Method for increasing carbon sequestration amount of seriously-degraded leymus chinensis meadow vegetation

Abstract

The invention relates to a method for increasing the carbon sequestration amount of severely-degraded leymus chinensis meadow vegetation. The method comprises the steps that 1, soil preparation is conducted on the position, without leymus chinensis dominant species coverage or with low plant coverage rate, in a preset area in shallow ploughing and light raking manner, the soil preparation time isthe first ten days of April in the same year, soil blocks need to be smashed in the soil preparation process, and the soil turning depth needs to be 6-10 cm; 2, a predetermined ecological preparationis applied to the prepared land in the first ten days or the middle ten days of April of the same year; 3, a predetermined fertilizer is applied to the land to which the predetermined ecological preparation is applied in the first ten days or the middle ten days of April in the same year; 4, predetermined grass seeds are sowed in the middle ten days or the last ten days of April in the same year on the land to which the predetermined fertilizer is applied; and 5, later-period management and protection are conducted, wherein watering is mainly conducted in the sowing period. The method can effectively improve the growth environment of the vegetation, improve the productivity and carbon sequestration capacity of the vegetation and increase the carbon sequestration amount of the vegetation.

Description

technical field [0001] The invention relates to a method for increasing the carbon sequestration capacity of heavily degraded Leymus chinensis meadow vegetation, and belongs to the technical field of grassland carbon sink emission reduction. Background technique [0002] Carbon is the most basic cyclic substance in the ecosystem, mostly in the form of CO 2 The forms of spheres migrate and transform between the biosphere, hydrosphere, lithosphere and atmosphere, and remain in a relatively balanced state. However, due to human activities dominated by agricultural reclamation, overgrazing, and burning of fossil fuels, atmospheric CO 2 The sharp increase in the content of carbon dioxide destroys the balance of the global carbon cycle, increases carbon sources while reducing carbon sinks, and changes the global climate. In the context of global warming, increasing terrestrial response to CO 2 The fixation of carbon emissions, the reduction of carbon emissions, and the fight fo...

AI Technical Summary

Problems solved by technology

However, due to the transitional needs of economic and social development, human beings represented by land reclamation, reclamation and overgrazing have led to the deterioration of the ecological environment of the Songnen Grassland. The problems of "degeneration, salinization and desertification" of the grassland are particularly serious, and the carbon sequestration capacity of vegetation is serious. decline

At home and abroad, a lot of work has been done on the carbon sequestration of grassland ecosystems, most of which focus on basic theoretical research on carbon cycle, greenhouse gas emissions, soil carbon and nitrogen, etc. Research on grassland vegetation carbon sequestration and increasing sink technology is still in the works. lacking