等, 2010. 宁夏盐池不同封育措施下的植物生态位研究[J]. 生态环境学报, 19(7): 1537-1542.
	CHENG Z Q, ZHANG K B, CHANG J, et al., 2010. Vegetable niche of different enclosure measures in Yanchi county, Ningxia[J]. Ecology and Environmental Sciences, 19(7): 1537-1542.
[13]	段敏杰, 高清竹, 万运帆, 等, 2010. 放牧对藏北紫花针茅高寒草原植物群落特征的影响[J]. 生态学报, 30(14): 3892-3900.
	DUAN M J, GAO Q Z, WAN Y F, et al., 2010. Effect of grazing on community characteristics and species diversity of Stipa purpurea alpine grassland in Northern Tibet[J]. Acta Ecologica Sinica, 30(14): 3892-3900.
[14]	国家林业局, 2015. 第五次中国荒漠化和沙化状况公报[R/OL].(2015.12.29) [2021-8-20]. http://www.forestry.gov.cn/main/58/content-832363.html.
	National Forestry Administration, 2015. The 5th China Desertification and Desertification Communiqué[R/OL].(2015.12.29) [2021-8-20]. http://www.forestry.gov.cn/main/58/content-832363.html.
[15]	韩光中, 屈建军, 俎瑞平, 2014. 安多县沙漠化过程中土壤理化性质的演变特征[J]. 土壤通报, 45(5): 1032-1037.
	HAN G Z, QU J J, ZU R P, 2014. Evolution characteristics of soil properties during desertification progress in Amdo County[J]. Chinese Journal of Soil Science, 45(5): 1032-1037.
[16]	何芳兰, 金红喜, 王锁民, 等, 2016. 沙化对玛曲高寒草甸土壤微生物数量及土壤酶活性的影响[J]. 生态学报, 36(18): 5876-5883.
	HE F L, JIN H X, WANG S M, et al., 2016. Effect of desertification on soil microbial biomass and enzyme activities in Maqu alpine meadow[J]. Acta Ecologica Sinica, 36(18): 5876-5883.
[17]	金红喜, 何芳兰, 李昌龙, 等, 2015. 玛曲沙化高寒草甸植被、土壤理化性质及土壤微生物数量研究[J]. 草业学报, 24(11): 20-28.
	JIN H X, HE F L, LI C L, et al., 2015. Vegetation characteristics, abundance of soil microbes, and soil physico-chemical properties in desertified alpine meadows of Maqu[J]. Acta Prataculturae Sinica, 24(11): 20-28.
[18]	李昌龙, 徐先英, 金红喜, 等, 2014. 玛曲高寒草甸沙化过程中群落结构与植物多样性[J]. 生态学报, 34(14): 3953-3961.
	LI C L, XU X Y, JIN H X, et al., 2014. Community structures and plant diversities in the desertification process of Maqu Alpine Meadow in Gansu[J]. Acta Ecologica Sinica, 34(14): 3953-3961.
[19]	李军玲, 张金屯, 2006. 太行山中段植物群落优势种生态位研究[J]. 植物研究, 26(2): 2156-2162.
	LI J L, ZHANG J T, 2006. Niche of dominant species in the Midst of Taihang Mountain[J]. Bulletin of Botanical Research, 26(2): 156-162.
[20]	李森, 杨萍, 高尚玉, 等, 2004. 近10年西藏高原土地沙漠化动态变化与发展态势[J]. 地球科学进展, 19(1): 63-70.
	LI S, YANG P, GAO S Y, et al., 2004. Dynamic changes and developmental trends of the land desertification in Tibetan Plateau over the past 10 years[J]. Advance in Earth Sciences, 19(1): 63-70.
[21]	李中林, 秦卫华, 周守标, 等, 2014. 围栏封育下华北半干旱草原植物生态位研究[J]. 草地学报, 22(6): 1186-1193.
	LI Z L, QIN W H, ZHOU S B, et al., 2014. Study on plant niche under fencing measures in the semi-arid grassland of North China[J]. Acta Agrestia Sinica, 22(6): 1186-1193.
[22]	聂莹莹, 徐丽君, 辛晓平, 等, 2020. 围栏封育对温性草甸草原植物群落构成及生态位特征的影响[J]. 草业学报, 29(11): 11-22.
	NIE Y Y, XU L J, XIN X P, et al., 2020. Effects of fence enclosure on the plant community composition and niche characteristics in a temperate meadow steppe[J]. Acta Prataculturae Sinica, 29(11): 11-22.
[23]	牛翠娟, 娄安如, 孙儒泳, 2015. 基础生态学[M]. 第3版. 北京: 高等教育出版社.
	NIU C J, LOU A R, SUN R Y, 2015. Foundations in Ecology[M]. Beijing: 3 rd Edition. Higher Education Press.
[24]	牛叔文, 马利邦, 曾明明, 2008. 过牧对玛曲草地沙化的影响[J]. 生态学报, 28(1): 145-153.
	NIU S W, MA L B, ZENG M M, 2008. Effect of overgrazing on grassland desertification in Maqu County[J]. Acta Ecologica Sinica, 28(1): 145-153.
