干旱区生态环境知识资源中心(Arid): 西北干旱区遥感ET与潜在ET对气候变化的响应--以甘南草原区域为例

Arid

	西北干旱区遥感ET与潜在ET对气候变化的响应--以甘南草原区域为例
其他题名	Remote sensing ET and potential ET response to climate change in arid grassland:a case study of South Gansu, China
	刘春雨 1; 董晓峰 1; 刘英英 2
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2014
卷号	50 期号:2 页码:194-199,207
中文摘要	使用MODIS数据及相关气象数据,采用能量平衡方程,对甘南草原区域2000年、2009年7月份日均遥感ET 进行了反演,同时采用修正的Penman-Monteith模型模拟了该区域的日均潜在ET,并根据西北干旱区55年的气温变化,分析该区域的遥感E T和潜在E T的发展趋势.研究表明:2000年的遥感E T为0.9816~8.2081 mm,平均5.5141 mm.2009年的遥感E T为1.6472~7.6537 mm,平均5.5650 mm;而2009年潜在E T为1.6789~8.2487 mm,平均6.1581 mm,总体上遥感E T比潜在E T低.然而,在合作、洮河及铁坝乡附近,遥感ET 比潜在ET 高,说明研究区存在蒸发悖反现象,这与西北干旱区气温一直呈增长趋势有关.其中,1965年、1982年、1995年的气温比1957-1998年的平均气温分别增加了6.70%,11.69%,7.70%,尤其是2010年比1957-1998年的平均气温增加了57.56%,达到了5.77 °C,表明近期气温迅速升高.
英文摘要	The spatial distribution ET in Gannan grassland was simulated with the energy balance equation and series data sets of data (MODIS and meteorological) from 2000 and 2009. At the same time, the utilization of a modified Penman-Monteith Model simulated the regions average daily potential ET. In accordance with the 55-year temperature changes in the Northwest Arid Region of China, the regions development tendency of remote sensing ET and potential ET were analyzed. It was concluded that the remote sensing ET ranged from 0.981 6 mm to 8.208 1 mm, with a mean value of 5.514 1 mm in 2000. Remote sensing ET ranged from 1.647 2 mm to 7.653 7 mm with a mean value of 5.565 0 mm and potential ET ranged from 1.678 9 mm to 8.248 7 mm with a mean value of 6.158 1 mm in 2009. Remote sensing ET was lower than the potential ET in general. However, remote sensing ET was higher than the potential ET in the Hezuo County, along the Taohe River and around Tieba Township. It explained that there existed a contradiction in the evaporation phenomenon, which was related to the increasing temperature trend of Northwest China. For example, the temperature of 1965, 1982and 1995 increased 6.70%, 11.69% and 7.70% higher than the average of 1957-1998. In particular, the annual temperature of 2010 increased by 57.56%, and its average temperature was 5.77 higher than the average tem- perature of 1957-1998; that is to say, temperature rapidly increased in recent years.
中文关键词	遥感ET ; 潜在ET ; 气候变化 ; 西北干旱区
英文关键词	remote sensing ET potential ET climate change Northwest China Arid Area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:5299624
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231415
作者单位	1.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国; 2.兰州大学西部环境与气候变化研究院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘春雨,董晓峰,刘英英. 西北干旱区遥感ET与潜在ET对气候变化的响应--以甘南草原区域为例[J]. 兰州大学,2014,50(2):194-199,207.
APA	刘春雨,董晓峰,&刘英英.(2014).西北干旱区遥感ET与潜在ET对气候变化的响应--以甘南草原区域为例.兰州大学学报. 自然科学版,50(2),194-199,207.
MLA	刘春雨,et al."西北干旱区遥感ET与潜在ET对气候变化的响应--以甘南草原区域为例".兰州大学学报. 自然科学版 50.2(2014):194-199,207.