Effects of climatic variation and warming on rice development across South China

Lu, PL; Yu, Q; Wang, E; Liu, JD; Xu, SH

Effects of climatic variation and warming on rice development across South China

Lu, PL Yu, Q

Wang, E Liu, JD Xu, SH

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Publication Type:: Journal Article
Citation:: Climate Research, 2008, 36 (1), pp. 79 - 88
Issue Date:: 2008-03-13

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Field	Value	Language
dc.contributor.author	Lu, PL	en_US
dc.contributor.author	Yu, Q https://orcid.org/0000-0001-6950-1821	en_US
dc.contributor.author	Wang, E	en_US
dc.contributor.author	Liu, JD	en_US
dc.contributor.author	Xu, SH	en_US
dc.date.issued	2008-03-13	en_US
dc.identifier.citation	Climate Research, 2008, 36 (1), pp. 79 - 88	en_US
dc.identifier.issn	0936-577X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8508
dc.description.abstract	Rice Oryza sativa L. development - and also its response to climatic change - is mainly determined by temperature and photoperiod. An experiment was conducted to study the influence of meteorological factors on growth and development of hybrid rice in South China, in which seeds were sown at different sites at different dates in the spring. The 29 experimental sites were spread over a large area, with latitudes from 21°39′ to 34° 16′ N and altitudes from 1 to 1862 m above sea level. It was found that the length of the growth period at low latitudes (21 to 25°N) was mainly determined by temperature and showed a single-peaked curve with an optimum temperature at about 25.7°C. The temperature response of development is almost linear at high latitudes (25 to 35°N), but the dependence is not as close and significant as that at low latitude, due to longer daylength and its higher variation. A phenological-simulation model with a biological basis was used to simulate the developmental stages of rice in South China. It described both thermal sensitivity and photo-periodism using nonlinear equations. The model was validated by data of sowing-date experiments carried out at different geographical sites, and then was applied to evaluate changes in the length of the rice-growth period in response to climate warming during the period from 1951 to 2006. Because there was significant warming, and the length of the growth period was sensitive to this change over the Yunnan-Guizhou Plateau, the length of the growth period was narrowed by 6 to 14 d (comparing 1990 to 2006 with 1951 to 1989), whereas it was shortened by 1 to 2 d in most low plain areas in South China. The probability of serious temperature related crop failure will increase if planting of a late-maturity variety is adopted in high altitude areas. © Inter-Research 2008.	en_US
dc.relation.ispartof	Climate Research	en_US
dc.relation.isbasedon	10.3354/cr00729	en_US
dc.subject.classification	Meteorology & Atmospheric Sciences	en_US
dc.title	Effects of climatic variation and warming on rice development across South China	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	36	en_US
utslib.for	0401 Atmospheric Sciences	en_US
utslib.for	0502 Environmental Science and Management	en_US
dc.location.activity	ISI:000254891200007	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	36	en_US

Abstract:

Rice Oryza sativa L. development - and also its response to climatic change - is mainly determined by temperature and photoperiod. An experiment was conducted to study the influence of meteorological factors on growth and development of hybrid rice in South China, in which seeds were sown at different sites at different dates in the spring. The 29 experimental sites were spread over a large area, with latitudes from 21°39′ to 34° 16′ N and altitudes from 1 to 1862 m above sea level. It was found that the length of the growth period at low latitudes (21 to 25°N) was mainly determined by temperature and showed a single-peaked curve with an optimum temperature at about 25.7°C. The temperature response of development is almost linear at high latitudes (25 to 35°N), but the dependence is not as close and significant as that at low latitude, due to longer daylength and its higher variation. A phenological-simulation model with a biological basis was used to simulate the developmental stages of rice in South China. It described both thermal sensitivity and photo-periodism using nonlinear equations. The model was validated by data of sowing-date experiments carried out at different geographical sites, and then was applied to evaluate changes in the length of the rice-growth period in response to climate warming during the period from 1951 to 2006. Because there was significant warming, and the length of the growth period was sensitive to this change over the Yunnan-Guizhou Plateau, the length of the growth period was narrowed by 6 to 14 d (comparing 1990 to 2006 with 1951 to 1989), whereas it was shortened by 1 to 2 d in most low plain areas in South China. The probability of serious temperature related crop failure will increase if planting of a late-maturity variety is adopted in high altitude areas. © Inter-Research 2008.

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