| Variation of Climate and its impact on phonological period and growth of Pyrus bretschneideri Rehd in Binxian of Shaanxi Province in last 53 years |
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| DOI：10.7606/j.issn.1000-7601.2012.04.34 |
| Key Words: Pyrus bretschneideri Rehd phonological period climate change Binxian of Shaanxi Province |
| Author Name | Affiliation | | LIANG Cansheng | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | YIN Shuyan | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | LI Meirong | Shaanxi Meteorological Service Station for Economic Crops, Xi'an, Shaanxi 710014, China | | ZHANG Yumin | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China |
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| Abstract: |
| Analysis was made of 1957—2009 meteorological data (temperature and rainfall) from Shaanxi Meteorological Administration and 2001—2009 Pyrus bretschneideri Rehd phonological observation date from Meteorological Service Station for Economic Crops. The results show that, the temperature rise in Binxian in Weibei dryland had an extremely significant linear increase in last 53 years, and the annual average temperature increased by 0.178℃/10a, while the precipitation had a tendency to decrease, and the annual average rainfall decreased by 8.57 mm/10a. The climate in Binxian tend to warming and drying. The main factor affecting phenological changes was temperature. With climate wa
rming, the phenophase before maturity was advanced, the time to mature became shorter, and the deciduous period postponed, which led the whole growth period getting longer. Climate warming and drying increased the heat Pyrus bretschneideri Rehd needed for growth, and decreased the cold threaten in spring florescence. July to August was the period when Pyrus bretschneideri Rehd required much water, since the rainfall at this period reduced, we should notice adding water irrigation. |
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