Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/01431160903283827 |
Multi-polarization Envisat-ASAR images as a function of leaf area index (LAI) of White Poplar and Desert Date plantations | |
Gao, Shuai1,2; Niu, Zheng1; Wu, Chaoyang1,2 | |
通讯作者 | Gao, Shuai |
来源期刊 | INTERNATIONAL JOURNAL OF REMOTE SENSING |
ISSN | 0143-1161 |
出版年 | 2010 |
卷号 | 31期号:4页码:1095-1102 |
英文摘要 | The relationship between leaf area index (LAI) of plantations and multi-polarization Synthetic Aperture Radar (SAR) data (Envisat-ASAR) was investigated for White Poplar (Populus tomentosa Carr) and Desert Date (Elaeagnus angustifolius) in Heihe district, northwest china. The study showed that, for homogeneous White Poplar plantations, HH and HV polarization data (where H and V represent horizontal and vertical polarizations, respectively, and the first of the two letters refers to the transmission polarization and the second to the received polarization) were sensitive to LAI and the r(2) (logistic relationship fits) values between HH polarization and LAI, 0.56 and 0.58 on 25 and 28 June images respectively, was much higher than that for the other polarizations of VV, VH and HV. For Desert Date plantations, the heterogeneity of the forests results in a more complex backscattering than that for White Poplar. Incidence angle also plays an important role in SAR backscattering, so a suitable SAR mode should be chosen to avoid scattering saturation when the LAI and incidence angle exceed certain values. The logistic polarization ratios of HH/HV and VV/VH showed varying correlation with LAI over White Poplar plantations, probably due to incidence angle. |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000275877800020 |
WOS关键词 | SCATTERING MODEL ; BOREAL FOREST ; VEGETATION |
WOS类目 | Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/164694 |
作者单位 | 1.Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Shuai,Niu, Zheng,Wu, Chaoyang. Multi-polarization Envisat-ASAR images as a function of leaf area index (LAI) of White Poplar and Desert Date plantations[J],2010,31(4):1095-1102. |
APA | Gao, Shuai,Niu, Zheng,&Wu, Chaoyang.(2010).Multi-polarization Envisat-ASAR images as a function of leaf area index (LAI) of White Poplar and Desert Date plantations.INTERNATIONAL JOURNAL OF REMOTE SENSING,31(4),1095-1102. |
MLA | Gao, Shuai,et al."Multi-polarization Envisat-ASAR images as a function of leaf area index (LAI) of White Poplar and Desert Date plantations".INTERNATIONAL JOURNAL OF REMOTE SENSING 31.4(2010):1095-1102. |
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