干旱区生态环境知识资源中心(Arid): Analysis on Temporal and Spatial Changes of Vegetation Net Primary Productivity in Typical Alpine-Oasis-Desert Ecological Region

Arid

DOI	10.3964/j.issn.1000-0593(2022)08-2595-08
	Analysis on Temporal and Spatial Changes of Vegetation Net Primary Productivity in Typical Alpine-Oasis-Desert Ecological Region
	Qiao Peng; Sun Cong-jian; Li Ya-xin; Zhou Si-jie; Chen Ya-ning
通讯作者	Sun, CJ
来源期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
出版年	2022
卷号	42 期号:8 页码:2595-2602
英文摘要	Alpine-oasis-desert is a unique natural landscape in arid areas, its internally distinct ecosystems are prone to different fluctuations under global change. As an important indicator to evaluate the quality of the ecological environment, vegetation net primary productivity (NPP) is of great significance to the overall understanding of regional changes. The generation of remote sensing images allows large-scale and long-term regional NPP estimation. The maximum light energy utilization efficiency under different plant covers classified by land-use type data also improves the accuracy of NPP estimation. Therefore, this paper selects the Yarkand River Basin with a typical alpine-oasis-desert ecosystem as the study area, using remote sensing image data and meteorological data for many years, selecting the CASA model based on light utilization rate simulate and analyze the NPP status of each ecological area. The following conclusions were drawn: (1) The annual average value of NPP in the Yarkand River Basin showed a fluctuating upward trend after 2 000, and about 85. 9 % of the regions showed an upward trend. In the water area and the residential location of the oasis area, the NPP decreased. (2) The variation of NPP in the basin strongly correlations with precipitation, and its spatial distribution characteristics have an opposite correlation with NPP and temperature. (3) NPP in the Yarkand River Basin showed the highest in the oasis, followed by the desert-oasis transition zone, and the lowest in the alpine and desert regions. The fluctuation of NPP in the regions with relatively more fragile ecosystems (desert and alpine) was more substantial than that in the oasis and desert-oasis transition zone. The research results will provide theoretical support for restoring regional ecological environment protection, the response to climate change, the coordinated development of human beings and nature, and the promotion of multi-ethnic common prosperity.
英文关键词	Arid region Oasis NPP CASA model Temporal and spatial changes
类型	Article
语种	中文
收录类别	SCI-E
WOS记录号	WOS:000852883200042
WOS类目	Spectroscopy
WOS研究方向	Spectroscopy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394535
推荐引用方式 GB/T 7714	Qiao Peng,Sun Cong-jian,Li Ya-xin,et al. Analysis on Temporal and Spatial Changes of Vegetation Net Primary Productivity in Typical Alpine-Oasis-Desert Ecological Region[J],2022,42(8):2595-2602.
APA	Qiao Peng,Sun Cong-jian,Li Ya-xin,Zhou Si-jie,&Chen Ya-ning.(2022).Analysis on Temporal and Spatial Changes of Vegetation Net Primary Productivity in Typical Alpine-Oasis-Desert Ecological Region.SPECTROSCOPY AND SPECTRAL ANALYSIS,42(8),2595-2602.
MLA	Qiao Peng,et al."Analysis on Temporal and Spatial Changes of Vegetation Net Primary Productivity in Typical Alpine-Oasis-Desert Ecological Region".SPECTROSCOPY AND SPECTRAL ANALYSIS 42.8(2022):2595-2602.