干旱区生态环境知识资源中心(Arid): 21世纪初期气候波动下浑善达克沙地荒漠化动态变化分析

Arid

	21世纪初期气候波动下浑善达克沙地荒漠化动态变化分析
其他题名	Dynamic changes of desertification in the Hunshandake Desert under the climate fluctuation in early 21st Century
	李春兰 1; 朝鲁门 2; 包玉海 3; 银山 3; 张继权 4; 阿拉腾图雅 3; 包刚 5; 胡日查 3; 罗娟 3
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2015
卷号	38 期号:3 页码:556-564
中文摘要	基于EOS-MODIS遥感数据,利用GIS计算出归一化植被指数(NDVI)和植被覆盖指数(PV),计算得到荒漠化指数(DI)对浑善达克沙地荒漠化进行识别,根据像元数统计不同荒漠化类型的面积及其变化数据,再分析荒漠化面积与气象要素的相关性,进而得出近13 a在气候波动下浑善达克沙地荒漠化的动态变化。结果表明:浑善达克沙地年平均气温呈下降趋势,年平均降水量呈增加趋势,且平均降水量对荒漠化动态变化的影响比平均气温对荒漠化动态变化的影响大。在气候波动影响下浑善达克沙地以荒漠化面积缩小为主,中度荒漠化,重度荒漠化和极重度荒漠化对荒漠化的演替贡献较大,表现为高程度荒漠化向低程度荒漠化转换。空间分布上,表现为西部极重度荒漠化面积明显减少,主要转化为重度荒漠化类型,东中部重度荒漠化明显减少,主要转化为未荒漠化和轻度荒漠化类型。
英文摘要	In recent years,the desertification has been researched deeply,especially the Hunshandake Desert, which is one of the most serious desertification areas in China and also one of the important sources of dust from East Asia,threating local peoples life and economy. For the evolution of desertification is a complex process,it is necessary to study it in all aspects. This paper used GIS to calculate the normalized vegetation index(NDVI) and vegetative cover index(PV)based on EOS-MODIS remote sensing data. Then the desertification index (DI)was obtained to identify the desertification of Hunshandake Desert. The areas of different types of desertification were calculated based on pixel scale. Moreover,the correlation between desertification areas and meteorological elements was analyzed to obtain the dynamic change of desertification of Hunshandake Desert in recent 13 years. The result indicated that annual mean temperature was decreasing and the mean precipitation was increasing in Hunshandake Desert. The influence of precipitation on dynamic changes of desertification was larger than that of temperature. The desertification area was decreasing in recent 13 years under the climate fluctuation. The changes of moderate,severe and extreme desertification were obvious which was represented by the conversion from extreme desertification to mild desertification. Spatially,the area of extreme desertification in the west of Hunshandake Desert was obviously decreasing which converted into severe desertification. However,the areas of severe desertification in the east and middle parts of Hunshandake Desert were decreasing which converted into normal and mild desertification. The current position of desertification seems to be better,it maybe the project of Conversion of Cropland to Forest or Grassland or it may result in the change climate. Thus,there are some uncertain situations that need us for a further study.
中文关键词	气候波动 ; 浑善达克沙地 ; 荒漠化指数 ; 动态变化
英文关键词	climate fluctuation Hunshandake Desert desertification index dynamic change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5446659
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232657
作者单位	1.华东师范大学地理科学学院, 上海 200241, 中国; 2.内蒙古生态与农业气象中心, 呼和浩特, 内蒙古 010051, 中国; 3.内蒙古师范大学地理科学学院, 呼和浩特, 内蒙古 010022, 中国; 4.东北师范大学城市与环境科学学院, 长春, 吉林 130024, 中国; 5.内蒙古师范大学, 内蒙古遥感与地理信息系统重点实验室, 呼和浩特, 内蒙古 010022, 中国
推荐引用方式 GB/T 7714	李春兰,朝鲁门,包玉海,等. 21世纪初期气候波动下浑善达克沙地荒漠化动态变化分析[J],2015,38(3):556-564.
APA	李春兰.,朝鲁门.,包玉海.,银山.,张继权.,...&罗娟.(2015).21世纪初期气候波动下浑善达克沙地荒漠化动态变化分析.干旱区地理,38(3),556-564.
MLA	李春兰,et al."21世纪初期气候波动下浑善达克沙地荒漠化动态变化分析".干旱区地理 38.3(2015):556-564.