River basin water and soil conservation measure configuration method adaptive to river sediment transport

Abstract

The invention discloses a river basin water and soil conservation measure configuration method adaptive to river sediment transport, which comprises the following steps: determining the regional suitability grade of a terrace according to positive and negative terrains and the soil distribution range and thickness; determining the regional suitability grade of the forest land according to the climate subareas and the soil characteristics; determining different vegetation coverage scenes based on vegetation coverage change characteristics; according to the obtained data, determining multiple water and soil conservation slope measure combination modes , and calculating the slope soil erosion amount Ts under each combination mode; giving the river sediment transport amount, and determining the number of reference silt dam systems in each combination mode according to the calculation result of the slope soil erosion amount; and comparing the treatment scene with the existing water and soil conservation measure configuration of the watershed, and determining a watershed water and soil conservation measure configuration scheme. The method is scientific in process and high in operability, and the relationship between drainage basin treatment and river sediment transport can be fully coordinated according to the determined drainage basin water and soil conservation measure configuration scheme.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection, and relates to a method for configuring water and soil conservation measures in river basins adapted to river sediment loads. Background technique [0002] With the advancement of my country's ecological civilization construction, the national ecological environment has improved significantly. [0003] Watershed governance is the core driving force for promoting ecological civilization, and the primary task of watershed governance is the scientific layout of soil and water conservation measures. In traditional watershed governance planning, the layout of soil and water conservation measures aims to minimize soil loss, ignoring the river's demand for sediment transport. For healthy rivers, it is necessary to maintain a certain amount of sediment transport. For the Yellow River, for example, the rapid decline in sediment load will threaten the safety of downstream embank...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a watershed soil and water conservation measure configuration method that adapts to river sediment loads, which solves the problem of ignoring river sediment loads in river basin governance planning in the prior art, which leads to a crisis in the safety of downstream dikes problem, the allocation scheme of water and soil conservation measures determined by this method can fully coordinate the relationship between watershed management and river sediment load

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