艾比湖周边广泛分布着湖滨沙地化生物与风力作用下形成的灌丛沙堆。灌丛沙堆的退化演替过程通常是自然因素和人为活动对生态系统的压力综合作用的结果,是反映生态变化和气候演变的重要标志之一,因此,灌丛沙堆的产生和衰亡与土地荒漠化正逆过程关系密切。研究灌丛沙滩的空间分布格局现状,对荒漠化防治以及区域生态保护具有重要作用。本文尝试以点线面调查相结合的方法,以RTK为平台重点对艾比湖周边典型样方内灌丛沙堆的形态特征、植物生态学特征进行了实测和采样分析,利用GIS技术生成数字高程模型(Digital Elevation Model,DEM),结合对艾比湖的高分辨率遥感影像进行目视解译的结果,从灌丛沙堆的植被类型、密度、高度、面积和体积几个方面进行定量描述,从而研究艾比湖周边灌丛沙堆的空间分布格局,为今后的监测工作提供基础数据,并为以后的研究工作提供新的技术手段和方法。
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.