干旱区生态环境知识资源中心(Arid): 我国西北干旱区湖泊变化时空特征

Arid

	我国西北干旱区湖泊变化时空特征
其他题名	Spatial-temporal Variations of Lake Area in Arid Region of Northwest China
	陈栋栋; 赵军
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2017
卷号	32 期号:6 页码:1114-1125
中文摘要	以西北干旱区1990、1999、2007和2015年4个时期Landsat TM/ETM+/OLI遥感影像为基础,运用水体指数获取104个面积大于1 km~2湖泊数据,并分析湖泊变化的驱动机制。研究表明:①1990~2015年西北干旱区湖泊面积整体呈增加的状态,其中1999~2007年湖泊面积扩张速度最明显;②西北干旱区湖泊整体呈扩张趋势,存在明显的区域差异,面积呈先减少后增加趋势的湖泊数量最多,分布也最广。面积持续减少的湖泊数量较少,团状分布在腾格里沙漠腹地;③降水和温度是影响湖泊变化的两个重要因素。高山湖泊面积变化稳定,湖泊面积变化与降水、温度和蒸发量具有较好的一致性,人类活动对湖泊面积变化影响微乎其微。而平原湖泊面积变化则受自然因素和人类活动共同影响。沙漠湖泊面积则是气候变化与地下水补给源变化共同作用的结果。研究整体提高西北干旱区湖泊时空变化特征的认知,并将为本区湖泊变化研究和环境保护提供合理依据。
英文摘要	Based on Landsat TM/ETM+/OLI remote sensing images in the arid region of Northwest China in 1990,1999,2007 and 2015,104 data of lakes with area greater than 1 km~2 were obtained by Normalized Difference Water Index(NDWI)and the driving mechanism of lake change was analyzed.The results show that:(1)From 1990 to 2015,the lake area in northwestern arid region was increasing,and the area of lake in 1999~2007 was the most obvious;(2)In the northwest arid region,the whole lakes showed an expanding trend,but there were obvious regional differences.The area of the lakes decreased first and then increased, and the lakes were the largest and the most widely distributed.Area of the lake continued to reduce the number of small,was distributed in the hinterland of Tengger Desert;(3)Precipitation and temperature are two important factors influencing lake change.The change of lake area is consistent with precipitation,temperature and evaporation,and the impact of human activities on the change of lake area is insignificant. While the change of plain lake area is affected by natural factors and human activities.Desert lake area is the result of climate change and groundwater recharge source changes.The results promote to improve the temporal and spatial characteristics of the lakes in Northwest China,And provide a reasonable basis for the study of lake change and environmental protection in this area.
中文关键词	湖泊变化 ; 气候变化 ; 归一化水体指数 ; 西北干旱区
英文关键词	Lake change Climate change Normalized Difference Water Index The arid region of Northwest China
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:6148626
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236889
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	陈栋栋,赵军. 我国西北干旱区湖泊变化时空特征[J]. 西北师范大学,2017,32(6):1114-1125.
APA	陈栋栋,&赵军.(2017).我国西北干旱区湖泊变化时空特征.遥感技术与应用,32(6),1114-1125.
MLA	陈栋栋,et al."我国西北干旱区湖泊变化时空特征".遥感技术与应用 32.6(2017):1114-1125.