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- Title
Paleodrainage network in the Xiong' an New Area: Remote sensing - based reconstruction and relationship with town planning.
- Authors
SUN Xiyong; LI Jingjing; ZHANG Ruijiang; WANG Shaoqiang; JI Xinyang; LI Guangwei
- Abstract
Xiong' an New Area is a national new area. It has a low groundwater level and close water exchange between the zone of aeration and the saturated zone with the upward recharge of groundwater increasing the water content in soil. On this basis, with remote sensing images as the data source, this study carried out object -oriented land clarification for the study area, extracted the vegetation information by mask, and further extracted the soil moisture information of the vegetation area using the temperature vegetation dryness index (TVDI) . Then, by combining the geological and geomorphic characteristics of the palaeochannels in the area, as well as visual interpretation, this study identified the palaeochannels in the study area and verified them in the field. Finally, it reconstructed the paleodrainage system of the study area. The results are as follows: 1 The method proposed in this study can effectively extract information on the paleodrainage system in the study area; 2 The distribution of the current surface water bodies in the study area is quite different from that of the paleodrainage system; 3 The comparison between the land clarification results and the paleodrainage system interpretation results shows that the paleodrainage system was mostly distributed in present construction land, which is present as rural residential areas in remote sensing images. 50 m, 100 m, and 200 m buffer zones were set in the paleodrainage system areas, and then a intersection analysis was made for the buffer zones and the land classification results. The results show that the proportion of construction land in the buffer zones is significantly higher than that of construction land in the whole region. This result indicates that there exists a certain correlation between the distribution of the paleodrainage system and villages.
- Subjects
URBAN planning; REMOTE sensing; WATER table; WATER currents; WATER levels; GROUNDWATER recharge; ARTIFICIAL groundwater recharge
- Publication
Remote Sensing for Natural Resources, 2023, Vol 35, Issue 1, p132
- ISSN
2097-034X
- Publication type
Article
- DOI
10.6046/zrzyyg.2022003