Divergent Coupling Mechanism of Precipitation on Plant Community Multifunction Across Alpine Grassland on the Tibetan Plateau

Overview

Journal Front Plant Sci

Date 2023 Feb 6

PMID 36743555

Authors

Miao Liu

Yang Li

Le Sun

Ziyin Du

Wencheng Li

Lin Zhang

Jinniu Wang

Ji Chen

Affiliations

Soon will be listed here.

Abstract

Introduction: It is essential to understand plant adaptive strategies on plant stoichiometric traits at the species level rather than at the community level under various environmental conditions across the Tibetan Plateau (TP).

Methods: Here, plant community function and edaphic and meteorological factors were collected at 111 sites along an extensive water-heat gradient during the peak growing season in 2015. Community-weighted mean trait (CWM) was introduced to illuminating dynamics of the functional trait at the community level.

Results: Our results indicated that plant functional traits, including CWM-leaf total carbon (CWM_LTC), CWM-leaf total nitrogen (CWM_LTN), and CWM-leaf total phosphorus (CWM_LTP), showed similar and comparatively marked increases from alpine meadow (AM) to alpine steppe (AS). Moreover, since the tightly coordinated variation among each plant functional trait of AM was higher than that of AS, a more stable coupling mechanism of these plant functional traits could be observed in AM under a long-term evolutionary habit. Specifically, there was higher annual mean precipitation (AMP) in AM than that in AS significantly ( < 0.01), and AMP was significantly correlated with soil moisture and soil total phosphorus in AM. Generally, our findings suggest that precipitation determines divergent coupling plant community function in both AS and AM.

References

Kremen C . Managing ecosystem services: what do we need to know about their ecology?. Ecol Lett. 2011; 8(5):468-79. DOI: 10.1111/j.1461-0248.2005.00751.x. View

Reich P, Oleksyn J . Global patterns of plant leaf N and P in relation to temperature and latitude. Proc Natl Acad Sci U S A. 2004; 101(30):11001-6. PMC: 503733. DOI: 10.1073/pnas.0403588101. View

Geng Y, Ma W, Wang L, Baumann F, Kuhn P, Scholten T . Linking above- and belowground traits to soil and climate variables: an integrated database on China's grassland species. Ecology. 2017; 98(5):1471. DOI: 10.1002/ecy.1780. View

Han W, Fang J, Reich P, Woodward F, Wang Z . Biogeography and variability of eleven mineral elements in plant leaves across gradients of climate, soil and plant functional type in China. Ecol Lett. 2011; 14(8):788-96. DOI: 10.1111/j.1461-0248.2011.01641.x. View

Le Bagousse-Pinguet Y, Gross N, Maestre F, Maire V, de Bello F, Fonseca C . Testing the environmental filtering concept in global drylands. J Ecol. 2017; 105(4):1058-1069. PMC: 5476209. DOI: 10.1111/1365-2745.12735. View

Wright I, Reich P, Cornelissen J, Falster D, Garnier E, Hikosaka K . Assessing the generality of global leaf trait relationships. New Phytol. 2005; 166(2):485-96. DOI: 10.1111/j.1469-8137.2005.01349.x. View

Wright I, Reich P, Westoby M, Ackerly D, Baruch Z, Bongers F . The worldwide leaf economics spectrum. Nature. 2004; 428(6985):821-7. DOI: 10.1038/nature02403. View

Both S, Riutta T, Paine C, Elias D, Cruz R, Jain A . Logging and soil nutrients independently explain plant trait expression in tropical forests. New Phytol. 2018; 221(4):1853-1865. DOI: 10.1111/nph.15444. View

Funk J, Larson J, Ames G, Butterfield B, Cavender-Bares J, Firn J . Revisiting the Holy Grail: using plant functional traits to understand ecological processes. Biol Rev Camb Philos Soc. 2016; 92(2):1156-1173. DOI: 10.1111/brv.12275. View

10.

Imsande J, Touraine B . N Demand and the Regulation of Nitrate Uptake. Plant Physiol. 1994; 105(1):3-7. PMC: 159322. DOI: 10.1104/pp.105.1.3. View

11.

Liu C, Li Y, Zhang J, Baird A, He N . Optimal Community Assembly Related to Leaf Economic- Hydraulic-Anatomical Traits. Front Plant Sci. 2020; 11:341. PMC: 7109333. DOI: 10.3389/fpls.2020.00341. View

12.

Guo L, Liu L, Meng H, Zhang L, Silva V, Zhao H . Biogeographic Patterns of Leaf Element Stoichiometry of L. in Degraded Grasslands on Inner Mongolia Plateau and Qinghai-Tibetan Plateau. Plants (Basel). 2022; 11(15). PMC: 9370359. DOI: 10.3390/plants11151943. View

13.

Rastetter E, Ryan M, Shaver G, Melillo J, Nadelhoffer K, Hobbie J . A general biogeochemical model describing the responses of the C and N cycles in terrestrial ecosystems to changes in CO(2), climate, and N deposition. Tree Physiol. 1991; 9(1_2):101-126. DOI: 10.1093/treephys/9.1-2.101. View

14.

Huxman T, Smith M, Fay P, Knapp A, Shaw M, Loik M . Convergence across biomes to a common rain-use efficiency. Nature. 2004; 429(6992):651-4. DOI: 10.1038/nature02561. View

15.

Novotny A, Schade J, Hobbie S, Kay A, Kyle M, Reich P . Stoichiometric response of nitrogen-fixing and non-fixing dicots to manipulations of CO2, nitrogen, and diversity. Oecologia. 2006; 151(4):687-96. DOI: 10.1007/s00442-006-0599-5. View

16.

Gusewell S . N : P ratios in terrestrial plants: variation and functional significance. New Phytol. 2021; 164(2):243-266. DOI: 10.1111/j.1469-8137.2004.01192.x. View

17.

Diaz S, Kattge J, Cornelissen J, Wright I, Lavorel S, Dray S . The global spectrum of plant form and function. Nature. 2015; 529(7585):167-71. DOI: 10.1038/nature16489. View

18.

Faucon M, Houben D, Lambers H . Plant Functional Traits: Soil and Ecosystem Services. Trends Plant Sci. 2017; 22(5):385-394. DOI: 10.1016/j.tplants.2017.01.005. View

19.

Sandel B, Goldstein L, Kraft N, Okie J, Shuldman M, Ackerly D . Contrasting trait responses in plant communities to experimental and geographic variation in precipitation. New Phytol. 2010; 188(2):565-75. DOI: 10.1111/j.1469-8137.2010.03382.x. View

20.

Delgado-Baquerizo M, Maestre F, Gallardo A, Bowker M, Wallenstein M, Quero J . Decoupling of soil nutrient cycles as a function of aridity in global drylands. Nature. 2013; 502(7473):672-6. DOI: 10.1038/nature12670. View