| 黄土高原陆地表层最大可能蒸散量的变化特征 |
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| 引用本文： | 姚玉璧,王润元,杨金虎,岳平,陆登荣,肖国举,王洋,刘林春.黄土高原陆地表层最大可能蒸散量的变化特征[J].生态环境,2011(Z2). |
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| 作者姓名： | 姚玉璧 王润元 杨金虎 岳平 陆登荣 肖国举 王洋 刘林春 |
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| 作者单位： | 中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室;甘肃省定西市气象局;甘肃省气象信息中心;宁夏大学新技术应用研究开发中心; |
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| 基金项目： | 国家公益性行业(气象)科研专项(GYHY201106029、GYHY200806021); 国家自然科学基金重点项目(40830957); 中国气象局气候变化专项(280200S011C00); 甘肃省气象局第五批“十人计划”项目; 干旱气象科学研究基金项目(IAM200904、IAM200913) |
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| 摘 要： | 基于黄土高原1961—2008年月平均气温、最高气温、最低气温、相对湿度、降水量、风速和日照百分率等气候要素资料,应用修订的Penman-Monteith(P-M)模型计算了最大可能蒸散量,分析其时空分布、异常分布特征和次区域时间演变特征。结果表明:1961—2008年间,黄土高原最大可能蒸散量多年平均在400~800 mm之间,大部分区域650~750 mm之间。一致性异常分布是黄土高原最大可能蒸散量的最主要空间模态。黄土高原最大可能蒸散量的异常空间分布可分为以下3个关键区:高原西北部区、高原东北部区和高原东南部区。高原西北部区域最大可能蒸散量呈显著增加趋势,且发生了突变现象;高原东北部区域最大可能蒸散量呈显著下降的趋势,也发生了突变;而高原东南部区域下降趋势不显著,未发生突变。黄土高原最大可能蒸散量的3个空间分区中,3 a的周期振荡表现得比较显著。
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| 关 键 词： | 最大可能蒸散量 空间分布 时间演变 黄土高原 |
Change of terrestrial surface potential evapotranspiration in Loess Plateau |
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| YAO Yubi,WANG Runyuan,YANG Jinhu,YUE Ping,LU Dengrong,XIAO Guoju,WANG Yang,LIU Linchun .China Meteorological Administration Key Laboratory of Arid Climate Change , Reducing Disaster,Gansu Province Key Laboratory of Arid Climate Change , Reducing Disaster,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou ,China,.Meteorological Bureau of Dingxi City,Dingxi ,.Gansu Meteorological Information Center,.New Technology Applicat....Change of terrestrial surface potential evapotranspiration in Loess Plateau[J].Ecology and Environmnet,2011(Z2). |
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| Authors: | YAO Yubi WANG Runyuan YANG Jinhu YUE Ping LU Dengrong XIAO Guoju WANG Yang LIU Linchun China Meteorological Administration Key Laboratory of Arid Climate Change Reducing Disaster Gansu Province Key Laboratory of Arid Climate Change Reducing Disaster Lanzhou Institute of Arid Meteorology China Meteorological Administration Lanzhou China Meteorological Bureau of Dingxi City Dingxi Gansu Meteorological Information Center New Technology Applicat |
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| Affiliation: | YAO Yubi1,2,WANG Runyuan1,YANG Jinhu2,YUE Ping1,LU Dengrong3,XIAO Guoju4,WANG Yang2,LIU Linchun2 1.China Meteorological Administration Key Laboratory of Arid Climate Change and Reducing Disaster,Gansu Province Key Laboratory of Arid Climate Change and Reducing Disaster,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou 730020,China,2.Meteorological Bureau of Dingxi City,Dingxi 743000,3.Gansu Meteorological Information Center,4.New Technology Applicat... |
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| Abstract: | On the basis of climatic observational data of monthly average temperature,maximum temperature,minimum temperature,relative humidity,precipitation,wind speed and sunshine duration in Loess plateau from 1961 to 2008,the potential evapotranspiration was computed by using revised Penman-Monteith Model.The temporal-spatial distribution,anomaly distribution and sub-regional temporal variations of the potential evapotranspiration were analyzed as well.The results show that the annual average potential evapotransp... |
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| Keywords: | potential evapotranspiration spatial distribution temporal variation Loess plateau |
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