Knowledge Resource Center for Ecological Environment in Arid Area
| 河西内流干旱区气候变化与径流的时空耦合分析以黑河中上游地区为例 | |
| 其他题名 | Space-Time Coupling Analysis of Climate Change and Runoff in Hexi Inland Arid Region: A Case Study of Heihe River Valley in the Middle Region of Hexi Corridor |
| 柳景峰; 张勃 | |
| ISSN | 1007-7588 |
| 出版年 | 2008 |
| 卷号 | 30期号:7页码:1105-1114 |
| 中文摘要 | 基于ArcGIS平台的地统计Kriging插值方法,分析了黑河上中游25个气象和水文站点1956年～2000年逐月气温、降水、蒸发和径流资料,并且空间化显示了各年代间的气温、降水和蒸发的变化幅度,结果表明:本区域气温和降水的变化及由此引起的蒸发和径流的变化具有时间和空间上的差异性,反映了大气环流、地形、下垫面因素和径流变化的时空耦合性.60年代～70年代开始整体升温,70年代以来80年代和90年代气温上升最为典型,高山湿润半湿润区气温升高约为0.5℃～0.6℃,平原荒漠区升温一般高于0.5℃,同期中西部山区降水增加,50年代～60年代之间西北部降水增加、中部小幅减少,60年代～70年代上中游绝大部分地方的降水增加.70年代～80年代除北山迎风坡降水增加较少外,其它地方降水均增加较多,80年代～90年代降水的变率呈现出由西向东规律性递减的趋势.另外,径流形成主要受到山区降水的影响,但冬季气温的上升会将融雪期提前,增加冬季流量,影响流域的春季径流.上游降水量和径流增幅比较接近,体现出时间上的一致性和空间上的拟合性.径流和降水的变化系数分别为1.3444和1.4823.平原大面积的人工绿洲区升温幅度较低,在0.3℃～0.5℃,与局地下垫面即绿洲的小气候效应有关. |
| 英文摘要 | Based on the technology of ArcGIS and kriging insert-value means of geo-statistic method, the temperature date, precipitation,evaporation and runoff date of 25 weather and hydrological stations in recent 50 years have been analyzed, and the inter-decadal change scope of temperature, precipitation,evaporation and runoff have been showed that are visible.the result show that the changes of temperature,evaporation,precipitation and runoff differed in different areas and decades,reflects the space-time coupling function of atmosphere-circumfluence-terrain and land situation: air temperature have raised entirely from 1960s in the study areas and raised typically in 1980s and 1990s with mountain areas raised about 0.5～0.6℃ and plain-hungriness areas above 0.5℃,mwanwhile,the precipitation of west and middle area of this region that affected by west wind had increased, the precipitation of the northwest part raised by 1.5% between 1950s and 1960s and the middle part reduced about -1%,and showed a otherness lie in the direction of northwest-southeast, and the precipitation raised in the mountain and west wind affected areas in 1960s and 1970s, and start from 1980s the west part raised and east part reduced. Affected by the space otherness of temperature and precipitation, the runoff of the west part increased from 1990s but the east part not increased even reduced.The formation of runoff are more reliable in precipitation than air temperature, but the temperature arise in winter may make the ice melt became earlier and increase runoff in spring. The changes of precipitation and runoff in upper valley showed coherence very well with the variation coefficient of runoff 1.3444 and precipitation 1.4823.The air temperature caused more evaporation in plain areas than that of mountain areas with the stations that lies in plain have higher correlation coefficients of evaporation and air temperature. Besides, the temperature in man-made oasis plain areas raised lower about 0.3～0.5℃ with the influence of the microclimate effect caused by the oasis. |
| 中文关键词 | 干旱区 ; 气候变化 ; 径流 ; 时空耦合 ; 黑河流域 |
| 英文关键词 | Arid area climate change Runoff Space-time coupling function Heihe river valley |
| 语种 | 中文 |
| 国家 | 中国 |
| 收录类别 | CSCD |
| WOS类目 | GEOSCIENCES MULTIDISCIPLINARY |
| WOS研究方向 | Geology |
| CSCD记录号 | CSCD:3340164 |
| 来源机构 | 西北师范大学 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/223235 |
| 作者单位 | 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国 |
| 推荐引用方式 GB/T 7714 | 柳景峰,张勃. 河西内流干旱区气候变化与径流的时空耦合分析以黑河中上游地区为例[J]. 西北师范大学,2008,30(7):1105-1114. |
| APA | 柳景峰,&张勃.(2008).河西内流干旱区气候变化与径流的时空耦合分析以黑河中上游地区为例.,30(7),1105-1114. |
| MLA | 柳景峰,et al."河西内流干旱区气候变化与径流的时空耦合分析以黑河中上游地区为例".30.7(2008):1105-1114. |
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