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| 塔里木河流域中下游胡杨典型叶片光谱响应特征 | |
| 引用本文： | 肖正清,王树东,古丽·加帕尔,赵金,常存,马忠国.塔里木河流域中下游胡杨典型叶片光谱响应特征[J].干旱区地理,2007,30(5):680-687. |
| 作者姓名： | 肖正清 王树东 古丽·加帕尔 赵金 常存 马忠国 |
| 作者单位： | 1. 北京师范大学资源学院,北京,100875 2. 北京师范大学地理学与遥感科学学院,北京,100875;中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011 3. 中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011 |
| 基金项目： | 国家重大工程项目“塔里木河水量调度系统建设”(国家重点基础发展计划资助(2007CB714403) |
| 摘 要： | 光谱的研究是遥感模型构建的基础和前提。由于塔里木河两岸横向与纵向生态供水的差别,导致胡杨的生存环境有所差别。为了研究胡杨叶片是否对环境具有标识作用,选择中下游的5个实验点胡杨典型叶片作为研究对象,研究结果表明:①同一实验点不同树龄叶片在近红外和短波红外波段差异明显,而不同实验点不同树龄叶片光谱在波段1 270~1 290 nm和1 600 nm附近可以进行有效区分;而且随着距河道垂直向距离的增加"红边"呈"蓝移"趋势;②不同断面、不同实验点叶片在825 nm,1 270 nm和1 605 nm光谱差异较大,红边由中游到下游呈"蓝移"趋势;初变黄的叶片随着水分的流失光谱曲线在各波段有增大的趋势,当水分流失减速时,光谱曲线在400~1 000 nm之间时变化仍较明显。综上,胡杨叶片光谱具有可分性,对生存环境能够起到标识作用。 |
| 关 键 词： | 塔里木河中下游 胡杨 典型叶片 环境变化 光谱响应 |
| 文章编号： | 1000-6060(2007)05-0680-08 |
| 收稿时间： | 2006-12-27 |
| 修稿时间： | 2007-04-05 |
Spectral response to representative leaves of Populus euphratica Oliver in middle and lower course of Tarim river basin |
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| XIAO Zheng-qing,WANG Shu-dong,GULI Japper,ZHAO Jin,CHANG Cun,MA Zhong-guo.Spectral response to representative leaves of Populus euphratica Oliver in middle and lower course of Tarim river basin[J].Arid Land Geography,2007,30(5):680-687. | |
| Authors: | XIAO Zheng-qing WANG Shu-dong GULI Japper ZHAO Jin CHANG Cun MA Zhong-guo |
| Abstract: | Spectral acquisition and analysis provides precondition and basis for remote sensing model.Differece of undergroundwater level of tarim river causes various living environment of Populus euphratica Oliver from middle to lower course.For the research on spectral response to living evironment,representative leaves of Populus euphratica Oliver of five experiment sites were selected as objects of research in middle and lower course of Tarim river basin.Some conclusions were got from the result of the experiment as follows: Various age Populus euphratica Oliver were easy to differed from spectral reflectance in near and short wave infrared band in same site,may be differed well in the band 1 270-1 290 nm and near the band 1 600 nm;may be differed more well in the band 700-1 650 nm and the "Red Edge" has the tendency toward blue waveband from middle to lower course in various sites of same ecology profile;may be differed well in the band 825 nm,1 270 nm and 1 605 nm, and the "Red Edge" has the tendency toward blue waveband from middle to lower course in various sites of various ecology profiles;spectrum of the becoming wilting leaves changes more obviously in the band 400-1 000 nm.In short,the experiment result proved that leaves of Populus euphratica Oliver in various living evironment may be differed by their spectrums,and these spectrums would play a role in identification. |
| Keywords: | Populus euphratica Oliver middle and lower course of the Tarin River representative leaves environmental change spectral response |
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