| 关中平原东、中、西部气候干旱化程度比较分析 |
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| 引用本文： | 李俊霖,延军平,孙虎,徐小玲,赵德芳.关中平原东、中、西部气候干旱化程度比较分析[J].干旱区资源与环境,2005,19(1):131-134. |
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| 作者姓名： | 李俊霖 延军平 孙虎 徐小玲 赵德芳 |
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| 作者单位： | 陕西师范大学旅游与环境学院,陕西,西安,710062 |
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| 基金项目： | 国家自然科学基金项目”全球变化下秦岭南北环境脆弱程度的比较研究”(4 0 0 710 0 5 )资助 |
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| 摘 要： | 根据关中地区宝鸡、咸阳、西安和渭南四市的 38个气象站点的 1 95 7- 2 0 0 0年降水量的测量纪录 ,将关中地区东、中、西三个部分春、夏、秋、冬四个季节进行降水变化分析。结果表明 ,关中平原降水量最多的夏季有逐年缓慢增加的趋势 ,秋季降水量以每年 1 .5mm的较大幅度减少 ,对关中降水减少贡献最大。特别是秋季降水变化以 1 987年为界 ,1 987年以前变化很极端 ,1 987年以后变化趋于缓和 ,并且少雨年越来越多。关中地区在未来几年干旱化明显 ,其中关中西部对关中年降水量减少的贡献最大。而关中中部和东部地区大陆性气候有强化趋势。
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| 关 键 词： | 降水变化 干旱化 大陆性气候 关中平原 |
| 文章编号： | 1003-7578(2005)01-131-04 |
| 修稿时间： | 2003年12月8日 |
An Analysis on Climatic Changes in East, Middle and West Areas of Guanzhong Plain |
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| LI Jun-linYAN Jun-pingSUN HuXu Xiao-lingZhao De-fang.An Analysis on Climatic Changes in East, Middle and West Areas of Guanzhong Plain[J].Journal of Arid Land Resources and Environment,2005,19(1):131-134. |
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| Authors: | LI Jun-linYAN Jun-pingSUN HuXu Xiao-lingZhao De-fang |
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| Abstract: | Based on the Precipitationdata of Guanzhong Plain up to 2000(nearly 44 year time scales),the rainfall changes in the three parts of Guanzhong Plain and four seasons were analyzed in this paper.This study covered the area of the Guanzhong Plain,including Baoji,Xi’an,Xianyang and Weinan cities.It was found that the rainfall had increased slowly in spring and decreased in autumn rapidly.Before 1987,the rain fall changed sharply in autumn and on the contrary after 1987.Furthermore,the climate was becoming more arid in the West of Guanzhong Plain,and the continental climate was becoming more strong in the East of Guanzhong Plain. |
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| Keywords: | rainfall change aridity continental climate Guanzhong Plain |
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