12 research outputs found
The total biomass phospholipid fatty acids (PLFAs), percentages of fungal and bacterial PLFAs to the total biomass PLFAs, and the ratio of fungal to bacterial PLFAs as influenced by carbon addition (+60%) and water addition (+30%) in temperate steppe of northeastern China.
<p>Values show the monthly means from June to September in the growing season. Vertical bars indicate standard errors of means (n = 6). Difference lowercase letters indicate statistically significant differences (<i>P</i><0.05). A = ambient condition (control), C = carbon addition, W = water addition, CW = combined carbon and water additions.</p
Responses of aboveground biomass carbon (C) and nitrogen (N), root biomass C and N, peak aboveground biomass of grass and forb and the grass: forb ratio to carbon addition (+60%) and water addition (+30%) in 2010 and 2011 in temperate steppe of northeastern China.
<p>Vertical bars indicate standard errors of means (n = 6). Difference lowercase letters indicate statistically significant differences (<i>P</i><0.05). A = ambient condition (control), C = carbon addition, W = water addition, CW = combined carbon and water additions.</p
Figure 1
<p>Daily precipitation (bars) and daily mean air temperature (line) in 2010 and 2011 (A). Data are from the eddy tower adjacent (approximately 100 m) to the experimental site. Seasonal variations of soil temperature (B) and water content (C) at topsoil layer (0–10 cm) in response to carbon addition (+60%) and water addition (+30%) in the temperate steppe of northeastern China. Insets represent the two seasonal mean values of soil temperature (ST) and water content (SWC). Vertical bars indicate standard errors of means (n = 6). Difference lowercase letters indicate statistically significant differences (<i>P</i><0.05). A = ambient condition (control), C = carbon addition, W = water addition, CW = combined carbon and water additions.</p
Results (<i>F</i>-values) of Four-way ANOVAs on the effects of carbon addition (C), water addition (W), sampling date (D), year (Y), and their interactions on soil temperature (ST), soil water content (SWC), microbial biomass C (MBC), microbial biomass N (MBN), microbial activity (SMA), metabolic quotient (<i>q</i>CO<sub>2</sub>), soil inorganic N (IN), soil total PLFAs (TP), contribution of soil fungal PLFAs (F) and bacterial PLFAs (B), and the ratio of fungal to bacterial PLFAs (F: B).
*<p>, **, <i>and</i> ***<i>represent significant at P<0.05, 0.01, and 0.001, respectively.</i></p
Data_Sheet_1_The effects of litter input and increased precipitation on soil microbial communities in a temperate grassland.PDF
Global warming has contributed to shifts in precipitation patterns and increased plant productivity, resulting in a significant increase in litter input into the soils. The enhanced litter input, combined with higher levels of precipitation, may potentially affect soil microbial communities. This study aims to investigate the effects of litter input and increased precipitation on soil microbial biomass, community structure, and diversity in a temperate meadow steppe in northeastern China. Different levels of litter input (0%, +30%, +60%) and increased precipitation (0%, +15%, +30%) were applied over a three-year period (2015–2017). The results showed that litter input significantly increased the biomass of bacteria and fungi without altering their diversity, as well as the ratio of bacterial to fungal biomass. Increased precipitation did not have a notable effect on the biomass and diversity of bacteria and fungi, but it did increase the fungal-to-bacterial biomass ratio. However, when litter input and increased precipitation interacted, bacterial diversity significantly increased while the fungal-to-bacterial biomass ratio remained unchanged. These findings indicate that the projected increases in litter and precipitation would have a substantial impact on soil microbial communities. In energy-and water-limited temperate grasslands, the additional litter inputs and increased precipitation contribute to enhanced nutrient and water availability, which in turn promotes microbial growth and leads to shifts in community structure and diversity.</p
Anatomical variations in <i>Leymus chinensis</i> at large scale longitudinal gradient in northeast China.
<p>Values are means (± SE) of 25–30 replications. Values with the same letters indicate no significant difference between sites (site/site) within each anatomical property (P > 0.05).</p
Correlations of proline content and K<sup>+</sup>/Na<sup>+</sup> in <i>Leymus chinensis</i> with annual precipitation (a, b) and elevation (c, d) along large-scale longitudinal gradient in northeast China.
<p>Bars are means (± SE) of 30–35 replications.</p
Correlations between anatomical and physiological traits (trait/trait) in <i>Leymus chinensis</i> at large scale gradient in northeast China (* P<0.05, ** P<0.01).
<p>Correlations between anatomical and physiological traits (trait/trait) in <i>Leymus chinensis</i> at large scale gradient in northeast China (* P<0.05, ** P<0.01).</p
Variations of leaf thickness (a) and leaf mass per unit area (LMA) (b) in <i>Leymus chinensis</i> along large-scale longitudinal gradient and their correlations with annual precipitation (c, d) and elevation (e, f) at the gradient in northeast China.
<p>Bars are means (± SE) of 25–30 replications. Bars with the same lowercase letters indicate no statistically significant differences (P > 0.05).</p
Proline, soluble sugar, [K<sup>+</sup>], [Na<sup>+</sup>] and K<sup>+</sup>/ Na<sup>+</sup>in <i>Leymus chinensis</i> at large scale longitudinal gradient in northeast China.
<p>Values are means (± SE) of 30–35 replications. Values with the same letters indicate no significant difference between sites (site/site) within each physiological property (P>0.05).</p