干旱区生态环境知识资源中心(Arid): Effects and implications of ecological restoration projects on ecosystem water use efficiency in the karst region of Southwest China

Arid

DOI	10.1016/j.ecoleng.2021.106356
	Effects and implications of ecological restoration projects on ecosystem water use efficiency in the karst region of Southwest China
	Ding, Zhi; Liu, Ying; Wang, Lunche; Chen, Yanan; Yu, Pujia; Ma, Mingguo; Tang, Xuguang
通讯作者	Tang, XG (corresponding author), Southwest Univ, Sch Geog Sci, Chongqing Jinfo Mt Karst Ecosyst Natl Observat &, Chongqing 400715, Peoples R China.
来源期刊	ECOLOGICAL ENGINEERING
ISSN	0925-8574
EISSN	1872-6992
出版年	2021
卷号	170
英文摘要	Large-area ecological restoration projects have been implemented to enhance ecosystem resistance in the karst region of Southwest China since the beginning of the 21st century. Variability in ecosystem water use efficiency (WUE) reflects the responses of vegetation photosynthesis to the water availability. However, whether the restoration projects positively affects ecosystem WUE remains unclear. Therefore, this study aims to evaluate the effect of such projects on ecosystem WUE in the karst and non-karst regions of Southwest China by using time series satellite-based gross primary production and evapotranspiration data. Results show that (1) afforestation, converted from agriculture land, shrubland and grassland, is a major restoration activity in our study region, the area percentage of which is approximately 93% in karst and non-karst regions; (2) the annual mean ecosystem WUE in the karst region is substantially lower but increased faster than the non-karst region from 2001 to 2015; (3) in the karst area, the increase in the annual ecosystem WUE change rate of ecological restorations is slightly lower but the multiyear accumulative effect is larger during the period of 2001-2015. Therefore, we propose that ecological projects, such as afforestation, positively affects water costs of terrestrial carbon sink and effectively improves the fragile karst ecosystem function.
英文关键词	WUE Restoration activity Afforestation Karst region Land cover changes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687624200009
WOS关键词	ROCKY DESERTIFICATION ; VEGETATION ; IMPACT ; FOREST ; PLANTS ; SOILS ; CO2
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362976
作者单位	[Ding, Zhi; Chen, Yanan; Yu, Pujia; Ma, Mingguo; Tang, Xuguang] Southwest Univ, Sch Geog Sci, Minist Educ, Chongqing Jinfo Mt Karst Ecosyst Natl Observat &, Chongqing 400715, Peoples R China; [Ding, Zhi; Chen, Yanan; Yu, Pujia; Ma, Mingguo; Tang, Xuguang] Southwest Univ, State Cultivat Base Ecoagr Southwest Mt Land, Chongqing 400715, Peoples R China; [Ding, Zhi] Henan Univ, Key Lab Geospatial Technol Middle & Lower Yellow, Kaifeng 475004, Henan, Peoples R China; [Liu, Ying] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China; [Wang, Lunche] China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Crit Zone Evolut, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Ding, Zhi,Liu, Ying,Wang, Lunche,et al. Effects and implications of ecological restoration projects on ecosystem water use efficiency in the karst region of Southwest China[J],2021,170.
APA	Ding, Zhi.,Liu, Ying.,Wang, Lunche.,Chen, Yanan.,Yu, Pujia.,...&Tang, Xuguang.(2021).Effects and implications of ecological restoration projects on ecosystem water use efficiency in the karst region of Southwest China.ECOLOGICAL ENGINEERING,170.
MLA	Ding, Zhi,et al."Effects and implications of ecological restoration projects on ecosystem water use efficiency in the karst region of Southwest China".ECOLOGICAL ENGINEERING 170(2021).