Method for restoring degraded grassland vegetations by using pitting technology

Abstract

The present invention discloses a method for restoring degraded grassland vegetations by using a pitting technology. The method for restoring degraded grassland vegetations includes pitting technologies respectively used for a lightly degraded grassland, a moderately degraded grassland and a heavily degraded grassland. The method includes: manually tamping pits in a degraded grassland where soil is severely eroded, tamping round pits in the degraded grassland, setting diameters and depths of the different pits, and determining a distance between every two pits according to the degradation degree of the grassland. The vegetation restoration of the degraded grassland is performed by mainly depending on the power of nature, and therefore, the method has the characteristics such as simplicityand easiness in operation, low restoration cost and good ecological restoration effect. Due to the adoption of pitting, the utilization efficiency of natural rainfall of a natural grassland is increased, the storage capacity of a degraded grassland soil seed bank is increased, the soil fertility of small pits is increased effectively, a microenvironment beneficial to seed germination is created, and thus, the seed germination and seedling amount of a natural grassland soil seed bank is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of ecological management and restoration of degraded grasslands, and in particular relates to a technical method for improving the storage capacity of soil seed banks and planting seeds into seedlings by utilizing hole-making technology, so as to realize the ecological restoration of degraded grasslands. Background technique [0002] Grassland degradation is the retrograde ecological succession caused by unreasonable management and excessive utilization under fragile ecological and geographical conditions, which leads to the decline of vegetation productivity, the replacement of biological composition, soil degradation, changes in the hydrological cycle system, and the deterioration of the near-surface microclimate environment. succession process. Water is the most important ecological factor in grassland ecosystems located in arid and semi-arid regions, and the only source of water for natural grasslands is...

AI Technical Summary

Problems solved by technology

However, due to limiting factors such as scarce precipitation, large evaporation, and serious wind and water erosion in the desert grassland, some traditional technical methods have no obvious effect in the vegetation restoration of the desert grassland, and even lead to aggravated degradation.

There is still a lot of blindness in the existing technical measures for ecological restoration of desert grasslands. Some areas adopt ecological restoration technical solutions that are not suitable for the characteristics of desert grasslands, resulting in ineffective ecological restoration and a large waste of manpower, material and financial resources.

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