C:N:P stoichiometry of <i>Artemisia</i> species and close relatives across northern China: unravelling effects of climate, soil and taxonomy

Yang, Xuejun; Huang, Zhenying; Zhang, Keliang; Cornelissen, Johannes H. C.

doi:10.1111/1365-2745.12409

Cited by 87 publications

(80 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was probably because the main source of P is rock weathering, which is a long process (Shen et al 2011) and not significantly influenced by grazing. A negative correlation between TC and BD (P = 0.037, Table 2) was found in this study, like some others (Steffens et al 2008;Yang et al 2015). This could be due to the fact that BD depends on the size and density of soil mineral and organic particles and how they are packed together (Mora and Lázaro 2014); therefore, low BD is a remarkable feature of soil organic matter immobilization (Yang et al 2015).…”

Section: X) and The Vegetation Characteristics (Y)supporting

confidence: 60%

“…The variation in pH in this study is probably related to vegetation coverage, variations of root systems, and organic matter content (Su et al 2005). The BD is an important factor affecting key soil functions including soil water, nutrients, and carbon stocks (Mora and Lázaro 2014) and therefore is an indicator of soil porosity versus compaction (Yang et al 2015). Our experiment showed significantly increased BD in plots of higher grazing intensities (Fig.…”

Section: Discussionmentioning

confidence: 62%

See 1 more Smart Citation

Soil properties and species composition under different grazing intensity in an alpine meadow on the eastern Tibetan Plateau, China

Yang

Xiong

et al. 2016

Environ Monit Assess

View full text Add to dashboard Cite

As the main form of land use and human disturbance of grassland, livestock grazing has great influences on the soil resources and plant communities. This study observed the variation of soil properties and community characteristics of four treatments of different grazing intensity (no grazing, UG; light grazing, LG; moderate grazing, MG; and heavy grazing, HG) in an alpine meadow of Sichuan Province on the northeastern margin of the Tibetan Plateau. The results showed that grazing increased the pH, soil bulk density (BD), and contents of total carbon (TC) and total nitrogen (TN), and the BD increased while the others decreased with the grazing intensity. At the community level, with the increase of the grazing intensity, the vegetation coverage (R 2 = 0.61, P < 0.001), mean height of community (R 2 = 0.37, P < 0.001), aboveground biomass (R 2 = 0.54, P < 0.001), litter biomass (R 2 = 0.84, P < 0.001), and percentage of aboveground biomass of palatable grasses to total biomass (R 2 = 0.74, P < 0.001) significantly decreased, while the belowground biomass (R 2 = 0.72, P < 0.001) and the root/shoot (R/S) ratio (R 2 = 0.65, P < 0.001) increased. The species richness was the greatest at LG and the total biomass at UG. With grazing, the dominant species of the plant community shifted from palatable grasses (Gramineae and Cyperaceae) to unpalatable grasses (Compositae and Ranunculaceae). Based on the results, LG may be the optimal grassland management mode to be used in the long time in the alpine meadow of the Tibetan Plateau.

show abstract

Section: X) and The Vegetation Characteristics (Y)supporting

confidence: 60%

Section: Discussionmentioning

confidence: 62%

Soil properties and species composition under different grazing intensity in an alpine meadow on the eastern Tibetan Plateau, China

Yang

Xiong

et al. 2016

Environ Monit Assess

View full text Add to dashboard Cite

show abstract

“…Previous studies found that leaf stoichiometry is impacted strongly by genetics, for example life form, family, genus, species (Kerkhoff et al 2006;Li et al 2011;Yang et al 2015), and provenance or genotype (Å gren and Weih 2012; Wu et al 2014). However, we found that the effect of provenance (genetics) on leaf stoichiometry was not significant.…”

Section: Discussionmentioning

confidence: 99%

“…Plant stoichiometry is strongly impacted by taxonomic affiliation (genetics) (Wright et al 2005;Demars and Edwards 2008;Zhang et al 2012;Yang et al 2015) and environment, such as soil nutrients (Ordonez et al 2009;Chen et al 2013) and climate (Reich and Oleksyn 2004;Elser et al 2010;Yuan et al 2011;Dijkstra et al 2012). How genetics and the environment affect plant stoichiometry has recently attracted a great deal of attention from ecologists (Ordonez et al 2009;Han et al 2011;Å gren and Weih 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of environment and genetics on leaf N and P stoichiometry for Quercus acutissima across China

