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Impacts of Climate Change on Phonology and Growth of Crops: In the Case of Naju  

Lee, Seung-Ho (Department of Geography, Konkuk University)
Heo, In-Hye (Department of Geography, Konkuk University)
Lee, Kyoung-Mi (Department of Geography, Konkuk University)
Kim, Sun-Young (Department of Geography, Konkuk University)
Lee, Yoon-Sun (Department of Geography, Konkuk University)
Kwon, Won-Tae (Climate Research Laboratory, NIMR, KMA)
Publication Information
Journal of the Korean Geographical Society / v.43, no.1, 2008 , pp. 20-35 More about this Journal
Abstract
This study used crop data from statistics yearbooks in Naju and climate data from Gwangju weather station to investigate whether climate changes have had significant impact on crops. The sample crops are rice, barley, pear, radish, Korean cabbage and red pepper. The results showed that the changes in temperature have shifted crop phonology and affected crop growth. The rice and barley heading date were advancing and had negative correlation with average temperature over 30days before average heading date. The number of rice grains per unit area $(m^2)$ were decreasing while the number of barley grains per unit area $(m^2)$ were increasing because average temperature during grain filling period of rice (barley) was increasing (decreasing). Therefore, decreasing (increasing) yields of rice (barley) can be predicted by global warming. The sprouting, flowering and full flowering date of pear were advancing. The sprouting date of pear had negative correlation with average temperature from February to March and the flowering and full flowering date of pear had negative correlation with average temperature from February to April. The brix and weight of pear were increased and were most sensitive to August and September average temperature. An earlier blossom of pear trees holds the danger of damage by late frosts. The plant length of radish and chinese cabbage were decreasing and negatively influenced by maximum temperature on September. The fruit set numbers of red pepper were increasing recently and had positive correlation with minimum temperature on August. The growth of radish and Korean cabbage will be poor, but the growth of red pepper will be good by rising temperature.
Keywords
climate change; heading date; grain filling period; pear flowering date;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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