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遥感技术与应用  2016, Vol. 31 Issue (5): 1022-1030    DOI: 10.11873/j.issn.1004-0323.2016.5.1022
遥感应用     
基于遥感和气象数据的蒙古高原1982~2013年植被动态变化分析
张韵婕1,桂朝2,刘庆生1,刘高焕1
(1.中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京 100101;
2.易智瑞(中国)信息技术有限公司,北京 100007)
The Analysis of the Vegetation Dynamic Changes from 1982 to 2013 in the Mongolian Plateau based on Satellite Imageries and Meteorological Data
Zhang Yunjie1,Gui Zhao2,Liu Qingsheng1,Liu Gaohuan1
(1.State Key Laboratory of Resources and Environmental Information System Institute of
Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;
2.ESRI China Information Technology Co.Ltd,Beijing 100007,China)
 全文: PDF(16054 KB)  
摘要:

蒙古高原生态系统及其变化对中国北方乃至整个东北亚的生态安全有着重要影响,了解蒙古高原干旱半干旱区植被生长的动态如何在不同时间和空间尺度上响应气候变化十分必要。利用NDVI数据构建长时间序列,分析植被生长动态变化的过程和时空特征,并与气象数据进行相关性分析。主要结论如下:①NDVI的分布具有地带性;②大约39.5%的区域NDVI呈显著的增加(P=0.1),7.3%的区域NDVI显著减少(P=0.1),说明植被条件在蒙古高原有所好转;③蒙古高原NDVI的变异系数均值16.99%,这表明过去32年里植被覆盖变化情况有较强的波动性;④蒙古高原植被的生长状况与降水量有极显著的正相关关系,与气温有极显著的负相关关系。

关键词: 蒙古高原NDVI植被覆盖时空变化    
Abstract:

The Mogolian Plateau (MP) is one of the typical arid regions around the world.The ecosystem of this region and its change have a lot to the areas surrounding the Mogolian Plateau.In particular,the vegetation system of the Mongolian Plateau plays an important ecological role in northern China and the whole of Northeast Asia.Thus,it is urgent to do research on the vegetation system to see how it has changed throughout these years and detect the trend.In this study,we investigate the spatial\|temporal pattern,processes and driver,and the degree and mechanism of grassland dynamics in the MP using the NOAA/AVHRR 10\|day maximum NDVI composite data of 1982~1999 and MODIS 16 day maximum NDVI data of 2000~2013 by building a conversion relationship of them.based on time series analysis methods,we calculate the slope of the fitted line of NDVI for each single grid cell,which is set as the indicator of the intensity of dynamic changes.Combined with meteorological data,we use the correlation analysis to explore how the natural factors affect the ecosystem.The results show that the temperature,precipitation and the vegetation are characterizing of zonality in Mongolia Plateau.Non\|vegetated area (NDVI<0.1) and Sparsely vegetated area (0.1

Key words: Mongolian Plateau    NDVI    Vegetation cover    Spatial and temporal changes
收稿日期: 2015-06-05 出版日期: 2016-11-25
:  P 237  
基金资助:

国际科技合作专项项目(2012DFG22050\,2013DFA91700),中国科学院战略性先导专项项目(XDA05050601),国家科技支撑计划项目(2013BAD05B03)。

通讯作者: 刘庆生(1976-),男,山西忻州人,副研究员,〖JP3〗主要从事遥感与地理信息系统在资源环境评价中的应用研究。Email:liuqs@lreis.ac.cn。   
作者简介: 张韵婕(1991-),女,河南商丘人,硕士研究生,主要从事遥感地学与计算研究。Email:zhangyj.13s@igsnrr.ac.cn。
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引用本文:

张韵婕,桂朝,刘庆生,刘高焕. 基于遥感和气象数据的蒙古高原1982~2013年植被动态变化分析[J]. 遥感技术与应用, 2016, 31(5): 1022-1030.

Zhang Yunjie,Gui Zhao,Liu Qingsheng,Liu Gaohuan. The Analysis of the Vegetation Dynamic Changes from 1982 to 2013 in the Mongolian Plateau based on Satellite Imageries and Meteorological Data. Remote Sensing Technology and Application, 2016, 31(5): 1022-1030.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2016.5.1022        http://www.rsta.ac.cn/CN/Y2016/V31/I5/1022

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