| 近50年来东北地区降水的时空分异研究 |
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| 引用本文： | 唐蕴,王浩,严登华,王水生.近50年来东北地区降水的时空分异研究[J].地理科学,2005,25(2):172-176. |
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| 作者姓名： | 唐蕴 王浩 严登华 王水生 |
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| 作者单位： | 中国水利水电科学研究院水资源研究所,北京,100014;新疆水利水电勘测设计研究院水资源规划所,新疆,乌鲁木齐,830000 |
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| 基金项目： | 水利部“东北水资源配置模型研究”。 |
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| 摘 要： | 以ARCGIS8．3为关键数据处理平台，通过编制相关AML程序，对东北地区近50年来(1951～2000年)降水的时空分异特征进行了分析。东北区多年平均降水量为489mm，从东南向西北递减，多年平均东部区、中部区和西部区的降水分别为635mm，481mm，355mm。整体上看，东北区降水还有显著的周期性，东部区和西部区的降水周期均为11年，中部为32年。东北区降水整体上呈现下降趋势，但下降趋势不明显。
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| 关 键 词： | 东北地区 降水 地理信息系统 周期性 趋势性 |
| 文章编号： | 1000-0690(2005)02-0172-05 |
Research on the Spatial-Temporal Differentiation of Precipitation in Northeast China in Recent 50 Years |
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| TANG Yun,WANG Hao,YAN Deng-hua,WANG Shui-sheng.Research on the Spatial-Temporal Differentiation of Precipitation in Northeast China in Recent 50 Years[J].Scientia Geographica Sinica,2005,25(2):172-176. |
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| Authors: | TANG Yun WANG Hao YAN Deng-hua WANG Shui-sheng |
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| Abstract: | By applying ARCGIS8.3 as a key data processing platform, this paper analyzes the spatial-temporal differentiation of precipitation within a duration of 50 years (1951 -2000) in Northeast China. The mean annual precipitation in Northeast China is 489mm, successively decreasing from southeast area to northwest area, which is 635mm, 481mm, and 355mm, respectively, in the east, central, and west regions. Another prominent feature of precipitation in Northeast China is its periodicals, with a period of 11 years in the east and west area, and 32 years in the central area. |
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| Keywords: | Northeast China precipitation GIS periodicals trend |
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