Forests ecosystem plays a significant role in supplying multiple services given the unique properties of forest soils, which elements C, N, and P are essential to support soil fertility site productivity. However, at different depths between plantation forests (PF) natural (NF) have not been well quantified. Therefore, current study was carried out Qilian Mountains northwest China determine dif...

In order to evaluate the dynamics of carbon storage during forest succession and explore the significance of water relations and soil stability in forest environments, a study was conducted in 2011. This study investigated the dynamics of soil organic carbon (SOC) fractions and its protection through aggregation along the successional forests. An experiment in South China examined pine forest (...

Paddy fields are important ecosystems, as rice is the primary food source for about half of the world's population. Paddy fields are impacted by nitrogen fertilization and are a major anthropogenic source of methane. Microbial diversity and methane metabolism were investigated in the upper 60 cm of a paddy soil by qPCR, 16S rRNA gene amplicon sequencing and anoxic 13C-CH4 turnover with a suite ...

OBJECTIVE To determine whether water exposure causes middle ear contamination in patients with collar button tympanostomy tubes (TTs). METHOD AND DESIGN An in vitro model of a human head that contained an auricle, external auditory canal, tympanic membrane with TT, middle ear, eustachian tube, and mastoid cavity was developed. Two electrodes connected to an external ohmmeter resided in the mi...

Abstract. Soil ecological stoichiometry offers a tool to explore the distribution, cycling, limitation, and balance of chemical elements in tea plantation ecosystems. This study aimed how soil organic C (OC) nutrient contents (total N (TN), total P (TP), Ca2+, Mg2+, Fe2+, Mn2+) as well their stoichiometric ratios (C/N, C/P, N/P, Ca/Mg, Fe/Mn) varied with age (8, 17, 25, 43 years) depth (0–10, 1...

1. To study the potential for complementarity in nitrogen acquisition from different soil depths, we injected an isotope tracer ( 15 NH 4 Cl) at 5 and 20 cm depths in plant communities containing Achillea millefolium L. and Festuca ovina L. or Phleum pratense L. and Trifolium pratense L. in monocultures and two-species mixtures. 2. In monoculture, Festuca and Phleum took up tracer at 5 and 20 c...

In order to test the short-term effects of straw amendment on soil organic C (SOC) stabilization, SOC protection mechanisms, and bacterial community, we examined which taxonomic groups were associated with protected fractions via different depths. We conducted a 5-year field experiment including total four treatments: S0 (no amendment), S1 (0–20 cm straw-amended soil), S2 (0–40 soil) S3 (0–60 s...