River basin source area range delimiting method

• Main Authors: ZHOU YUYAN, HOU BAODENG, LIU JUN, LIU HONGCAI, DING XIAOWEN, WANG LULU
• Format: Patent
• Language: Chinese; English
• Published: 19.09.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses a river basin source area range demarcation method, which comprises the following steps of S1, demarcating a target basin range on a DEM model of a river basin, and demarcating main and branch flows in the target basin range according to the water storage capacity, the river width, the altitude and the historical river change condition of each river reach; s2, determining a source branch according to the on-way gradient, the landform, the weather and climate conditions, the ecosystem and the human activity range parameters of each branch on the main branch; and S3, obtaining a boundary section on the source tributary, and taking a source tributary drainage basin range above the boundary section as a source region range delimited by the river drainage basin. According to the method, the applicability of river source division of the plateau area can be effectively improved, and the method has very important practical significance on ecological civilization construction of the plateau riv