The soil carbon (C) and nitrogen (N) availability are important in the regulation of soil C cycling under climate change. Fertilizers alter soil C and N availability, which can affect C balance. However, the impact of fertilizers on C balance in grassland restoration has been equivocal and warrants more research. We determined the direct and indirect effects of the addition of three levels of C (sucrose) (0, 60, and 120 kg C ha yr), three levels of N (urea) (0, 50, and 100 kg N ha yr), and a combination of C plus N at each of the levels on soil respiration (Rs) dynamics and C balance in an alpine meadow in northern Tibet (4700 m above sea level). This study was undertaken during the middle of the growing season in 2011-2012. The addition of C and/or N stimulated CO emission, which was 2-fold greater in 2011 (102-144 g C m) than in 2012 (43-54 g C m). The rate of Rs increased with the addition of N, but was not affected with the addition of C plus N. Microbial biomass C, dissolved organic C and inorganic N were the main drivers of Rs. We concluded that N addition stimulated Rs to a greater extent than C addition in the short term. The application of fertilizer in the restoration of degraded grassland should be re-considered.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.envres.2023.116501 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Background: Fibromyalgia (FM) is a generalized, widespread chronic pain disorder affecting 2.7% of the general population. In recent years, different studies have observed a strong association between FM and psychological trauma.
View Article and Find Full Text PDFInduction of interleukin 21 receptor expression via enhanced intracellular metabolism in B cells and its relevance to the disease activity in systemic lupus erythematosus.
RMD Open
December 2024
The First Department of Internal Medicine, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
Objective: To elucidate the association between the changes in intracellular metabolism in the early stage of B cell activation and systemic lupus erythematosus (SLE) pathogenesis.
Methods: CD19 or CD19CD27 (naïve) cells from the peripheral blood of healthy controls and lupus patients were cultured under different stimuli. The changes in intracellular metabolism and signalling pathways in these cells were evaluated.
Research Progress on the Potential Pathogenesis of Persistent Postural-Perceptual Dizziness.
Brain Behav
January 2025
Department of General Practice, Yantaishan Hospital Affiliated to Binzhou Medical University, Yantai, China.
Introduction: Persistent postural-perceptual dizziness (PPPD) is the most prevalent chronic functional dizziness in the clinic. Unsteadiness, dizziness, or non-spinning vertigo are the main symptoms of PPPD, and they are typically aggravated by upright posture, active or passive movement, and visual stimulation. The pathogenesis of PPPD remains incompletely understood, and it cannot be attributed to any specific anatomical defect within the vestibular system.
View Article and Find Full Text PDFA Neural Circuit From Paraventricular Nucleus of the Thalamus to the Nucleus Accumbens Mediates Inflammatory Pain in Mice.
Brain Behav
January 2025
Department of Anesthesiology & Clinical Research Center for Anesthesia and Perioperative Medicine & Key Laboratory of Anesthesia and Analgesia Application Technology, Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, Huzhou, China.
Background: Pain is a prevalent comorbidity in numerous clinical conditions and causes suffering; however, the mechanism of pain is intricate, and the neural circuitry underlying pain in the brain remains incompletely elucidated. More research into the perception and modulation of pain within the central nervous system is essential. The nucleus accumbens (NAc) plays a pivotal role in the regulation of animal behavior, and extensive research has unequivocally demonstrated its significant involvement in the occurrence and development of pain.
View Article and Find Full Text PDFChanges in expression of FSH and LH receptors in the ovine main immune organs during early pregnancy.
Vet Immunol Immunopathol
December 2024
School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China. Electronic address:
Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are mainly involved in follicle development and ovulation, but FSH receptor (FSHR) and LH receptor (LHR) are also expressed in the immune system. Nevertheless, it is not clear if gestation affects the expression of the FSHR and LHR in the maternal main immune organs (thymus, lymph node, spleen, and liver). In this study, these organs were sampled from the ewes at the estrous cycle, and during early pregnancy, and mRNA and protein expression of FSHR and LHR were analyzed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!