摘要
利用2002年和2009年两期LandsatTM/ETM遥感数据,以Erdas和ArcGIS软件为平台,分析了西安城区8年间的植被覆盖时空变化特征,并初步探讨了NDVI演化的驱动机制。结果表明:在2002~2009年间,西安城区植被覆盖整体发生了较大变化,其中城墙内植被由低等植被覆盖区上升为中等植被覆盖区,城北的未央区植被遭到严重破坏,三环沿线由中等植被覆盖转化为高植被覆盖区;西安城区植被覆盖的变化受自然因素影响,同时,经济快速发展与城市建设等人类生产活动是其重要驱动因素。
Based on the LandsatTM/ETM remote sensing data of 2002 and 2009,the Erdas and ArcGIS software were used as the platform to analyze the temporal and spatial variation characteristics of vegetation cover in Xi’an urban area,and the driving mechanism of NDVI evolution was discussed.The results showed that the vegetation cover in Xi’an City had undergone major changes between 2002 and 2009.Specifically,the vegetation coverage in the city wall had been improved,the vegetation in the Weiyang District of the city had been seriously damaged,and the vegetation condition along the Third Ring Road had become better;the change of vegetation cover in Xi’an city is affected by natural factors.At the same time,human production activities such as rapid economic development and urban construction are also important driving factors.
作者
张慧子
赵许宁
陈建军
Zhang Huizi;Zhao Xuning;Chen Jianjun(College of Geomatics and Geoinformatics,Guilin University of Technology,Guilin,Guangxi 541000,China)
出处
《绿色科技》
2019年第10期1-4,共4页
Journal of Green Science and Technology
基金
广西自然科学基金(编号:2018GXNSFBA281054)
桂林理工大学科研启动基金(编号:GUTQDJJ2017069)
关键词
西安城区
归一化植被指数
植被覆盖
时空变化
urban area of xi’an
NDVI
vegetation cover
spatial and temporal changes
