| Change characteristics of agricultural climate resources under the background of climate change in Southwestern Shandong Province |
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| DOI：10.7606/j.issn.1000-7601.2012.06.43 |
| Key Words: agricultural climatic resources change characteristics trend Southwestern Shandong Province |
| Author Name | Affiliation | | LI Ruiying | Heze Municipal Bureau of Meteorology, Heze, Shandong 274000, China | | REN Chongyong | Heze Municipal Bureau of Meteorology, Heze, Shandong 274000, China | | ZHANG Cuicui | Jining Municipal Bureau of Meteorology, Jining, Shandong 272000, China | | LIU Tao | Heze Municipal Bureau of Meteorology, Heze, Shandong 274000, China | | JIANG Xiaodong | Key Laboratory of Agromeierology of Jiangsu Province, College of Applied Meteorology of Nanjing Uniuersiiy of lnformation Science & Technology, Nanjing, Jiangsu 210044, China |
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| Abstract: |
| Based on the meteorological data from 1961-2010 in Southwestem Shandong Province, by using climatic trend rate and the Mann-Kendall break detector method, analysis was made of the variation trends of regional main a- gricultural climate resources of the four seasons and the annual light, heat and water and so on. The results showed that the annual average temperature, ≥0℃ and ≥10℃ accumulated all had increasing tendeney, with the tendeney ratios of climate were 0.16 ℃/10 a,53.8(℃·d)/10 a,83.5(℃·d)/10 a respectively, and this increase was most distinct during winter while spring secondly, abrupt changes occurred in the middle of 1990s, the frostless period was prolonged by 1.9 d/10a, all over showed that the heat resources became rich after abrupt change; the light resources had very significant decreasing trend, especially the most remarkable during summer, autumn and winter, and the light resources had abrupt changed at the middle of 1980s, while the solar radiation and sunshine hours decreased by 208.4 MJ/(m2·10a)and 112.1 h/10 a respectively; the annual precipitation had no obvious change, with a little increase, and it had uneven dis-tribution in inter-annual and each season every year, while the days of heavy rainfall increased, the water decreased dur-ing spring and autumn while increased during summer and winter. The whole study area had warming and drying trend while the main characteristics were rich heat resources, deficiency light resources and insufficient water rcsourccs. |
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