干旱区生态环境知识资源中心(Arid): 基于SEBS模型和Landsat 8数据的黑河下游蒸散发时空特性分析

Arid

	基于SEBS模型和Landsat 8数据的黑河下游蒸散发时空特性分析
其他题名	Analysis of spatial-temporal characteristics of evapotranspiration in the lower reaches of Heihe River based on surface energy balance system model and Landsat 8 data
	金学杰; 周剑
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2017
卷号	39 期号:3 页码:572-582
中文摘要	对黑河下游地区蒸散发量的估算及其时空特性的研究,有助于进一步了解流域水循环,合理利用水资源,防止生态环境进一步恶化。利用SEBS模型估算了黑河下游额济纳绿洲2014年15天的日蒸散量,将SEBS估算的日蒸散与不同下垫面5个站点的EC实测值进行对比,其均方根误差和确定性系数分别为1.2 mm、0.85(5个站点),0.5 mm、0.96(2个站点),表明SEBS模型的结果是合理的,可以适用于黑河下游额济纳绿洲地区的地表蒸散量的估算。同时分析了黑河下游蒸散发的时空变化规律,结果表明,黑河下游额济纳绿洲地区,蒸散发在时间上存在明显的季节变化规律:夏季>春季>秋季>冬季;空间上呈现明显的沿河分布的趋势。不同土地覆被类型蒸散发有相似的季节变化特征,但其季节变化幅度并不相同,规律为:水体>耕地>灌丛地>草地>裸土地>沙地。
英文摘要	The studies of evapotranspiration (ET) estimate and the spatial and temporal characteristics in the lower reaches of the Heihe River help to further understand the hydrological cycle,the rational use of water resources, preventing further deterioration of the ecological environment. Using surface energy balance system (SEBS) model to estimate the 15-day ET in 2014 and comparing with the EC measured in five different underlying sites in Ejina Oasis,the root mean square error and determination coefficient were 1.2 mm,0.85 (in 5 sites) and 0.5 mm,0.964 (in 2 sites),which showed that SEBS model was reasonable and could be applied to estimate ET of Ejina oasis regions. At the same time,analyzing the spatial and temporal variation of ET in the lower reaches of Heihe River showed that ET of Ejina oasis had obvious seasonal variation in the rank of summer > spring > autumn > winter,and had significant spatial differential along the river trend. The ET on different land cover types had similar seasonal variation,but the seasonal variation rates were not the same,decreasing as follows: water > arable land > shrub land > grassland > bare land > sandy land.
中文关键词	蒸散发 ; Pearson相关系数 ; 能量平衡
英文关键词	SEBS Landsat 8 surface energy balance system(SEBS) Landsat 8 evapotranspiration Pearson correlation coefficient energy balance
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6068557
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235616
作者单位	中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	金学杰,周剑. 基于SEBS模型和Landsat 8数据的黑河下游蒸散发时空特性分析[J]. 中国科学院西北生态环境资源研究院,2017,39(3):572-582.
APA	金学杰,&周剑.(2017).基于SEBS模型和Landsat 8数据的黑河下游蒸散发时空特性分析.冰川冻土,39(3),572-582.
MLA	金学杰,et al."基于SEBS模型和Landsat 8数据的黑河下游蒸散发时空特性分析".冰川冻土 39.3(2017):572-582.