et al. 2016

View full text Add to dashboard Cite

Plant stoichiometry varies mainly with environment and taxonomic affiliation (genetics). Understanding how environment and genetics regulate plant stoichiometry would help us to better understand stoichiometric homeostasis. Recent studies quantified the effect of environment and genetics on plant stoichiometry for multispecies over a large scale, but few studied the effect within a given species. Provenance tests are best suited to study the effect of environment (site) and genetics (provenance) on stoichiometry and assess the homeostasis for a given species. We determined leaf N and P concentrations for 29 Quercus acutissima provenances, from across the distribution in China, grown in three common gardens with different environments. Compared to the statistically insignificant provenance effect, site effect was large and statistically significant for leaf N and P stoichiometry (P \ 0.05), with 43.47, 44.04, and 59.38 % of the total variations accounted for leaf N and P concentrations and N/P ratio, respectively. Meanwhile, the slopes of SMA (Standardized Major Axis) for leaf N concentration and N/P ratio, and leaf P concentration and N/P ratio, remained similar among the sites. Our results suggest that leaf N and P stoichiometry is mainly impacted by environment for a given species, and relative stability of leaf stoichiometric relationships is found independent of site environment, which supports stoichiometric homeostasis.

show abstract

“…These trends help to explain why the numerical values of the N vs. P scaling exponent decline from the tropics to higher latitudes for each of the major plant functional groups. Species composition and soil relative nutrient availability are additional factors that are related to variation of the N vs. P scaling exponent across different ecoregions (continents) because they influence the N and P stoichiometry [48]. For example, herbs and conifers are especially well represented in North America and Europe compared to the other four continents, whereas broad-leaved deciduous species dominate the species composition in Asia, and evergreen broad-leaved species dominate Oceania, Africa and South America (Fig.…”

Section: Possible Mechanisms Of the Different N-p Scaling Exponentsmentioning

confidence: 99%

Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent

Tian

Yan

Niklas

et al. 2017

National Science Review

142

113

View full text Add to dashboard Cite

Leaf nitrogen (N) and phosphorus (P) concentrations constrain photosynthetic and metabolic processes, growth and the productivity of plants. Their stoichiometry and scaling relationships regulate the allocation of N and P from subcellular to organism, and even ecosystem levels, and are crucial to the modelling of plant growth and nutrient cycles in terrestrial ecosystems. Prior work has revealed a general biogeographic pattern of leaf N and P stoichiometric relationships and shown that leaf N scales roughly as two-thirds the power of P. However, determining whether and how leaf N and P stoichiometries, especially their scaling exponents, change with functional groups and environmental conditions requires further verification. In this study, we compiled a global data set and documented the global leaf N and P concentrations and the N:P ratios by functional group, climate zone and continent. The global overall mean leaf N and P concentrations were 18.9 mg g −1 and 1.2 mg g −1 , respectively, with significantly higher concentrations in herbaceous than woody plants (21.72 mg g −1 vs. 18.22 mg g −1 for N; and 1.64 mg g −1 vs. 1.10 mg g −1 for P). Both leaf N and P showed higher concentrations at high latitudes than low latitudes. Among six continents, Europe had the highest N and P concentrations (20.79 and 1.54 mg g −1 ) and Oceania had the smallest values (10.01 and 0.46 mg g −1 ). These numerical values may be used as a basis for the comparison of other individual studies. Further, we found that the scaling exponent varied significantly across different functional groups, latitudinal zones, ecoregions and sites. The exponents of herbaceous and woody plants were 0.659 and 0.705, respectively, with significant latitudinal patterns decreasing from tropical to temperate to boreal zones. At sites with a sample size ≥10, the values fluctuated from 0.366 to 1.928, with an average of 0.841. Several factors including the intrinsic attributes of different life forms, P-related growth rates and relative nutrient availability of soils likely account for the inconstant exponents of leaf N vs. P scaling relationships.

show abstract

C:N:P stoichiometry of Artemisia species and close relatives across northern China: unravelling effects of climate, soil and taxonomy

Cited by 87 publications

References 81 publications

Soil properties and species composition under different grazing intensity in an alpine meadow on the eastern Tibetan Plateau, China

Soil properties and species composition under different grazing intensity in an alpine meadow on the eastern Tibetan Plateau, China

Effect of environment and genetics on leaf N and P stoichiometry for Quercus acutissima across China

Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent

Contact Info

Product

Resources

About