The Influence Of The Desertified Grassland With Fence In Different Land Treatment Methods On Soil Organic Carbon Components

With the rapid development of human industrialization in recent centuries,the problem of rapid climate change has become very significant and has attracted people’s attention.Among the climate change issues,CO₂,as the most important greenhouse gas,has received extensive attention.Soil carbon pool is the largest on land.More than 70%of the carbon is collected in the soil.In the process of soil carbon cycle,a slight change will have a profound impact on the change of carbon content.At the same time,the release of CO₂ based on soil respiration is an important part of the CO₂ content.Therefore,studying and mastering the laws of soil carbon cycle has become an important subject in the study of world ecological changes.Soil organic carbon is an extremely important part of soil carbon components.According to its different classification methods and different turnover pathways,soil organic carbon can reflect different environmental meanings.Research on the organic carbon of different components in soil can not only Understand its composition,so as to deduce the ways and means of change and transfer,and it can also carry out human intervention in the intermediate process,so as to better serve the improvement of the environment.The stability of soil carbon largely depends on the composition of soil organic carbon components.Through physical and chemical levels,soil organic carbon is divided into different components,and the separated active and inert components of organic carbon The role of soil carbon sequestration is different,and the improvement of soil carbon sequestration capacity is of great value to greenhouse gas emission reduction.Different land use methods will have a series of chain reactions on the morphology of soil organic carbon components.Therefore,the influence of different treatment methods on the morphology of soil organic carbon components is of great significance for artificially improving the ability of soil carbon sequestration.This paper mainly studies three kinds of soil organic carbon（light organic carbon,particulate organic carbon,and mineral,bound organic carbon）.By applying different treatment methods to the land,the changes of the three organic carbon components are compared to explore the organic carbon in the soil.The changing law of carbon provides a theoretical basis for the scientific assessment of soil carbon cycle.In this experiment,POC,MOC and LFOC were selected as the research objects to measure the land under different treatments from three aspects:the change of soil organic carbon pool,the stability of soil organic carbon and the ability to retain organic carbon,and to intuitively reflect the land fertility under different treatments.In addition,this experiment will study the relationship between POC,MOC and LFOC contents of surface soil and total soil organic carbon content,and then analyze the change of carbon content of each component caused by the change of surface soil depth.By comparing the carbon content of each component with a large number of simulated land use types,the causes of component changes can be predicted to a certain extent,and a set of relatively scientific land treatment methods can be obtained,which has guiding significance for farmland cultivation and desertification control in practical life.In addition soil structure can largely influence the content of soil organic carbon of soil structure is loose in the conversion to external carbon source is also easy to lost their inherent organic carbon,so the soil structure result in large variations in the organic carbon content of So the reasonable change of soil structure,control the air permeability will be of great help to soil organic carbon content However,the influence of soil structure is too complex to be discussed in this experiment...