干旱区生态环境知识资源中心(Arid): Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China

Arid

DOI	10.36783/18069657rbcs20220113
	Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China
	Liu, Xin; Hao, Yuanyuan; Zhou, Ziyan; Hua, Limin; Cao, Wenxia; Zhang, Ruifang; Yang, Xin; Yu, Tao
通讯作者	Hao, YY
来源期刊	REVISTA BRASILEIRA DE CIENCIA DO SOLO
ISSN	0100-0683
EISSN	1806-9657
出版年	2022
卷号	46
英文摘要	Soil moisture (SM) plays an important role in regulating the global water cycle, especially in arid areas, and is one of the main indicators of ecological environmental health. Although traditional methods can accurately measure SM at a single sample site, they are limited in large-scale and dynamic SM monitoring. Therefore, we used the Landsat images as the data source and the soil adjusted vegetation index (SAVI) to build the adjusted SAVI (aSAVI) index by modifying the soil adjustment parameterL and introducing the short-wave infrared band. According to the theory of temperature vegetation dryness index (TVDI) and feature space, we introduced a model, combined the measured SM data (Minqin Basin, China) through a comparative analysis of four vegetation indices (NDVI, SAVI, MSAVI, aSAVI) determine the optimal model. Taking the Minqin Basin as the study area, the spatiotemporal variation characteristics of SM in three sub-regions (the entire study area, irrigated region, and periphery of the irrigated regions) were quantitatively analyzed and compared in four different periods: pre-Comprehensive Treatment Program of the Shiyang River Basin (pre-CTSRB) (2000-2005), CTSRB I (2006-2010), CTSRB II (2011-2016), and CTSRB-end (2017-2021) to evaluate the ecological restoration effects of treatment programs from the SM perspective. The results showed that: 1) SM values derived from TVDI inversion and the aSAVI were more accurate, and the model sensitivity decreased with soil depth; 2) the mean value of SM fluctuated across the four periods but decreased slightly over the entire time series. The spatial variations of the SM were characterized by a descending then ascending trend. Soil moisture increased in 21.35 % of areas at 0.00-0.10 m in the past 22 years, and 59.66 % at 0.10-0.20 m. There was a negative correlation between the mean variation trend of SM and the percentage of area where SM fell in different periods; 3) the treatment program positively affected the ecological restoration of the Minqin Basin from the SM perspective. The area where SM increased was larger than that of decreasing SM, especially in 0.10-0.20 m soil layer. The increase can promote growth and confer resistance to desertification.
英文关键词	soil moisture adjusted SAVI (aSAVI) time series arid semi-arid regions ecological restoration project
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000915254900001
WOS关键词	LAND-SURFACE EMISSIVITY ; LOESS PLATEAU ; MINQIN OASIS ; TEMPORAL VARIATION ; VEGETATION COVER ; WATER CONTENT ; INDEX ; SATELLITE ; EVAPOTRANSPIRATION ; TEMPERATURE
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394278
推荐引用方式 GB/T 7714	Liu, Xin,Hao, Yuanyuan,Zhou, Ziyan,et al. Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China[J],2022,46.
APA	Liu, Xin.,Hao, Yuanyuan.,Zhou, Ziyan.,Hua, Limin.,Cao, Wenxia.,...&Yu, Tao.(2022).Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China.REVISTA BRASILEIRA DE CIENCIA DO SOLO,46.
MLA	Liu, Xin,et al."Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China".REVISTA BRASILEIRA DE CIENCIA DO SOLO 46(2022).