| Analysis of climate variability in ten-day scale during crop growing season and its effect on crop yield in Huangfuehuan Basin of Inner Mongolia |
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| DOI：10.7606/j.issn.1000-7601.2012.03.33 |
| Key Words: climate change coefficient of variability climatie yield fluctuation index Huangfuehuan basin |
| Author Name | Affiliation | | SUN Tesheng | State Key Laboratory of Earth Surface Processes and Resources Ecology， College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China | | LI Bo | State Key Laboratory of Earth Surface Processes and Resources Ecology， College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China | | ZHANG Xinshi | State Key Laboratory of Earth Surface Processes and Resources Ecology， College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
Laboratory of Quantitative Vegeiation Ecology, lnstitue of Botany, Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: |
| Huangfuchuan basin belongs to semiarid region in northern China, where crop production has a signifi-cant vulnerability owing to climate change. Precipitation and temperature data during the growing season, crop acreage and production data from 1961-2000 in Huangfuchuan basin are used to analyze the response of crop production to pre-cipitation CV and temperature CV.The results show that, excluding the impact of socio-economic factors, the response of crop production to ten-day precipitation CV and temperature CV is significant, but for different crops and ten-days, the
response is different; During the first ten days of August, the abundance of rainfall has signifieant positive effect on climatic yield of main crops such as broomcorn millet, corn, potato, millet etc, while during the last ten days of June and the first ten days of July, the amount of precipitation has decisive impact on climatic yield of sorghum;The climatic yield of main crops may reduce if the maximum temperature during the middle ten days of May, and the mean, minimum and maximum temperature of all days during July and August rise. Therefore, it is particularly important and necessary to improve the ecological environment, especially strengthening dry-zone field management during the growing season(mainly July and August)and to reduce the sensitivity of agrieultural production to climate change. |
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