干旱区生态环境知识资源中心(Arid): 冰川分布格局对地理因子响应机制

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	冰川分布格局对地理因子响应机制
其他题名	Response Mechanism of Glacial Distribution Patterns to Geographical Factors
	张正勇; 刘琳; 徐丽萍
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2018
卷号	27 期号:2 页码:290-296
中文摘要	为探究高寒区冰川分布格局及其对地理位置、地形和气候因子的响应机理,以新疆玛纳斯河流域为研究样区,以TM影像、DEM和气象站点资料为数据源,借助RS和GIS技术提取冰川边界信息,采用线性回归模型估算研究区气温和降水数据并进行栅格计算,基于DEM数据提取山区坡度和坡向等地形信息,与所提取的研究区冰川分布格局信息叠加后得到了布局均匀的213个冰川样点,并获取各样点的地理位置(经纬度)、地形特征(高程、坡度和坡向)、NDSI、气温和降水等属性信息,最后运用偏最小二乘法(PLS)构建了冰川-地形-气候遥感反演模型,并进行模型有效性和适用性检验。分析结果表明:该模型能够解释78.2%以上的因变量变异,对研究区冰川分布格局的总预测能力达到76.9%,有效性检验结果表明模型效果较为显著,有效克服了自变量间多重相关性的干扰;同时发现PLS方法对冰川分布格局及其影响因子的相关性分析具有较好的分析能力。气候变化是影响研究区冰川分布格局动态变化的最重要因子,地形因子对冰川的发育和积累具有决定性作用,而地理位置的贡献相对较小。另外,为了能更好地模拟冰川分布格局,在以后研究中应将影响冰川分布格局变化的其他因子也纳入模型中,如山区风向、风力、水汽压、相对湿度及下垫面性质等对冰川分布和变化都有一定影响。该研究可为区域气候和水文研究提供理论参考,对干旱区水资源的合理利用亦具有重要指导意义。
英文摘要	To explore the distribution patterns of alpine glaciers and their response mechanisms to geographical location, topographic, and climatic factors, we used the Manas River Basin in Xinjiang as the study area. We selected TM images, DEM, and meteorological station data as our data sources, and with the aid of remote sensing (RS) and GIS technology, we extracted the glacial boundary information and used a linear regression model to estimate the temperature and precipitation data of the studied region and to carry out grid calculation. Based on the DEM data, we extracted topographic information, such as the slope and aspect of the mountainous region. After overlaying this information onto the studied glacial region, we obtained 213 uniformly distributed glacier sample points and their attribute data, such as geolocation (latitude and longitude), topographic features (elevation, slope, and aspect), Normalized Differential Snow Index (NDSI), atmospheric temperature and precipitation. Finally, we constructed a glacier-topography-climate RS inversion model using the partial least squares (PLS) and tested its effectiveness and adaptability. The results showed that the model could explain more than 78.2% of the variance of the dependent variables and that its overall ability to estimate the glacial distribution patterns of the studied region reached 76.9%. The effectiveness testing highlighted the efficacy of the model and its ability to successfully overcome the interference caused by the multiple correlations of the independent variables. Simultaneously, we found that PLS method had better analytical ability in relation to glacier distribution pattern and its influencing factors. Analysis of the response mechanism of the glacial distribution patterns to the influencing factors in the study region showed that climate change was the most important factor affecting the dynamic changes in the glacial distribution patterns. Topographic factors played a decisive role in glacier development and accumulation, whereas geolocation was a relatively small contributor. Moreover, to improve the glacial distribution modeling, in future research, other factors that significantly affect the distribution patterns should be introduced into the model, e.g., wind direction and strength, water vapor pressure, relative humidity, and the properties of the underlying surface of the studied mountainous region. This study will be a theoretical reference for research on regional climate and hydrology and provide significant guidance for rational utilization of water resources in arid areas.
中文关键词	冰川格局 ; 地形 ; 气候 ; 模拟
英文关键词	PLS PLS glacier cover topographic factors climatic factors simulate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6171711
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238069
作者单位	石河子大学, 石河子, 新疆 832000, 中国
推荐引用方式 GB/T 7714	张正勇,刘琳,徐丽萍. 冰川分布格局对地理因子响应机制[J]. 石河子大学,2018,27(2):290-296.
APA	张正勇,刘琳,&徐丽萍.(2018).冰川分布格局对地理因子响应机制.生态环境学报,27(2),290-296.
MLA	张正勇,et al."冰川分布格局对地理因子响应机制".生态环境学报 27.2(2018):290-296.