| Analysis on change characteristics of agricultural climate resources in Guanzhong under global warming condition |
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| DOI：10.7606/j.issn.1000-7601.2009.03.42 |
| Key Words: climatic change precipitation accumulated temperature first frost date and latest frost date Guanzhong |
| Author Name | Affiliation | | CAI Xinling | Shaanxi Climate Center, Xi’an, Shaanxi 710014, China | | GAO Hongyan | Shaanxi Provincial Specialized Meteorological Office, Xi’an, Shaanxi 710014, China | | WANG Fanqiang | Shaanxi Climate Center, Xi’an, Shaanxi 710014, China | | WU Suliang | Shaanxi Climate Center, Xi’an, Shaanxi 710014, China | | LEI Xiangjie | Shaanxi Climate Center, Xi’an, Shaanxi 710014, China |
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| Abstract: |
| Based on the meteorological data of 30 counties in Guanzhong plain from 1961 to 2007, the change characteristics of the mean temperature and precipitation is statistically analyzed.The main conclusion are summarized as follows: The mean annual temperature in Guanzhong plain has been increasing in recent 47 years because of the increase of mean temperature in spring and winter, while the annual precipitation is in a decreased trend.Increase of the annual rainfall in the 1980s is mainly attributable to the increase in summer, and decrease in the 1990s is mainly attributable to the decrease in fall.In significant warming since the 1990s, thermal resources get richer and increase in drought events in spring. |
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