| 基于SOFM网络的巴丹吉林沙漠湖泊聚类及其地下水补给来源推断 |
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| 引用本文： | 安帅,王乃昂,陈会丽,赵力强.基于SOFM网络的巴丹吉林沙漠湖泊聚类及其地下水补给来源推断[J].中国沙漠,2014,34(2):574-581. |
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| 作者姓名： | 安帅 王乃昂 陈会丽 赵力强 |
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| 作者单位： | 1. 北京大学 城市与环境学院/地表过程分析与模拟教育部重点实验室, 北京 100871;2. 兰州大学 资源环境学院/干旱区气候变化与水循环研究中心, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目(41371114);国家基础科学人才培养基金项目(J1210065)资助 |
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| 摘 要： | 引入湖泊经纬度、海拔、湖水温度、湖水pH值以及湖水Na+、K+、Mg2+、Ca2+、Cl-、SO2-4、CO2-3、HCO-3浓度等13个基本变量作为聚类指标,构建了自组织特征映射(SOFM)网络,对巴丹吉林沙漠南部共计105个常年积水湖泊进行了非线性聚类,并与基于类平均法的线性聚类分析结果作对比,得到两种聚类分析方法的结果大体一致,即以雅布赖山北东—南西走向断裂带为界,湖泊呈较明显的二聚类分布,断裂带北部的湖泊聚集一类,接近断裂带以及断裂带南部的湖泊聚为一类,这与实地考察结果相互印证。对聚类结果进行判别后发现,SOFM网络的聚类结果更为准确可靠,其在识别地理现象微小差异方面更具优势。而根据断裂带两侧不同类型湖泊的分布,可以推断巴丹吉林沙漠南部湖泊群地下水源补给空间上的非同源性,以及地下岩层组分和结构上的空间差异性。
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| 关 键 词： | 巴丹吉林沙漠 湖泊群 地下水补给 聚类分析 |
| 收稿时间： | 2013-02-21; |
The Lakes’ Clustering of the Badain Jaran Desert Based on SOFM Network and Inferences of Their Sources of Groundwater Recharge |
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| An Shuai,Wang Naiang,Chen Huili,Zhao Liqiang.The Lakes’ Clustering of the Badain Jaran Desert Based on SOFM Network and Inferences of Their Sources of Groundwater Recharge[J].Journal of Desert Research,2014,34(2):574-581. |
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| Authors: | An Shuai Wang Naiang Chen Huili Zhao Liqiang |
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| Institution: | 1. College of Urban and Environmental Sciences/Laboratory for Earth Surface Processes, Peking University, Beijing 100871, China;2. College of Earth and Environmental Sciences/Center for Climate Change and Hydrologic Cycle in Arid Region, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | This article introduced 13 basic variables including the lakes' longitude and latitude, elevation, water temperature, water pH and lake Na+, K+, Mg2+, Ca2+, Cl-, SO42-, CO32-, HCO3- concentration and took these variables as the clustering indices for nonlinear clustering of 105 perennial water lakes in the sorth of Badain Jaran Desert by building the self-organizing feature map (SOFM) network. By comparing with linear clustering results by using the group average method, we found that when 105 lakes were divided into two groups through SOFM network, the spatial boundary was generally consistent with Yabulai Mountain Northeastern-Southwestern Strike Fault Zone. The lakes appeared two clustering groups obviously, lakes which were distributed at the north of the Fault Zone gathered in one group while the rest of lakes that were close to or at the south of the fault zone got together as the other group. Meanwhile the field investigation confirmed the clustering results. After analyzing the clustering results of two methods we found that clustering results of SOFM network are more accurate and reliable, and have more advantage in identifying subtle differences of geographic phenomena. Different types of lakes distribute in different sides of the fault zone, so we infer the spatial non-heterology of the underground water recharge of lakes in the north of Badain Jaran Desert and spatial differences of underground rock structure. |
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| Keywords: | Badain Jaran Desert group of lakes cluster analysis groundwater recharge |
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