Universität zu Köln

Zheng, Ying, Dong, Lei ORCID: 0000-0002-2597-988X, Xia, Qian, Liang, Cunzhu, Wang, Lixin and Shao, Yaping (2020). Effects of revegetation on climate in the Mu Us Sandy Land of China. Sci. Total Environ., 739. AMSTERDAM: ELSEVIER. ISSN 1879-1026

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Abstract

The ecological environment in China's arid and semi-arid regions has been improving over the past few decades. Using the MuUs Sandy Land (MUSL) as a case study, we examine the consequent climate feedbacks and the impacts of revegetation on regional climate by incorporating high-resolution remote-sensing vegetation data into the WRF-Noah model. From 2001 to 2010, although a small portion of the grassland was degraded in MUSL, vegetation overall improved, with green fraction and leaf area index increased and surface albedo decreased. The model simulation suggests a cooling of the near-surface temperature by 0.12-0.32 degrees C on average and up to >0.5 degrees C in summer, with a reduction in nighttime minimum of 0.15-0.46 degrees C and in daytime maximum of <0.13 degrees C. The cooling is accompanied by a slight increase in 2-m air humidity. The near-surface cooling and wetting are induced by revegetation-enhanced evapotranspiration, but they have insignificant effect on the local precipitation. The results of this study imply that while revegetation has positive effects on the ecological systems in MUSL, it bears the cost of an increase in evapotranspiration of 51 men per summer, which may exacerbate the water shortages in the region.(C) 2020 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zheng, Ying UNSPECIFIED UNSPECIFIED UNSPECIFIED Dong, Lei UNSPECIFIED orcid.org/0000-0002-2597-988X UNSPECIFIED Xia, Qian UNSPECIFIED UNSPECIFIED UNSPECIFIED Liang, Cunzhu UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Lixin UNSPECIFIED UNSPECIFIED UNSPECIFIED Shao, Yaping UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-314959
DOI:	10.1016/j.scitotenv.2020.139958
Journal or Publication Title:	Sci. Total Environ.
Volume:	739
Date:	2020
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-1026
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COVER CHANGE; VEGETATION RESTORATION; ECOLOGICAL RESTORATION; SURFACE-TEMPERATURE; LOESS PLATEAU; IMPACT; DESERTIFICATION; DYNAMICS; AFFORESTATION; SENSITIVITY Multiple languages Environmental Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31495