干旱区生态环境知识资源中心(Arid): 基于MODIS的黄土高原土地荒漠化动态监测

Arid

	基于MODIS的黄土高原土地荒漠化动态监测
其他题名	Desertification Monitoring of Loess Plateau based on MODIS
	贺振; 贺俊平
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2011
卷号	26 期号:4 页码:476-481
中文摘要	以2001年和2009年8月MODIS卫星影像为数据源,基于归一化植被指数和像元二分原理,通过建立科学的荒漠化土地分类系统,对黄土高原地区近8 a的荒漠化土地进行了动态变化监测,分析了2个时期荒漠化土地的空间分布特征和面积变化情况。结果表明:黄土高原荒漠化土地面积整体呈明显的减少态势,但类型转化结构表明荒漠化土地强度却处于不断发展阶段。8 a间,极重度荒漠化土地面积增加了16.53 km2,增长率为28.36%,重度和中度荒漠化土地面积均有不同程度减少,分别减少了1.2104km2和7.0104km2,变化率分别为32.97%和29.19%;分别有9.0104km2和1.2104km2的轻度和潜在荒漠化土地转化为其他类型荒漠化土地,并分别增加了9.3103km2和7.3104km2,增长率分别为4.2%和57.3%。发展区面积为1.9105km2,稳定区面积为4.0105km2,逆转区面积为2.8104km2,发展区面积比逆转区面积大1.6105km2,表明黄土高原环境质量不断下降,荒漠化强度不断扩张的趋势。
英文摘要	Based on the MODIS satellite image data in 2001 and 2009,dynamic change of desertification in loess plateau was studied by employing methods of normalized difference vegetation index and the dimidiate pixel model principle.It focused on analyzing of the spatial distribution of the different desertification degrees and change in the area during both the August 2001 and 2008 by establishing a scientific classification system of desertification.The results show that desertification land area in the loess plateau exhibits over all a decreasing tendency since recent eight years,but development intensity continuously increased.The very severe desertification land area increases by 16.53 km2 with the growth rate of 28.36%.The severe and moderate desertification area decreases by 1.2104 km2 and 7.0104 km2 with the change rate of 32.97% and 29.19% respectively.9.0104 km2 moderate and 1.2104 km2 potential desertification land are turned into other types of desertification,and increases by 9.3103 km2 and 7.3104 km2 with the growth rates of 4.2% and 57.3% respectively.The developing area is 1.9105 km2,steady area is 4.0105 km2 and the reverse area is 2.8104 km2.The developing area is 1.6105 km2 larger than the reverse area,indicates that the environmental quality is continuously decreased,and the desertification degree is still expanding.
中文关键词	荒漠化 ; 植被覆盖度 ; 黄土高原
英文关键词	MODIS MODIS Desertification Vegetation coverage Loess plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4273248
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227312
作者单位	商丘师范学院环境与规划系, 商丘, 河南 476000, 中国
推荐引用方式 GB/T 7714	贺振,贺俊平. 基于MODIS的黄土高原土地荒漠化动态监测[J],2011,26(4):476-481.
APA	贺振,&贺俊平.(2011).基于MODIS的黄土高原土地荒漠化动态监测.遥感技术与应用,26(4),476-481.
MLA	贺振,et al."基于MODIS的黄土高原土地荒漠化动态监测".遥感技术与应用 26.4(2011):476-481.