干旱区生态环境知识资源中心(Arid): 黑河流域绿洲变化的模式与稳定性分析

Arid

	黑河流域绿洲变化的模式与稳定性分析
其他题名	Analysis of patterns in the variation and stability of oases in the Heihe River basin
	董敬儒; 颉耀文; 段含明; 王晓云; 李汝嫣
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2020
卷号	37 期号:4 页码:1048-1056
中文摘要	本文旨在探索黑河流域绿洲近55 a的时空变化模式与稳定性。基于19632017年的16期多源遥感影像,提取了55 a黑河流域绿洲空间分布信息,使用叠置分析、格网化等方法,分析黑河流域绿洲变化模式与稳定性的时空特征。结果表明:黑河流域绿洲以波动变化模式为主,波动绿洲主要分布在灌溉保证程度差和土壤盐渍化的地区;扩张绿洲呈现早期向内填充、中后期向外扩张的模式;退缩绿洲主要分布在生态脆弱的绿洲边缘。黑河流域绿洲总体上逐渐趋向稳定,下游绿洲稳定性低于中游;中游及下游的金塔、鼎新绿洲波动主要发生在早期,而下游额济纳绿洲的波动主要发生在中期。
英文摘要	This article aims to explore spatiotemporal patterns in the variation and stability of oases in the Heihe River basin in the last 55 years.This study involved multi-source remote sensing images in 16 periods from 1963 to 2017.Information on the distribution of oases in the Heihe River basin was extracted from the images.Then,the temporal and spatial characteristics of the variation and stability of oases in the basin were analyzed using overlay analysis and a grid-transformed model.According to the transformation from oasis to desert and changes in oasis boundaries,the oases were divided into four categories:stable,expanding,shrinking,and fluctuating.In order to make up for the shortcomings of previous research methods such as single dynamic degree,we established a grid-transformed model of spatial dynamic degree and cumulative dynamic degree considering total change to analyze the spatial distribution of the stability of oases.The results show the following:In the past 55 years,the oases in the Heihe River Basin were predominantly fluctuating.Oasis fluctuations mainly occurred in areas with poor water source reliability and saline-alkaline soil.Expansions of the oasis mainly occurred in the gap between the existing oasis patches in the early years,and occurred on the outer edge of the existing oasis in the middle and later years.Shrinkages of the oasis mainly occurred in the ecologically fragile zone on the edge of the oasis.The expansions of oases in the early years were mainly due to population growth and immigration policies,while the expansion of oases after the year 2000 was mainly caused by the innovation of agricultural production technologies such as drip irrigation and sprinkling irrigation.Oases in the Heihe River basin gradually became stable.The stability of oasis in the lower reaches of the Heihe River was lower than that of oases in the middle of the river.Fluctuations in oases in the middle and lower reaches in Jinta County and Dingxin County mainly occurred in the early stage,while oases in Ejina County fluctuated in the middle stage.Land salinization and broad-shallow and shifting channels of the Heihe River are the important factors influencing oasis stability.This paper constructed a time series of oasis dynamics on the basis of a grid-transformed method.It simultaneously detects the temporal and spatial characteristics of changes in oases and reduces the analysis unit to the grid scale so that changes in oases can be identified and analyzed more effectively.
中文关键词	绿洲 ; 变化模式 ; 稳定性 ; 遥感 ; 黑河流域
英文关键词	GIS oasis change pattern stability remote sensing GIS Heihe River Basin
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:6834406
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353508
作者单位	董敬儒, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国. 王晓云, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国. 李汝嫣, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国. 颉耀文, 兰州大学资源环境学院;;兰州大学, ;;西部环境教育部重点实验室, 兰州;;兰州, 甘肃;;甘肃 730000;;730000, 中国. 段含明, 兰州大学资源环境学院;;西华师范大学国土资源学院, ;;, 兰州;;南充, 甘肃;;四川 730000;;637002, 中国.
推荐引用方式 GB/T 7714	董敬儒,颉耀文,段含明,等. 黑河流域绿洲变化的模式与稳定性分析[J]. 兰州大学,2020,37(4):1048-1056.
APA	董敬儒,颉耀文,段含明,王晓云,&李汝嫣.(2020).黑河流域绿洲变化的模式与稳定性分析.干旱区研究,37(4),1048-1056.
MLA	董敬儒,et al."黑河流域绿洲变化的模式与稳定性分析".干旱区研究 37.4(2020):1048-1056.