干旱区生态环境知识资源中心(Arid): Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data

Arid

DOI	10.3390/app13020700
	Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data
	Kim, Seoyoung; Yoon, Sun-Kwon; Choi, Namjeong
通讯作者	Yoon, SK
来源期刊	APPLIED SCIENCES-BASEL
EISSN	2076-3417
出版年	2023
卷号	13 期号:2
英文摘要	The purpose of this study is to identify the relationship between drainage density and climate, as represented by the climate aridity index, and to understand the relationship between drainage density and drainage area. A total of 121 study sites with low human impact, and a wide range of climate aridity index 0.3 (humid)-10.4 (arid), were selected based on the availability of light detection and ranging (LiDAR) data, producing a digital elevation model (DEM) with a spatial resolution of 1 m. A curvature-based method, incorporating both positive and negative curvature information, was used to extract the valley (drainage) network from the LiDAR-based DEMs. Drainage density and climate aridity index exhibited a monotonically increasing trend, contrary to the previous results that have shown a U-shaped relationship. This discrepancy was caused by the selection of watersheds with extensive human activity in the previous study. One-meter resolution DEM produced greater drainage density than the previous studies with a coarse spatial resolution of 30 m as small valleys are not detectable in low-resolution topography datasets. The discrepancy between the previous study and the current study results encouraged further investigation of the impact of the drainage area (watershed size). A negative correlation between drainage density and drainage area was reconfirmed, while a stronger decreasing trend was observed in arid regions than in humid regions.
英文关键词	climate aridity index drainage density drainage area valley network extraction LiDAR data
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000916919400001
WOS关键词	BASE-FLOW RECESSION ; CHANNEL NETWORKS ; EROSION THRESHOLDS ; EXTRACTION ; MODEL ; TOPOGRAPHY
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395356
推荐引用方式 GB/T 7714	Kim, Seoyoung,Yoon, Sun-Kwon,Choi, Namjeong. Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data[J],2023,13(2).
APA	Kim, Seoyoung,Yoon, Sun-Kwon,&Choi, Namjeong.(2023).Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data.APPLIED SCIENCES-BASEL,13(2).
MLA	Kim, Seoyoung,et al."Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data".APPLIED SCIENCES-BASEL 13.2(2023).