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题名:
An Integrated Use of Topography with RSI in Gully Mapping, Shandong Peninsula, China
作者: He, Fuhong1; Wang, Tao1; Gu, Lijuan2; Li, Tao3; Jiang, Weiguo4; Shao, HongBo(邵宏波)5,6
刊名: SCIENTIFIC WORLD JOURNAL
ISSN号: 1537-744X
出版日期: 2014
页码: 827124
关键词: SEDIMENT YIELD ; LOESS PLATEAU ; EROSION ; VARIABILITY ; THRESHOLD ; SYSTEM
学科分类: Multidisciplinary Sciences
DOI: 10.1155/2014/827124
产权排序: [He, Fuhong; Wang, Tao] Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China; [Gu, Lijuan] NAAU, Inst Syst Sci & Math, Yantai 264001, Peoples R China; [Li, Tao] Hubei Environm Sci Acad, Wuhan 430072, Peoples R China; [Jiang, Weiguo] Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Shao, Hongbo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China; [Shao, Hongbo] Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
通讯作者: Wang, T (reprint author), Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China. wt641@163.com ; shaohongbochu@126.com
作者部门: 海岸带生物学与生物资源利用所重点实验室
中文摘要: Taking the Quickbird optical satellite imagery of the small watershed of Beiyanzigou valley of Qixia city, Shandong province, as the study data, we proposed a new method by using a fused image of topography with remote sensing imagery (RSI) to achieve a high precision interpretation of gully edge lines. The technique first transformed remote sensing imagery into HSV color space from RGB color space. Then the slope threshold values of gully edge line and gully thalweg were gained through field survey and the slope data were segmented using thresholding, respectively. Based on the fused image in combination with gully thalweg thresholding vectors, the gully thalweg thresholding vectors were amended. Lastly, the gully edge line might be interpreted based on the amended gully thalweg vectors, fused image, gully edge line thresholding vectors, and slope data. A testing region was selected in the study area to assess the accuracy. Then accuracy assessment of the gully information interpreted by both interpreting remote sensing imagery only and the fused image was performed using the deviation, kappa coefficient, and overall accuracy of error matrix. Compared with interpreting remote sensing imagery only, the overall accuracy and kappa coefficient are increased by 24.080% and 264.364%, respectively. The average deviations of gully head and gully edge line are reduced by 60.448% and 67.406%, respectively. The test results show the thematic and the positional accuracy of gully interpreted by new method are significantly higher. Finally, the error sources for interpretation accuracy by the two methods were analyzed.
英文摘要: Taking the Quickbird optical satellite imagery of the small watershed of Beiyanzigou valley of Qixia city, Shandong province, as the study data, we proposed a new method by using a fused image of topography with remote sensing imagery (RSI) to achieve a high precision interpretation of gully edge lines. The technique first transformed remote sensing imagery into HSV color space from RGB color space. Then the slope threshold values of gully edge line and gully thalweg were gained through field survey and the slope data were segmented using thresholding, respectively. Based on the fused image in combination with gully thalweg thresholding vectors, the gully thalweg thresholding vectors were amended. Lastly, the gully edge line might be interpreted based on the amended gully thalweg vectors, fused image, gully edge line thresholding vectors, and slope data. A testing region was selected in the study area to assess the accuracy. Then accuracy assessment of the gully information interpreted by both interpreting remote sensing imagery only and the fused image was performed using the deviation, kappa coefficient, and overall accuracy of error matrix. Compared with interpreting remote sensing imagery only, the overall accuracy and kappa coefficient are increased by 24.080% and 264.364%, respectively. The average deviations of gully head and gully edge line are reduced by 60.448% and 67.406%, respectively. The test results show the thematic and the positional accuracy of gully interpreted by new method are significantly higher. Finally, the error sources for interpretation accuracy by the two methods were analyzed.
研究领域[WOS]: Science & Technology - Other Topics
项目资助者: Science & Technology - Other Topics
关键词[WOS]: SEDIMENT YIELD ; LOESS PLATEAU ; EROSION ; VARIABILITY ; THRESHOLD ; SYSTEM
文章类型: Article
收录类别: SCI
语种: 英语
WOS记录号: WOS:000343480500001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/8569
Appears in Collections:海岸带生物学与生物资源利用所重点实验室_期刊论文

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作者单位: 1.Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China
2.NAAU, Inst Syst Sci & Math, Yantai 264001, Peoples R China
3.Hubei Environm Sci Acad, Wuhan 430072, Peoples R China
4.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China
6.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

Recommended Citation:
He, Fuhong,Wang, Tao,Gu, Lijuan,et al. An Integrated Use of Topography with RSI in Gully Mapping, Shandong Peninsula, China[J]. SCIENTIFIC WORLD JOURNAL,2014:827124.
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