Method for recovering desertified grassland in grazing ecosystem

Abstract

The invention provides a method for restoring desertification grassland in a grazing ecosystem. The method comprises the steps that S1, the desertification grassland which is extremely degraded in the grazing grassland ecosystem is selected; s2, further determining the desertification grassland with normal large livestock grazing activities in adjacent grassland as a recovery object; s3, in the early stage of the plant growth season every year, driving the large livestock fed by the adjacent grassland into the desertification grassland, enabling the large livestock to move continuously while completing excretion activities, and treading the desertification grassland and excreta; s4, after the large livestock completing the treading activity is driven to the adjacent grassland for eating, the large livestock is driven to the desertification grassland again; s5, the step S3 and the step S3 are repeated, and the duration time is 15-25 days; s6, repeating the step S5 for 4-10 years; and S7, after 4-10 years, detecting plant growth and soil property index data. The recovery method is free of exogenous substance addition, low in cost, easy to operate and convenient to popularize in a large area in degenerated grazing grassland.

Description

Technical field [0001] The present invention relates to the field of ecosystem restoration technology, in particular, to a method and system of restoration of desertified grasslands in a grazing ecosystem. Background [0002] Grassland is one of the important ecosystem types, and its global distribution area is second only to forests and woodlands, accounting for nearly 1 / 4 of the earth's surface land area. While grasslands play a key role in biodiversity maintenance, soil and water conservation, the global carbon cycle, livestock production, etc., they are also very sensitive to environmental change, and most of the world's grasslands belong to fragile ecosystems. At present, due to global climate change and irrational human activities, the phenomenon of grassland degradation and even desertification is becoming increasingly serious. As the world's second largest grassland country, China's degraded grassland area exceeds 3 / 4 of the total grassland area, of which nearly 1 / 3 appea...

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Problems solved by technology

It should be pointed out that the current discussion on the restoration effectiveness of these measures is mainly based on the results of short-term experimental studies, and the applicability of different measures depends strongly on the degree of desertification. Some measures, such as ecological blanket coverage, add extraneous substances. This situation may Greatly limits the large-scale practice of specific restoration measures

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