干旱区生态环境知识资源中心(Arid): 甘肃黄土高原区潜在蒸散量时空变化与成因研究

Arid

	甘肃黄土高原区潜在蒸散量时空变化与成因研究
其他题名	Study on Temporal and Spatial Changes of the Potential Evapotranspiration and Its Impact Factors in Loess Plateau of Gansu Province
	卓玛兰草; 刘普幸; 张亚宁; 王洪岩; 曹立国
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2012
卷号	19 期号:1 页码:70-75
中文摘要	基于甘肃黄土高原区12个气象站点1960-2008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，分析了其潜在蒸散量的时空变化及其影响因子。结果表明：近49a来，陇中北部冷温带半干旱区和陇中南部冷温带半湿润区的潜在蒸散量均呈上升趋势。在四季中，潜在蒸散量的值夏季最大，春秋季次之，冬季最小。潜在蒸散量空间差异显著，潜在蒸散量的值表现为自北向南递减，其中最大值在景泰为1 105.82mm，最小值在岷县为772.31mm。相关分析表明，研究区年均潜在蒸散量所受气候因子的影响不尽相同，其中，陇中北部冷温带半干旱区为太阳总辐射和日照时数，而陇中南部冷温带半湿润区为太阳总辐射和最高气温。辐射项主要受太阳总辐射和最高气温影响，动力项主要受风速影响，辐射项的值都远大于动力项。不同气候区辐射项均呈上升趋势，但动力项有所不同，在陇中北部冷温带半干旱区呈下降趋势，斜率为-0.631mm/a，在陇中南部冷温带半湿润区呈上升趋势，斜率为0.415mm/a。
英文摘要	Based on the daily temperature,precipitation,wind speed,sunshine hours,total solar radiation and related humidity date of the 12 meteorological stations of Loess Plateau region in Gansu Province from 1960 to 2008,Potential Evapotranspiration(ET0) were estimated by the methods of Penman-Monteith model in different climate regions and the temporal-spatial variations of ET0 were analyzed by using Kriging interpolation.The results indicated that the trends of ET0 in semi-arid region of the northern Longzhong and the semi-humid region of the southern Longzhong are increasing.In four seasons,summer ET0 was maximum,autumn and spring ones were the second place,winter ET0 was minimum.ET0 had the characteristics of remarkable spatial variations,such as decreasing from north to south,the maximum of ET0 was 1 105.82 mm in Jingtai,while the minimum of ET0 was 772.31 mm in Minxian.Correlation analysis indicated that ET0 was affected by diverse climatic factors in different climate regions of study area.The ET0 of semi-arid region in the northern Longzhong was mainly affected by total solar radiation and sunshine hours,while the ET0 of semi-humid region of the southern Longzhon was mainly controlled by total solar radiation and the highest temperature.ETrad was mainly affected by total solar radiation and the highest temperature.The key factor for influencing the ETaero was the wind speed of all,ETrad>ETaero.In different climatic regions,ETrad change trends of ET0 is increasing,but ETaero are different.The change trends of ET0 of semi-arid region in the northern Longzhong is-0.631 mm/a,it was 0.415 mm/a for the semi-humid region in the southern Longzhong.
中文关键词	气候变化 ; 潜在蒸散量 ; Penman-Monteith模型 ; 影响因子 ; 黄土高原
英文关键词	climate change potential evapotranspiration(ET0) Penman-Monteith model impact factor the Loess Plateau
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:4463286
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/2XILL650/228611
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	卓玛兰草,刘普幸,张亚宁,等. 甘肃黄土高原区潜在蒸散量时空变化与成因研究[J]. 西北师范大学,2012,19(1):70-75.
APA	卓玛兰草,刘普幸,张亚宁,王洪岩,&曹立国.(2012).甘肃黄土高原区潜在蒸散量时空变化与成因研究.水土保持研究,19(1),70-75.
MLA	卓玛兰草,et al."甘肃黄土高原区潜在蒸散量时空变化与成因研究".水土保持研究 19.1(2012):70-75.