346-358草 业 科 学第 36 卷第 2 期2/2019PRATACULTURAL SCIENCE Vol.36, No.2
DOI: 10.11829/j.issn.1001-0629.2018-0233
田志秀,张安兵,王贺封,曹媛,范倩倩. 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, 2019, 36(2): 346-358.
TIAN Z X, ZHANG A B, WANG H F, CAO Y, FAN Q Q. Temporal and spatial variations of EVI and its respon to influence of climate with different grassland types in Xilin Gol League. Pratacultural Science, 2019, 36(2): 346-358.
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
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五点田志秀1,张安兵2,王贺封2,曹 媛2,范倩倩1
(1. 河北工程大学地球科学与工程学院,河北 邯郸 056038;2. 河北工程大学矿业与测绘工程学院,河北 邯郸 056038)rockport
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。
关键词:MODIS/EVI;植被覆盖;驱动因子;气温;降水;时间序列谐波分析;相关性
中图分类号:S812.1 文献标志码:A 文章编号:1001-0629(2019)02-0346-13
Temporal and spatial variations of EVI and its respon to influence of climate with different勒克洛斯
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grassland types in Xilin Gol League
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TIAN Zhixiu1, ZHANG Anbing2, WANG Hefeng2, CAO Yuan2, FAN Qianqian1
(1. School of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, Hebei, China;
绯闻女孩第二季下载2. School of Mining and Geomatics, Hebei University of Engineering, Handan 056038, Hebei, China)
Abstract: 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 analys were ud 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 incread after May, peaking in July or August. The Warm Grassland Dert, 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 Dert Grassland, Warm Meadow Grassland, Alpine Grassland and Warm Dert in the central, southern, southwestera few
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收稿日期:2018-04-17 接受日期:2018-07-04
基金项目:国家863计划课题(2015AA123901);河北省自然基金项目(D2015402134、D2017402159)
第一作者:田志秀(1993-),女,天津宁河人,在读硕士生,主要从事植被遥感研究。E-mail:
通信作者:王贺封(1980-),男,江西抚州人,讲师,硕导,博士,主要从事GIS与遥感应用研究。E-mail:
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