Evaluation method for monitoring degradation degree of alpine grassland by using soil arthropods

Abstract

The invention relates to an evaluation method for monitoring the degradation degree of alpine grassland by using soil arthropods. The method comprises the following steps: (1) collecting information of alpine grassland soil arthropods and target backgrounds; (2) calculating the individual number and class group number difference degree of large and small and medium-sized soil arthropods in alpine grassland with different degradation degrees, and compiling an alpine meadow degradation degree evaluation table according to the individual number and class group number of the soil arthropods; (3) establishing an evaluation sample plot; (4) collecting large and small and medium-sized soil arthropod samples in the evaluation sample plot according to collection specifications, determining family or objective information according to the retrieval graph, counting the number of individuals and the number of classes according to the family or objective, and determining the difference degree of the large and small and medium-sized soil arthropods under the grazing forbidding and grazing conditions through statistical analysis; (5) determining the alpine grassland degradation degree according to the degradation degree evaluation table. The method is simple, accurate and low in cost.

Description

technical field [0001] The invention relates to the technical field of grassland ecological environment, in particular to an evaluation method for monitoring the degradation degree of alpine grassland by utilizing soil arthropods. Background technique [0002] Alpine grassland is the main grassland type in northwest China and an important ecological barrier in western China. In recent years, under the interactive influence of climate change and grazing disturbance, alpine grassland is facing the crisis of serious degradation, and its ecological function continues to decline, thus affecting the security and stability of the alpine grassland ecosystem. Therefore, the monitoring and evaluation of the degree of degradation of alpine grassland is of great significance for guiding grazing, and formulating a scientific grazing system according to the degree of grassland degradation is conducive to maintaining soil biodiversity and soil multifunctionality in alpine grassland, thereb...

AI Technical Summary

Problems solved by technology

However, the determination of soil animal species information has always been a difficult point in soil ecology research. The identification of small and medium-sized soil animals and larvae or nymphs is costly and time-consuming, which also limits the presence of dominant species, genera or populations in soil animal communities in grasslands, etc. Applications in Environmental Degradation Monitoring

In addition, the distribution of species or genus in the process of grassland degradation will disappear due to the intensification of degradation or abnormal climate changes, and the changes in the number or species cannot accurately reflect the degree of environmental degradation

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