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Vegetation Greening Promoted the Precipitation Recycling Process in Xinjiang

Authors :
Xuewei Li
Xingming Hao
Sen Zhang
Guanyu Hou
Jingjing Zhang
Xue Fan
Zhuoyi Zhao
Source :
Remote Sensing, Vol 16, Iss 22, p 4156 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Under the combined influences of climate and vegetation change, land–atmosphere interactions have enhanced, and precipitation recycling is an important part of this. Previous studies of the precipitation recycling process have focused on calculating the precipitation recycling rate (PRR) and analyzing the influencing factors. However, the climate-driven and vegetation-induced precipitation recycling process variations were not quantified. This study has systematically examined the precipitation recycling process in a typical arid region using the Eltahir and Bras model, random forest algorithm, and partial least-squares structural equation modeling. During 1982–2018, the leaf area index (LAI) and evapotranspiration (ET) rate both increased significantly, with growth rates of 0.06 m2m−2/decade and 13.99 mm/decade, respectively. At the same time, the average PRR in Xinjiang was 13.92% and experienced significant growth at a rate of 1.28%/decade. The climate-driven and vegetation-induced PRR variations were quantified, which contributed 79.12% and 20.88%, respectively. In addition, the positive effects of both of these on PRR variations through ET did not increase with the increase in ET, but rather decreased sharply and then stabilized. This study can provide favorable theoretical support for mitigating the contradiction in water use and balancing economic development and ecological security by quantifying the regulation of precipitation by vegetation.

Details

Language :
English
ISSN :
20724292
Volume :
16
Issue :
22
Database :
Directory of Open Access Journals
Journal :
Remote Sensing
Publication Type :
Academic Journal
Accession number :
edsdoj.f4b5ce1d428c4f09af07fbe74c274764
Document Type :
article
Full Text :
https://doi.org/10.3390/rs16224156