干旱区生态环境知识资源中心(Arid): Relationship between net primary productivity and soil water content in the Shule River Basin

Arid

DOI	10.1016/j.catena.2021.105770
	Relationship between net primary productivity and soil water content in the Shule River Basin
	Yue, Dongxia; Zhou, Yanyan; Guo, Jianjun; Chao, Zengzu; Guo, Xiaojuan
通讯作者	Yue, DX (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	208
英文摘要	Soil water content (SWC) is the basic condition for the survival of terrestrial vegetation. Net primary productivity (NPP) directly reflects the status of vegetation growth. Therefore, studying the coupling relationship between NPP and SWC in the arid region of Northwest China is of great significance for vegetation restoration and the protection of fragile ecosystems. Based on remote sensing and SWC measured data, the CASA model and statistical downscaling methods were used to calculate the NPP and SWC, analyze the spatial and temporal evolution of them, and to explore their coupling relationship in the Shule River Basin (SRB) in China. Our results indicate that (1) an upward trend in NPP and SWC during the summers of 2001-2015. (2)The NPP and SWC were mainly positively correlated. There was a lag effect in the response of vegetation NPP to SWC in most areas of the basin. However, NPP had a greater impact on SWC in desert areas than in other regions. (3) Based on changes to SWC, two scenarios analyses of NPP were conducted to reveal how NPP responded to SWC. In scenario 1 (the SWC change only), as SWC increases, NPP gradually increases. Scenario 2 (increase of 1 degrees C temperature and 2% precipitation), compared with scenario 1, as SWC increases, the increase in NPP decreases. Based on the results, in scenario 2, the beneficial effect of SWC on vegetation growth was weakened. Thus, under future climate change, only by timely supplementing SWC can we better promote the growth of NPP, improve vegetation productivity, and effectively restore and protect the ecological environment of SRB. This study deepens our understanding of the coupling relationship between the ecological environment and water resources of the SRB and provides a scientific basis for formulating rational allocation of water resources and ecological environment restoration and protection measures in the arid regions of China.
英文关键词	Net primary productivity Soil water content Coupling relationship Shule River Basin
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000708436100016
WOS关键词	TERRESTRIAL ECOSYSTEMS ; LOESS PLATEAU ; CLIMATE VARIABILITY ; VEGETATION COVER ; INNER-MONGOLIA ; USE EFFICIENCY ; AMSR-E ; MOISTURE ; DYNAMICS ; PRECIPITATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374472
作者单位	[Yue, Dongxia; Zhou, Yanyan; Chao, Zengzu; Guo, Xiaojuan] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; [Guo, Jianjun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yue, Dongxia,Zhou, Yanyan,Guo, Jianjun,et al. Relationship between net primary productivity and soil water content in the Shule River Basin[J],2022,208.
APA	Yue, Dongxia,Zhou, Yanyan,Guo, Jianjun,Chao, Zengzu,&Guo, Xiaojuan.(2022).Relationship between net primary productivity and soil water content in the Shule River Basin.CATENA,208.
MLA	Yue, Dongxia,et al."Relationship between net primary productivity and soil water content in the Shule River Basin".CATENA 208(2022).