JOURNAL OF NATURAL RESOURCES ›› 2012, Vol. 27 ›› Issue (9): 1460-1470.doi: 10.11849/zrzyxb.2012.09.003

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Changes of Temperature and Precipitation in Growing Season and Cropping Strategy under Global Climate Change in Jilin Province

JIN Ying-hua1, ZHOU Dao-wei2   

  1. 1. School of Urban and Environment Science, Northeast Normal University, Changchun 130024, China;
    2. Northeast Institute of Geography and Agroecology, CAS, Changchun 130012, China
  • Received:2011-07-07 Revised:2012-04-05 Online:2012-09-20 Published:2012-09-20

Abstract: This study aims to reveal the temperature and precipitation changes during the growing season in plain and forest regions of Jilin Province under global climate change and put forward the regional crops adjustment for these regions. The results showed that the greatest change of the first growing season advanced, the last growing season delayed, the growing season lengthening and active accumulated temperature increasing occurred in plain region, so it has the largest adjusted space for cropping strategy. In forest regions, changes of the length and active accumulated temperature of high and mid-altitude regions were bigger than those of low altitude region in the growing season, and the changes of growing season lengthening for three forest regions mainly occurred based on the last delayed growing season.For example, in plain region, advancing the sowing date, delaying the harvest date and sowing the late maturing variety instead of mid-late maturing variety is a better mode for corn. In order to avoid spring drought, the middle-late maturing variety is still planted in the western plain region. In low altitude forest region, middle maturing variety should be replaced by middle-late maturing variety. In mid-altitude forest region, early maturing variety and middle-early maturing variety should be replaced by middle-early maturing variety and middle maturing variety. In high altitude forest region, exceedingly early maturing variety and early maturing variety should be replaced by middle-early maturing variety. In these three regions, the heat resources need to make crop mature should be attained by delaying the harvesting date.

Key words: change of accumulated temperature in growing season, change of the length of growing season, cropping strategy response, Jilin Province

CLC Number: 

  • S162.3