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遥感技术与应用  2011, Vol. 26 Issue (6): 782-790    DOI: 10.11873/j.issn.1004-0323.2011.6.782
遥感应用     
2001~2010年松木希错流域植被动态变化遥感研究
吴雪娇1,3 ,鲁安新1,2,王丽红1,3,张华伟1,3
(1.中国科学院寒区旱区环境与工程研究所 冰冻圈科学国家重点实验室,甘肃 兰州730000;
2.中国科学院对地观测与数字地球科学中心,北京100094;3.中国科学院研究生院,北京100049)
Temporal Variation of Vegetation in Songmuxicuo Basin as Detected by MODIS Remote Sensing during 2001~2010
Wu Xuejiao1,3,Lu Anxin1,2,Wang Lihong1,3,Zhang Huawei1,3
(1.State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China;2.Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100094,China;3.Graduate University of Chinese Academy of Sciences,Beijing 100049,China)
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摘要:

遥感在区域植被变化研究中具有十分重要的作用,能为大面积监测植被状况的演化过程提供技术支持。NDVI在高植被覆盖地区存在过饱和现象,对稀疏地区的植被变化尤其敏感。以古里雅冰帽南部的松木希错流域植被相对稀疏区域为研究区,基于MODIS NDVI数据和逐月气象观测数据,以及RS和GIS平台,对该区域2001~2010年主要植被变化趋势进行了初步研究,并对植被变化与气候驱动因子的关系进行了分析和探讨。结果表明:① 2001~2010年间该区域的植被活动有加强趋势;② NDVI表明研究区植被生长季较短(5~9月),NDVI浮动区间为0.11~0.13,低于全国水平(0.3~0.35),也低于全球稀疏灌丛的平均水平(0.2~0.4);③NDVI与年均气温整体上呈正相关,而与年降水量相关性不强。表明近年来持续升温是影响该区域植被活动加强的最主要原因。

关键词: NDVI气温遥感松木希错流域    
Abstract:

Remote sensing plays an important role in regional vegetation change research and provides new technical possibilities for global vegetation temporal and spatial variation.NDVI is supersaturated in regions with good vegetation,but is so sensitive in areas with sparse vegetation cover.We selected Songmuxicuo basin with sparse vegetation in the south of Guliya Ice Cap as our research region,and used NDVI dataset derived from imagery obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) to build the time series of vegetation change in recent 10 years based on RS and GIS technology.Then we analysed the relationship between vegetation change and climatic factors.① The change demonstrated that the area of vegetation covers increase in recent 10 years in south of Guliya Ice Cap in Tibet an Plateau.② NDVI character showed that the grow season is short,and the NDVI floating interval is 0.11~0.13,lower than nationwide level(0.3~0.35),also lower than global open shrublands mean NDVI(0.2~0.4).③ The correlation analysis between NDVI with the temperature and precipitation in the south of Guliya Ice Cap was carried out.There was significant positive correlation between NDVI and temperature and precipitation was not strong correlation relatively with NDVI in the region.It implied that the increasing temperature recent years is the mean factor to make vegetation covers increase in the region.

Key words: NDVI    Temperature    Remote sensing    Songmuxicuo basin
收稿日期: 2011-05-08 出版日期: 2012-01-10
:  TP 79  
基金资助:

全球变化国家重大科学研究计划(2010CB951403),国家自然科学基金重点项目(40930526)资助。

 

通讯作者: 鲁安新(1967-),男,河南邓州人,研究员,主要从事寒区旱区遥感与地理信息系统应用研究。     E-mail: lwj@lzb.ac.cn
作者简介: 吴雪娇(1986-),女,黑龙江五大连池人,硕士研究生,主要从事寒区旱区遥感与地理信息系统应用研究。Email:wxjiao608@126.com。
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引用本文:

吴雪娇,鲁安新,王丽红,张华伟. 2001~2010年松木希错流域植被动态变化遥感研究[J]. 遥感技术与应用, 2011, 26(6): 782-790.

Wu Xuejiao,Lu Anxin,Wang Lihong,Zhang Huawei. Temporal Variation of Vegetation in Songmuxicuo Basin as Detected by MODIS Remote Sensing during 2001~2010. Remote Sensing Technology and Application, 2011, 26(6): 782-790.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.6.782        http://www.rsta.ac.cn/CN/Y2011/V26/I6/782

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