干旱区生态环境知识资源中心(Arid): Precipitation-Use Efficiency and Its Conversion with Climate Types in Mainland China

Arid

DOI	10.3390/rs14102467
	Precipitation-Use Efficiency and Its Conversion with Climate Types in Mainland China
	Wang, Suping; Zhang, Qiang; Yue, Ping; Wang, Jianshun; Yang, Jinhu; Wang, Wei; Zhang, Hongli; Ren, Xueyuan
通讯作者	Yue, P
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2022
卷号	14 期号:10
英文摘要	The impacts of climate change on ecosystem productivity and water resources over a long term in China are not well quantified. Precipitation-use efficiency (PUE) is a key parameter that describes carbon and water exchange in terrestrial ecosystems. Research on the response of regional PUE to climate change and its driving forces is of great significance to climate-change mitigation and the sustainable development of regional ecology. Based on an improved actual evapotranspiration (ETa) model, the responses of ETa, net primary productivity (NPP), and PUE to climate change in different climatic regions of China were analyzed; the contributions of various environmental factors to PUE changes were quantified; and the conversion characteristics and regulatory mechanisms of the PUE regime in different climatic regions were identified. The results indicate that the improved ETa model, after considering the limiting effect of energy on ETa in humid regions, can simulate the ETa distribution in China well. Over the past 58 years (1960-2017), ETa and NPP have increased in the western regions and decreased in the eastern regions, with the boundary at 103 degrees E. PUE presents a low-high-low spatial distribution from northwest to southeast in China. It is noteworthy that there was a zonal distribution for a high value area of PUE, which coincided with the summer monsoon transition zone. The soil moisture (SM) increase in arid regions is the main driving force of the PUE increase, whereas the annual net radiation (Rn) change in humid regions is the main driving force of the PUE change. The transition zone is the conversion zone, where the prevailing factor limiting vegetation growth transitions from water to energy.
英文关键词	typical climatic zones precipitation-use efficiency net primary productivity contribution of environmental factors transformation characteristics
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:000801294600001
WOS关键词	NET PRIMARY PRODUCTIVITY ; COMPARING GLOBAL-MODELS ; WATER-USE EFFICIENCY ; RAIN-USE EFFICIENCY ; EDDY-COVARIANCE ; INNER-MONGOLIA ; CARBON-CYCLE ; EVAPOTRANSPIRATION ; VARIABILITY ; GRASSLAND
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394144
推荐引用方式 GB/T 7714	Wang, Suping,Zhang, Qiang,Yue, Ping,et al. Precipitation-Use Efficiency and Its Conversion with Climate Types in Mainland China[J],2022,14(10).
APA	Wang, Suping.,Zhang, Qiang.,Yue, Ping.,Wang, Jianshun.,Yang, Jinhu.,...&Ren, Xueyuan.(2022).Precipitation-Use Efficiency and Its Conversion with Climate Types in Mainland China.REMOTE SENSING,14(10).
MLA	Wang, Suping,et al."Precipitation-Use Efficiency and Its Conversion with Climate Types in Mainland China".REMOTE SENSING 14.10(2022).