Impacts of Northern Expansion of Typical Corn Planting Regions in China under the Background of Climate Warming and SpatialEvolution of Cold Damage

DOI

10.2991/rac-18.2018.32How to use a DOI?

Keywords

Cold damage,Corn planting areas,Spatial variation,Climate change

Abstract

Global warming has caused geographical displacements in the north of the safe corn planting in the Northeast, and the occurrence of cold damage in sensitive areas after the north boundary displacement has yet to be explored. Based on the effective accumulated temperature required for the growth and development of different maize varieties in Northeast China, combining with indicators of corn chilling injury in different growth stages, the changes in suitable areas for maize planting in Northeast China and the occurrence frequency of cold damage in sensitive areas were revealed, and the index conducts trend was analysed. The results show that the safety boundary of corn planting has been continuously moving northwards in the past 30 years, and early maturing varieties have gradually been replaced by medium-maturing varieties; in the context of global warming, the frequency of chilling damage in most regions of Northeast China showed a downward trend, and the cold damage intensity showed a downward trend. The decline is significant, but it does not rule out the extreme cold damage in the region. Therefore, the spatial evolution rules of northern expansion and cold damage of maize planting areas under the background of climate warming were explored, which provided reference for the rational distribution of corn and prevention of cold damage in Northeast China.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jing Zhao
AU  - Jiquan Zhang
AU  - Xingpeng Liu
AU  - Ying Li
AU  - Rui Wang
PY  - 2018/10
DA  - 2018/10
TI  - Impacts of Northern Expansion of Typical Corn Planting Regions in China under the Background of Climate Warming and SpatialEvolution of Cold Damage
BT  - Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)
PB  - Atlantis Press
SP  - 205
EP  - 210
SN  - 2352-5428
UR  - https://doi.org/10.2991/rac-18.2018.32
DO  - 10.2991/rac-18.2018.32
ID  - Zhao2018/10
ER  -