干旱区生态环境知识资源中心(Arid): 京津风沙源区20002015年植被覆盖状况的区域差异研究

Arid

	京津风沙源区20002015年植被覆盖状况的区域差异研究
其他题名	Regional differences of vegetation cover in the Beijing-Tianjin sandstorm source region from 2000 to 2015
	李庆旭 1; 张彪 2; 王爽 1; 谢高地 1
来源期刊	地学前缘
ISSN	1005-2321
出版年	2018
卷号	25 期号:5 页码:298-304
中文摘要	植被覆盖状况是监测与表征区域生态建设成效的重要指标。以往研究注重区域植被覆盖状况的整体变化分析,对长时期区域内部植被覆盖变化及其差异研究较少。文中基于京津风沙源区遥感影像数据,采用GIS空间分析技术,重点评估了20002015年植被覆盖度的年际变化及其区域差异。研究结果表明,20002015年京津风沙源区植被覆盖度变化为35%~45%,且随年份变化呈波动增加趋势,年均增速为0.4%(P<0.05),生态治理取得明显植被恢复成效。8个治理分区植被覆盖均有所增加,但区域差异明显,晋北山地丘陵亚区和燕山丘陵山地水源保护亚区植被覆盖度年均增速超过0.6%,浑善达克沙地亚区与荒漠草原亚区植被覆盖度年均增速不及0.2%,这与区域地表组成和气候背景有关。从地市来看,北京、天津和承德植被覆盖度较高,但朔州和张家口植被覆盖度增速明显,而乌兰察布和包头植被覆盖度年均增速低于0.1%。相比2000年,2015年京津风沙源区有51%的区域植被覆盖度增加,49%区域植被覆盖度未变或降低,主要集中在京津风沙源区的中部和西部县市(旗),未来生态治理过程中应加以重点关注。
英文摘要	Vegetation status represents the overall condition of regional ecological environment,hence vegetation coverage is often used to measure the effectiveness of ecological protection and restoration projects.Although numerous studies have reported the overall changes of vegetation coverage in the Beijing-Tianjin sandstorm source region,few studies have investigated the regional differences over the years.In this paper,we calculated the annual vegetation coverage from 2000 to 2015 in the Beijing-Tianjin sandstorm source region using MODIS data,emphasizing the regional variations of vegetation cover in different subzones through statistical and GIS technology.The results indicated that,during the study period,the annual vegetation coverage in the region increased from 35%to 45% with an average annual growth rate of 0.4%.Although vegetation coverage in the eight subzones presented similar growth trend,remarkable differences existed in the vegetation status and growth speed.The annual vegetation growth rates in the Jinbei mountain-hill and Yanshan mountain-hill-water-source-protection subzones exceeded 0.6%,however,lower than 0.2% annual growth rates were observed in the Otindag sandy land and Desert grassland subzones.In addition,higher degree of vegetation primarily distributed in the sandstorm source regions of Beijing,Chengde and Tianjin with Shuozhou and Zhangjiakou showing higher growth rates,whereas the rates were lower than 0.1% in Wulanchabu and Baotou.Approximately 51% Beijing-Tianjin sandstorm source region saw growth rate increasing in 2015 compared to 2000,while the remaining areas experienced decline in the mid and western districts.In conclusion,this study confirmed that significant vegetation improvement has been made in the Beijing-Tianjin sandstorm source region,however,some areas remain poorly covered,therefore more efforts should be directed to these areas towards ecological restoration.
中文关键词	植被覆盖 ; 归一化植被指数 ; 区域差异 ; 京津风沙源区
英文关键词	vegetation cover NDVI regional difference Beijing-Tianjin sandstorm source area
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:6341365
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/2XILL650/237460
作者单位	1.中国科学院地理科学与资源研究所;;中国科学院大学, ;;, ;;, 北京;;北京 100101;;100049, 中国; 2.中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	李庆旭,张彪,王爽,等. 京津风沙源区20002015年植被覆盖状况的区域差异研究[J]. 中国科学院地理科学与资源研究所,2018,25(5):298-304.
APA	李庆旭,张彪,王爽,&谢高地.(2018).京津风沙源区20002015年植被覆盖状况的区域差异研究.地学前缘,25(5),298-304.
MLA	李庆旭,et al."京津风沙源区20002015年植被覆盖状况的区域差异研究".地学前缘 25.5(2018):298-304.