Journal of Geo-information Science, Volume. 22, Issue 3, 464(2020)
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Fig. 1. DEM spatial distribution map with a resolution of 90 m×90 m in Fujian province and surrounding areas in 2000
Fig. 2. The technical route of geomorphic classification based on BEMD topography decomposition
Fig. 3. BIMF component and margin of BEMD decomposition of DEM data in Fujian province in 2000
Fig. 4. Extraction of high-frequency region based on topographic decomposition of DEM data in Fujian province in 2000
Fig. 5. Extraction of low-frequency areas based on topographic decomposition of DEM data in Fujian province in 2000
Fig. 6. Extraction of intermediate frequency region based on topographic decomposition of DEM data in Fujian province in 2000
Fig. 7. Combined layers based on topographic decomposition of DEM data in Fujian province in 2000
Table 1. Altitude indicators for geomorphological classification
View tableView in ArticleTable 1. Altitude indicators for geomorphological classification
地貌类型 海拔高度/m 平原 ≤ 200 丘陵 ≤ 500 低山 500~1000 中山 1000~3000 高山 3000~5000 极高山 >5000
Table 2. Classification standards of first-level geomorphic types in China
View tableView in ArticleTable 2. Classification standards of first-level geomorphic types in China
地貌类型 地形起伏度/m 平原 ≤ 30 丘陵 30~200 小起伏山地 200~500 中起伏山地 500~1000 大起伏山地 1000~2500 极大起伏山地 >2500
Table 3. Geomorphic types in Fujian province under macroscopic classification
View tableView in ArticleTable 3. Geomorphic types in Fujian province under macroscopic classification
频率 起伏度/m 高程/m 地貌类型 低频 ≤ 30 ≤ 200 低频平原 ≤ 200 ≤ 500 低频丘陵 中频 ≤ 200 ≤ 500 中频丘陵 ≤ 500 ≤ 1000 中频小起伏低山 高频 ≤ 200 ≤ 500 高频丘陵 ≤ 500 ≤ 1000 高频小起伏低山 ≤ 500 ≤ 2500 高频小起伏中山
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Wenya GU, Xiangrui MENG, Xiaochen ZHU, Xinfa QIU.
Paper Information
Received: May. 30, 2019
Accepted: --
Published Online: Sep. 16, 2020
The Author Email: QIU Xinfa (xfqiu135@nuist.edu.cn)
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