| Evaluation of adaptation degree for food production under restricted condition of precipitation ——A case study in Ulanqab City of Inner Mongolia |
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| DOI：10.7606/j.issn.1000-7601.2016.03.37 |
| Key Words: precipitation fluctuation stability of food production adaptation degree climate warming and drying |
| Author Name | Affiliation | | SUN Xue-ping | Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China；University of Chinese Academy of Sciences, Beijing 100049, China
School of Geography and Remote Sensing Science, Beijing Normal University, Bei
jing 100875, China | | SU Yun | School of Geography and Remote Sensing Science, Beijing Normal University, Beijing 100875, China |
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| Abstract: |
| Based on the relationship between fluctuation of interannual precipitation and stability of food production, put forward the conceptual model for adaptability evaluation of the food production and established the evaluation standard. The adaptation degree of food production can be divided into 1 to 4 levels. A case study of Ulanqab City in Inner Mongolia, located in rain feed farming areas and arid and semi-arid of Northern China, selected the grain production, sowed areas, daily temperature and precipitation data from 1959 to 2009 in Ulanqab City year by year, combined with the mathematic statistic analysis, has revealed the change trend of the adaptation level of regional food production. The meteorological statistical analysis results showed that: The precipitation in this region had a slight decrease in the fluctuation. In recent 30 years, the yearly mean precipitation was less than 1960 s about 30 mm, the temperature over the same period has increased about 3.1℃, and the reginal trend of warm and dry on the whole was obvious. The statistical results of grain production showed that: The increasing trend of grain yield was obvious in this period and the fluctuation of meteorological yield was rather big. Based on the adaptation evaluation model, the adaptation level of grain production in this region has roughly experienced the change procedure from high to low to high as from 4 grade decreased to 1grade and after 1995 rised to 3grade again. With the change of regional climate condition and technical economic progress, the people taken constantly adjusting measures to cope with change, between which, the adaptation level has shown the different change in the levels with high and low. |
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