干旱区生态环境知识资源中心(Arid): Spatio-Temporal Dynamics of Environmental Status Based on a Remote Sensing Ecological Distance Index (RSEDI) in the Oases of Hexi Corridor in Northwest China

Arid

DOI	10.15244/pjoes/132806
	Spatio-Temporal Dynamics of Environmental Status Based on a Remote Sensing Ecological Distance Index (RSEDI) in the Oases of Hexi Corridor in Northwest China
	Guo, Kunming; Zhao, Jintao; Wang, Xiaoyun; Xie, Yaowen
通讯作者	Xie, YW (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou, Peoples R China. ; Xie, YW (corresponding author), Minist Educ MOE, Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China.
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2021
卷号	30 期号:6 页码:4997-5012
英文摘要	The Hexi Corridor is a typical ecologically fragile and sensitive area, and the oases areas in the middle are the core area of the economic development of the Hexi Corridor, where the ecological problems are most serious. It is of great significance for regional ecological environment construction and sustainable development to clarify the ecological environment status and its change distribution of the Hexi oases areas. This study used remote sensing ecological distance index (RSEDI) model to generate time series of various environmental indexes of the Hexi oases areas from 1986 to 2020, based on Landsat TM/OLI images. And the changes of ecological environment were quantitatively analyzed by employing the coefficient of variation, Theil-Sen median trend analysis and the Mann-Kendall test, and Hurst index method. Results showed that: (1) The mean value of RSEDI of Hexi oases showed an increasing trend, increasing from 0.386 in 1986 to 0.405 in 2020. (2) The ecological environment changes of the Hexi oases were relatively stable, areas with low coefficients of variation accounted for 62.70%. (3) The ecological improvement areas (26.53%) were smaller than the ecological decline areas (30.83%), and areas with no change accounted for 42.62%. (4) 75.14% of areas were persistent, showing the ecological environment changes had strong sustainability. The areas with persistence and improvement accounted for 20.72%, which were distributed throughout the study area, mostly around the periphery of artificial oasis such as Shandan, and Yongchang. The areas with persistence and degradation accounted for 21.55%, which were concentrated in the middle of the study area, mainly in Sunan and Gaotai. In short, the ecological environment of the Hexi oases had been improved, but it also faced huge challenges.
英文关键词	ecological environment RSEDI variation coefficient trend analysis method Hurst index Hexi oases
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000703684600008
WOS关键词	LAND-SURFACE TEMPERATURE ; SHIYANG RIVER-BASIN ; TIME-SERIES ; VEGETATION ; OASIS ; NDVI ; AREA ; TRANSFORMATION ; PRECIPITATION ; COEFFICIENT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
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/2XILL650/364403
作者单位	[Guo, Kunming; Xie, Yaowen] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou, Peoples R China; [Zhao, Jintao] Ningxia Univ, Coll Resources & Environm Sci, Yinchuan, Ningxia, Peoples R China; [Wang, Xiaoyun; Xie, Yaowen] Minist Educ MOE, Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Guo, Kunming,Zhao, Jintao,Wang, Xiaoyun,et al. Spatio-Temporal Dynamics of Environmental Status Based on a Remote Sensing Ecological Distance Index (RSEDI) in the Oases of Hexi Corridor in Northwest China[J]. 兰州大学,2021,30(6):4997-5012.
APA	Guo, Kunming,Zhao, Jintao,Wang, Xiaoyun,&Xie, Yaowen.(2021).Spatio-Temporal Dynamics of Environmental Status Based on a Remote Sensing Ecological Distance Index (RSEDI) in the Oases of Hexi Corridor in Northwest China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,30(6),4997-5012.
MLA	Guo, Kunming,et al."Spatio-Temporal Dynamics of Environmental Status Based on a Remote Sensing Ecological Distance Index (RSEDI) in the Oases of Hexi Corridor in Northwest China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 30.6(2021):4997-5012.