干旱区生态环境知识资源中心(Arid): An entropy-based investigation into the impact of ecological water diversion on land cover complexity of restored oasis in arid inland river basins

Arid

DOI	10.1016/j.ecoleng.2020.105865
	An entropy-based investigation into the impact of ecological water diversion on land cover complexity of restored oasis in arid inland river basins
	Huang, Feng 1,2; Ochoa, Carlos G.2; Chen, Xi1,3 ; Cheng, Qinbo 1; Zhang, Danrong 1
通讯作者	Huang, Feng
来源期刊	ECOLOGICAL ENGINEERING
ISSN	0925-8574
EISSN	1872-6992
出版年	2020
卷号	151
英文摘要	An improved understanding of the response of oasis ecosystems to ecological water diversion is essential for sustainably managing water resources in arid inland river basins. This entropy-based investigation provides new insight into the ecohydrological impacts of ecological water diversions through a case study of Qingtu oasis in the lower Shiyang River basin in Northwest China. Since 2010, an ecological water diversion project was put in place by Water Resources Bureau of Shiyang River Basin to restore the degraded Qingtu oasis. Annual cumulative water releases from this water diversion project had reached 0.25 billion m(3) in 2018. This contributed to an increase in shallow groundwater level of 1.2 m. A combination of land cover classification indices and an entropy approach were used to assess the ecohydrological response to water diversion inputs. Land cover was classified as sparsely, lowly, moderately, and highly vegetated areas using Normalized Difference Vegetation Index (NDVI) calculated from Landsat images and the Excess Green minus Excess Red Index that was estimated from unmanned aerial vehicle images. Land cover complexity was evaluated using component complexity and spatial complexity. The component complexity corresponds to land cover composition and was assessed using the Shannon's entropy. The spatial complexity corresponds to spatial configuration of different land cover compositions and was analyzed using spatial entropy methodology. The rise in groundwater level caused by ecological water diversion drove the land cover transition and enhanced the component complexity. Field survey data showed that tendency and randomness co-existed in the spatial pattern of groundwater depth and its relationship with NDVI, which jointly affected spatial complexity (i.e., dependence and independence in spatial cooccurrences of different land cover categories). Results from this study improve understanding of the impacts that ecological water diversions can have on land cover evolution in natural oasis in arid inland river basins.
英文关键词	Land cover complexity Shannon's entropy Spatial entropy Ecohydrological impact Ecological water diversion Oasis restoration
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000533857300007
WOS关键词	LOWER TARIM RIVER ; LOWER REACHES ; HEIHE RIVER ; GROUNDWATER DYNAMICS ; RIPARIAN VEGETATION ; POPULUS-EUPHRATICA ; FRACTAL ANALYSIS ; NORTHWEST ; CONVEYANCE ; ECOSYSTEM
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology ; Engineering
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319103
作者单位	1.Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China; 2.Oregon State Univ, Coll Agr Sci, Ecohydrol Lab, Corvallis, OR 97331 USA; 3.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Huang, Feng,Ochoa, Carlos G.,Chen, Xi,et al. An entropy-based investigation into the impact of ecological water diversion on land cover complexity of restored oasis in arid inland river basins[J]. 河海大学,2020,151.
APA	Huang, Feng,Ochoa, Carlos G.,Chen, Xi,Cheng, Qinbo,&Zhang, Danrong.(2020).An entropy-based investigation into the impact of ecological water diversion on land cover complexity of restored oasis in arid inland river basins.ECOLOGICAL ENGINEERING,151.
MLA	Huang, Feng,et al."An entropy-based investigation into the impact of ecological water diversion on land cover complexity of restored oasis in arid inland river basins".ECOLOGICAL ENGINEERING 151(2020).