Corporate Banner
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Stanford Scientists Help Shed Light on Key Component of China's Pollution Problem

Published: Friday, March 01, 2013
Last Updated: Thursday, February 28, 2013
Bookmark and Share
Study reveals scale of nitrogen's effect on people and ecosystems.

It's no secret that China is faced with some of the world's worst pollution. Until now, however, information on the magnitude, scope and impacts of a major contributor to that pollution - human-caused nitrogen emissions - was lacking.

A new study co-authored by Stanford Woods Institute biologist Peter Vitousek reveals that amounts of nitrogen (from industry, cars and fertilizer) deposited on land and water in China by way of rain, dust and other carriers increased by 60 percent annually from the 1980s to the 2000s, with profound consequences for the country's people and ecosystems.

Xuejun Liu and Fusuo Zhang at China Agricultural University in Beijing led the study, which is part of an ongoing collaboration with Stanford aimed at reducing agricultural nutrient pollution while increasing food production in China - a collaboration that includes Vitousek and Pamela Matson, a Stanford Woods Institute senior fellow and dean of the School of Earth Sciences.

The researchers analyzed all available data on bulk nitrogen deposition from monitoring sites throughout China from 1980 to 2010.

During the past 30 years, China has become by far the largest creator and emitter of nitrogen globally. The country's use of nitrogen as a fertilizer increased about threefold from the 1980s to 2000s, while livestock numbers and coal combustion increased about fourfold, and the number of automobiles about twentyfold (all of these activities release reactive nitrogen into the environment).

Increased levels of nitrogen have led to a range of deleterious impacts including decreased air quality, acidification of soil and water, increased greenhouse gas concentrations and reduced biological diversity.

"All these changes can be linked to a common driving factor: strong economic growth, which has led to continuous increases in agricultural and non-agricultural reactive nitrogen emissions and consequently increased nitrogen deposition," the study's authors write.

Researchers found highly significant increases in bulk nitrogen deposition since the 1980s in China's industrialized North, Southeast and Southwest. Nitrogen levels on the North China Plain are much higher than those observed in any region in the United States and are comparable to the maximum values observed in the United Kingdom and the Netherlands when nitrogen deposition was at its peak in the 1980s.

China's rapid industrialization and agricultural expansion have led to continuous increases in nitrogen emissions and nitrogen deposition. China's production and use of nitrogen-based fertilizers is greater than that of the United States and the European Union combined.

Because of inefficiencies, more than half of that fertilizer is lost to the environment in gaseous or dissolved forms.

China's nitrogen deposition problem could be brought under control, the study's authors state, if the country's environmental policy focused on improving efficiency in agricultural use of nitrogen and reducing nitrogen emissions from all sources, including industry and transit.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,200+ scientific posters on ePosters
  • More Than 4,600+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Guided Chemotherapy Missiles
Latching chemotherapy drugs onto proteins that seek out tumors could provide a new way of treating tumors in the brain or with limited blood supply that are hard to reach with traditional chemotherapy.
Monday, June 20, 2016
New Imaging Method Reveals Nanoscale Details about DNA
Enhancement to super-resolution microscopy shows orientation of individual molecules, providing a new window into DNA’s structure and dynamics.
Monday, June 20, 2016
$10M Grant Funds Infection-Focused Center
The new center will explore intracellular and intercellular processes by which salmonella bacteria, responsible for more than 100 million symptomatic infections annually, infect immune cells.
Wednesday, April 06, 2016
Resurrecting an Abandoned Drug
Previously discarded drug shows promise in helping human cells in a lab dish fight off two different viruses.
Wednesday, March 30, 2016
Fracking's Impact on Drinking Water Sources
A case study of a small Wyoming town reveals that practices common in the fracking industry may have widespread impacts on drinking water resources.
Wednesday, March 30, 2016
Imaging Cells and Tissues Under the Skin
First technique developed for viewing cells and tissues in three dimensions under the skin.
Tuesday, March 22, 2016
Glucose-Guzzling Immune Cells May Drive Coronary Artery Disease
Researchers at Stanford University have found excessive glucose uptake by inflammatory immune cells called macrophages, which reside in arterial plaques, may be behind coronary artery disease.
Wednesday, March 16, 2016
Ultra-Sensitive Test for Cancers, HIV
Test developed that is thousands of times more sensitive than current diagnostics.
Tuesday, March 15, 2016
Weighing up the Risk of Groundwater Contamination
Faulty, shallow wells can leak oil and natural gas into underground drinking-water supplies, Stanford Professor Rob Jackson finds.
Wednesday, February 24, 2016
Blood Test Could Transform TB Diagnosis
A simple blood test that can accurately diagnose active tuberculosis could make it easier and cheaper to control a disease that kills 1.5 million people every year.
Tuesday, February 23, 2016
Paper Published Based on RNA Game
Video-gamers have co-authored a paper describing a new set of rules for determining the difficulty of designing structures composed of RNA molecules.
Thursday, February 18, 2016
Marker Identifies Most Basic Form of Blood Stem Cell
Nearly 30 years after the discovery of the hematopoietic stem cell, Stanford researchers have found a marker that allows them to study the version of these stem cells that continues to replicate.
Wednesday, February 17, 2016
Flexible Gene Expression May Regulate Social Status
Scientists show how the selective expression of genes through epigenetics can regulate the social status of African cichlid fish.
Monday, January 11, 2016
World Forest Carbon Stocks Overestimated
Researchers with The Natural Capital Project show how fragmentation harms forests' ability to store carbon; more restoration is needed to reconnect forest patches.
Tuesday, January 05, 2016
U.S. Needs a New Approach for Governance of Risky Research
The United States needs better oversight of risky biological research to reduce the likelihood of a bioengineered super virus escaping from the lab or being deliberately unleashed, according three Stanford scholars.
Monday, January 04, 2016
Scientific News
Platelets are the Pathfinders for Leukocyte Extravasation During Inflammation
Findings from the study could help in the prevention and treatment of inflammatory pathologies.
ASMS 2016: Targeting Mass Spectrometry Tools for the Masses
The expanding application range of MS in life sciences, food, energy, and health sciences research was highlighted at this year's ASMS meeting in San Antonio, Texas.
Benchtop Automation Trends
Gain a better understanding of current interest in and future deployment of benchtop automated systems.
Manufactured Stem Cells to Advance Clinical Research
Clinical-grade cell line will enable development of new therapies and accelerate early-stage clinical research.
Dengue Virus Exposure May Amplify Zika Infection
Researchers at Imperial College London have found that the previous exposure to the dengue virus may increase the potency of Zika infection.
Gender Determination in Forensic Investigations
This study investigated the effectiveness of lip print analysis as a tool in gender determination.
Identifying Novel Types of Forensic Markers in Degraded DNA
Scientists have tried to verify the nucleosome protection hypothesis by discovering STRs within nucleosome core regions, using whole genome sequencing.
Proteins in Blood of Heart Disease Patients May Predict Adverse Events
Nine-protein test shown superior to conventional assessments of risk.
Higher Frequency of Huntington's Disease Mutations Discovered
University of Aberdeen study shows that the gene change that causes Huntington's disease is much more common than previously thought.
Starving Stem Cells May Enable Scientists To Build Better Blood Vessels
Researchers from the University of Illinois at Chicago College of Medicine have uncovered how changes in metabolism of human embryonic stem cells help coax them to mature into specific cell types — and may improve their function in engineered organs or tissues.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,200+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,600+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!