干旱区生态环境知识资源中心(Arid): 基于DPM-SPOT的20002015年中亚荒漠化变化分析

Arid

	基于DPM-SPOT的20002015年中亚荒漠化变化分析
其他题名	Desertification change in Central Asia based on DPM-SPOT from 2000 to 2015
	陈文倩; 丁建丽; 谭娇; 张钧泳; 刘博华
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2018
卷号	41 期号:1 页码:119-126
中文摘要	中亚地区与中国西部同属一个完整的内陆地理生态系统,生态环境极其相似,基于丝绸之路经济带的区域间大发展,对中亚地区荒漠化的研究,将更好的服务于我国向中亚开放发展的战略。依据20002015年SPOT VEGETATION为数据源,引入像元二分模型法(DPM),得到2000 2015年间中亚地区的植被覆盖度数据,通过计算转换,最终获取4期中亚地区土地荒漠化程度分布图与荒漠化等级数据,并对其进行分析。结果表明:中亚地区荒漠化总体呈7字形分布,基本沿东北西南方向对称;中亚地区整体荒漠化情况不容乐观,荒漠化面积比例约占到中亚地区面积的80%;荒漠化有扩张趋势,20002010年,约以每年20 km的速度向北部扩张,但从20102015年以后增速明显放缓。总体来看,中亚西南部荒漠化程度依然在加剧。研究表明,基于遥感数据对中亚荒漠化问题的研究,可以有效弥补地面数据不足这一劣势,为以后大尺度的遥感制图提供数据支撑。
英文摘要	In recent years,China’s economy and trade relations with Central Asia have become much closer.The analysis of the overall pattern of land desertification and the change of desertification area in Central Asia is of great importance as western China and Central Asia share the same inland geographic ecosystem and it will also provide help to China’s Open Strategy to Central Asia.Based on SPOT VEGETATION data from 2000 to 2015,the fractional vegetation coverage data in Central Asia was calculated in this study using the dimidiate pixel model (DPM) and the results were further mapped into the degree profile of land desertification and desertification classification which were illustrated in four phases by every five years from 2000 to 2015.The study showed that the distribution of desertification in Central Asia appeared overall in a shape as digit7,which meant an obvious strip-shape distribution of desertification existed from the north to the south and it got worse along the direction,and an apparent stripshape distribution of desertification also existed from the west to the east while the degree of desertification got worn off.The southwest part of this region had the serious desertification.The area of desertification in Central Asia had been expanding,mainly towards the north at a rate about 20 km every year.During the period from 2000 to 2015,the Central Asia desertification area kept increasing from 3 807 298 km~2 in 2000 to 4 076 818 km~2 in 2015 with a growth rate of 7.08%.The growth was mainly divided into two stages:the first stage was the increase of the severe desertification areas from 2000 to 2010.The second stage was mainly the increase of the mild and moderate desertification areas from 2010 to 2015.In general,in the southwest of Central Asia,the desertification has been aggravating.The study demonstrated it can effectively retrieve the regional fractional vegetation coverage by using NDVI as the most suitable characterization of vegetation index combined with DPM as the vegetation and soil type is relatively simple in the region which actually made up the ground data deficiency.The study on the desertification in Central Asia based on the remotely sensed data can provide data support for cartography in large scale and the development decision in Silk Road Economic Belt.
中文关键词	中亚地区 ; 荒漠化 ; SPOT VEGETATION数据
英文关键词	DPM Central Asia desertification DPM SPOT VEGETATION data
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:6275019
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237579
作者单位	新疆大学资源与环境科学学院;;绿洲生态教育部重点实验室, 智慧城市与环境建模自治区普通高校重点实验室;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830046;;830046, 中国
推荐引用方式 GB/T 7714	陈文倩,丁建丽,谭娇,等. 基于DPM-SPOT的20002015年中亚荒漠化变化分析[J]. 新疆大学,2018,41(1):119-126.
APA	陈文倩,丁建丽,谭娇,张钧泳,&刘博华.(2018).基于DPM-SPOT的20002015年中亚荒漠化变化分析.干旱区地理,41(1),119-126.
MLA	陈文倩,et al."基于DPM-SPOT的20002015年中亚荒漠化变化分析".干旱区地理 41.1(2018):119-126.