[25]	彭文俊, 王晓鸣, 2016. 生态位概念和内涵的发展及其在生态学中的定位[J]. 应用生态学报, 27(1): 327-334.
	PENG W J, WANG X M, 2016, Concept and connotation development of niche and its ecological orientation[J]. The Journal of Applied Ecology, 27(1): 327-334.
[26]	戚登臣, 陈文业, 刘振恒, 等, 2011. 黄河首曲-玛曲县高寒草甸沙化演替进程中群落结构及种群生态位特征[J]. 西北植物学报, 31(12): 2522-2531.
	QI D C, CHEN W Y, LIU Z H, et al., 2011. Population structure and niche dynamics characteristics of plants communities in the sandy succession of Maqu alpine meadow in first meander of Yellow River[J]. Acta Botanica Boreali-Occidentalia Sinica, 31(12): 2522-2531.
[27]	舒向阳, 胡玉福, 蒋双龙, 等, 2016. 川西北沙化草地植被群落、土壤有机碳及微生物特征[J]. 草业学报, 25(4): 45-54.
	SHU X Y, HU Y F, JIANG S L, et al., 2016. Plant community characteristics, soil organic carbon and soil biological properties of grassland desertification sites in Northwest Sichuan[J]. Acta Prataculturae Sinica, 25(4): 45-54.
[28]	孙鸿烈, 郑度, 姚檀栋, 等, 2012. 青藏高原国家生态安全屏障保护与建设[J]. 地理学报, 67(1): 3-12. DOI
	SUN H L, ZHENG D, YAO T D, et al., 2012. Protection and construction of the national ecological security shelter zone on Tibetan Plateau[J]. Acta Geographica Sinica, 67(1): 3-12.
[29]	王兮之, 李森, 何巧如, 等, 2009. 西藏沙漠化土地退化程度动态分析及其评价[J]. 中国水土保持 (7): 25-28.
	WANG X Z, LI S, HE Q R, et al., 2009. Dynamic analysis and evaluation of the degree of desertification land in Tibet[J]. Soil and Water Conservation In China (7): 25-28.
[30]	魏兴琥, 李森, 杨萍, 等, 2007. 藏北高山嵩草草甸植被和多样性在沙漠化过程中的变化[J]. 中国沙漠, 27(5): 750-757.
	WEI X H, LI S, YANG P, et al., 2007. Changes of vegetation and diversity of alpine Kobresia (Kobresia pygmaea) steppe meadow in desertification process in Northern Tibet Plateau[J]. Journal of Desert Research, 27(5): 750-757.
[31]	魏兴琥, 杨萍, 李森, 等, 2005. 西藏沙漠化典型分布区沙漠化过程中的生物生产力和物种多样性变化[J]. 中国沙漠, 25(5): 663-667.
	WEI X H, YANG P, LI S, et al., 2005. Changes of bio-productivity and species diversity in process of desertification in typical desertified land, Tibet[J]. Journal of Desert Research, 25(5): 663-667.
[32]	郑度, 赵东升, 2017. 青藏高原的自然环境特征[J]. 科技导报, 35(6): 13-22.
	ZHENG D, ZHAO D S, 2017. Characteristics of natural environment of the Tibetan Plateau[J]. Science and Technology Review, 35(6): 13-22. DOI URL
[33]	朱灵, 李易, 杨婉秋, 等, 2021. 沙化对高寒草地土壤碳、氮、酶活性及细菌多样性的影响[J]. 水土保持学报, 35(3): 350-358.
	ZHU L, LI Y, YANG W Q, et al., 2021. Effect of desertification on soil carbon and nitrogen,enzyme activity and bacterial diversity in alpine grassland[J]. Journal of Soil and Water Conservation, 35(3): 350-358.
[34]	字洪标, 阿的鲁骥, 刘敏, 等, 2016. 高寒草甸不同类型草地群落特征及优势种植物生态位差异[J]. 应用与环境生物学报, 22(4): 546-554.
	ZI H B, ADE L J, LIU M, et al., 2016. Difference of community characteristics and niche of dominant species in different grassland types of alpine meadow[J]. Chinese Journal of Applied and Environmental Biology, 22(4): 546-554.
[35]	宗宁, 石培礼, 牛犇, 等, 2014. 氮磷配施对藏北退化高寒草甸群落结构和生产力的影响[J]. 应用生态学报, 25(12): 3458-3468.
	ZONG N, SHI P L, NIU B, et al., 2014. Effects of nitrogen and phosphorous fertilization on community structure and productivity of degraded alpine meadows in northern Tibet, China[J]. The Journal of Applied Ecology, 25(12): 3458-3468.
[36]	宗宁, 石培礼, 孙建, 2020. 高寒草地沙化过程植被与土壤特征变化的生态阈值估算[J]. 干旱区研究, 37(6): 1580-1589.
	ZONG N, SHI P L, SUN J, 2020. Estimation of ecological thresholds in plant and soil properties during desertification in an alpine grassland[J]. Arid Zone Research, 37(6): 1580-1589.

