Novel river health evaluation method

Abstract

The invention discloses a new river health evaluation method. The method comprises the following steps: step 1, screening ecological indexes for evaluating river health according to the characteristics of a river and the change of a cascade barrage to the river; 2, carrying out continuous and long-term monitoring on the screened river indexes; 3, calculating an index based on the collected data, and defining the change condition of the deviation index of the index after the index is compared with the natural river; 4, dividing index grades according to the characteristics of the deviation degree indexes; and 5, comprehensively evaluating the influence condition of the river health of the cascade barrage. Through positive and negative deviation index analysis, the influence degree of damming on the river can be reflected, the health condition of each damming area river reach can be evaluated, more accurate research is provided for the health condition of the whole river, and therefore suggestions are provided for river management.

Description

technical field [0001] The invention belongs to the technical field of river research and relates to a new river health evaluation method. Background technique [0002] In recent years, with the continuous improvement of urban functions, urban river regulation has higher and higher requirements for river landscapes. The cascade development of barrages has become a major feature of urban river landscapes. It not only brings economic and social functions, but also contributes to The health of the river's ecosystem has also had some adverse effects. For example, the flow of sediment has decreased, the reservoir has been silted, the water quality of the reservoir has deteriorated, and problems such as the formation of black water bodies accompanied by foul odors have gradually become apparent. Moreover, the cascade-developed barrage has a more serious impact on the health of the river than a single barrage, because it has characteristics such as accumulation and latentness. The...

AI Technical Summary

Problems solved by technology

[0003] The impact of cascaded single reservoirs on the health of river ecosystems is relatively extensive, mainly reflected in the improvement of river health indicators and evaluation methods, but the impact of continuous cascade dams on river ecological health is relatively small, especially the continuous one-by-one barrages on river health. Changes in research methods are even less common

Images