Method and system for evaluating influence of lake water level change on functional traits of aquatic plants

Abstract

The invention discloses a method and a system for evaluating influence of lake water level change on functional traits of aquatic plants. The method comprises the steps of acquiring long-time sequence water level data of a lake; selecting a target plant community according to the functional character evaluation purpose; according to the long-time sequence water level data and the target plant community, establishing an aquatic plant community observation standard positioning community; recording the elevation of each standard positioning cell one by one; according to the elevation, adopting a water level calculation method, and determining the district flooding depth and time in the observation period; obtaining functional characters of the aquatic plant community; according to the flooding depth, the time and the aquatic plant community functional characters, constructing a year-season relation curve of the aquatic plant functional characters, the water depth and the season; and evaluating the degree and the direction of the influence of the water depth on the functional traits of the plants according to a year-season relation curve of the functional traits of the aquatic plants, the water depth and the seasons. Limitations of experiment and simulation conditions can be overcome, and the purpose of quantitatively analyzing and predicting response of aquatic plant functional characters to lake water level changes is achieved.

Description

technical field [0001] The invention relates to the field of lake ecosystem research, in particular to a method and system for evaluating the influence of lake water level changes on the functional traits of aquatic plants. Background technique [0002] Aquatic plant communities shape and maintain the most typical and key ecological functions of lake wetland ecosystems, and plant functional traits play a decisive role in the above processes. In recent years, approaches based on plant functional traits have emerged as reliable avenues to address important ecological problems. However, the extreme variability of plant traits under different environmental gradients makes the observation and application of traits full of challenges. In the lake wetland ecosystem, the hydrological regime is an important external environmental condition that affects the aquatic plant community. The water level, occurrence time, and duration have a significant impact on the plant community distrib...

AI Technical Summary

Problems solved by technology

However, the current methods for analyzing the impact of water level on aquatic plant communities are mostly based on laboratory conditions or small-scale artificial simulation experiments, and are basically concentrated on the species level, which cannot meet the needs of quantitative assessment based on in situ data.

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