沙化梯度Desertification gradient	潜在沙化 Potential desertification	轻度沙化 Light desertification	中度沙化 Moderate desertification	重度沙化 Heavy desertification	极重度沙化 Severely heavy desertification
植被覆盖度 Vegetation cover	>50%	>30%	10%‒30%	5%‒10%	<5%
裸地面积 Proportion of bare land	<10%	<20%	20%‒30%	30%‒50%	>50%
优势物种 Dominant species	紫花针茅 (Stipa purpurea)、多裂委陵菜 (Potentilla multifida)、微孔草 (Microula sikkimensis)	窄叶苔草 (Carex montis-everestii)、多裂委陵菜、羊茅 (Festuca ovina)	紫花针茅、多裂委陵菜、冷地早熟禾 (Poa crymophila)	紫花针茅、纤杆蒿(Artemisia demissa)、窄叶苔草	微孔草、平卧轴藜(Axyris prostrata)

沙化梯度Desertification gradient	潜在沙化 Potential desertification	轻度沙化 Light desertification	中度沙化 Moderate desertification	重度沙化 Heavy desertification	极重度沙化 Severely heavy desertification
植被覆盖度 Vegetation cover	>50%	>30%	10%‒30%	5%‒10%	<5%
裸地面积 Proportion of bare land	<10%	<20%	20%‒30%	30%‒50%	>50%
优势物种 Dominant species	紫花针茅 (Stipa purpurea)、多裂委陵菜 (Potentilla multifida)、微孔草 (Microula sikkimensis)	窄叶苔草 (Carex montis-everestii)、多裂委陵菜、羊茅 (Festuca ovina)	紫花针茅、多裂委陵菜、冷地早熟禾 (Poa crymophila)	紫花针茅、纤杆蒿(Artemisia demissa)、窄叶苔草	微孔草、平卧轴藜(Axyris prostrata)

科 Family	序号 No.	植物种 Plant species	重要值 Importance value
科 Family	序号 No.	植物种 Plant species	潜在沙化Potential desertification	轻度沙化Light desertification	中度沙化Moderate desertification	重度沙化Heavy desertification	极重度沙化Severely heavy desertification
禾本科 Gramineae	S1	紫花针茅 Stipa purpurea	25.45	1.40	51.92	37.51	1.31
	S2	冷地早熟禾 Poa crymophila	7.44	4.36	10.90	2.22	‒
	S3	羊茅 Festuca ovina	6.73	12.47	‒	‒	‒
	S4	穗三毛 Trisetum spicatum	5.32	‒	‒	3.80	‒
莎草科 Cyperaceae	S5	窄叶苔草 Carex montis-everestii	4.95	25.22	2.49	13.52	‒
豆科 Leguminosae	S6	丛生黄耆 Astragalus confertus	1.85	3.35	‒	6.56	‒
蔷薇科 Rosaceae	S7	多裂委陵菜 Potentilla multifida	22.96	24.15	‒	‒	‒
蔷薇科 Rosaceae	S8	二裂委陵菜 Potentilla bifurca	4.82	5.04	13.67	‒	‒
菊科 Asteraceae	S9	青藏狗娃花 Heteropappus bowerii	0.54	‒	10.45	4.49	‒
	S10	纤杆蒿 Artemisia demissa	0.98	3.05	7.32	26.78	‒
	S11	弱小火绒草 Leontopodium pusillum	1.07	1.85	‒	0.64	‒
龙胆科 Gentianaceae	S12	线叶龙胆 Gentiana farreri	2.79	10.49	‒	‒	‒
紫草科 Boraginaceae	S13	微孔草 Microula sikkimensis	12.88	4.38	2.96	4.47	54.24
景天科 Crassulaceae	S14	藏布红景天 Rhodiola sangpo-tibetana	1.19	3.65	0.31	‒	‒
石竹科 Caryophyllaceae	S15	高山雪灵芝 Arenaria kansuensis	‒	0.40	‒	‒	‒
伞形科 Umbelliferae	S16	棱子芹 Pleurospermum camtschaticum	‒	‒	‒	‒	‒
藜科 Chenopodiaceae	S17	平卧轴藜 Axyris prostrata	1.05	‒	‒	‒	44.45

