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Shift in nurse effect from facilitation to competition with increasing size of Salix cupularis canopy in a desertified alpine meadow on the Tibetan Plateau
Liu, Miao1,2; Wang, Yi1; Sun, Jian1; Zhang, Zhenchao1; Xu, Xingliang1; Zhou, Huakun3; Wu, Gao-lin4; Xu, Ming1; Tsunekawa, Atsushi2; Haregeweyn, Nigussie5; Tsubo, Mitsuru2
2020-12-01
Source PublicationCATENA
ISSN0341-8162
Volume195Pages:11
Corresponding AuthorSun, Jian(sunjian@igsnrr.ac.cn)
AbstractThe Tibetan Plateau is among the most ecologically important and sensitive regions worldwide, which has undergone severe desertification in recent decades, particularly in the Zoige region. In an effort to stem the progression of desertification, shrubs such as Salix cupularis have been planted in some localities in this region. However, the mechanisms whereby the interspecific relationships between these shrubs and the undergrowth vegetation change in response to an increase in shrub canopy area remain unclear. In this study, we examined the traits of plant communities and analysed soil samples under S. cupularis in a degraded alpine meadow along a gradient of four different canopy areas (1.3-1.8, 3.8-5.5, 12.6-14.5, and 27.3-28.3 m(2)). Our results revealed that plant community characteristics shifted from facilitation to competition at a canopy area of 3.8-5.5 m(2). However, changes in soil nutrients and the activities of sucrase and catalase were not detected until the canopy area of S. cupularis had reached 2.6-14.5 m(2). Furthermore, we found that microbial communities, particularly bacteria, showed trends similar to those shown by soil properties. In line with expectations, we found that the soil fungal community showed trends opposite to those shown by the bacterial community. Our findings highlight that competition rather than facilitation tends to be the predominant interspecific relationship that develops in response to the continued growth of nurse plants. Consequently, these results provide evidence in support of the stress-gradient hypothesis, which states that interspecific competition is particularly prevalent in fertile environments, particularly when there are changes in facilitation during periods of increasing environmental stress. Importantly, with respect to the shift in interspecific relationships from facilitative to competitive, we demonstrate that the response of the belowground interactions was slower than that of interactions above ground. Collectively, our observations indicate that the nurse effect of S. cupularis on ecosystems could have significant implications for the restoration of desertified grasslands.
KeywordNurse plant Facilitation Interspecific relationship Degradation Tibetan Plateau
DOI10.1016/j.catena.2020.104757
WOS KeywordSOIL MICROBIAL COMMUNITY ; PLANT-SPECIES RICHNESS ; BELOW-GROUND BIOMASS ; POSITIVE INTERACTIONS ; FUNCTIONAL TRAITS ; ENZYME-ACTIVITIES ; METAANALYSIS ; RESTORATION ; SHRUBS ; GRADIENT
Indexed BySCI
Language英语
Funding ProjectState Key Research Development Program of China[2016YFC0501802] ; State Key Research Development Program of China[2016YFC0501803] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0405] ; National Natural Science Foundation of China[41871040]
Funding OrganizationState Key Research Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research ; National Natural Science Foundation of China
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000580366300019
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/156618
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSun, Jian
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Synth Res Ctr Chinese Ecosyst Res Network, Beijing 100101, Peoples R China
2.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai, Xining 810008, Peoples R China
4.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
5.Tottori Univ, Int Platform Dryland Res & Educ, Tottori 6800001, Japan
Recommended Citation
GB/T 7714
Liu, Miao,Wang, Yi,Sun, Jian,et al. Shift in nurse effect from facilitation to competition with increasing size of Salix cupularis canopy in a desertified alpine meadow on the Tibetan Plateau[J]. CATENA,2020,195:11.
APA Liu, Miao.,Wang, Yi.,Sun, Jian.,Zhang, Zhenchao.,Xu, Xingliang.,...&Tsubo, Mitsuru.(2020).Shift in nurse effect from facilitation to competition with increasing size of Salix cupularis canopy in a desertified alpine meadow on the Tibetan Plateau.CATENA,195,11.
MLA Liu, Miao,et al."Shift in nurse effect from facilitation to competition with increasing size of Salix cupularis canopy in a desertified alpine meadow on the Tibetan Plateau".CATENA 195(2020):11.
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