<trans-title>Uncertainty of the Morphological Feature Expression of Loess Erosional Gully Affected by DEM Resolution</trans-title>

Sijin LI; Wen DAI; Liyang XIONG; Guoan TANG

doi:10.12082/dqxxkx.2020.190352

Journal of Geo-information Science, Volume. 22, Issue 3, 338(2020)

Uncertainty of the Morphological Feature Expression of Loess Erosional Gully Affected by DEM Resolution

Sijin LI1...1,2,2,3,3, Wen DAI1,1,2,2,3,3, Liyang XIONG1,1,2,2,3,3,*, and Guoan TANG1,1,2,2,33 |Show fewer author(s)

¹Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China

¹虚拟地理环境教育部重点实验室（南京师范大学）,南京 210023

²School of Geography, Nanjing Normal University, Nanjing 210023, China

²南京师范大学地理科学学院,南京 210023

³Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

³江苏省地理信息资源开发与利用协同创新中心,南京 210023

show less

Abstract Get PDF(in Chinese)

Figures & Tables(8)

Fig. 1. Workflow of uncertainty of the morphological feature expression of loess erosional gully

Download full size

View in Article

Fig. 2. Sketch map of illumination model

Download full size

View in Article

Fig. 3. Location of the study areas and digital elevation model data

Download full size

View in Article

Fig. 4. The results of gully indicators and the relationships between gully channel indicators and DEM resolutions

Download full size

View in Article

Fig. 5. The influence of DEM resolution on gully cutting depth

Download full size

View in Article

Fig. 6. The results of gully head indicators and the relationships between gully head indicators and DEM resolutions

Download full size

View in Article

Table 1. The appropriate threshold value for gully network extraction of sample areas (m)
View table
View in Article
Table 1. The appropriate threshold value for gully network extraction of sample areas (m)
样区
1 2 3 4 5 6 7 8 9 10
麻地沟 350 200 100 80 70 60 50 40 40 40
安塞 350 200 150 120 100 100 80 70 60 50
桥沟 350 150 100 80 80 70 60 50 50 50

Table 2. Basic information and features of study areas

View table

View in Article

Table 2. Basic information and features of study areas

样区	位置	面积/km²	海拔/m	侵蚀沟特点
安塞	37°14'24"N—37°14'27"N,109°14'41"E—109°14'53"E	0.50	1163.7~1416.5	主沟道呈东西走向,南面浅沟和切沟发育多,北面下切侵蚀强烈,发育3条较大的切沟,较少发育浅沟
麻地沟	37°28'59"N—37°28'49"N,108°48'2"E—108°48'35"E	0.23	1396.8~1556.8	主沟道呈南北走向,浅沟和切沟发育较多
桥沟	37°34'10"N—37°34'16"N,104°16'49"E—104°16'57"E	0.13	900.9~1017.1	主沟道呈西南—东北走向,两侧发育有较多浅沟和切沟

Tools

Get Citation

Copy Citation Text

Sijin LI, Wen DAI, Liyang XIONG, Guoan TANG. Uncertainty of the Morphological Feature Expression of Loess Erosional Gully Affected by DEM Resolution[J]. Journal of Geo-information Science, 2020, 22(3): 338

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Received: Jul. 3, 2019

Accepted: --

Published Online: Sep. 16, 2020

The Author Email: XIONG Liyang (xiongliyang@163.com)

DOI:10.12082/dqxxkx.2020.190352

Topics

Resource Economy

Research Articles

Table 1. The appropriate threshold value for gully network extraction of sample areas (m)

Table 1. The appropriate threshold value for gully network extraction of sample areas (m)

Table 2. Basic information and features of study areas

Table 2. Basic information and features of study areas

微信扫一扫：分享