干旱区生态环境知识资源中心(Arid): 京津风沙源区防风固沙功能的时空变化及其区域差异

Arid

	京津风沙源区防风固沙功能的时空变化及其区域差异
其他题名	Spatial-temporal changes and regional differences of the sandfixing service in the Beijing-Tianjin sandstorm source region
	张彪 1; 李庆旭 2; 王爽 2; 谢高地 2
来源期刊	自然资源学报
ISSN	1000-3037
出版年	2019
卷号	34 期号:5 页码:1041-1053
中文摘要	防风固沙功能是京津风沙源治理成效的关键监测指标。以往研究注重局地防风固沙功能的评估,对全区防风固沙功能的时空变化与内部差异揭示不足。基于京津风沙源区多期遥感数据,采用修正风蚀方程与GIS 空间统计技术,评估分析了2000-2015年防风固沙功能的整体变化及其区域差异。结果表明:(1)京津风沙源区年均防风固沙量为28.98亿t,防风固沙能力为68.24t/hm~2,且均随年份变化波动增加,年均增速分别为1.10%和0.71%;(2)京津风沙源区防风固沙能力呈西北高、东南低趋势,有49.06%的区域防风固沙能力高于70t/hm~2,评估期内有54%的区域防风固沙能力明显提高;(3)浑善达克沙地亚区、典型草原亚区和荒漠草原亚区的防风固沙量累计为全区防风固沙总量的88%,燕山丘陵山地水源保护亚区和晋北山地丘陵亚区的防风固沙能力提升最显著;(4)锡林郭勒盟、赤峰市和乌兰察布市的防风固沙量合计占全区防风固沙量的77%,朔州市与包头市防风固沙能力较高,北京市与天津市防风固沙能力增速较高。因此,未来应重视分区施策治理与西部和北部防风固沙功能提升。
英文摘要	Wind erosion is an important soil degradation process that takes place in arid and semiarid environments,and the sand-fixing service has been used as one of the key indicators of the ecological restoration effects in the Beijing-Tianjin sandstorm source region.Over the past few decades,some studies have focused on the sand- fixing service at local areas in the Beijing-Tianjin sandstorm source region,but few researchers explored the entire changes and regional differences of sand- fixing service.The inadequate information on the sand- fixing service heterogeneity has hindered the implementation of the diversified measures for land management.This paper investigated the dynamic changes and regional differences of the sandfixing service in the Beijing-Tianjin sandstorm source region from 2000 to 2015 through multiperiod RS data and GIS spatial statistical technologies.The annual amount of fixed sand and average amount of fixed sand per hectare of land served as two indicators for the changes and differences of sand-fixing service.The results indicated that,the annual amount of fixed sand nearly reached 2.90 billion tons in the study region,the average capacity of sand- fixing was 68.24 t/hm~2,and the two indexes annually increased by 1.10% and 0.71%,respectively.The average sand- fixing ability in the northwest of sandstorm source region has a significantly higher level than the southeast part.Approximately 49.06% of the Beijing-Tianjin sandstorm source region generated the sand- fixing capacity higher than 70 t/hm~2,and nearly 54% presented an obvious increase in the sand- fixing ability from 2000 to 2015.The Hunshadake sand subzone,the typical grassland subzone and the desert grassland subzone provided 88% of the total amount of fixed sand in the sandstorm source region,whereas the sand-fixing ability in the Jinbei mountain- hill subzone and the Yanshan mountain- hill- water source protection subzone showed higher annual increase rates.In addition,the accumulated amount of fixed sand in Xilin Gol,Chifeng and Ulanqab exceeded 77% of the total amount of sand- fixing service,however,those regions with higher sand-fixing ability are mainly located in Shuozhou and Baotou,and the lands in Beijing and Tianjin showed higher increase rates in sand- fixing abilities.Therefore,we should take differential strategies in different sand- fixing service restoration zones,and pay more attention to the improvement of sand- fixing service in the western and northern parts of the Beijing-Tianjin sandstorm source region.
中文关键词	防风固沙功能 ; 修正风蚀方程 ; 时空变化 ; 区域差异 ; 京津风沙源区
英文关键词	sand- fixing service revised wind erosion equation spatial- temporal change regional difference Beijing-Tianjin sandstorm source control region
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:6499771
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/2XILL650/239874
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
推荐引用方式 GB/T 7714	张彪,李庆旭,王爽,等. 京津风沙源区防风固沙功能的时空变化及其区域差异[J]. 中国科学院地理科学与资源研究所,2019,34(5):1041-1053.
APA	张彪,李庆旭,王爽,&谢高地.(2019).京津风沙源区防风固沙功能的时空变化及其区域差异.自然资源学报,34(5),1041-1053.
MLA	张彪,et al."京津风沙源区防风固沙功能的时空变化及其区域差异".自然资源学报 34.5(2019):1041-1053.