Method for quantitatively evaluating water resource effects of ecological protection and restoration in river source region

Abstract

The present invention provides a method for quantitatively evaluating water resource effects of ecological protection and restoration in the river source region. The method comprises the following steps: obtaining soil hydrological characteristic parameters through a prototype ecological hydrological observation test; constructing distributed ecological hydrological simulation of a research area;and finally, according to hydrological characteristic parameters obtained in the preliminary period and the constructed distributed ecological hydrological model, setting scenario plans, comparing theecological hydrological process simulated by each scenario plan with that before the measures are taken, and quantitatively analyzing water resource effects after different ecological protection measures are taken. According to the method provided by the present invention, the problem of applicability of the existing ecological hydrological model in solving the ecological hydrological process simulation in the large-scale, high-cold and high-altitude river source region is solved, and the experimental observation data is directly compared with the model parameters, so that the method can provide a scientific basis for quantitative analysis on water conservation and river runoff effects generated by large-scale ecological protection and restoration measures.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection and restoration, and in particular relates to a water resource effect quantitative evaluation method for ecological protection and restoration in source areas of rivers. Background technique [0002] The protection and restoration of the ecological environment has become one of the core contents of my country's ecological civilization construction. It is the basic guarantee for the realization of "green water and green mountains". A series of protection measures such as returning farmland to forests and grasslands and desertification control. However, there are still great difficulties in monitoring and evaluating the effect of protection. The main reason is that the prototype observation network can only be implemented on a point-scale and small scale due to limitations in funding, manpower, and natural conditions, and it is difficult to monitor and evaluate large-scale p...

AI Technical Summary

Problems solved by technology

The method based on hydrological model simulation starts from the regional hydrological characteristics and focuses on the analysis of changes in elements such as flow and velocity, so as to reflect the hydrological response characteristics of river runoff. However, it relies more on the applicability of the model itself. Common models (such as SWAT models) lack Modules that can simulate processes such as snowmelt and soil freeze-thaw in the headwaters of alpine rivers, coupled with the uncertainty of hydrological process parameters, are difficult to apply to the simulation of ecological hydrological processes and the evaluation and prediction of ecological effects in the headwaters of rivers

Statistical evaluation methods based on changes in vegetation growth factors can only describe the basic effects of ecological protection measures from a qualitative perspective, lacking quantitative and spatial analysis, and cannot give quantitative prediction results for the formulation and management of future ecological protection measures

The evaluation based on the construction of the ecological hydrological index system is mostly used for the statistical evaluation of the ecological hydrological situation changes caused by damming, climate change, water diversion, groundwater overexploitation, etc. There are large differences in characteristics, and the ecological index system has great limitations for the latter, especially the lack of effective tools for the quantitative assessment of the water resource effects of ecological protection in the headwaters of rivers

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