| Impacts of climate change on cotton phenophase of a county—— Take Dali in Shaanxi Province for example |
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| DOI：10.7606/j.issn.1000-7601.2012.02.27 |
| Key Words: cotton phenophase growth period climate change Dali County in Shaanxi Province |
| Author Name | Affiliation | | PENG Weiying | College of Tourism and Environmental Science, Shaanxi Normal University, Xi’an 710062, China | | YIN Shuyan | College of Tourism and Environmental Science, Shaanxi Normal University, Xi’an 710062, China | | BAO Xiaojuan | College of Tourism and Environmental Science, Shaanxi Normal University, Xi’an 710062, China | | LI Meirong | Shaanxi Meteorological Service Observatory for Economical Crops, Xi’an 710014,China | | WANG Haiyan | College of Tourism and Environmental Science, Shaanxi Normal University, Xi’an 710062, China
Middle School Affiliated to Xi 'an Jiaotong University, Xi’an 710048, China |
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| Abstract: |
| According to meteorological information in recent 50 years and cotton phenological data in last 10 years in the main cotton producing area of Dali County in Shaanxi Province, the methods of linear trend and Man
n-Kendall inspection were used to analyze the trend of climate and cotton phenological change and the impacts of climate change on cotton phenophase. The results revealed that, in recent 50 years, the average temperature increased considerably , while precipitation decreased slightly, sunlight hours increased, and the trends of extremely low and high temperature were not in synchronization, extremely high temperature dropped, while extremely low temperature rose slightly. Temperature and sunlight hours were the main weather factors to cotton phenophase. The climate turned warming and drying, and sunlight hours increased in last 10 years, which made cotton phonological phase (from seedling period to harvest period) partly advance with different levels, and the seedling period and harvest pe
riod showed the most significant advance, which resulted in the extension of cotton growth period and was conducive to improving the quality of cotton. |
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