CAJ | 학술논문

植被覆盖度是用来衡量地表植被状况的重要指标之一.植被覆盖度及其变化也是区域生态环境变化的重要指标.拟基于郑州市1994年7月2日、2002年6月19日、2009年6月29号和2013年6月28日的TM/ETM+遥感影像数据，利用ENVI 5.1软件，分别采用像元二分法和监督分类法，提取郑州市植被覆盖度信息，并对比分析研究期间郑州市植被覆盖度的变化情况.从而得到郑州市植被覆盖度在研究期间的变化趋势.结果表明：郑州市植被覆盖度呈先下降后上升的变化趋势，但区域内分布不平衡；在提取植被覆盖度时，像元二分模型比监督分类法更具有优势.
식피복개도시용래형량지표식피상황적중요지표지일.식피복개도급기변화야시구역생태배경변화적중요지표.의기우정주시1994년7월2일、2002년6월19일、2009년6월29호화2013년6월28일적TM/ETM+요감영상수거，이용ENVI 5.1연건，분별채용상원이분법화감독분류법，제취정주시식피복개도신식，병대비분석연구기간정주시식피복개도적변화정황.종이득도정주시식피복개도재연구기간적변화추세.결과표명：정주시식피복개도정선하강후상승적변화추세，단구역내분포불평형；재제취식피복개도시，상원이분모형비감독분류법경구유우세.
The vegetation coverage is one of the main indicators to measure vegetation. Vegetation coverage and its change is an important index of regional ecosystem environment change. Based on the TM/ETM+ images of Zhengzhou City in June 28,2013,June 29,2009,June 19,2002 and July 2,1994,with ENVI 5. 1 software,the pixel dichotomy principle and supervised classification is gained. And through the comparative analysis of the message of Zhengzhou City’s vegetation coverage during the study period,the change trend of vegetation cover-age in Zhengzhou City is gained. The results show that the vegetation coverage of Zhengzhou has the tendency of decrease first and increase afterwards. But the spatial distribution is unbalanced. Pixel dichotomy has more advan-tges than supervised classification in gathering vegetation coverage.