Publications by authors named "Linfa Fang"

Article Synopsis
  • - Agricultural systems are significant contributors to global nitrous oxide (NO) emissions, largely due to over-fertilization and antibiotic residues, prompting global concern about environmental impacts.
  • - Research focused on how ciprofloxacin (CIP) increases NO production in soils by altering microbial processes, revealing that exposure leads to a shift from nitrification to denitrification and increases certain bacteria that produce NO.
  • - The study identifies a specific strain, Methylobacillus flagellatus KT, which can produce NO while also breaking down CIP, suggesting it uses CIP byproducts as food and highlighting its role in both NO emission and antibiotic degradation in soil ecosystems.
View Article and Find Full Text PDF

The land application of livestock manure has been widely acknowledged as a beneficial approach for nutrient recycling and environmental protection. However, the impact of residual antibiotics, a common contaminant of manure, on the degradation of organic compounds and nutrient release in Eutric Regosol is not well understood. Here, we studied, how oxytetracycline (OTC) and ciprofloxacin (CIP) affect the decomposition, microbial community structure, extracellular enzyme activities and nutrient release from cattle and pig manure using litterbag incubation experiments.

View Article and Find Full Text PDF

Addressing carbon (C) and nitrogen (N) losses through composting has emerged as a critical environmental challenge recently, and how to mitigate these losses has been a hot topic across the world. As the emissions of carbonaceous and nitrogenous gases were closely correlated with the composting process, the feasibility of composting duration shortening on C and N loss needs to be explored. Therefore, the goal of this paper is to find evidence-based approaches to reduce composting duration, utilizing the seed germination index as a metric (SCD@GI), for assessing its efficiency on C and N loss reductions as well as compost quality.

View Article and Find Full Text PDF

Returning organic nutrient sources (for example, straw and manure) to rice fields is inevitable for coupling crop-livestock production. However, an accurate estimate of net carbon (C) emissions and strategies to mitigate the abundant methane (CH) emission from rice fields supplied with organic sources remain unclear. Here, using machine learning and a global dataset, we scaled the field findings up to worldwide rice fields to reconcile rice yields and net C emissions.

View Article and Find Full Text PDF

The occurrence of antibiotics in agricultural soils has raised concerns due to their potential risks to ecosystems and human health. However, a comprehensive understanding of antibiotic accumulation, distribution, and potential risks to terrestrial ecosystems on a global scale is still limited. Therefore, in this study, we evaluated the accumulation of antibiotics and their potential risks to soil microorganisms and plants, and highlighted the driving factors of antibiotic accumulation in agricultural soils based on 134 peer-reviewed studies (between 2000 and 2022).

View Article and Find Full Text PDF
Article Synopsis
  • Veterinary antibiotics (VAs) are increasingly found in soils and could potentially harm ecosystems and human health, making it crucial to assess their accumulation in agricultural areas like Chongqing, China.
  • Researchers detected 26 types of VAs in vegetable field soils, with high levels of tetracyclines (TCs) and quinolones (QNs) indicating significant ecological risks and contributing to antimicrobial resistance.
  • The study suggests that socioeconomic factors, such as farmers' education and agricultural practices, influence VA accumulation, emphasizing the need for sustainable farming practices to mitigate these risks.
View Article and Find Full Text PDF

To explore the pollution characteristics, ecological risks, and sources of heavy metals, soil surface samples of vegetable fields in 14 typical districts of the Three Gorges Reservoir area (Chongqing section) were collected in October 2021. The contents of seven types of heavy metals (As, Cd, Cr, Cu, Ni, Pb, and Zn) were analyzed. Based on the single-factor pollution index, the Nemerow integrated pollution index and potential ecological risk coefficient of heavy metals were evaluated.

View Article and Find Full Text PDF

Carbon neutrality is now receiving global concerns for the sustainable development of human societies, of which how to reduce greenhouse gases (GHGs) emissions and enhance carbon conservation and sequestration becomes increasingly critical. Therefore, this study conducted a meta-analysis and literature review to assess carbon loss and to explore the main factors that impact carbon loss during organic solid waste (OSW) composting. The results indicated that over 40 % of carbon was lost through composting, mainly as CO-C and merely as CH-C.

View Article and Find Full Text PDF

The accumulation of antibiotics in farmland and its ecological risk have become a research hotspot at home and abroad. The objective of this study was to investigate the occurrence and accumulation of antibiotics and their potential environmental and ecological risks in vegetable fields in Kaizhou district of Chongqing country. The occurrence characteristics of antibiotics including tetracyclines, sulfonamides, quinolones, macrolides, and chloramphenicols were detected using experimental analysis.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessiondk7be3lqct6kbedtpeje4tve9k8esspi): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once