干旱区生态环境知识资源中心(Arid): Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region

Arid

DOI	10.1186/s12302-024-00852-6
	Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region
	Lu, Xiaoyao; Zhang, Lu; Davies, William J.; Zou, Minzhong; Niu, Jun; Chen, Jinliang; Ding, Risheng; Li, Sien; Kang, Shaozhong
通讯作者	Kang, SZ
来源期刊	ENVIRONMENTAL SCIENCES EUROPE
ISSN	2190-4707
EISSN	2190-4715
出版年	2024
卷号	36 期号:1
英文摘要	Dynamics of vegetation in arid areas have drawn worldwide attention. The expansion of irrigated cropland (ICE) in arid regions contributes to increased food security and impacts on the extent and development of regional vegetation. However, the quantitative attribution of vegetation growth variation from ICE and biogeochemical factors (e.g., atmospheric CO2 concentration, climatic factors) is still lacking. Here, we assessed key drivers of vegetation growth in the inland arid region of Northwest China (IANC) from 1982 to 2018, including ICE, increased nitrogen rates, elevated atmospheric CO2 concentration (eCO(2)) and climate drivers, using normalized difference vegetation index (NDVI) and ecosystem gross primary productivity (GPP) as measures. These variables were quantified through trend decomposition, machine learning algorithms, and a satellite-based model. The results show that vegetation growth was increased in IANC mainly due to eCO(2) and ICE. After 1995, as the regional climatic aridity intensified, the CO2 fertilization effect on vegetation growth decreased, as the atmospheric CO2 concentration continued to increase. Meanwhile, irrigated cropland area increased sharply, and ICE-driven GPP variation exceeded that driven by eCO(2) in the whole region, while the ICE-driven NDVI variation exceeded that due to eCO(2) when the ICE reached 6.38%. The ICE effect on regional vegetation growth rather than the CO2 fertilization effect has mitigated the slowdown of the rate of vegetation growth caused by climate changes. Although the ICE is conducive to food security and continuous greening of arid areas, further reclamation will exacerbate water scarcity. Our results provide research base for identifying the scale of sustainable agricultural development.
英文关键词	Irrigated cropland expansion Arid regions CO2 fertilization effect NDVI GPP Climate changes
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:001173134900001
WOS关键词	NET PRIMARY PRODUCTION ; GREENING TREND ; CHINA ; WATER ; SATELLITE ; EARTH ; PHOTOSYNTHESIS ; PRODUCTIVITY ; DRIVEN
WOS类目	Environmental Sciences
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/2XILL650/403670
推荐引用方式 GB/T 7714	Lu, Xiaoyao,Zhang, Lu,Davies, William J.,et al. Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region[J],2024,36(1).
APA	Lu, Xiaoyao.,Zhang, Lu.,Davies, William J..,Zou, Minzhong.,Niu, Jun.,...&Kang, Shaozhong.(2024).Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region.ENVIRONMENTAL SCIENCES EUROPE,36(1).
MLA	Lu, Xiaoyao,et al."Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region".ENVIRONMENTAL SCIENCES EUROPE 36.1(2024).