摘要
为揭示有色金属资源型城市植被覆盖度变化特征,基于GEE(Google Earth Engine)平台获取2000-2019年MOD13Q1 NDVI数据,采用像元二分模型和一元线性回归法分析铜陵市植被覆盖度时空变化。结果表明:(1)2000-2009年铜陵市植被覆盖度呈下降趋势,2010-2019年呈现上升趋势;(2)铜陵市植被覆盖度等级主要为中高和高植被覆盖度,等级转化主要发生在中、中高和高植被覆盖度之间;(3)植被覆盖度显著改善和显著退化区域所占比例分别为62.38%和28.07%,空间变化趋势以改善为主。研究结果可为铜陵市的植被保护、生态环境质量评价及矿山的绿色发展提供科学参考和依据。
In order to reveal the change characteristics of vegetation coverage in non-ferrous metal resource-based cities,Based on the data of MOD13Q1 NDVI from 2000 to 2019 obtained on the GEE(Google Earth Engine)platform,the temporal and spatial changes of vegetation coverage were analyzed by pixel binary model method and univariate linear regression method.The results showed that:(1)The vegetation coverage in Tongling City showed a downward trend from 2000 to 2009 and an upward trend from 2010 to 2019;(2)The vegetation coverage grade of Tongling City was mainly medium high and high vegetation coverage,and the grade transformation mainly occured between medium,medium high and high vegetation coverage;(3)The proportion of areas with significant improvement and significant degradation of vegetation coverage was 62.38%and 28.07%respectively.The spatial change trend was mainly improvement.The results can provide scientific reference and basis for vegetation protection,ecological environment quality assessment and green development of Mines in Tongling City.
作者
包勤跃
谷正楠
张震
BAO Qin-yue;GU Zheng-nan;ZHANG Zhen(Mineral resources center of Tongling Nonferrous Metals Group Co.,Ltd.,Anhui Tongling 244000,China;School of Spatial Informatics and Geomatics Engineering,Anhui University of Science and Technology,Anhui Huainan 232001,China)
出处
《世界有色金属》
2022年第14期169-172,共4页
World Nonferrous Metals
关键词
GEE
铜陵市
植被覆盖度
时空变化
GEE
Tongling City
Vegetation coverage
Spatiotemporal variations