英文摘要翻译。急求。高分。生物学。回馈高分！

All into the soil microorganisms in soil organic matter decomposition and transformation, and in maintaining the ecological balance of the biosphere and for providing a wide range of human, a large number of untapped resources play an important role. Soil microorganisms in terrestrial ecosystems is the most active components, responsible for the decomposition of animal and plant residues important mission of promoting the eco-system of energy flow and material circulation, maintain normal functioning of ecosystems, three main types of soil microorganisms (fungi and actinomycetes fungi and bacteria) have a powerful enzyme system, decomposition of organic matter in the capacity of the complex is particularly virulent, can lead to soil in plant residues of the major components - cellulose, lignin and pectin, such as the decomposition of the soil can break down non - nitrogen and nitrogen-containing organic compounds, is a natural material and the main decomposers in the soil organic and inorganic substances into play a great role in the process. Micro-organisms in the soil distribution and activities, not only a reflection of soil factors on the impact and role of micro-organisms, but also as a result of the biochemical activity of soil microorganisms, but also significantly affect soil fertility, plant growth and development and improvement of soil conditions, soil development revealed the evolution of the law. Therefore, three main types of soil micro-organisms in the soil and the number and types of distribution and status of activities and has always been agriculture and animal husbandry, soil microbial ecology, one important area of research. Soil microorganisms is important to maintain the components of soil quality can be sensitive to reflect changes in soil quality, soil quality assessment is an important biological indicators.
In this paper, the core region to Sanjiangyuan typical alpine Kobresia meadow, severe degradation of grassland and artificial grassland-based reconstruction, the use of soil microorganisms and soil science principles, methods, the number of soil microorganisms was studied to explore the alpine meadow degradation of grassland degradation and its restoration and reconstruction of the impact of soil microbes to the degradation of alpine meadow to study the mechanism and the use of artificial grass to improve soil properties and enhance the stability of soil microbial and soil nutrient provide theoretical basis for the Three Rivers restoration of degraded grassland in alpine zones to provide reference information