干旱区生态环境知识资源中心(Arid): Ecological landscape pattern changes and security from 1990 to 2021 in Ebinur Lake Wetland Reserve, China

Arid

DOI	10.1016/j.ecolind.2022.109648
	Ecological landscape pattern changes and security from 1990 to 2021 in Ebinur Lake Wetland Reserve, China
	Sun, Qian; Sun, Jie; Baidurela, Aliya; Li, Liu; Hu, Xinyue; Song, Tingwei
通讯作者	Sun, J
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	145
英文摘要	There is an increasing contradiction between humanity's growing demand for natural resources and relatively limited supplements. Thus, ecological security has received widespread attention, making it a research hotspot in the global environment and an important topic in construction of ecological civilization. Ebinur Lake Wetland is a typical arid wetland area considered as a fragile and sensitive ecosystem. Quantitative monitoring of the ecological security and landscape patterns of the Ebinur Lake wetland ecosystem is of great significance for environmental protection. To clarify the relationship between ecological landscape indices and land use/cover, this study used Landsat TM/OLI data from 1990, 1998, 2011 and 2021, aimed to analyze the correlated spatio-temporal changes of Ebinur Lake Wetland Reserve, China over past 32 years, in addition to quantitatively evaluating changes in ecological security. The results showed that (1) During 1990-1998, forest and paddy areas increased, while the transformation between paddy fields and wetlands was frequent, and from 1998 to 2011, land use/land cover (LULC) changes gradually stabilized, vegetation recovery was halted, and the water area obviously decreased. Since 2012, Ebinur Lake area decreased by 3.88 % per year, while 44.8 km(2) of the subsoils became extremely severe salinized. (2) The variability of ecological landscape in spatial structure and time dynamics is enhanced, landscape scalability declined, resulting in the intensification of fragmentation. CONTAG (Contagion index) decreased annually with the decline in Gobi area; whereas landscape diversity of wetlands increased with growing light and heavy saline-alkali areas. (3) Overall ecological security gradually increased from 0.56 to 0.65, and the unsafe areas first decreased, before increasing slightly. The total saline-alkaline land area continued to increase, indicating that desertification cannot be curbed. Ecological security had the highest sensitivity to landscape separation, and the value range and its safety levels of ecological security (ES) were accurately delimited based on uncertainty calculation and frequency statistics. The results can provide reasonable and practical suggestions for the government and local communities on how to strengthen the ecological environment construction of Ebinur Lake Wetland Reserve. The government should several water-saving measures, in addition to an inter-basin water transfer project can be implemented to help diminish the consequences of insufficient water resources, and planting salt-absorbing vegetation to slow the salinization process.
英文关键词	LULC Landscape pattern Ecological security Salinization The Ebinur Wetland Reserve
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:000916600100003
WOS关键词	LAND USE/COVER CHANGE ; SENSITIVITY-ANALYSIS ; COVER ; XINJIANG ; REGION ; CLASSIFICATION ; REGRESSION ; IMAGERY ; METRICS ; AREA
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392363
推荐引用方式 GB/T 7714	Sun, Qian,Sun, Jie,Baidurela, Aliya,et al. Ecological landscape pattern changes and security from 1990 to 2021 in Ebinur Lake Wetland Reserve, China[J],2022,145.
APA	Sun, Qian,Sun, Jie,Baidurela, Aliya,Li, Liu,Hu, Xinyue,&Song, Tingwei.(2022).Ecological landscape pattern changes and security from 1990 to 2021 in Ebinur Lake Wetland Reserve, China.ECOLOGICAL INDICATORS,145.
MLA	Sun, Qian,et al."Ecological landscape pattern changes and security from 1990 to 2021 in Ebinur Lake Wetland Reserve, China".ECOLOGICAL INDICATORS 145(2022).