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依据Q-型系统聚类分析方法,选取巴丹吉林沙漠湖泊水化学离子为变量,将研究区划分为A、B、C三个分带(区)。同时,利用遥感影像资料提取相应湖泊的面积信息,并进行等级划分,与湖泊水化学特性作对比分析,以探究二者的关系。结果表明:位于沙漠东南边缘的A类湖泊沿东北-西南向呈带状分布,以淡水湖和微咸水湖为主,湖泊面积极小;B类湖泊占据了腹地湖区的绝大部区域,沿西北-东南呈带状分布,以面积大,盐分高为主要特点,且与A湖泊带无交叉区域。C类湖泊数量少,分散在A、B湖泊带的边缘地带,但理化特征却不同于周边湖泊,极有可能是由局部地理环境造成的主要湖泊带周边的特例。聚类结果与面积分级的综合分析表明,沙漠南北湖区水化学与面积不完全相关。
According to Q-type cluster analysis method, water chemical ions in Badain Jaran Desert Lake were selected as variables, and the study area was divided into three sub-zones A, B and C. At the same time, the remote sensing image data was used to extract the area information of the corresponding lakes, and the classification was made to compare with the chemical characteristics of lakes to explore the relationship between the two. The results show that the type A lakes located on the southeastern margin of the desert distribute along the northeast-southwest belt, with freshwater lakes and brackish lakes as the main area, and the lakes area is extremely small. Class B lakes occupy most of the hinterland lakes, - Southeastern was zonal distribution, with large area, high salinity as the main feature, and no cross with the A lakes area. The small number of Class C lakes scattered on the edge of Lake A and B lakes, but their physical and chemical characteristics are different from those of the surrounding lakes are most likely to be the special cases of the periphery of the main lakes caused by the local geographical environment. Comprehensive analysis of the clustering results and area grading shows that water chemistry and area in the desert Nanbeihu Lake area are not completely related.