科 Family	序号 No.	植物种 Plant species	重要值 Importance value
科 Family	序号 No.	植物种 Plant species	潜在沙化Potential desertification	轻度沙化Light desertification	中度沙化Moderate desertification	重度沙化Heavy desertification	极重度沙化Severely heavy desertification
禾本科 Gramineae	S1	紫花针茅 Stipa purpurea	25.45	1.40	51.92	37.51	1.31
	S2	冷地早熟禾 Poa crymophila	7.44	4.36	10.90	2.22	‒
	S3	羊茅 Festuca ovina	6.73	12.47	‒	‒	‒
	S4	穗三毛 Trisetum spicatum	5.32	‒	‒	3.80	‒
莎草科 Cyperaceae	S5	窄叶苔草 Carex montis-everestii	4.95	25.22	2.49	13.52	‒
豆科 Leguminosae	S6	丛生黄耆 Astragalus confertus	1.85	3.35	‒	6.56	‒
蔷薇科 Rosaceae	S7	多裂委陵菜 Potentilla multifida	22.96	24.15	‒	‒	‒
蔷薇科 Rosaceae	S8	二裂委陵菜 Potentilla bifurca	4.82	5.04	13.67	‒	‒
菊科 Asteraceae	S9	青藏狗娃花 Heteropappus bowerii	0.54	‒	10.45	4.49	‒
	S10	纤杆蒿 Artemisia demissa	0.98	3.05	7.32	26.78	‒
	S11	弱小火绒草 Leontopodium pusillum	1.07	1.85	‒	0.64	‒
龙胆科 Gentianaceae	S12	线叶龙胆 Gentiana farreri	2.79	10.49	‒	‒	‒
紫草科 Boraginaceae	S13	微孔草 Microula sikkimensis	12.88	4.38	2.96	4.47	54.24
景天科 Crassulaceae	S14	藏布红景天 Rhodiola sangpo-tibetana	1.19	3.65	0.31	‒	‒
石竹科 Caryophyllaceae	S15	高山雪灵芝 Arenaria kansuensis	‒	0.40	‒	‒	‒
伞形科 Umbelliferae	S16	棱子芹 Pleurospermum camtschaticum	‒	‒	‒	‒	‒
藜科 Chenopodiaceae	S17	平卧轴藜 Axyris prostrata	1.05	‒	‒	‒	44.45

科 Family	序号 No.	植物种 Plant species	生态位Niche breadth
科 Family	序号 No.	植物种 Plant species	潜在沙化Potential desertification	轻度沙化 Light desertification	中度沙化Moderate desertification	重度沙化 Heavy desertification	极重度沙化Severely heavy desertification
禾本科 Gramineae	S1	紫花针茅 Stipa purpurea	0.898	0.398	0.975	0.963	0.200
	S2	冷地早熟禾 Poa crymophila	0.695	0.713	0.947	0.358	‒
	S3	羊茅 Festuca ovina	0.567	0.799	‒	‒	‒
	S4	穗三毛 Trisetum spicatum	0.394	‒	‒	0.394	‒
莎草科 Cyperaceae	S5	窄叶苔草 Carex montis-everestii	0.552	0.938	0.584	0.785	‒
豆科 Leguminosae	S6	丛生黄耆 Astragalus confertus	0.336	0.384	‒	0.226	‒
蔷薇科 Rosaceae	S7	多裂委陵菜 Potentilla multifida	0.851	0.924	‒	‒	‒
蔷薇科 Rosaceae	S8	二裂委陵菜 Potentilla bifurca	0.295	0.595	0.623	‒	‒
菊科 Asteraceae	S9	青藏狗娃花 Heteropappus bowerii	0.200	‒	0.790	0.384	‒
	S10	纤杆蒿 Artemisia demissa	0.400	0.763	0.700	0.780	‒
	S11	弱小火绒草 Leontopodium pusillum	0.309	0.270	‒	0.200	‒
龙胆科 Gentianaceae	S12	线叶龙胆 Gentiana farreri	0.458	0.837	‒	‒	‒
紫草科 Boraginaceae	S13	微孔草 Microula sikkimensis	0.638	0.506	0.375	0.526	0.971
景天科 Crassulaceae	S14	藏布红景天 Rhodiola sangpo-tibetana	0.506	0.779	0.200	‒	‒
石竹科 Caryophyllaceae	S15	高山雪灵芝 Arenaria kansuensis	‒	0.400	‒	‒	‒
伞形科 Umbelliferae	S16	棱子芹 Pleurospermum camtschaticum	‒	‒	‒	‒	‒
藜科 Chenopodiaceae	S17	平卧轴藜 Axyris prostrata	‒	‒	‒	‒	0.950

