Comparison of surface energy budgets and feedbacks to microclimate among different land use types in an agro-pastoral ecotone of northern China
Zhao, W; Hu, ZM; Li, SG; Guo, Q; Liu, ZJ; Zhang, LM
2017
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume599Pages:891-898
AbstractThe biophysical effect of land use conversion plays a significant role in regulating climate change. Owing to albedo and evapotranspiration (ET) change, the effect of energy budget difference on land surface temperature (LST) is important but unclear among contrasting land use types, especially in temperate semi-arid regions. Based on moderate-resolution imaging spectroradiometer (MODIS) data, we compared the differences in albedo, ET, and LST between cropland and grassland (CR-GR), and between planted forest and grassland (PF-GR) in the Horqin Sandy Land of Inner Mongolia, an agro-pastoral ecotone of northern China. Our main objective was to explore the magnitude and direction of albedo and ET change during the growing season and, subsequently, to estimate the biophysical effects on LST as a result of land use and land cover change. Our results indicate no significant difference in mean monthly albedo for CR-GR and PF-GR Cropland lost more water through ET and significantly decreased daytime LST compared with grassland from July to September, but no significant differences in ET and LST were observed for PF-GR in any month. The biophysical climate effects were more pronounced for CR-GR compared with PF-GR. The response of LST to the changes in energy budget confirmed that ET was the critical driving factor relative to albedo. Compared with grassland, cropland and planted forest tended to cool the land surface by 5.15 degrees C and 1.51 degrees C during the growing season, respectively, because of the biophysical effects. Our findings suggest the significance of local-scale biophysical effect on climate variation after land use conversion in semi-arid regions. (C) 2017 Elsevier B.V. All rights reserved.
SubtypeJournal
KeywordAlbedo Evapotranspiration Land surface temperature Temperate semi-arid region
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordCOVER CHANGES ; SCALE DEFORESTATION ; BACKGROUND CLIMATE ; USE/LAND COVER ; INNER-MONGOLIA ; TEMPERATURE ; ALBEDO ; MODIS ; FORESTS ; EVAPOTRANSPIRATION
Indexed BySCI
Language英语
WOS IDWOS:000405252000092
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43972
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zhao, W,Hu, ZM,Li, SG,et al. Comparison of surface energy budgets and feedbacks to microclimate among different land use types in an agro-pastoral ecotone of northern China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,599:891-898.
APA Zhao, W,Hu, ZM,Li, SG,Guo, Q,Liu, ZJ,&Zhang, LM.(2017).Comparison of surface energy budgets and feedbacks to microclimate among different land use types in an agro-pastoral ecotone of northern China.SCIENCE OF THE TOTAL ENVIRONMENT,599,891-898.
MLA Zhao, W,et al."Comparison of surface energy budgets and feedbacks to microclimate among different land use types in an agro-pastoral ecotone of northern China".SCIENCE OF THE TOTAL ENVIRONMENT 599(2017):891-898.
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