| Impact of climate change on planting distribution of winter wheat in Shaanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2012.03.41 |
| Key Words: climate change winter wheat planting distribution Shaanxi Province |
| Author Name | Affiliation | | ZHENG Xiaohua | Shaanxi Meteorological Bureau, Xi’an, Shaanxi 710015, China | | QU Zhenjiang | Shaanxi Meteorological Service Station for Economic Crops, Xi’an, Shaanxi 710015, China | | LU Yuanping | Shaanxi Meteorological Bureau, Xi’an, Shaanxi 710015, China | | DU Lili | Shaanxi Meteorological Bureau, Xi’an, Shaanxi 710015, China | | KANG Xiaoyu | 鞍山市气象局,辽宁 鞍山 |
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| Abstract: |
| The data of climate and winter wheat yield in Shaanxi Province in recent 35 years(1971-2005)were used to analyze the relationship between winter wheat yield and typical climatic factors such as temperature≤0℃during over-wintering stage, precipitation amount in April to May, precipitation days in May and precipitation amount in October to November so as to establish an index system of suitable climatic resources for winter wheat. And the suitalbe planting area of winter wheat in three periods of 1970s, 1980s and after 1990s was calculated by using fuzzy multiple estimation and spatial analysis function of the GIS system. The results show that the most suitable planting area of winter wheat is decreasing due to global warming and the increase of extreme weather events. However, the general suitalbe planting area is increasing and the unsuitable area is decreasing because of the increase of temperature in winter. The planting bound-ary of winter wheat in Shaanxi Province has been expanded northwards to the counties of Dingbian, Jingbian, Hengshan, Zizhou, Mizhi and Jiaxian. |
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