Changes of Plant Community Composition and Niche Characteristics during Desertification Process in An Alpine Steppe

高寒草地沙化过程植物群落构成及生态位特征变化

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植物种 Plant species	S1	S2	S3	S4	S5	S6	S7	S8	S9	S10	S11	S12	S13	S14
S1	‒	0.685	0.660	0.718	0.530	0.609	0.811	0.410	0.657	0.607	0.660	0.818	0.669	0.517
S2	0.542	‒	0.838	0.206	0.875	0.454	0.973	0.222	0.174	0.623	0.625	0.430	0.698	0.655
S3	0.748	0.913	‒	0	0.590	0.791	0.895	0.147	0	0.761	0.371	0.922	0.250	0.961
S4	‒	‒	‒	‒	0.250	0	0.120	0.610	0	0	0	0	0.426	0
S5	0.488	0.795	0.778	‒	‒	0.285	0.820	0.459	0	0.566	0.747	0.400	0.445	0.460
S6	0.045	0.221	0.303	‒	0.714	‒	0.590	0.096	0	0.906	0.351	0.964	0.142	0.926
S7	0.597	0.684	0.757	‒	0.968	0.743	‒	0.315	0.251	0.689	0.603	0.739	0.541	0.798
S8	0.406	0.983	0.854	‒	0.741	0.455	0.595	‒	0	0.071	0	0.126	0.721	0.135
S9	‒	‒	‒	‒	‒	‒	‒	‒	‒	0	0.285	0	0.674	0
S10	0.301	0.816	0.670	‒	0.951	0.774	0.852	0.799	‒	‒	0.696	0.872	0.140	0.848
S11	0.641	0.335	0.647	‒	0.312	0.161	0.445	0.221	‒	0.065	‒	0.336	0.266	0.344
S12	0.705	0.803	0.869	‒	0.825	0.454	0.846	0.694	‒	0.726	0.856	‒	0.196	0.992
S13	0.456	0.471	0.730	‒	0.592	0.675	0.658	0.421	‒	0.372	0.811	0.623	‒	0.216
S14	0.511	0.723	0.666	‒	0.906	0.585	0.894	0.631	‒	0.889	0.581	0.370	0.682	‒

植物种 Plant species	S1	S2	S4	S5	S6	S8	S9	S10	S11	S13	S14
S1	‒	0.967	‒	0.709	‒	0.686	0.940	0.746	‒	0.666	0.503
S2	0.476	‒	‒	0.670	‒	0.710	0.884	0.767	‒	0.700	0.466
S4	0.642	0.271	‒	‒	‒	‒	‒	‒	‒	‒	‒
S5	0.806	0.604	0.654	‒	‒	0.854	0.450	0.901	‒	0.005	0.577
S6	0.384	0.898	0	0.433	‒	‒	‒	‒	‒	‒	‒
S8	‒	‒	‒	‒	‒	‒	0.449	0.988	‒	0.158	0.163
S9	0.519	0.497	0	0.748	0.552	‒	‒	0.511	‒	0.786	0.420
S10	0.910	0.237	0.627	0.720	0.039	‒	0	‒	‒	0.170	0.309
S11	0.370	0.440	0.616	0.488	0	‒	0	0.539	‒	‒	‒
S13	0.772	0.534	0.212	0.379	0.643	‒	0.136	0	0.432	‒	0.226
S14	‒	‒	‒	‒	‒	‒	‒	‒	‒	‒	‒

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