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Spatial and Temporal Patterns of Carbon and Water Use Efficiency on the Loess Plateau and Their Influencing Factors

文献类型：期刊论文

作者Zhang, Qi1; Lu, Jinxin1; Xu, Xuexuan2; Ren, Xiuzi1; Wang, Junfeng1; Chai, Xiaohong1; Wang, Weiwei1
刊名LAND
出版日期2023
卷号12期号:1页码:16
关键词Loess Plateau carbon and water use efficiency climate change human activities
DOI10.3390/land12010077
通讯作者Xu, Xuexuan(xuxuexuan@nwsuaf.edu.cn)
英文摘要Quantitative assessment of the dynamics of carbon and water use efficiency on the Loess Plateau in the context of complex climate change and its driving mechanisms is important for the improvement of the regional ecological environment and the enhancement of ecological service functions. In order to assess the impact of climate change and human activities on the carbon and water use efficiency of the Loess Plateau, this study investigates the spatial and temporal rates of change in CUE, WUE, and meteorological factors at the image metric scale using one-dimensional linear fit regression, investigates the spatial correlation between CUE and meteorological factors using partial correlation analysis, and quantifies the relative contributions of human activities to CUE and WUE using residual analysis. The following are the study's conclusions: (1) The CUE and WUE of the Loess Plateau decreased geographically from 2000 to 2020, and both the CUE and WUE of the Loess Plateau exhibited a non-significant declining trend (p > 0.05), with the CUE falling at a rate of 0.001/10a (a: year) and the WUE decreasing at a rate of 0.047/10a (a: year). (2) From 2000 to 2020, the mean values of the CUE and WUE of the Loess Plateau were 0.60 and 1.75, respectively, with a clear spatial difference. (3) CUE was favorably linked with precipitation in 56.51% of the Loess Plateau, dispersed throughout the south-central portion of the Loess Plateau and Inner Mongolia, whereas the biased association with temperature was not statistically significant and often negative. (4) An examination of residuals revealed that human activities affected the trend of CUE and WUE to some degree. Only the WUE residuals of evergreen broadleaf forests exhibited a strong upward trend that was considerably influenced by people. In conclusion, this study used remote sensing image data and meteorological data to systematically analyze the spatial and temporal dynamic patterns of carbon use efficiency and water use efficiency on the Loess Plateau over the past 21 years, as well as the characteristics of their responses to climate change and human activities, thereby providing theoretical guidance for the study of carbon and water cycles in terrestrial ecosystems on the Loess Plateau.
WOS关键词NET PRIMARY PRODUCTION ; SPATIOTEMPORAL VARIATION ; TERRESTRIAL ECOSYSTEMS ; LAND-USE ; ENERGY ; RESPIRATION ; VEGETATION ; SATELLITE ; LEAF ; REPRODUCTION
资助项目National Natural Science Foundation of China[41977426]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000915619100001
出版者MDPI
资助机构National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/189788]  
专题中国科学院地理科学与资源研究所
通讯作者Xu, Xuexuan
作者单位1.Northwest A&F Univ, Coll Grassland Agr, Yangling 712100, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Qi,Lu, Jinxin,Xu, Xuexuan,et al. Spatial and Temporal Patterns of Carbon and Water Use Efficiency on the Loess Plateau and Their Influencing Factors[J]. LAND,2023,12(1):16.
APA Zhang, Qi.,Lu, Jinxin.,Xu, Xuexuan.,Ren, Xiuzi.,Wang, Junfeng.,...&Wang, Weiwei.(2023).Spatial and Temporal Patterns of Carbon and Water Use Efficiency on the Loess Plateau and Their Influencing Factors.LAND,12(1),16.
MLA Zhang, Qi,et al."Spatial and Temporal Patterns of Carbon and Water Use Efficiency on the Loess Plateau and Their Influencing Factors".LAND 12.1(2023):16.

入库方式： OAI收割

来源：地理科学与资源研究所

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