干旱区生态环境知识资源中心(Arid): 青海省土地荒漠化遥感动态监测

Arid

	青海省土地荒漠化遥感动态监测
其他题名	The Remote Sensing based Dynamic Monitoring of Land Desertification in Qinghai Province
	吕爱锋 1; 周磊 2; 朱文彬 1
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2014
卷号	29 期号:5 页码:803-811
中文摘要	近年来由于气候变化和人类活动的影响,青海省受荒漠化的影响日趋严重,采取有效的手段进行荒漠化快速动态监测,跟踪荒漠化现状和变化趋势,是荒漠化防治必要手段。基于像元二分模型,采用2000~2012年MODIS的增强型植被指数产品(EVI)估算青海省植被覆盖度。以植被覆盖度为主要评价指标,对青海省荒漠化现状和动态变化进行快速监测。结果表明:遥感估算的荒漠化面积和全国荒漠化调查的结论基本一致。13年间,青海省荒漠化土地的空间分布特征没有明显变化,全省荒漠化和潜在荒漠化土地总面积在研究时段内没有明显变化趋势,但是受自然因素影响,面积年际波动明显。重度荒漠化面积整体上呈明显下降趋势,青海省沙化和荒漠化状况有所改善,部分地区生态群落生产力、草地植被覆盖度呈上升趋势,表明近年来在青海实施的林业工程和荒漠化治理措施逐步显现出生态效益,发挥了实际作用。
英文摘要	Due to the climate change and human activities,the impact of desertification in Qinghai becomes more serious in recent decades.Fast dynamic monitoring desertification by an effective technology is the necessary means to combating desertification.Based on the dimidiate pixel model,the vegetation coverage was estimated for Qinghai province using the MODIS data product-Enhanced Vegetation Index (EVI) from 2000 to 2012.The land desertification status and dynamic changes were rapidly monitored and assessed using vegetation coverage as the main index.The results show that remote sensing area of desertification in Qinghai is basically same as the conclusions of "A Bulletin of Status Quo of Desertification and Sandification in China".The spatial distribution characteristics of land desertification in Qinghai did not change obviously during the 13 years.However,the severe desertification area shows obviously downward trend.The sandification and desertification status in Qinghai are improved,and the ecological communities productivity and vegetation coverage of grassland in some regions gradually increase.This indicates that recent years forestry engineering and desertification control measures implemented in Qinghai gradually which exhibit ecological benefits and play a practical role.
中文关键词	青海 ; 荒漠化 ; 遥感 ; 动态变化
英文关键词	Qinghai Desertification Remote sensing Dynamic change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:5283665
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231965
作者单位	1.中国科学院地理科学与资源研究所, 北京 100101, 中国; 2.中国环境监测总站, 北京 100012, 中国
推荐引用方式 GB/T 7714	吕爱锋,周磊,朱文彬. 青海省土地荒漠化遥感动态监测[J]. 中国科学院地理科学与资源研究所,2014,29(5):803-811.
APA	吕爱锋,周磊,&朱文彬.(2014).青海省土地荒漠化遥感动态监测.遥感技术与应用,29(5),803-811.
MLA	吕爱锋,et al."青海省土地荒漠化遥感动态监测".遥感技术与应用 29.5(2014):803-811.