2000-2020年陕西榆林和汉中农业气温指标对比研究
1. 陕西省河流湿地生态与环境重点实验室, 陕西渭南 714099
2. 渭南师范学院, 环境与生命科学学院, 陕西渭南 714099
| 摘 要： | 为探索在全球气候变暖背景下陕西榆林和汉中地区气温的变化趋势及其对农作物生长的影响，对两地近20年负积温、有效积温、活动积温和各积温积累日数的变化趋势进行了分析，评价对农作物生长的影响。自2012年后，榆林、汉中两地各个气温要素均呈现增长趋势，且波动幅度减小；榆林自2012年后年最高气温以0.44°C/年的速率在增长，年最低气温呈明显上升趋势，汉中年最高气温和年最低气温整体均呈上升趋势；两地负积温积累量和负积温日数均呈现降低趋势，汉中有效积温、活动积温、无霜期和生长期较榆林呈现明显的增长趋势，有效积温最高达5958.8°C，活动积温最高达5390.8°C，并且活动积温正在以20.1°C/年的速率在增长。 |
| 关 键 词： | 气候变化; 活动积温; 生长期; 农业气温指标 |
| DOI： | 10.57237/j.earth.2025.01.002 |
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收稿日期: 2025-01-20
接受日期: 2025-03-04
在线出版日期: 2025-04-22
An Analysis on Agricultural Temperature Indicators in Yulin and Hanzhong of Shaanxi Province from 2000 to 2020
1. Key Laboratory for Eco-Environment of Multi-river Wetlands in Shaanxi Province, Weinan 714099, China
2. Department of Resources and Environment, Weinan Normal University, Weinan 714099, China
| Abstract: | In order to explore the change trend of temperature and its influence on crop growth in Yulin and Hanzhong areas of Shaanxi province under the background of global warming. The change trend of negative accumulated temperature, effective accumulated temperature, active accumulated temperature and accumulated days of each accumulated temperature in the two places in recent 20 years were analyzed, and the impact on crop growth was evaluated. Since 2012, all temperature elements in Yulin and Hanzhong show an increasing trend, and the fluctuation range has decreased. Since 2012, the annual maximum temperature in Yulin has been increasing at the rate of 0.44°C/year, and the annual minimum temperature has shown an obvious upward trend. The annual maximum temperature and annual minimum temperature in Hanzhong showed an increasing trend as a whole. The accumulated amount of negative accumulated temperature and the number of days of negative accumulated temperature in two places showed a downward trend. Compared with Yulin, the effective accumulated temperature, active accumulated temperature, frost-free period and growing season showed an obvious increasing trend. The highest effective accumulated temperature was 5958.8°C, the highest active accumulated temperature was 5390.8°C, and the active accumulated temperature was increasing at the rate of 20.1°C/year. |
| Keywords: | Climate Change; Active Accumulated Temperature; Growth Phase; Agricultural Temperature Index |
基金
| 1. | 陕西省教育厅创新团队项目 (基金号: 21JP041). |
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