| Xinjiang Ebinur Lake is the most low-lying land sink lake in the southwest of the Songorine Basin, and it is the country lake in western of China. Moreover, it is also the biggest salt-water lake in Xinjiang and has been included into the Chinese's important name list. The Ebinur Lake's special geographical position and the terrain landform characteristic enables it to have the quite complete biodiversity, which refers to drafts the Zhungeer basin ecological environment change the essential area. It has the typical nature and high protective value in our country interior wilderness natural ecosystem.There are many nebkhas around the Ebinur Lake which occur by the effect of sand biology and the wind action forms. The nebkhas are the arid area desert, half arid half moist sand and the sandy coastal zone common eolian deposit biology landform type, because the wind sand flow meets the brush to stop, the sand material and periphery piles up in the brush forms. Usually the nebkhas's degenerated succession process is result of the combination of natural factor and the artificial activity to the ecosystem pressure. It is reflected the ecology change and the climate evolve one of important symbols, therefore, the nebkhas's production and declining and the land desertification counter process are closely related to each other. Therefore, study on the present situation of the brush sand beach's spatial distribution pattern has the influential role to the desertification prevention as well as the region ecological protection.By utilizing the method of point-line-surface and taking RTK as the platform key, this study attempts to carry on actual and the sampling analysis of the characteristic of the Ebinur Lake peripheral typical quadrat in the nebkhas. By using the GIS technology production digit elevation model (Digital Elevation Model, called DEM), visual interpretation to Ebinur and Lake's high-resolution remote sensing phantom, the author describe the results from the perspectives of the nebkhas's cover type, the density, highly, the area and volume. In order to study the spatial distribution pattern of Ebinur Lake peripheral nebkhas, and discussed the possible reasons behind it. This study will provide the essential data for present's monitor work, and provide the new technological means and the method for the future research work.Through the analysis of the correlation data of the Ebinur Lake's peripheral nebkhas spatial distribution, the present study draws the following conclusions:(1) Adopting the method of point-line-surface and taking RTK as the platform in the sampling place, the present study collects massive related baseline data which are precise reliable and reliable, it has provided the basis for the future monitoring work.(2) Choosing 4 sampling places which have different type of the nebkhas, raises the sample area nebkhas through the DEM data the density, highly, the area and the volume, carries on the quantitative analysis to the nebkhas, proved that uses DEM to be helpful to the nebkhas shape fine quantitative analysis.(3) By the combination of the remote sensing phantom visual interpretation technology and the type area nebkhas correlation data analysis result, this study conducts the pioneering work of the systematic analysis of the Ebinur Lake peripheral nebkhas's spatial distribution.(4) the generalized analysis nebkhas's succession rule, has testified the results obtained from the previous study of the Ebinur Lake peripheral nebkhas spatial distribution pattern. |
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