Method for constructing riverway ecological restoration vegetation

Abstract

The invention discloses a method for constructing riverway ecological restoration vegetation, and relates to the technical field of environmental treatment. The method specifically comprises the following steps of S1, sampling of vegetation tree rings, S2, calculation of vegetation annual ring indexes, S3, calculation of a river water conversion ratio, S4, determination of a plant water use source, S5, implementation of an overflow experiment, and S6, based on field investigation results, selection of important values for characterizing the importance of a certain plant species in community succession. The method for constructing the riverway ecological restoration vegetation has the advantages that through overflowing of moderate surface water and water disturbance of groundwater depth fluctuation, the method is beneficial to the formation and maintenance of a plant community structure adapting to aridification in a desert riparian forest; based on the protection of an ecosystem and the efficient use of water resources, hydraulic distribution can compensate for the ecological water deficiency of plant communities to a certain degree, the rapid restoration of the degraded ecosystemof the desert riparian forest can be promoted, and a theoretical guidance is provided for the resistance of the ecosystem of the desert riparian forest to drought stress.

Description

technical field [0001] The invention relates to the technical field of environmental management, in particular to a method for constructing river ecological restoration vegetation. Background technique [0002] In the process of ecological restoration of desert riparian forests, the flooding of rivers improves the environmental conditions for plant seed bank germination and seedling settlement. Studies have analyzed the impact of water conservancy projects (such as flood control dams, ecological water delivery projects, etc.) Physiological changes, community structure and spatial distribution pattern are closely related to the process of flood overflow. It is noteworthy that previous studies have found that herbaceous plants are more sensitive to flood flooding than trees and shrubs. After one flood, herbs germinate in large numbers, while trees and shrubs need multiple floods to germinate. Species richness did not increase with flood water volume, and there was a signific...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for constructing river channel ecological restoration vegetation, which solves the problem that the existing overflow interference method lacks long-term continuous observation data, and the duration and frequency of overflow are not quantified enough, resulting in floods The continuous impact of flood disturbance on plant community succession cannot be explained clearly. At the same time, how to aim at the two goals of desert riparian forest ecological restoration and protection, with the help of combined disturbance of surface water and groundwater, according to different plant community compositions and different droughts The water use strategy of plants under stress and the determination of the appropriate groundwater burial depth range are relatively few related research issues

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