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	锡林郭勒盟不同草原类型EVI的时空变化及其对气候的响应
其他题名	Temporal and spatial variations of EVI and its response to influence of climate with different grassland types in Xilin Gol League
	田志秀 1; 张安兵 2; 王贺封 2; 曹媛 2; 范倩倩 1
来源期刊	草业科学
ISSN	1001-0629
出版年	2019
卷号	36 期号:2 页码:346-358
中文摘要	基于2000-2014年锡林郭勒地区的MODIS/EVI数据,辅以时间序列谐波分析法(HANTS)、最大值合成法,在此基础上结合气象数据,利用趋势线分析和相关性分析等方法,探究2000-2014年锡林郭勒盟不同草原类型时空变化及其对气候的响应情况。结果表明,1)锡林郭勒盟各类型植被EVI值从5月开始增长,7、8月达到峰值。温性草原化荒漠类、温性山地草甸类和沼泽类植被呈降低趋势,而其他类型植被呈上升趋势。2)锡林郭勒盟大部分区域的植被无明显变化,位于中部、南部、西南部、二连浩特、苏尼特左旗、东乌珠穆沁旗和西乌珠穆沁旗等区域的温性草原类、温性荒漠草原类、温性草甸草原类、高寒草原类、温性荒漠类等植被呈现出缓慢改善的变化,而位于西乌珠穆沁旗东部的温性山地草甸类和东乌珠穆沁旗中部的沼泽类植被呈轻度退化趋势。3)植被EVI主要受平均气温、降水量、平均相对湿度、日照时数的正向调控,受平均风速的制约影响。此外,低地盐化草甸类、改良草地、温性草原类、温性荒漠草原类EVI与气象因子的相关性较高,高寒草原类EVI与气象因子的相关性较低。总体上,2000-2014年锡林郭勒植被状况保持稳定并有所改善,气象因子中的平均气温与各类型植被变化关系密切。
英文摘要	MODIS/EVI data from 2000-2014 were combined using the Harmonic Analysis of NDVI Time-Series (HANTS) and Maximum Value Composites method (MVC) to investigate spatio-temporal variations of vegetation EVI and its climatic factors.Trend line and correlation analyses were used to examine Xilin Gol League Grassland from 2000 to 2014,providing a scientific basis for the protection of vegetation.Results showed that the EVI value of different vegetation increased after May,peaking in July or August.The Warm Grassland Desert,Warm Mountain Meadow,and Swamp vegetation showed a downward trend,while other vegetation types showed an upward trend.Vegetation in most parts of the Xilin Gol League had no significant changes in spatial pattern.It keeps an improved trend in the vegetation that the Warm Grassland,Warm Desert Grassland,Warm Meadow Grassland,Alpine Grassland and Warm Desert in the central,southern,southwestern Xilin Gol League,Erenhot,Sonid Left,East Ujimqin,and West Ujimqin.However,the vegetation in Low-salinity Meadow,Improved Grassland,and Warm Grassland Desert showed slowly decreasing trends in the northern,southern,and western parts of the Xilin Gol League.Vegetation EVI was mainly controlled by mean temperature,precipitation,mean relative humidity,and sunshine hours,which is affected by the average wind speed.Temperature was the most important factor affecting vegetation growth.The correlation between EVI and meteorological factors was high in Low-salinity Meadow,Improved Grassland,Warm Grassland,and Warm Desert Grassland and low in Alpine steppe.The improved area was larger than the degraded area in Xilin Gol,and vegetation was mainly controlled by temperature.
中文关键词	植被覆盖 ; 驱动因子 ; 气温 ; 降水 ; 时间序列谐波分析 ; 相关性
英文关键词	MODIS/EVI MODIS/EVI vegetation coverage driving factors temperature precipitation the harmonic analysis of NDVI time-series correlation
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:6449533
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238949
作者单位	1.河北工程大学地球科学与工程学院, 邯郸, 河北 056038, 中国; 2.河北工程大学矿业与测绘工程学院, 邯郸, 河北 056038, 中国
推荐引用方式 GB/T 7714	田志秀,张安兵,王贺封,等. 锡林郭勒盟不同草原类型EVI的时空变化及其对气候的响应[J],2019,36(2):346-358.
APA	田志秀,张安兵,王贺封,曹媛,&范倩倩.(2019).锡林郭勒盟不同草原类型EVI的时空变化及其对气候的响应.草业科学,36(2),346-358.
MLA	田志秀,et al."锡林郭勒盟不同草原类型EVI的时空变化及其对气候的响应".草业科学 36.2(2019):346-358.