地理学报 ›› 2011, Vol. 66 ›› Issue (9): 1230-1238.doi: 10.11821/xb201109008

• 水文研究 • 上一篇    下一篇

基于遥感和SEBAL模型的塔里木河干流区蒸散发估算

李宝富1,2, 陈亚宁1, 李卫红1, 曹志超1,2   

  1. 1. 中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室, 乌鲁木齐 830011;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2011-05-16 修回日期:2011-06-29 出版日期:2011-09-20 发布日期:2011-11-04
  • 通讯作者: 陈亚宁(1958-), 男, 研究员, 博士生导师, 中国地理学会会员(S110004398M), 主要从事干旱区生态水文过程研究。E-mail: chenyn@ms.xjb.ac.cn E-mail:chenyn@ms.xjb.ac.cn
  • 作者简介:李宝富(1983-), 男, 山东临沂人, 博士研究生, 主要从事遥感应用与生态水文研究。E-mail: lbf0102@sohu.com
  • 基金资助:

    国家重点基础研究发展计划(973 计划) 项目(2010CB951003);国家自然科学基金项目(40871059 和40901061)

Remote Sensing and the SEBAL Model for Estimating Evapotranspiration in the Tarim River

LI Baofu1,2, CHEN Yaning1, LIWeihong1, CAO Zhichao1,2   

  1. 1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-05-16 Revised:2011-06-29 Online:2011-09-20 Published:2011-11-04
  • Supported by:

    National Basic Research Program of China (973 Program), No.2010CB951003;National Natural Science Foundation of China, No.40871059,40901061

摘要: 运用1985 年、2000 年和2010 年遥感资料与SEBAL 模型估算了塔里木河干流区蒸散发。结果表明:该区蒸散发量较大,介于0~5.11 mm/d之间;靠近河道区蒸散发明显大于远离河道区;各土地利用/覆被类型蒸散发大小依次为:水体> 耕地> 林地> 草地> 未利用地> 居工地,主要与其植被覆盖度和水分供给条件有关;而日总蒸散发大小顺序为:草地> 未利用地> 耕地> 林地> 水体> 居工地,这与各土地利用/覆被类型面积密切相关。在1985-2010 年间,塔里木河干流区日总蒸散发量先减小后增大;上游平均日总蒸散发量为中游和下游的1.27 倍和1.42 倍。2000 年塔里木河干流区日总蒸散发比1985 年减少了6.80×104 m3,原因是中游和下游日总蒸散发减小,而上游日总蒸散发量却增加了3.02×105 m3。2010 年干流区日总蒸散发比2000 年高6.78×105 m3,其中上游和中游日总蒸散发量增加了1.19×106 m3,而下游却降低了5.16×105 m3,主要受中上游地区绿洲耕地面积扩张,水资源开发量过大,下游来水量减少的影响。

关键词: 遥感, SEBAL, 蒸散发, 塔里木河

Abstract: The paper estimates evapotranspiration of the mainstream by using remote sensing data in 1985, 2000, and 2010 respectively and SEBAL model in the mainstream of Tarim River. The results show that evapotranspiration in the area ranges from 0 to 5.11 mm /d; the evapotranspiration of the area close to the river was significantly higher than the area away from the river; the land use types asSociated with evapotranspiration are listed in the order of water bodies > farmland > woodland > grassland > unused land > home-work sites, which is mainly related to its vegetation coverage and water supply; the total daily evapotranspiration islisted in the order of grassland > unused land > farmland > forestland > water bodies > home-work sites, which are closely related to the land use types. During 1985-2010, the total daily evapotranspiration in the Tarim River basin decreased firstly and then increased; the average total daily evapotranspiration in the upstream is 1.27 times that of the middle-stream and is 1.42 times that of the lower-stream. The total evapotranspiration in the Tarim River basin in 2000 decreased by 6.80×104 m3 compared with in 1985, because the total daily evapotranspiration in the middle and lower reaches decreased while the upper reaches increased by 3.02×105 m3. The total daily evapotranspiration in the mainstream of the river in 2010 is 6.78×105 m3 higher than that in 2000, with the upper and middle reaches up by 1.19×106 m3 and the lower reach down by 5.16 × 105 m3, which is mainly due to the fact that rapid expansion of cultivated land and excessive exploitation of water resources in the middle and upper reaches resulted from water decrease in the downstream.

Key words: remote sensing, SEBAL, evapotranspiration, Tarim River