Ecological state of the floodplain-channel complexes of small rivers in Novosibirsk

Natalya Sineeva,Inna Makarikhina,Alexander Vysokih

doi:10.1051/e3sconf/20199107018

Natalya Sineeva, Inna Makarikhina + Show 1 more

Open Access

https://doi.org/10.1051/e3sconf/20199107018

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Abstract

The relevance of this study is due to the increasing man-made stress on water bodies and the land resources connected with them within the urbanized territories, as a result, changes in the morphology and dynamics of river channels and floodplain. It leads to the need for an integrated environmental assessment of floodplain-riverbed complexes, especially small rivers within urbanized areas. The purpose of the study is an integrated environmental assessment of floodplain-channel complexes of small rivers in the city of Novosibirsk to substantiate the recommendations of engineering measures to reduce environmental tensions. The research results showed that the Yeltsovka and the Plyushchikha rivers belong to the group with weak environmental intensity, the Tula, the Yeltsovka-2, the Kamenka, the Kamyshenka are of medium environmental intensity, the Yeltsovka-1 is with strong environmental tension. Significance of the study is that the integral assessment of the floodplain-channel complex of small rivers in the city of Novosibirsk can be used to substantiate the recommendations of engineering measures to reduce environmental tensions, which should be selected based on the obtained integral points, as well as to prevent accidents at various facilities or communications during engineering construction or water engineering design, construction and operation.

Highlights

Large-scale and diversified use of water and land resources connected with them is accompanied by a noticeable deterioration of the ecological situation on the rivers and river valleys, associated with such changes in the morphology and dynamics of the river channels, nature of floodplains, which adversely affect life and conditions of people economic activity, on the one hand, and with the strengthening of dangerous manifestations of channel processes on the other
The purpose of this work is an integrated environmental assessment of floodplainchannel complexes of small rivers in Novosibirsk to substantiate the recommendations of engineering measures to reduce environmental tensions
The assessment of environmental stress associated with each type of process or anthropogenic changes in the floodplain-channel complex is ranked by five gradations, each of which is assigned a score depending on the degree of influence: no negative impact corresponds to 0 points; the phenomena that caused the most adverse effects cost 5 points

Summary

Introduction

Large-scale and diversified use of water and land resources connected with them is accompanied by a noticeable deterioration of the ecological situation on the rivers and river valleys, associated with such changes in the morphology and dynamics of the river channels, nature of floodplains, which adversely affect life and conditions of people economic activity, on the one hand, and with the strengthening of dangerous manifestations of channel processes on the other. The processes and phenomena that determine the ecological status of small rivers of agglomerations include anthropogenic silting and degradation of the channels (as a result of soil erosion in the catchment areas and in the rivers’ floodplains, city industrial pollution and low ecological culture of the population); changes in floodplain landscapes associated with agricultural and industrial production, development of the territory. The use of the river channels as waste water receivers (collector), agricultural development of floodplains, as well as their intersection utilities, etc are of great importance

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