Assessing impacts of climate change and human activities on the abnormal correlation between actual evaporation and atmospheric evaporation demands in southeastern China
Bai, Hua1,2,3; Lu, Xianghui2; Yang, Xiaoxiao4; Huang, Jianchu4; Mu, Xingmin1,3; Zhao, Guangju1,3; Gui, Faliang2; Yue, Chao1,3
2020-01
Source PublicationSustainable Cities and Society
Volume56Issue:-Pages:102075
Abstract

Generally, atmospheric evaporation demand (AED) shows a positive correlation with actual evaporation (AE) in the Yangtze River basin. In order to explore whether and why abnormal correlation exits in its five sub-basins, the temporal changes between AED and AE were compared, and then the impacts of climate change and human activities on abnormal correlations were assessed using the sensitivity method of Penman equation and the decomposition method of Budyko equation. The results indicated: (1) Pan evaporation and potential evaporation (indicators of AED) decreased at rates of up to -0.04 and -0.06mm d−1 decade−1, respectively. In contrast, the water budget-derived evaporation (an indicator of AE) increased at the rate of 0.09mm d−1 decade−1 in the
Fuhe River basin and remained stable in other basins. Abnormal correlations (nonpositive correlations) were observed. (2) Decreasing net radiation and wind speed were major climate factors resulting in simultaneous temporal decreases in AED and AE. In contrast, afforestation was a major human factor leading to an increase in annual AE of 78 mm, but had no effect on AED. Afforestation was the primary driving force of the abnormal correlation. These results could provide water-energy guidance for urban climate change mitigation and flood/drought disaster management.

KeywordClimate change Afforestation Penman equation Budyko-type equation Water-energy balance Complementary relationship of evaporation
MOST Discipline Catalogue农学::农业资源与环境
DOI10.1016/j.scs.2020.102075
Indexed BySCIE
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/9220
Collection水保所2018--2020届毕业生论文(学位论文、期刊论文)
Corresponding AuthorMu, Xingmin
Affiliation1.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources
2.Jiangxi Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology
3.University of Chinese Academy of Sciences
4.Jiangxi Provincial Bureau of Hydrology
Recommended Citation
GB/T 7714
Bai, Hua,Lu, Xianghui,Yang, Xiaoxiao,et al. Assessing impacts of climate change and human activities on the abnormal correlation between actual evaporation and atmospheric evaporation demands in southeastern China[J]. Sustainable Cities and Society,2020,56(-):102075.
APA Bai, Hua.,Lu, Xianghui.,Yang, Xiaoxiao.,Huang, Jianchu.,Mu, Xingmin.,...&Yue, Chao.(2020).Assessing impacts of climate change and human activities on the abnormal correlation between actual evaporation and atmospheric evaporation demands in southeastern China.Sustainable Cities and Society,56(-),102075.
MLA Bai, Hua,et al."Assessing impacts of climate change and human activities on the abnormal correlation between actual evaporation and atmospheric evaporation demands in southeastern China".Sustainable Cities and Society 56.-(2020):102075.
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