中蒙边境地区草原火时空分布特征分析

发布时间：2018-03-06 08:49

本文选题：中蒙边境　切入点：草原火灾　出处：《灾害学》2016年03期 　论文类型：期刊论文

【摘要】：草原火灾是中蒙两国共同遭受的比较严重的自然灾害之一。针对中蒙边境地区的草原火灾,以内蒙古东乌珠穆沁旗及接壤的蒙古国三个苏木为研究区,采用2000-2014年的MCD45A火烧迹地产品,利用GIS空间分析方法对中蒙边境地区草原火的时空分布特征进行分析研究。研究结果表明:近15年研究区过火迹地空间分布广泛,而研究区总过火面积的95%分布在蒙古国境内。每个像元上的过火频次较高,最高在蒙古国的哈拉哈郭勒苏木境内,过火频次达到15年内同一个像元上发生7次。而中国的东乌珠穆沁旗境内却没有该现象。研究区过火面积的年际变化表明,2000-2008年呈减少趋势,2008-2014年呈增加趋势。由旬变化可知,4-6月是蒙古国过火面积最大的月份,而10月至来年4月是东乌珠穆沁旗过火面积最大的月份。
[Abstract]:Grassland fire is one of the most serious natural disasters suffered by China and Mongolia. In view of the grassland fire in the border area between China and Mongolia, the eastern Uzhimuqin Banner of Inner Mongolia and the three Mongolian Sumi trees bordering on it are the study areas. The spatial and temporal distribution of steppe fire in the border area of China and Mongolia was studied by using the GIS spatial analysis method using MCD45A burning products from 2000 to 2014. The results showed that the spatial distribution of the overfire in the study area was widespread in the recent 15 years. However, 95% of the total overfire area in the study area is distributed in Mongolia. The frequency of overfire in each pixel is higher, and the highest is in the territory of Harahagaul-Sumu in Mongolia. The frequency of overfire occurred 7 times in the same pixel in 15 years. However, this phenomenon did not occur in East Wuzhimuqin Banner of China. The interannual variation of overfire area in the study area shows a decreasing trend from 2000 to 2008 and an increasing trend from 2008 to 2014. The change shows that April-June is the largest month in Mongolia. And October to April next year is the East Uzhoumu Qin flag overfire area of the largest month.
【作者单位】：内蒙古师范大学地理科学学院;内蒙古自治区遥感与地理信息系统重点实验室;内蒙古气象科学研究所;
【基金】：国家自然科学基金(41561099);国家自然科学基金应急管理项目(61550005) 内蒙古自治区博士基金(2015BS0505) 国家科技支撑计划课题(2013BAK05B00)
【分类号】：S812.6

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