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."
This special collection of free articles is featured on the new Life Science pages on wileychina.com, which are being launched from March 2012 to create a Life Sciences Centre for the Chinese research community. New pages will be launched each month and in March the focus is on Climate Change and Plant Science.
Ben Norman | EurekAlert!
Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University
New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine