干旱区生态环境知识资源中心(Arid): 基于MODIS NDVI的锡林郭勒草原近10年的时空动态

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	基于MODIS NDVI的锡林郭勒草原近10年的时空动态
其他题名	Temporal and spatial dynamic of Xilingol steppe based on MODIS NDVI in recent ten years
	张圣微 1; 赵鸿彬 2; 张发 1; 尚士友 3
来源期刊	草业科学
ISSN	1001-0629
出版年	2014
卷号	31 期号:8 页码:1416-1423
中文摘要	利用MODIS数据计算得到的归一化差值植被指数(NDVI),对内蒙古自治区锡林郭勒草原不同类型草地近10年(2003 -2012)生长季(4-10月)植被状况时空特征和变化情况进行研究。结果表明,锡林郭勒草原NDVI总体表现为由东北向西南递减的规律,空间差异2005年最大,2007年最小,且不同年度间相同类型草原空间变化基本一致。全区整体年际间变化表现为2012年最大,2003年次之;沙地草原和荒漠草原在2005年变化最小,波动主要在2004 2006年;草甸草原和典型草原则在2007年变化最小,波动主要在2007 - 2009年。空间变异分析显示,2003 - 2012年沙地草原变异系数(CV)小于0. 1,属非常稳定型,草甸草原、典型草原和荒漠草原的CV值依次增大,但都介于0. 1~0. 2,属于稳定型。说明近10年来锡林郭勒草原状况较为稳定。通过对区域主要气象要素与NDVI间关系的分析,得到NDVI主要受降水影响,二者之间存在显著正相关关系,相关系数高达0.83;日照时数与NDVI间存在相反的变化趋势;而平均气温与NDVI没有明显关系。
英文摘要	In the present study, the normalized difference vegetation index (NDVI) estimated from MODIS data were employed to analyze the temporal and spatial dynamic of different grassland types during growth season (April to October) in the recent 10 years (from 2003 to 2012) in Xilingol. The NDVI decreased from northeast to southwest in Xilingol in spatial. The maximum spatial differences occurred in 2005 and the minimum spatial differences occurred in 2007. The spatial variation of the same grassland type was similar during the study period. Temporal series analysis showed that the whole regional NDVI in 2012 was the maximum which followed by 2003. However, the minimum regional NDVI variations occurred in different period for different grasslands. For example, sandy grassland and desert steppe had minimum regional NDVI in 2005 and major NDVI fluctuations from 2004 to 2006, however, meadow steppe and typical steppe had minimum regional NDVI in 2007 and major NDVI fluctuations from 2007 to 2009.Spatial variation analysis showed the coefficient of variation (CV) of sandy grassland from 2003 to 2012 was less than 0.1 which indicated this type grassland was very stabilization.The CV of meadow steppe, typical steppe and desert steppe gradually increase which also was stable at 0.1 to 0.2.These results indicated that the ecological vulnerability of Xilingol was stabilization.The correlation analysis between main meteorological elements and NDVI indicated that there was a significant positive correlation between NDVI and precipitation which has a coefficient of 0.83.However, there was negative correlation between sunshine period and NDVI and no significant relationship between average temperature and NDVI.
中文关键词	内蒙古草原 ; 遥感 ; 植被指数 ; 变异系数 ; 时空动态 ; 气象要素
英文关键词	Inner Mongolia steppe remote sensing NDVI CV temporal and spatial dynamic meteorological elements
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5222787
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230846
作者单位	1.内蒙古农业大学水利与土木建筑工程学院, 呼和浩特, 内蒙古 010018, 中国; 2.内蒙古农业大学生命科学学院, 呼和浩特, 内蒙古 010018, 中国; 3.内蒙古农业大学机电工程学院, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	张圣微,赵鸿彬,张发,等. 基于MODIS NDVI的锡林郭勒草原近10年的时空动态[J]. 内蒙古农业大学,2014,31(8):1416-1423.
APA	张圣微,赵鸿彬,张发,&尚士友.(2014).基于MODIS NDVI的锡林郭勒草原近10年的时空动态.草业科学,31(8),1416-1423.
MLA	张圣微,et al."基于MODIS NDVI的锡林郭勒草原近10年的时空动态".草业科学 31.8(2014):1416-1423.