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当前位置: 首页 > 文章 > 叶尔羌河流域植被覆盖度时空变化分析 西部林业科学 2019,48 (4) 86-93
Position: Home > Articles > Spatial and Temporal Changes of Vegetation Coverage in the Yarkant River Basin Journal of West China Forestry Science 2019,48 (4) 86-93

叶尔羌河流域植被覆盖度时空变化分析

作  者：
李晓蕾;徐丽萍;位宏;薛凯
单  位：
南京师范大学地理科学学院;石河子大学理学院
关键词：
植被覆盖度;气象因子;地形因子;叶尔羌河流域
摘  要：
内陆河流域植被覆盖度变化特点及趋势是反映全球气候变化的基础指标之一.基于MODIS NDVI、DEM数据及气象站点记录数据,应用趋势分析、 偏相关分析和空间统计等方法,探讨2000-2015年新疆叶尔羌河流域植被覆盖时空变化特征及趋势,并分析其与气象因子及地形因子间的相关性.结果表明:(1)2000-2015年间叶尔羌河流域植被覆盖主要以低覆盖度为主,平均植被覆盖度为0.233,16年来植被覆盖度呈微弱增加趋势.(2)叶尔羌河流域植被覆盖主要集中在流域中部农耕区,植被覆盖空间分布总体特征表现为距叶尔羌河越近,植被覆盖度越高.(3)相关性分析结果显示研究区植被覆盖度与温度呈正相关,与降水量间的相关性不显著.(4)植被覆盖度随地形因子的变化存在差异性.随着坡度的增加,植被覆盖度呈降低趋势,坡度越大,植被覆盖度越小;植被覆盖度在各个坡向上的差异不显著.总体上,阳坡的植被覆盖度优于阴坡;随着海拔的增加,植被覆盖度变化情况较为复杂.
译  名：
Spatial and Temporal Changes of Vegetation Coverage in the Yarkant River Basin
作  者：
LI Xiao-lei;XU Li-ping;WEI Hong;XUE Kai;College of Science,Shihezi University;School of Geography Science,Nanjing Normal University;Key Laboratory of Virtual Geographical Environment;
关键词：
vegetation coverage;;meteorological factor;;topographical factor;;Yarkant River Basin
摘  要：
Characteristics and trends of vegetation cover change in inland river basins are one of the basic indicators reflecting global change.Based on MODIS NDVI,DEM data and meteorological station records data,the temporal and spatial characteristics and trends of vegetation cover in the Yarkant River Basin from 2000 to 2015 were discussed by using trend analysis,partial correlation analysis and spatial statistics.The correlation between vegetation cover and meteorological and topographic factors was also analyzed.The results show that:(1)During 2000 to 2015,the vegetation coverage in Yarkant River Basin was mainly low,with an average vegetation coverage of 0.233.The vegetation coverage increased slightly in the past 16 years.(2)Vegetation distribution in the Yarkant River Basin is mainly concentrated in the agricultural areas of the basin.The overall spatial distribution of vegetation coverage is closer to the Yarkant River and the higher the vegetation coverage.(3)Correlation analysis showed that the vegetation coverage in the study area was positively correlated with temperature,and the correlation with precipitation was not significant.(4)Vegetation coverage varies with topographic factors.Vegetation coverage decreases with the increase of slope,the larger the slope,the smaller the vegetation coverage.The difference of vegetation coverage in each aspect is not significant.In general,the vegetation coverage of the sunny aspect is better than that of the shady aspect.As the altitude increases,the vegetation coverage changes more complicated.

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