Arid
DOI10.1016/j.scitotenv.2017.04.200
Comparison of surface energy budgets and feedbacks to microclimate among different land use types in an agro-pastoral ecotone of northern China
Zhao, Wei1,2; Hu, Zhongmin1,2,3; Li, Shenggong1,2; Guo, Qun1; Liu, Zhengjia1; Zhang, Leiming1,2
通讯作者Hu, Zhongmin ; Li, Shenggong
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2017
卷号599页码:891-898
英文摘要

The 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.


英文关键词Albedo Evapotranspiration Land surface temperature Temperate semi-arid region
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000405252000092
WOS关键词COVER CHANGES ; BACKGROUND CLIMATE ; USE/LAND COVER ; SCALE ; FORESTS ; ALBEDO ; EVAPOTRANSPIRATION ; DEFORESTATION ; IRRIGATION ; IMPACT
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构中国科学院地理科学与资源研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202235
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Datun Rd A 11, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, CRE, Beijing, Peoples R China;
3.South China Normal Univ, Sch Geog, Shipai Campus, Guangzhou 510631, Guangdong, Peoples R China
推荐引用方式
GB/T 7714
Zhao, Wei,Hu, Zhongmin,Li, Shenggong,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]. 中国科学院地理科学与资源研究所,2017,599:891-898.
APA Zhao, Wei,Hu, Zhongmin,Li, Shenggong,Guo, Qun,Liu, Zhengjia,&Zhang, Leiming.(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, Wei,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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