Navigation Links
Is rainfall a greater threat to China's agriculture than warming?
Date:4/4/2012

New research into the impact of climate change on Chinese cereal crops has found rainfall has a greater impact than rising temperature. The research, published in the Journal of the Science of Food and Agriculture found that while maize is sensitive to warming increases in temperature from 1980 onwards correlated with both higher and lower yields of rice and wheat.

The study was carried by Dr. Tianyi Zhang, from the Institute of Atmospheric Physics, and Dr. Yao Huang, from the Institute of Botany, both at the Chinese Academy of Sciences. The paper is part of a special collection of free articles on the links between climate change, agriculture and the function of plants.

"China has experienced significant climate change over the last century", said Zhang. "The annual mean air temperature increased by 1.1 C from 1951 to 2001, rainfall in Western China increased by up to 15% per decade and decreased in the North."

"Projections from climate models predict that mean temperature could rise by 2.3-3.3 C by 2050 while rainfall could increase by 5-7%," said Huang. "This could have a major impact on China's agriculture which accounts for 7% of the world's arable land but feeds about 22% of the global population."

The authors turned to China's provincial agricultural statistics and compared the data to climate information from the China Meteorological Administration. They focused their analysis on China's main cereal crops, rice, which is grown throughout China, as well as wheat and maize, which are mainly grown in the North.

The results show a significant warming trend in China from 1980 to 2008 and that maize is particularly sensitive to warming. However, they also found that rising temperature collated with both higher and lower wheat and rice yields, refuting the thoughts that warming often results in a decline in harvests.

"Of the three cereal crops, further analysis suggested that reduction in yields with higher temperature is accompanied by lower rainfall, which mainly occurred in northern parts of China," said Zhang. "This suggests it was potentially droughts, relative to warming, that more affected harvest yields in the current climate."

"It is often claimed that the rising temperature causes a decrease in the yields of Chinese cereal crops, yet our results show that warming had no significant harmful effect on cereal yields especially for rice and wheat at a national scale from 1980 to 2008," concluded Zhang and Huang. "However, warming may still plays an indirect role, like the exacerbated drought conditions caused by the rising temperatures."


'/>"/>

Contact: Ben Norman
lifesciencenews@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert

Related biology news :

1. Evidence of past Southern hemisphere rainfall cycles related to Antarctic temperatures
2. Rainfall suspected culprit in leaf disease transmission
3. Landslides: How rainfall dried up Panamas drinking water
4. University of Miami scientists find new way to estimate global rainfall and track ocean pollution
5. Volcanic eruptions affect rainfall over Asian monsoon region
6. Ethiopias climate 27 million years ago had higher rainfall, warmer soil
7. The sky is not falling: Pollution in eastern China cuts light, useful rainfall
8. Nearby chimpanzee populations show much greater genetic diversity than distant human populations
9. Postmenopausal women at greater risk of stroke from high trans fat intake
10. Climate sensitivity greater than previously believed
11. Climate change effect on release of CO2 from peat far greater than assumed
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... UBM,s Advanced Design and Manufacturing event in ... and evolving technology through its 3D Printing and Smart ... the expo portion of the event and feature a ... on trending topics within 3D printing and smart manufacturing. ... will take place June 13-15, 2017 at the Jacob K. ...
(Date:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
Breaking Biology News(10 mins):
(Date:9/18/2017)... , Sept. 18, 2017   Montrium , a growing leader ... exciting new partnership with a groundbreaking non-profit research organization, Multidisciplinary ... ... psychotherapy studies for PTSD ... recently granted Breakthrough Therapy Designation to MDMA for the treatment of ...
(Date:9/14/2017)... ... September 14, 2017 , ... ... pharma and biotech at the third annual DrugDev Summit, November 7-8, 2017 in ... the world’s most progressive clinical research leaders for best practice case studies, keynote ...
(Date:9/14/2017)... (PRWEB) , ... September 14, 2017 , ... AIM Global, ... Medical Tracking Systems Inc. has won the 2017 Case Study Competition for AIDC. ... which provide benefits that decrease risk” and push the adoption of automated data collection ...
(Date:9/12/2017)... Brunswick, NJ (PRWEB) , ... September 12, 2017 ... ... one of the fastest growing b2b product testing and development companies will be ... expanded service offerings. , Contract Pharma is an educational ...
Breaking Biology Technology: