| Nowadays soil erosion is one of the key areas of academic research, it hindered the survival and development of human beings seriously, it is also one of the major environmental disasters of the human society, meanwhile it is also an important part of our country’s territorial management. Dynamic study on the regional soil erosion can directly reflect the corresponding changes of the soil erosion in the region along with the change of time, space and landscape.In fact,soil erosion and soil accumulation is often simultaneous interaction.Therefore, the dynamic changes of the regional soil erosion and accumulation of the study area can be reflected more realistic within a certain time and space, provided a reliable basis for scientific analysis and decision-making.Take the lakeside of Chagan,Abag banner,Xilingol League,Inner Mongolia as the research area, by using the method of pin in the period of one year of continuous monitoring on the dynamic change of soil erosion and accumulation, and based on the observation data to carry out the analysis and research, in order to the follow-up of ecological research and control to provide reliable, real scientific basis.The main content of this research including:(1) on the dry lake lakeside zone surrounding the system arrangement of pin and a year of continuous observation(except the snow cover period, same as below), the analysis and study of lakeside zone, different time, different regions of different landscape types the dynamic changes of the intensity of soil wind erosion and deposition process.(2)Diction in northwestern dry lake sand along the sand running direction(northwest- southeast) series arrangement of pin and a year of continuous observation, analysis and research the different parts of the section of dunes wind erosion and deposition process of dynamic change, further analysis of northwest dry lake sand source for dry lake basin for the process of sand.(3) in the south of dry lake sand along the direction of the sand running(northwest- southeast) series arrangement pin and a year of continuous observation, analysis and study the different parts of the section of dunes wind erosion and deposition process of dynamic change, further analysis of dry lake basin on the northern edge of the Hun Shan Da Ke sand for sand process.Study shows that the area of wind erosion and accumulation, and as the change of time and space on the basis of landscape also corresponding changes in its strength. Spring general erosion intensity bigger, fall accumulation intensity; Dry lake basin margin erosion intensity bigger;Typical grassland landscape type intensity of soil erosion and accumulation,smaller achnatherum splendens meadow landscape types and landscape type alkaline erosion intensity of accumulation times, salt accumulation of bare land erosion intensity biggest; Northwest south sand and sand windward slope erosion intensity bigger, leeward slope accumulation intensity; Northwest sand on the dry lake from northwest to southeast for sand process; South sand in the northern edge of the Otingdag Sand Land for sand process from northwest to southeast.Analysis shows that there are also some areas development good vegetation protection of weak erosion and accumulation process; Has cultivated the alkaline community area, in the alkaline growing season,erosion accumulation process is not obvious or have different degree of accumulation; In a location, with white spines sandbags to protect wind show obvious accumulation condition; Dry lake basin in the northwest sandy north close to the grass, but in the long-term overgrazing, under the action of the surface is badly damaged, called the chagan 4, mainly in northwest dry lake,lake sand source material, combined with the strong northwest wind in continuous to happen as dry lake for the process of sand; Under the action of the strong northwest wind in spring, in the south sand erosion state, a large amount of sand as the winds were carried to Otingdag Sand Land hinterland,continuously for sand process. |
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