干旱区生态环境知识资源中心(Arid): The landscape altered the interaction between vegetation and climate in the desert oasis of Hotan River Basin, Xinjiang, China

Arid

DOI	10.1016/j.ecolmodel.2024.110687
	The landscape altered the interaction between vegetation and climate in the desert oasis of Hotan River Basin, Xinjiang, China
	Cai, Yimeng; Wu, Jiaxin; Yimiti, Tudi; Li, Zhouyuan; Yang, Xiuchun; Dong, Shikui
通讯作者	Li, ZY
来源期刊	ECOLOGICAL MODELLING
ISSN	0304-3800
EISSN	1872-7026
出版年	2024
卷号	491
英文摘要	In the arid region, the oasis is characterized by a desert substance and a mosaic of vegetation. The biophysical processes and interactions between vegetation and the local climate in this kind of region are determined by the macroscopic structure of the ecosystems, i.e. landscape patterns. To understand how these landscape patterns impact regional hydro-heat coupling across space and evolve over time, we utilized remote sensing observational data and methods to examine the relationships among these factors. In this case, we focused on the oasis along the upstream of the Hotan River Basin in the Taklamakan Desert in Xinjiang of western China and employed the satellite imagery datasets of Landsat from 1993 to 2019 to investigate the dynamics of vegetation-climate factors. Based on the land use and cover change datasets, the landscape pattern metrics, including patch density (PD), contagion index (CONTAG), fractal dimension (FRAC), were calculated to measure the landscape features on the different aspects, i.e. the fragmentation, the connectivity, and the complexity. With the algorithm of land surface energy balance, the land surface indicators, including the soil-adjusted vegetation index (SAVI), albedo, surface irradiance temperature (Ts), and evapotranspiration (ET), were calculated to represent the key process in the interaction of vegetation-climate. The temporal-spatial dynamics of the landscape patterns and the vegetation-climate metrics were mapped and demonstrated in a quantitative manner. The statistical results revealed that during the past decades, the agricultural land in the study area had significantly increased by 17 %. Grassland and shrubs had also expanded, while the desert area decreased from 82.57 % to 78.82 % of the total area, with an overall reduction rate of 1.4 %/10a. It was found the study area was getting warmer and dryer based on the general trends of Ts and ET observed during the period of 1993-2019. The agricultural land had the highest PD and CONTAG, and the lowest FRAC. The agricultural land had the lowest Ts and the highest ET. The results of structural equation model identified the decoupling effects of PD and CONTAG on the regional hydroheat environment, while confirmed that FRAC had positive impact on the coupling between Ts and ET. Our study bridged the landscape pattern with the regional vegetation-climate interaction and provided the suggestions for the landscape planning and management for a more sustainable arid region.
英文关键词	Landscape dynamics Vegetation -climate interaction Arid region Eco-climatology Remote sensing Structural equation model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001226769200001
WOS关键词	INDEX
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403444
推荐引用方式 GB/T 7714	Cai, Yimeng,Wu, Jiaxin,Yimiti, Tudi,et al. The landscape altered the interaction between vegetation and climate in the desert oasis of Hotan River Basin, Xinjiang, China[J],2024,491.
APA	Cai, Yimeng,Wu, Jiaxin,Yimiti, Tudi,Li, Zhouyuan,Yang, Xiuchun,&Dong, Shikui.(2024).The landscape altered the interaction between vegetation and climate in the desert oasis of Hotan River Basin, Xinjiang, China.ECOLOGICAL MODELLING,491.
MLA	Cai, Yimeng,et al."The landscape altered the interaction between vegetation and climate in the desert oasis of Hotan River Basin, Xinjiang, China".ECOLOGICAL MODELLING 491(2024).