测绘通报 ›› 2018, Vol. 0 ›› Issue (6): 34-40.doi: 10.13474/j.cnki.11-2246.2018.0172

• 学术研究 • 上一篇    下一篇

利用MODIS NDVI进行淮南矿区植被覆盖度动态监测

汪桂生, 仇凯健   

  1. 安徽理工大学测绘学院, 安徽 淮南 232001
  • 收稿日期:2017-08-28 出版日期:2018-06-25 发布日期:2018-07-07
  • 作者简介:汪桂生(1986-),男,博士,讲师,主要从事生态环境遥感与地理信息系统应用研究。E-mail:wangguishengip@163.com
  • 基金资助:
    安徽理工大学青年教师科学研究基金(QN201639)

Dynamic Monitoring of Vegetation Coverage in Huainan Mining Area Based on MODIS NDVI

WANG Guisheng, QIU Kaijian   

  1. School of Geomatics, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2017-08-28 Online:2018-06-25 Published:2018-07-07

摘要: 为了分析2005-2014年10年间淮南矿区的植被覆盖演化并为矿区生态恢复提供科学参考,基于像元二分模型并利用每16 d周期的MODIS NDVI时间序列产品提取了2005年、2008年、2011年、2014年淮南矿区植被覆盖度,并从时序演化、数量转移和空间演化3个方面分析了植被覆盖的时空演化特征。结果表明:监测时段内年际NDVI均值由2005-2008年呈下降趋势,2008-2015年呈现稳步上升趋势;监测时间内区域平均植被覆盖度分别为0.722 3、0.701 7、0.718 1和0.702 8,平均减幅为2.7%;较高植被覆盖的面积是区域内主导植被覆盖,占整个研究区面积的50%,中、低和无植被覆盖面积在监测时间内保持稳定且面积均不足200 km2,表明植被覆盖状况总体良好;植被覆盖等级转化主要以高覆盖和较高覆盖之间的转化为主,稳定是植被覆盖的主要演化状态,而植被的轻度退化与交替演变趋势明显。

关键词: 淮南矿区, 植被覆盖度, 时空演化, 遥感监测, MODIS NDVI

Abstract: The aim of this research is to analyze the evolution of vegetation cover in the Huainan mining area during the period of 2005-2014 and provide scientific references for the ecological restoration of the mining area.Based on the dimidiate pixel model and the MODIS NDVI time series products obtained every 16 days,the vegetation coverage of 2005,2008,2011 and 2014 in Huainan mining area was extracted.The temporal and spatial evolution characteristics of vegetation cover were analyzed from three aspects:temporal evolution,quantity transfer and spatial evolution.The results show that the average NDVI in the monitoring period decreased from 2005 to 2008 and increased from 2008 to 2015.The average vegetation coverage in the monitoring period was 0.722 3,0.701 7,0.718 1 and 0.702 8,respectively,with the average decrease rate of 2.7%.The area covered by the higher vegetation was the dominant vegetation cover in the study area,accounting for 50% of the total area of the study area,while the medium,low and no vegetation cover area was stable in the monitoring time,with their areas less than 200 km2,indicating the vegetation cover was generally in good condition.The transformation of vegetation cover was mainly dominated by the transformation between the relatively high coverage and high coverage.The stability condition was the main evolution direction of vegetation cover,while the alternation between mild degradation and mild improvement of vegetation were obvious.

Key words: Huainan mining area, vegetation coverage, spatiotemporal revolution, remote sensing monitoring, MODIS NDVI

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