| 基于RS的汾河流域植被覆盖变化研究 |
| |
| 引用本文： | 侯志华,马义娟,葛虹.基于RS的汾河流域植被覆盖变化研究[J].干旱区资源与环境,2013(2):162-166. |
| |
| 作者姓名： | 侯志华 马义娟 葛虹 |
| |
| 作者单位： | 太原师范学院城市与旅游学院 |
| |
| 基金项目： | 山西省高等学校人文社会科学重点研究基地项目:汾河流域生态环境脆弱性评估及管理对策研究(2011327);山西省科技攻关项目(20100311128):山西省生态系统脆弱性评价与监测预警研究;山西省软科学项目(2008041037-03):汾河上游生态环境建设对策研究资助 |
| |
| 摘 要： | 以汾河流域1990年和2007年TM影像为数据源,基于像元二分模型,利用归一化植被指数ND-VI,提取了两期的植被覆盖度,对17年来的植被覆盖变化情况进行统计分析,并探讨了其变化原因。研究结果表明:17年来汾河流域在人为影响的主要驱动下,使原本脆弱的生态环境进一步恶化,植被退化现象明显。1990年到2007年汾河流域植被盖度整体降低,由中、中高植被向低、中低植被转移,且不同地区变化幅度明显不同,吕梁区、临汾区降低幅度最大,分别为8.92%和7.68%,其次是晋中地区,降低幅度为4.07%;忻州区、运城区变化幅度不大,太原区整体上升了0.26%,但各地区都存在明显的植被退化现象。
|
| 关 键 词： | 植被覆盖度 像元二分模型 汾河流域 |
The vegetation cover change in Fen River basin |
| |
| HOU Zhihua,MA Yijuan,GE Hong.The vegetation cover change in Fen River basin[J].Journal of Arid Land Resources and Environment,2013(2):162-166. |
| |
| Authors: | HOU Zhihua MA Yijuan GE Hong |
| |
| Institution: | (College of City and Tourism,Taiyuan Normal University,Taiyuan,Shanxi 030012,P.R.China) |
| |
| Abstract: | Based on TM remote sensing images in 1990 and 2007,the vegetation coverager was extracted using the Normalized Vegetation Index(NDVI) data and the dimidiate pixel model.Then changes of vegetation cover in 17 years were statistically analyzed and their causes were discussed.Results showed that vegetation cover rate was decreased in whole basin from 1990 to 2007,and the change range was different in different regions.The biggest decreased degree was in Lüliang and the Linfen region,and the decrease range was 8.92% and 7.68%;the second name was Jinzhong region(4.07%);the Xinzhou and the Yuncheng region had little change;the Taiyuan region increased by 0.26% in whole.The human impact was main driving factor to make the local ecological environment more worse. |
| |
| Keywords: | vegetation coverage dimidiate pixel model Fen River basin |
| 本文献已被 CNKI 等数据库收录！ |
|
