|
|||||
|
|
| 秦岭西部地区近41年来气候变化特征 | |
| 引用本文： | 娄雪冬,康冰,胡理乐.秦岭西部地区近41年来气候变化特征[J].安徽农业科学,2013(17):7609-7613,7648. |
| 作者姓名： | 娄雪冬 康冰 胡理乐 |
| 作者单位： | 1. 中国环境科学研究院,北京100012;西北农林科技大学,陕西杨凌712100 2. 西北农林科技大学,陕西杨凌,712100 3. 中国环境科学研究院,北京,100012 |
| 基金项目： | 中央级公益性科研院所基本科研业务专项 |
| 摘 要： | 目的]研究秦岭西部地区近41年来的气候变化特征。方法]根据秦岭西部17个气象站1967~2007年间观测数据,分析了秦岭西部近41年来的气候变化特征。结果]过去41年间,秦岭西部的平均气温增幅为0.30℃/10a(P0.000 1);四季平均气温均呈显著上升趋势,冬季增温速率最大(0.42℃/10a)。年平均月极端最高气温上升趋势显著(0.31℃/10a,P0.05),冬季平均月极端最高气温上升最快(0.54℃/10a,P0.05);年平均月极端最低气温上升趋势显著(0.36℃/10a,P0.05),夏季平均月极端最低气温上升最快(0.45℃/10a,P0.005)。41年间平均年降水量为802 mm,变化趋势不显著,但春季降水量显著下降(-13.68 mm/10a,P0.05);年日照时数和年相对湿度呈下降趋势,但变化趋势不显著,平均年日照时数为1 864 h;年蒸发量呈增加趋势,但变化趋势不显著。从地域差异上看,年平均气温、年降水量和年相对湿度都呈现由南部向北部地区递减的趋势,年日照时数和年蒸发量则呈现由南部向北部地区递增的趋势。结论]该研究可为秦岭西部地区生态系统的稳定及相关研究提供参考依据。 |
| 关 键 词： | 秦岭西部 温度 降水 日照时数 相对湿度 蒸发量 |
Characteristics of Climate Change in Western Mts.Qinling during Last 41 Years |
|
| Institution: | LOU Xue-dong;Chinese Research Academy of Environmental Sciences; |
| Abstract: | Abstract Objective] The research aimed to study climate change characteristics in w~stern Mts. Qinling during last 4l years. Method] Based on the data of air temperature, precipitation, sunshine hours, relative humidity and evaporation from seventeen weather stations during 1967 -2007 in western Mts. Qinling,we analyzed the characteristics of climate change in western Mts. Qinling during last 41 years. Result] Annnal mean air temperature significantly increased by 0.30 ~C/10 a during the past 41 years （P 〈0. 000 1 ）. The increasing trend of mean air temperature ap- peared in all four seasons ,and it was the fastest in winter （0.42 ~C/10 a,P 〈0. 000 1 ）. Annual mean monthly maximum air temperature signifi- cantly increased by 0.31 ~C/10 a （P 〈 0.05 ）, and increasing rate was the highest in winter （0.54 ~C/10 a, P 〈 0.05 ）. Annual mean monthly minimum air temperature significantly increased by 0.36 ~C/10 a （P 〈 0.05 ）, and increasing rate was the highest in su mmer （0.45 ~C/10 a,P 〈 0.05 ）. Annual precipitation averaged 802 mm and varied non-significantly during 41 years, but precipitation in spring decreased significantly by 13.68 mm/10 a. Annual sunshine duration averaged 1 864 h during 41 years. Annual sunshine duration and annual mean relative humidity both decreased non-significantly. In contrast, annual evaporation increased non-significantly. Compared among south, center and north areas： of the west- ern Mts. Qinling,annual mean temperature,annual precipitation and annual relative humidity showed decreasing trend from southern to northern areas,while annual sunshine hours and annual evaporation showed increasing trend from southern to northern areas. Conclusion] The research could nrovide reference basis for ecosvstem stability and related research. |
| Keywords: | Western Mts Qinling Temperature Precipitation Sunshine duration Relative humidity Evaporation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |