干旱区生态环境知识资源中心(Arid): Climatic and Topographical Effects on the Spatiotemporal Variations of Vegetation in Hexi Corridor, Northwestern China

Arid

DOI	10.3390/d14050370
	Climatic and Topographical Effects on the Spatiotemporal Variations of Vegetation in Hexi Corridor, Northwestern China
	Jiang, Youyan; Du, Wentao; Chen, Jizu; Wang, Chunya; Wang, Jinniu; Sun, Wenxuan; Chai, Xian; Ma, Lijuan; Xu, Zhilong
通讯作者	Du, WT
来源期刊	DIVERSITY-BASEL
EISSN	1424-2818
出版年	2022
卷号	14 期号:5
英文摘要	Oases, as complex geographical landscapes, are strongly influenced by both natural variation and human activities. However, they have degenerated because of unplanned land use and water resource development. The research of oasis changes has mostly discussed single components, but multiple components, especially spatial changes to oasis vegetation, need further strengthening. Land use and NDVI were extracted based on Landsat 5/8 and Mod13A3, respectively, and a transfer matrix was constructed to analyze changes of land use in the Hexi Corridor during 2000-2020. The significant changes in the area of each land use were also quantified. Combined with regional temperature and precipitation, interpolated from meteorological data, the correlations between regional temperature, precipitation, and vegetation coverage were calculated, especially in the quantized areas with significant associations. The results showed that the area of bare land or desert decreased, while the areas of agricultural and residential land increased. The normalized difference NDVI of the studied oases increased at the rate of 0.021 per decade, which was positively related to precipitation (p < 0.05), rather than temperature; of which, farmland and planted grass land were 55.65% and 33.79% in the significantly increased area. In the area of significant positive relation between NDVI and precipitation, the ratio of grassland, farmland, and forest was 79.21%, 12.82%, and 4.06%, respectively. Additionally, changes in oasis vegetation were determined primarily by agricultural activities, which reflected a combination of natural and anthropic influences.
英文关键词	oasis land use normalized difference NDVI climate change human activities
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:000802591700001
WOS关键词	NET PRIMARY PRODUCTIVITY ; MANN-KENDALL ; TRENDS ; TESTS ; SLOPE
WOS类目	Biodiversity Conservation ; Ecology
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/2XILL650/392242
推荐引用方式 GB/T 7714	Jiang, Youyan,Du, Wentao,Chen, Jizu,et al. Climatic and Topographical Effects on the Spatiotemporal Variations of Vegetation in Hexi Corridor, Northwestern China[J],2022,14(5).
APA	Jiang, Youyan.,Du, Wentao.,Chen, Jizu.,Wang, Chunya.,Wang, Jinniu.,...&Xu, Zhilong.(2022).Climatic and Topographical Effects on the Spatiotemporal Variations of Vegetation in Hexi Corridor, Northwestern China.DIVERSITY-BASEL,14(5).
MLA	Jiang, Youyan,et al."Climatic and Topographical Effects on the Spatiotemporal Variations of Vegetation in Hexi Corridor, Northwestern China".DIVERSITY-BASEL 14.5(2022).