干旱区生态环境知识资源中心(Arid): 甘肃省19602008年潜在蒸散量时空变化及其影响因子

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	甘肃省19602008年潜在蒸散量时空变化及其影响因子
其他题名	Temporal and Spatial Change of the Potential Evaporation and Its Impact Factors in Gansu Province
	刘普幸; 卓玛兰草
来源期刊	自然资源学报
ISSN	1000-3037
出版年	2012
卷号	27 期号:9 页码:1561-1571
中文摘要	基于甘肃省27个气象站点19602008年逐日气温、降水、风速、日照时数、太阳总辐射和相对湿度数据,应用Penman-Monteith模型和Kriging插值法,分析其潜在蒸散量的时空变化及其影响因子。结果表明:近49 a来,甘肃省不同气候区年均潜在蒸散量变化除河西走廊外均呈上升趋势,并以甘南高寒湿润区上升最显著,变化率为10.36mm/10a(alpha=0.001);在四季变化中,夏季最大,春秋次之,冬季最小,各气候区变化趋势有别。潜在蒸散量空间差异显著,表现为自西北向东南递减,且甘南高原最小,河西暖温带最大。河西、陇南、陇中、甘南及祁连山区年均潜在蒸散量分别与平均风速、太阳总辐射和最高气温正相关最显著,典型站点与之一致,且辐射项主要受太阳辐射影响,动力项主要受风速影响。
英文摘要	Based on the daily temperature,precipitation,wind speed,sunshine hours,total solar radiation and related humidity data of the 27 weather stations of Gansu Province from 1960 to 2008,evapotranspiration(ET_0) was estimated with the methods of Penman-Monteith model and the temporal-spatial variation of ET_0 was analyzed by using Kriging interpolation in different climate regions of Gansu Province.The results indicated that ET_0 was different in different climate regions of Gansu and changing trends of ET0 were increasing except for Hexi Corridor.The changing trend of ET_0 was increasing most obviously in high-cold humid area of Gannan,the change rate was 10.36mm/10a(alpha=0.001).In four seasons,summer ET_0 was maximum,autumn and spring ones occupied the second place,and winter ET_0 was minimum.ET_0 had the characteristic of remarkable spatial variation,with the decreasing from northwest to southeast,with the smallest in Gannan plateau,while the biggest in the warm temperate zone of Hexi Corridor.But the changing trend was different in different climate regions of Gansu Province.There was remarkable positive correlation between the mean annual ET_0 and the annual mean wind speed,the annual total solar radiation,the annual mean highest temperature,respectively in the warm-temperate zone,cold-temperate zone,arid region of Hexi Corridor and Longnan humid region,semi-arid region of Longzhong,Gannan and Qilian mountainous regions of Gansu.Climatic influencing factors of the typical weather stations of each climate region were similar as those of the seven climate regions and the ET_(rad) was mainly impacted by the total solar radiation,while the ET_(aero) was affected by the wind speed.
中文关键词	气候变化 ; 潜在蒸散量 ; Penman-Monteith模型 ; 甘肃省
英文关键词	climate change evapotranspiration Penman-Monteith model Gansu Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4645979
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/2XILL650/229194
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	刘普幸,卓玛兰草. 甘肃省19602008年潜在蒸散量时空变化及其影响因子[J]. 西北师范大学,2012,27(9):1561-1571.
APA	刘普幸,&卓玛兰草.(2012).甘肃省19602008年潜在蒸散量时空变化及其影响因子.自然资源学报,27(9),1561-1571.
MLA	刘普幸,et al."甘肃省19602008年潜在蒸散量时空变化及其影响因子".自然资源学报 27.9(2012):1561-1571.