摘要
植被是城市生态系统的“肺”,研究植被覆盖度变化对城市生态环境具有一定的意义。利用1993年、2008年和2019年Landsat系列遥感影像数据,基于NDVI像元二分模型,运行ENVI5.5和ArcGIS10.3估算和分析图木舒克市植被覆盖度时空变化特征与趋势。结果表明:(1)图木舒克市植被永安坝水库东北部总体以突里买提河与克列根河为轴线、西南部总体以盖木里克河为主线,从高到低向外展布,低与中覆盖碎散式围绕高覆盖分布;(2)过去27年,图木舒克市植被覆盖面积和覆盖度均呈增加趋势,其中高植被覆盖面积比重最大,2019年相比1993年,高植被覆盖面积增加442.4 km^(2),增长了139.49%;(3)极低、低与中覆盖转移以高覆盖为主,转移比例分别为16.83%、40.66%和50.00%。
Vegetation is the“lung”of the urban ecosystem,and the study of vegetation coverage changes has certain significance for the urban ecological environment.Using the Landsat series of remote sensing image data in 1993,2008 and 2019,based on the NDVI pixel binary model,running ENVI5.5 and ArcGIS 10.3 to estimate and analyze the spatiotemporal characteristics and trends of vegetation coverage in Tumshuk.The results show that:(1)The northeast of Yong'anba Reservoir of vegetation in Tumshuk city is generally centered on the Turimati River and the Kriegen River,and the southwest is generally centered on the Gamlik River,going from high to low.Distribution,low and medium coverage scattered around high coverage;(2)In the past 27 years,the vegetation coverage area and coverage of Tumshuk City have shown an increasing trend,of which the high vegetation coverage area accounts for the largest proportion,compared with 2019 In 1993,the area of high vegetation coverage increased by 442.4 km^(2),an increase of 139.49%;(3)Very low,low and medium coverage transfers were dominated by high coverage,with transfer ratios of 16.83%,40.66%and 50.00%,respectively.
作者
白松
Bai song(Xinjiang Water Resources and Hydropower Survey and Design Institute,Urumqi 844000,Xinjiang)
出处
《陕西水利》
2021年第6期108-110,117,共4页
Shaanxi Water Resources
