A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds

doi:10.1016/j.jhydrol.2021.126585

	A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds
	Liu, Junzhi 3,4,5; Liu, Zhangcong 3,4; Yin, Yueqiang 3,4; Croke, Barry F. W.2,3,6; Chen, Min 3,4,5; Qin, Cheng-Zhi 7; Tang, Guoan 3,4,5; Zhu, A-Xing 1,3,4,5
刊名	JOURNAL OF HYDROLOGY
	2021-10-01
卷号	601 页码:8
关键词	Drainage network Hybrid vector-raster data model Spatial discretization Flow direction Watershed Rice terraces and ponds
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2021.126585
通讯作者	Zhu, A-Xing(axing@njnu.edu.cn)
英文摘要	A well-constructed drainage network is essential for hydrological modeling. Agricultural watersheds with heavy human alternations often contain man-made features like terraced fields and ponds. Incorporating these features in the drainage network in these watersheds is extremely important for hydrological modeling. This study proposed a novel hybrid vector-raster approach to drainage network construction in this type of regions. First, a watershed is discretized using a hybrid vector-raster data model to accurately represent the shapes and areas of irregular geographical entities. Then, the flow directions among discretized units are determined firstly within each land use type and then on the boundaries of different land use types based on elevation and land use specific boundary rules. After that, loops among units are processed to make sure each unit can flow out of the watershed. A small agricultural watershed in Jiangsu Province, China was selected to conduct a case study, and the results showed that the proposed method can obtain a more realistic drainage network than traditional methods, both in terms of geometric shapes and spatial topology.
资助项目	National Natural Science Foundation of China[41601413] ; National Natural Science Foundation of China[41871300] ; National Natural Science Foundation of China[41930102] ; PAPD[164320H116]
WOS关键词	HYDROLOGIC CONNECTIVITY ; MODEL ; SYSTEMS ; CATCHMENTS ; SURFACE ; AREAS ; SCALE ; GIS ; DEM
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000695816300011
资助机构	National Natural Science Foundation of China ; PAPD
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165670]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhu, A-Xing
作者单位	1.Univ Wisconsin, Dept Geog, Madison, WI 53706 USA 2.Australian Natl Univ, Math Sci Inst, Canberra, ACT, Australia 3.Nanjing Normal Univ, Sch Geog, Nanjing, Peoples R China 4.Nanjing Normal Univ, Minist Educ, Key Lab Virtual Geog Environm, Nanjing, Peoples R China 5.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China 6.Australian Natl Univ, Fenner Sch Environm & Soc, Inst Water Futures, Canberra, ACT, Australia 7.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Liu, Junzhi,Liu, Zhangcong,Yin, Yueqiang,et al. A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds[J]. JOURNAL OF HYDROLOGY,2021,601:8.
APA	Liu, Junzhi.,Liu, Zhangcong.,Yin, Yueqiang.,Croke, Barry F. W..,Chen, Min.,...&Zhu, A-Xing.(2021).A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds.JOURNAL OF HYDROLOGY,601,8.
MLA	Liu, Junzhi,et al."A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds".JOURNAL OF HYDROLOGY 601(2021):8.